Merged from "branches/vim7.1".

[MacVim.git] / src / ex_docmd.c

/* vi:set ts=8 sts=4 sw=4:
 *
 * VIM - Vi IMproved    by Bram Moolenaar
 *
 * Do ":help uganda"  in Vim to read copying and usage conditions.
 * Do ":help credits" in Vim to see a list of people who contributed.
 * See README.txt for an overview of the Vim source code.
 */

/*
 * ex_docmd.c: functions for executing an Ex command line.
 */

#include "vim.h"

#ifdef HAVE_FCNTL_H
# include <fcntl.h>         /* for chdir() */
#endif

static int      quitmore = 0;
static int      ex_pressedreturn = FALSE;
#ifndef FEAT_PRINTER
# define ex_hardcopy    ex_ni
#endif

#ifdef FEAT_USR_CMDS
typedef struct ucmd
{
    char_u      *uc_name;       /* The command name */
    long_u      uc_argt;        /* The argument type */
    char_u      *uc_rep;        /* The command's replacement string */
    long        uc_def;         /* The default value for a range/count */
    scid_T      uc_scriptID;    /* SID where the command was defined */
    int         uc_compl;       /* completion type */
# if defined(FEAT_EVAL) && defined(FEAT_CMDL_COMPL)
    char_u      *uc_compl_arg;  /* completion argument if any */
# endif
} ucmd_T;

#define UC_BUFFER       1       /* -buffer: local to current buffer */

static garray_T ucmds = {0, 0, sizeof(ucmd_T), 4, NULL};

#define USER_CMD(i) (&((ucmd_T *)(ucmds.ga_data))[i])
#define USER_CMD_GA(gap, i) (&((ucmd_T *)((gap)->ga_data))[i])

static void do_ucmd __ARGS((exarg_T *eap));
static void ex_command __ARGS((exarg_T *eap));
static void ex_delcommand __ARGS((exarg_T *eap));
# ifdef FEAT_CMDL_COMPL
static char_u *get_user_command_name __ARGS((int idx));
# endif

#else
# define ex_command     ex_ni
# define ex_comclear    ex_ni
# define ex_delcommand  ex_ni
#endif

#ifdef FEAT_EVAL
static char_u   *do_one_cmd __ARGS((char_u **, int, struct condstack *, char_u *(*fgetline)(int, void *, int), void *cookie));
#else
static char_u   *do_one_cmd __ARGS((char_u **, int, char_u *(*fgetline)(int, void *, int), void *cookie));
static int      if_level = 0;           /* depth in :if */
#endif
static char_u   *find_command __ARGS((exarg_T *eap, int *full));

static void     ex_abbreviate __ARGS((exarg_T *eap));
static void     ex_map __ARGS((exarg_T *eap));
static void     ex_unmap __ARGS((exarg_T *eap));
static void     ex_mapclear __ARGS((exarg_T *eap));
static void     ex_abclear __ARGS((exarg_T *eap));
#ifndef FEAT_MENU
# define ex_emenu               ex_ni
# define ex_menu                ex_ni
# define ex_menutranslate       ex_ni
#endif
#ifdef FEAT_AUTOCMD
static void     ex_autocmd __ARGS((exarg_T *eap));
static void     ex_doautocmd __ARGS((exarg_T *eap));
#else
# define ex_autocmd             ex_ni
# define ex_doautocmd           ex_ni
# define ex_doautoall           ex_ni
#endif
#ifdef FEAT_LISTCMDS
static void     ex_bunload __ARGS((exarg_T *eap));
static void     ex_buffer __ARGS((exarg_T *eap));
static void     ex_bmodified __ARGS((exarg_T *eap));
static void     ex_bnext __ARGS((exarg_T *eap));
static void     ex_bprevious __ARGS((exarg_T *eap));
static void     ex_brewind __ARGS((exarg_T *eap));
static void     ex_blast __ARGS((exarg_T *eap));
#else
# define ex_bunload             ex_ni
# define ex_buffer              ex_ni
# define ex_bmodified           ex_ni
# define ex_bnext               ex_ni
# define ex_bprevious           ex_ni
# define ex_brewind             ex_ni
# define ex_blast               ex_ni
# define buflist_list           ex_ni
# define ex_checktime           ex_ni
#endif
#if !defined(FEAT_LISTCMDS) || !defined(FEAT_WINDOWS)
# define ex_buffer_all          ex_ni
#endif
static char_u   *getargcmd __ARGS((char_u **));
static char_u   *skip_cmd_arg __ARGS((char_u *p, int rembs));
static int      getargopt __ARGS((exarg_T *eap));
#ifndef FEAT_QUICKFIX
# define ex_make                ex_ni
# define ex_cbuffer             ex_ni
# define ex_cc                  ex_ni
# define ex_cnext               ex_ni
# define ex_cfile               ex_ni
# define qf_list                ex_ni
# define qf_age                 ex_ni
# define ex_helpgrep            ex_ni
# define ex_vimgrep             ex_ni
#endif
#if !defined(FEAT_QUICKFIX) || !defined(FEAT_WINDOWS)
# define ex_cclose              ex_ni
# define ex_copen               ex_ni
# define ex_cwindow             ex_ni
#endif
#if !defined(FEAT_QUICKFIX) || !defined(FEAT_EVAL)
# define ex_cexpr               ex_ni
#endif

static int      check_more __ARGS((int, int));
static linenr_T get_address __ARGS((char_u **, int skip, int to_other_file));
static void     get_flags __ARGS((exarg_T *eap));
#if !defined(FEAT_PERL) || !defined(FEAT_PYTHON) || !defined(FEAT_TCL) \
        || !defined(FEAT_RUBY) || !defined(FEAT_MZSCHEME)
static void     ex_script_ni __ARGS((exarg_T *eap));
#endif
static char_u   *invalid_range __ARGS((exarg_T *eap));
static void     correct_range __ARGS((exarg_T *eap));
#ifdef FEAT_QUICKFIX
static char_u   *replace_makeprg __ARGS((exarg_T *eap, char_u *p, char_u **cmdlinep));
#endif
static char_u   *repl_cmdline __ARGS((exarg_T *eap, char_u *src, int srclen, char_u *repl, char_u **cmdlinep));
static void     ex_highlight __ARGS((exarg_T *eap));
static void     ex_colorscheme __ARGS((exarg_T *eap));
static void     ex_quit __ARGS((exarg_T *eap));
static void     ex_cquit __ARGS((exarg_T *eap));
static void     ex_quit_all __ARGS((exarg_T *eap));
#ifdef FEAT_WINDOWS
static void     ex_close __ARGS((exarg_T *eap));
static void     ex_win_close __ARGS((int forceit, win_T *win, tabpage_T *tp));
static void     ex_only __ARGS((exarg_T *eap));
static void     ex_resize __ARGS((exarg_T *eap));
static void     ex_stag __ARGS((exarg_T *eap));
static void     ex_tabclose __ARGS((exarg_T *eap));
static void     ex_tabonly __ARGS((exarg_T *eap));
static void     ex_tabnext __ARGS((exarg_T *eap));
static void     ex_tabmove __ARGS((exarg_T *eap));
static void     ex_tabs __ARGS((exarg_T *eap));
#else
# define ex_close               ex_ni
# define ex_only                ex_ni
# define ex_all                 ex_ni
# define ex_resize              ex_ni
# define ex_splitview           ex_ni
# define ex_stag                ex_ni
# define ex_tabnext             ex_ni
# define ex_tabmove             ex_ni
# define ex_tabs                ex_ni
# define ex_tabclose            ex_ni
# define ex_tabonly             ex_ni
#endif
#if defined(FEAT_WINDOWS) && defined(FEAT_QUICKFIX)
static void     ex_pclose __ARGS((exarg_T *eap));
static void     ex_ptag __ARGS((exarg_T *eap));
static void     ex_pedit __ARGS((exarg_T *eap));
#else
# define ex_pclose              ex_ni
# define ex_ptag                ex_ni
# define ex_pedit               ex_ni
#endif
static void     ex_hide __ARGS((exarg_T *eap));
static void     ex_stop __ARGS((exarg_T *eap));
static void     ex_exit __ARGS((exarg_T *eap));
static void     ex_print __ARGS((exarg_T *eap));
#ifdef FEAT_BYTEOFF
static void     ex_goto __ARGS((exarg_T *eap));
#else
# define ex_goto                ex_ni
#endif
static void     ex_shell __ARGS((exarg_T *eap));
static void     ex_preserve __ARGS((exarg_T *eap));
static void     ex_recover __ARGS((exarg_T *eap));
#ifndef FEAT_LISTCMDS
# define ex_argedit             ex_ni
# define ex_argadd              ex_ni
# define ex_argdelete           ex_ni
# define ex_listdo              ex_ni
#endif
static void     ex_mode __ARGS((exarg_T *eap));
static void     ex_wrongmodifier __ARGS((exarg_T *eap));
static void     ex_find __ARGS((exarg_T *eap));
static void     ex_open __ARGS((exarg_T *eap));
static void     ex_edit __ARGS((exarg_T *eap));
#if !defined(FEAT_GUI) && !defined(FEAT_CLIENTSERVER)
# define ex_drop                ex_ni
#endif
#ifndef FEAT_GUI
# define ex_gui                 ex_nogui
static void     ex_nogui __ARGS((exarg_T *eap));
#endif
#if defined(FEAT_GUI_W32) && defined(FEAT_MENU) && defined(FEAT_TEAROFF)
static void     ex_tearoff __ARGS((exarg_T *eap));
#else
# define ex_tearoff             ex_ni
#endif
#if (defined(FEAT_GUI_MSWIN) || defined(FEAT_GUI_GTK)) && defined(FEAT_MENU)
static void     ex_popup __ARGS((exarg_T *eap));
#else
# define ex_popup               ex_ni
#endif
#ifndef FEAT_GUI_MSWIN
# define ex_simalt              ex_ni
#endif
#if !defined(FEAT_GUI_MSWIN) && !defined(FEAT_GUI_GTK) && !defined(FEAT_GUI_MOTIF)
# define gui_mch_find_dialog    ex_ni
# define gui_mch_replace_dialog ex_ni
#endif
#if !defined(FEAT_GUI_GTK)
# define ex_helpfind            ex_ni
#endif
#ifndef FEAT_CSCOPE
# define do_cscope              ex_ni
# define do_scscope             ex_ni
# define do_cstag               ex_ni
#endif
#ifndef FEAT_SYN_HL
# define ex_syntax              ex_ni
#endif
#ifndef FEAT_SPELL
# define ex_spell               ex_ni
# define ex_mkspell             ex_ni
# define ex_spelldump           ex_ni
# define ex_spellinfo           ex_ni
# define ex_spellrepall         ex_ni
#endif
#ifndef FEAT_MZSCHEME
# define ex_mzscheme            ex_script_ni
# define ex_mzfile              ex_ni
#endif
#ifndef FEAT_PERL
# define ex_perl                ex_script_ni
# define ex_perldo              ex_ni
#endif
#ifndef FEAT_PYTHON
# define ex_python              ex_script_ni
# define ex_pyfile              ex_ni
#endif
#ifndef FEAT_TCL
# define ex_tcl                 ex_script_ni
# define ex_tcldo               ex_ni
# define ex_tclfile             ex_ni
#endif
#ifndef FEAT_RUBY
# define ex_ruby                ex_script_ni
# define ex_rubydo              ex_ni
# define ex_rubyfile            ex_ni
#endif
#ifndef FEAT_SNIFF
# define ex_sniff               ex_ni
#endif
#ifndef FEAT_KEYMAP
# define ex_loadkeymap          ex_ni
#endif
static void     ex_swapname __ARGS((exarg_T *eap));
static void     ex_syncbind __ARGS((exarg_T *eap));
static void     ex_read __ARGS((exarg_T *eap));
static void     ex_cd __ARGS((exarg_T *eap));
static void     ex_pwd __ARGS((exarg_T *eap));
static void     ex_equal __ARGS((exarg_T *eap));
static void     ex_sleep __ARGS((exarg_T *eap));
static void     do_exmap __ARGS((exarg_T *eap, int isabbrev));
static void     ex_winsize __ARGS((exarg_T *eap));
#ifdef FEAT_WINDOWS
static void     ex_wincmd __ARGS((exarg_T *eap));
#else
# define ex_wincmd          ex_ni
#endif
#if defined(FEAT_GUI) || defined(UNIX) || defined(VMS) || defined(MSWIN)
static void     ex_winpos __ARGS((exarg_T *eap));
#else
# define ex_winpos          ex_ni
#endif
static void     ex_operators __ARGS((exarg_T *eap));
static void     ex_put __ARGS((exarg_T *eap));
static void     ex_copymove __ARGS((exarg_T *eap));
static void     ex_may_print __ARGS((exarg_T *eap));
static void     ex_submagic __ARGS((exarg_T *eap));
static void     ex_join __ARGS((exarg_T *eap));
static void     ex_at __ARGS((exarg_T *eap));
static void     ex_bang __ARGS((exarg_T *eap));
static void     ex_undo __ARGS((exarg_T *eap));
static void     ex_redo __ARGS((exarg_T *eap));
static void     ex_later __ARGS((exarg_T *eap));
static void     ex_redir __ARGS((exarg_T *eap));
static void     ex_redraw __ARGS((exarg_T *eap));
static void     ex_redrawstatus __ARGS((exarg_T *eap));
static void     close_redir __ARGS((void));
static void     ex_mkrc __ARGS((exarg_T *eap));
static void     ex_mark __ARGS((exarg_T *eap));
#ifdef FEAT_USR_CMDS
static char_u   *uc_fun_cmd __ARGS((void));
static char_u   *find_ucmd __ARGS((exarg_T *eap, char_u *p, int *full, expand_T *xp, int *compl));
#endif
#ifdef FEAT_EX_EXTRA
static void     ex_normal __ARGS((exarg_T *eap));
static void     ex_startinsert __ARGS((exarg_T *eap));
static void     ex_stopinsert __ARGS((exarg_T *eap));
#else
# define ex_normal              ex_ni
# define ex_align               ex_ni
# define ex_retab               ex_ni
# define ex_startinsert         ex_ni
# define ex_stopinsert          ex_ni
# define ex_helptags            ex_ni
# define ex_sort                ex_ni
#endif
#ifdef FEAT_FIND_ID
static void     ex_checkpath __ARGS((exarg_T *eap));
static void     ex_findpat __ARGS((exarg_T *eap));
#else
# define ex_findpat             ex_ni
# define ex_checkpath           ex_ni
#endif
#if defined(FEAT_FIND_ID) && defined(FEAT_WINDOWS) && defined(FEAT_QUICKFIX)
static void     ex_psearch __ARGS((exarg_T *eap));
#else
# define ex_psearch             ex_ni
#endif
static void     ex_tag __ARGS((exarg_T *eap));
static void     ex_tag_cmd __ARGS((exarg_T *eap, char_u *name));
#ifndef FEAT_EVAL
# define ex_scriptnames         ex_ni
# define ex_finish              ex_ni
# define ex_echo                ex_ni
# define ex_echohl              ex_ni
# define ex_execute             ex_ni
# define ex_call                ex_ni
# define ex_if                  ex_ni
# define ex_endif               ex_ni
# define ex_else                ex_ni
# define ex_while               ex_ni
# define ex_for                 ex_ni
# define ex_continue            ex_ni
# define ex_break               ex_ni
# define ex_endwhile            ex_ni
# define ex_endfor              ex_ni
# define ex_throw               ex_ni
# define ex_try                 ex_ni
# define ex_catch               ex_ni
# define ex_finally             ex_ni
# define ex_endtry              ex_ni
# define ex_endfunction         ex_ni
# define ex_let                 ex_ni
# define ex_unlet               ex_ni
# define ex_lockvar             ex_ni
# define ex_unlockvar           ex_ni
# define ex_function            ex_ni
# define ex_delfunction         ex_ni
# define ex_return              ex_ni
#endif
static char_u   *arg_all __ARGS((void));
#ifdef FEAT_SESSION
static int      makeopens __ARGS((FILE *fd, char_u *dirnow));
static int      put_view __ARGS((FILE *fd, win_T *wp, int add_edit, unsigned *flagp));
static void     ex_loadview __ARGS((exarg_T *eap));
static char_u   *get_view_file __ARGS((int c));
static int      did_lcd;        /* whether ":lcd" was produced for a session */
#else
# define ex_loadview            ex_ni
#endif
#ifndef FEAT_EVAL
# define ex_compiler            ex_ni
#endif
#ifdef FEAT_VIMINFO
static void     ex_viminfo __ARGS((exarg_T *eap));
#else
# define ex_viminfo             ex_ni
#endif
static void     ex_behave __ARGS((exarg_T *eap));
#ifdef FEAT_AUTOCMD
static void     ex_filetype __ARGS((exarg_T *eap));
static void     ex_setfiletype  __ARGS((exarg_T *eap));
#else
# define ex_filetype            ex_ni
# define ex_setfiletype         ex_ni
#endif
#ifndef FEAT_DIFF
# define ex_diffoff             ex_ni
# define ex_diffpatch           ex_ni
# define ex_diffgetput          ex_ni
# define ex_diffsplit           ex_ni
# define ex_diffthis            ex_ni
# define ex_diffupdate          ex_ni
#endif
static void     ex_digraphs __ARGS((exarg_T *eap));
static void     ex_set __ARGS((exarg_T *eap));
#if !defined(FEAT_EVAL) || !defined(FEAT_AUTOCMD)
# define ex_options             ex_ni
#endif
#ifdef FEAT_SEARCH_EXTRA
static void     ex_nohlsearch __ARGS((exarg_T *eap));
static void     ex_match __ARGS((exarg_T *eap));
#else
# define ex_nohlsearch          ex_ni
# define ex_match               ex_ni
#endif
#ifdef FEAT_CRYPT
static void     ex_X __ARGS((exarg_T *eap));
#else
# define ex_X                   ex_ni
#endif
#ifdef FEAT_FOLDING
static void     ex_fold __ARGS((exarg_T *eap));
static void     ex_foldopen __ARGS((exarg_T *eap));
static void     ex_folddo __ARGS((exarg_T *eap));
#else
# define ex_fold                ex_ni
# define ex_foldopen            ex_ni
# define ex_folddo              ex_ni
#endif
#if !((defined(HAVE_LOCALE_H) || defined(X_LOCALE)) \
        && (defined(FEAT_GETTEXT) || defined(FEAT_MBYTE)))
# define ex_language            ex_ni
#endif
#ifndef FEAT_SIGNS
# define ex_sign                ex_ni
#endif
#ifndef FEAT_SUN_WORKSHOP
# define ex_wsverb              ex_ni
#endif
#ifndef FEAT_NETBEANS_INTG
# define ex_nbkey               ex_ni
#endif

#ifndef FEAT_EVAL
# define ex_debug               ex_ni
# define ex_breakadd            ex_ni
# define ex_debuggreedy         ex_ni
# define ex_breakdel            ex_ni
# define ex_breaklist           ex_ni
#endif

#ifndef FEAT_CMDHIST
# define ex_history             ex_ni
#endif
#ifndef FEAT_JUMPLIST
# define ex_jumps               ex_ni
# define ex_changes             ex_ni
#endif

#ifndef FEAT_PROFILE
# define ex_profile             ex_ni
#endif

/*
 * Declare cmdnames[].
 */
#define DO_DECLARE_EXCMD
#include "ex_cmds.h"

/*
 * Table used to quickly search for a command, based on its first character.
 */
static cmdidx_T cmdidxs[27] =
{
        CMD_append,
        CMD_buffer,
        CMD_change,
        CMD_delete,
        CMD_edit,
        CMD_file,
        CMD_global,
        CMD_help,
        CMD_insert,
        CMD_join,
        CMD_k,
        CMD_list,
        CMD_move,
        CMD_next,
        CMD_open,
        CMD_print,
        CMD_quit,
        CMD_read,
        CMD_substitute,
        CMD_t,
        CMD_undo,
        CMD_vglobal,
        CMD_write,
        CMD_xit,
        CMD_yank,
        CMD_z,
        CMD_bang
};

static char_u dollar_command[2] = {'$', 0};


#ifdef FEAT_EVAL
/* Struct for storing a line inside a while/for loop */
typedef struct
{
    char_u      *line;          /* command line */
    linenr_T    lnum;           /* sourcing_lnum of the line */
} wcmd_T;

/*
 * Structure used to store info for line position in a while or for loop.
 * This is required, because do_one_cmd() may invoke ex_function(), which
 * reads more lines that may come from the while/for loop.
 */
struct loop_cookie
{
    garray_T    *lines_gap;             /* growarray with line info */
    int         current_line;           /* last read line from growarray */
    int         repeating;              /* TRUE when looping a second time */
    /* When "repeating" is FALSE use "getline" and "cookie" to get lines */
    char_u      *(*getline) __ARGS((int, void *, int));
    void        *cookie;
};

static char_u   *get_loop_line __ARGS((int c, void *cookie, int indent));
static int      store_loop_line __ARGS((garray_T *gap, char_u *line));
static void     free_cmdlines __ARGS((garray_T *gap));

/* Struct to save a few things while debugging.  Used in do_cmdline() only. */
struct dbg_stuff
{
    int         trylevel;
    int         force_abort;
    except_T    *caught_stack;
    char_u      *vv_exception;
    char_u      *vv_throwpoint;
    int         did_emsg;
    int         got_int;
    int         did_throw;
    int         need_rethrow;
    int         check_cstack;
    except_T    *current_exception;
};

static void save_dbg_stuff __ARGS((struct dbg_stuff *dsp));
static void restore_dbg_stuff __ARGS((struct dbg_stuff *dsp));

    static void
save_dbg_stuff(dsp)
    struct dbg_stuff *dsp;
{
    dsp->trylevel       = trylevel;             trylevel = 0;
    dsp->force_abort    = force_abort;          force_abort = FALSE;
    dsp->caught_stack   = caught_stack;         caught_stack = NULL;
    dsp->vv_exception   = v_exception(NULL);
    dsp->vv_throwpoint  = v_throwpoint(NULL);

    /* Necessary for debugging an inactive ":catch", ":finally", ":endtry" */
    dsp->did_emsg       = did_emsg;             did_emsg     = FALSE;
    dsp->got_int        = got_int;              got_int      = FALSE;
    dsp->did_throw      = did_throw;            did_throw    = FALSE;
    dsp->need_rethrow   = need_rethrow;         need_rethrow = FALSE;
    dsp->check_cstack   = check_cstack;         check_cstack = FALSE;
    dsp->current_exception = current_exception; current_exception = NULL;
}

    static void
restore_dbg_stuff(dsp)
    struct dbg_stuff *dsp;
{
    suppress_errthrow = FALSE;
    trylevel = dsp->trylevel;
    force_abort = dsp->force_abort;
    caught_stack = dsp->caught_stack;
    (void)v_exception(dsp->vv_exception);
    (void)v_throwpoint(dsp->vv_throwpoint);
    did_emsg = dsp->did_emsg;
    got_int = dsp->got_int;
    did_throw = dsp->did_throw;
    need_rethrow = dsp->need_rethrow;
    check_cstack = dsp->check_cstack;
    current_exception = dsp->current_exception;
}
#endif


/*
 * do_exmode(): Repeatedly get commands for the "Ex" mode, until the ":vi"
 * command is given.
 */
    void
do_exmode(improved)
    int         improved;           /* TRUE for "improved Ex" mode */
{
    int         save_msg_scroll;
    int         prev_msg_row;
    linenr_T    prev_line;
    int         changedtick;

    if (improved)
        exmode_active = EXMODE_VIM;
    else
        exmode_active = EXMODE_NORMAL;
    State = NORMAL;

    /* When using ":global /pat/ visual" and then "Q" we return to continue
     * the :global command. */
    if (global_busy)
        return;

    save_msg_scroll = msg_scroll;
    ++RedrawingDisabled;            /* don't redisplay the window */
    ++no_wait_return;               /* don't wait for return */
#ifdef FEAT_GUI
    /* Ignore scrollbar and mouse events in Ex mode */
    ++hold_gui_events;
#endif
#ifdef FEAT_SNIFF
    want_sniff_request = 0;    /* No K_SNIFF wanted */
#endif

    MSG(_("Entering Ex mode.  Type \"visual\" to go to Normal mode."));
    while (exmode_active)
    {
#ifdef FEAT_EX_EXTRA
        /* Check for a ":normal" command and no more characters left. */
        if (ex_normal_busy > 0 && typebuf.tb_len == 0)
        {
            exmode_active = FALSE;
            break;
        }
#endif
        msg_scroll = TRUE;
        need_wait_return = FALSE;
        ex_pressedreturn = FALSE;
        ex_no_reprint = FALSE;
        changedtick = curbuf->b_changedtick;
        prev_msg_row = msg_row;
        prev_line = curwin->w_cursor.lnum;
#ifdef FEAT_SNIFF
        ProcessSniffRequests();
#endif
        if (improved)
        {
            cmdline_row = msg_row;
            do_cmdline(NULL, getexline, NULL, 0);
        }
        else
            do_cmdline(NULL, getexmodeline, NULL, DOCMD_NOWAIT);
        lines_left = Rows - 1;

        if ((prev_line != curwin->w_cursor.lnum
                    || changedtick != curbuf->b_changedtick) && !ex_no_reprint)
        {
            if (curbuf->b_ml.ml_flags & ML_EMPTY)
                EMSG(_(e_emptybuf));
            else
            {
                if (ex_pressedreturn)
                {
                    /* go up one line, to overwrite the ":<CR>" line, so the
                     * output doensn't contain empty lines. */
                    msg_row = prev_msg_row;
                    if (prev_msg_row == Rows - 1)
                        msg_row--;
                }
                msg_col = 0;
                print_line_no_prefix(curwin->w_cursor.lnum, FALSE, FALSE);
                msg_clr_eos();
            }
        }
        else if (ex_pressedreturn && !ex_no_reprint)    /* must be at EOF */
        {
            if (curbuf->b_ml.ml_flags & ML_EMPTY)
                EMSG(_(e_emptybuf));
            else
                EMSG(_("E501: At end-of-file"));
        }
    }

#ifdef FEAT_GUI
    --hold_gui_events;
#endif
    --RedrawingDisabled;
    --no_wait_return;
    update_screen(CLEAR);
    need_wait_return = FALSE;
    msg_scroll = save_msg_scroll;
}

/*
 * Execute a simple command line.  Used for translated commands like "*".
 */
    int
do_cmdline_cmd(cmd)
    char_u      *cmd;
{
    return do_cmdline(cmd, NULL, NULL,
                                   DOCMD_VERBOSE|DOCMD_NOWAIT|DOCMD_KEYTYPED);
}

/*
 * do_cmdline(): execute one Ex command line
 *
 * 1. Execute "cmdline" when it is not NULL.
 *    If "cmdline" is NULL, or more lines are needed, getline() is used.
 * 2. Split up in parts separated with '|'.
 *
 * This function can be called recursively!
 *
 * flags:
 * DOCMD_VERBOSE  - The command will be included in the error message.
 * DOCMD_NOWAIT   - Don't call wait_return() and friends.
 * DOCMD_REPEAT   - Repeat execution until getline() returns NULL.
 * DOCMD_KEYTYPED - Don't reset KeyTyped.
 * DOCMD_EXCRESET - Reset the exception environment (used for debugging).
 * DOCMD_KEEPLINE - Store first typed line (for repeating with ".").
 *
 * return FAIL if cmdline could not be executed, OK otherwise
 */
    int
do_cmdline(cmdline, getline, cookie, flags)
    char_u      *cmdline;
    char_u      *(*getline) __ARGS((int, void *, int));
    void        *cookie;                /* argument for getline() */
    int         flags;
{
    char_u      *next_cmdline;          /* next cmd to execute */
    char_u      *cmdline_copy = NULL;   /* copy of cmd line */
    int         used_getline = FALSE;   /* used "getline" to obtain command */
    static int  recursive = 0;          /* recursive depth */
    int         msg_didout_before_start = 0;
    int         count = 0;              /* line number count */
    int         did_inc = FALSE;        /* incremented RedrawingDisabled */
    int         retval = OK;
#ifdef FEAT_EVAL
    struct condstack cstack;            /* conditional stack */
    garray_T    lines_ga;               /* keep lines for ":while"/":for" */
    int         current_line = 0;       /* active line in lines_ga */
    char_u      *fname = NULL;          /* function or script name */
    linenr_T    *breakpoint = NULL;     /* ptr to breakpoint field in cookie */
    int         *dbg_tick = NULL;       /* ptr to dbg_tick field in cookie */
    struct dbg_stuff debug_saved;       /* saved things for debug mode */
    int         initial_trylevel;
    struct msglist      **saved_msg_list = NULL;
    struct msglist      *private_msg_list;

    /* "getline" and "cookie" passed to do_one_cmd() */
    char_u      *(*cmd_getline) __ARGS((int, void *, int));
    void        *cmd_cookie;
    struct loop_cookie cmd_loop_cookie;
    void        *real_cookie;
    int         getline_is_func;
#else
# define cmd_getline getline
# define cmd_cookie cookie
#endif
    static int  call_depth = 0;         /* recursiveness */

#ifdef FEAT_EVAL
    /* For every pair of do_cmdline()/do_one_cmd() calls, use an extra memory
     * location for storing error messages to be converted to an exception.
     * This ensures that the do_errthrow() call in do_one_cmd() does not
     * combine the messages stored by an earlier invocation of do_one_cmd()
     * with the command name of the later one.  This would happen when
     * BufWritePost autocommands are executed after a write error. */
    saved_msg_list = msg_list;
    msg_list = &private_msg_list;
    private_msg_list = NULL;
#endif

    /* It's possible to create an endless loop with ":execute", catch that
     * here.  The value of 200 allows nested function calls, ":source", etc. */
    if (call_depth == 200)
    {
        EMSG(_("E169: Command too recursive"));
#ifdef FEAT_EVAL
        /* When converting to an exception, we do not include the command name
         * since this is not an error of the specific command. */
        do_errthrow((struct condstack *)NULL, (char_u *)NULL);
        msg_list = saved_msg_list;
#endif
        return FAIL;
    }
    ++call_depth;

#ifdef FEAT_EVAL
    cstack.cs_idx = -1;
    cstack.cs_looplevel = 0;
    cstack.cs_trylevel = 0;
    cstack.cs_emsg_silent_list = NULL;
    cstack.cs_lflags = 0;
    ga_init2(&lines_ga, (int)sizeof(wcmd_T), 10);

    real_cookie = getline_cookie(getline, cookie);

    /* Inside a function use a higher nesting level. */
    getline_is_func = getline_equal(getline, cookie, get_func_line);
    if (getline_is_func && ex_nesting_level == func_level(real_cookie))
        ++ex_nesting_level;

    /* Get the function or script name and the address where the next breakpoint
     * line and the debug tick for a function or script are stored. */
    if (getline_is_func)
    {
        fname = func_name(real_cookie);
        breakpoint = func_breakpoint(real_cookie);
        dbg_tick = func_dbg_tick(real_cookie);
    }
    else if (getline_equal(getline, cookie, getsourceline))
    {
        fname = sourcing_name;
        breakpoint = source_breakpoint(real_cookie);
        dbg_tick = source_dbg_tick(real_cookie);
    }

    /*
     * Initialize "force_abort"  and "suppress_errthrow" at the top level.
     */
    if (!recursive)
    {
        force_abort = FALSE;
        suppress_errthrow = FALSE;
    }

    /*
     * If requested, store and reset the global values controlling the
     * exception handling (used when debugging).  Otherwise clear it to avoid
     * a bogus compiler warning when the optimizer uses inline functions...
     */
    if (flags & DOCMD_EXCRESET)
        save_dbg_stuff(&debug_saved);
    else
        memset(&debug_saved, 0, 1);

    initial_trylevel = trylevel;

    /*
     * "did_throw" will be set to TRUE when an exception is being thrown.
     */
    did_throw = FALSE;
#endif
    /*
     * "did_emsg" will be set to TRUE when emsg() is used, in which case we
     * cancel the whole command line, and any if/endif or loop.
     * If force_abort is set, we cancel everything.
     */
    did_emsg = FALSE;

    /*
     * KeyTyped is only set when calling vgetc().  Reset it here when not
     * calling vgetc() (sourced command lines).
     */
    if (!(flags & DOCMD_KEYTYPED) && !getline_equal(getline, cookie, getexline))
        KeyTyped = FALSE;

    /*
     * Continue executing command lines:
     * - when inside an ":if", ":while" or ":for"
     * - for multiple commands on one line, separated with '|'
     * - when repeating until there are no more lines (for ":source")
     */
    next_cmdline = cmdline;
    do
    {
#ifdef FEAT_EVAL
        getline_is_func = getline_equal(getline, cookie, get_func_line);
#endif

        /* stop skipping cmds for an error msg after all endif/while/for */
        if (next_cmdline == NULL
#ifdef FEAT_EVAL
                && !force_abort
                && cstack.cs_idx < 0
                && !(getline_is_func && func_has_abort(real_cookie))
#endif
                                                        )
            did_emsg = FALSE;

        /*
         * 1. If repeating a line in a loop, get a line from lines_ga.
         * 2. If no line given: Get an allocated line with getline().
         * 3. If a line is given: Make a copy, so we can mess with it.
         */

#ifdef FEAT_EVAL
        /* 1. If repeating, get a previous line from lines_ga. */
        if (cstack.cs_looplevel > 0 && current_line < lines_ga.ga_len)
        {
            /* Each '|' separated command is stored separately in lines_ga, to
             * be able to jump to it.  Don't use next_cmdline now. */
            vim_free(cmdline_copy);
            cmdline_copy = NULL;

            /* Check if a function has returned or, unless it has an unclosed
             * try conditional, aborted. */
            if (getline_is_func)
            {
# ifdef FEAT_PROFILE
                if (do_profiling == PROF_YES)
                    func_line_end(real_cookie);
# endif
                if (func_has_ended(real_cookie))
                {
                    retval = FAIL;
                    break;
                }
            }
#ifdef FEAT_PROFILE
            else if (do_profiling == PROF_YES
                             && getline_equal(getline, cookie, getsourceline))
                script_line_end();
#endif

            /* Check if a sourced file hit a ":finish" command. */
            if (source_finished(getline, cookie))
            {
                retval = FAIL;
                break;
            }

            /* If breakpoints have been added/deleted need to check for it. */
            if (breakpoint != NULL && dbg_tick != NULL
                                                   && *dbg_tick != debug_tick)
            {
                *breakpoint = dbg_find_breakpoint(
                                getline_equal(getline, cookie, getsourceline),
                                                        fname, sourcing_lnum);
                *dbg_tick = debug_tick;
            }

            next_cmdline = ((wcmd_T *)(lines_ga.ga_data))[current_line].line;
            sourcing_lnum = ((wcmd_T *)(lines_ga.ga_data))[current_line].lnum;

            /* Did we encounter a breakpoint? */
            if (breakpoint != NULL && *breakpoint != 0
                                              && *breakpoint <= sourcing_lnum)
            {
                dbg_breakpoint(fname, sourcing_lnum);
                /* Find next breakpoint. */
                *breakpoint = dbg_find_breakpoint(
                                getline_equal(getline, cookie, getsourceline),
                                                        fname, sourcing_lnum);
                *dbg_tick = debug_tick;
            }
# ifdef FEAT_PROFILE
            if (do_profiling == PROF_YES)
            {
                if (getline_is_func)
                    func_line_start(real_cookie);
                else if (getline_equal(getline, cookie, getsourceline))
                    script_line_start();
            }
# endif
        }

        if (cstack.cs_looplevel > 0)
        {
            /* Inside a while/for loop we need to store the lines and use them
             * again.  Pass a different "getline" function to do_one_cmd()
             * below, so that it stores lines in or reads them from
             * "lines_ga".  Makes it possible to define a function inside a
             * while/for loop. */
            cmd_getline = get_loop_line;
            cmd_cookie = (void *)&cmd_loop_cookie;
            cmd_loop_cookie.lines_gap = &lines_ga;
            cmd_loop_cookie.current_line = current_line;
            cmd_loop_cookie.getline = getline;
            cmd_loop_cookie.cookie = cookie;
            cmd_loop_cookie.repeating = (current_line < lines_ga.ga_len);
        }
        else
        {
            cmd_getline = getline;
            cmd_cookie = cookie;
        }
#endif

        /* 2. If no line given, get an allocated line with getline(). */
        if (next_cmdline == NULL)
        {
            /*
             * Need to set msg_didout for the first line after an ":if",
             * otherwise the ":if" will be overwritten.
             */
            if (count == 1 && getline_equal(getline, cookie, getexline))
                msg_didout = TRUE;
            if (getline == NULL || (next_cmdline = getline(':', cookie,
#ifdef FEAT_EVAL
                    cstack.cs_idx < 0 ? 0 : (cstack.cs_idx + 1) * 2
#else
                    0
#endif
                            )) == NULL)
            {
                /* Don't call wait_return for aborted command line.  The NULL
                 * returned for the end of a sourced file or executed function
                 * doesn't do this. */
                if (KeyTyped && !(flags & DOCMD_REPEAT))
                    need_wait_return = FALSE;
                retval = FAIL;
                break;
            }
            used_getline = TRUE;

            /*
             * Keep the first typed line.  Clear it when more lines are typed.
             */
            if (flags & DOCMD_KEEPLINE)
            {
                vim_free(repeat_cmdline);
                if (count == 0)
                    repeat_cmdline = vim_strsave(next_cmdline);
                else
                    repeat_cmdline = NULL;
            }
        }

        /* 3. Make a copy of the command so we can mess with it. */
        else if (cmdline_copy == NULL)
        {
            next_cmdline = vim_strsave(next_cmdline);
            if (next_cmdline == NULL)
            {
                EMSG(_(e_outofmem));
                retval = FAIL;
                break;
            }
        }
        cmdline_copy = next_cmdline;

#ifdef FEAT_EVAL
        /*
         * Save the current line when inside a ":while" or ":for", and when
         * the command looks like a ":while" or ":for", because we may need it
         * later.  When there is a '|' and another command, it is stored
         * separately, because we need to be able to jump back to it from an
         * :endwhile/:endfor.
         */
        if (current_line == lines_ga.ga_len
                && (cstack.cs_looplevel || has_loop_cmd(next_cmdline)))
        {
            if (store_loop_line(&lines_ga, next_cmdline) == FAIL)
            {
                retval = FAIL;
                break;
            }
        }
        did_endif = FALSE;
#endif

        if (count++ == 0)
        {
            /*
             * All output from the commands is put below each other, without
             * waiting for a return. Don't do this when executing commands
             * from a script or when being called recursive (e.g. for ":e
             * +command file").
             */
            if (!(flags & DOCMD_NOWAIT) && !recursive)
            {
                msg_didout_before_start = msg_didout;
                msg_didany = FALSE; /* no output yet */
                msg_start();
                msg_scroll = TRUE;  /* put messages below each other */
                ++no_wait_return;   /* dont wait for return until finished */
                ++RedrawingDisabled;
                did_inc = TRUE;
            }
        }

        if (p_verbose >= 15 && sourcing_name != NULL)
        {
            ++no_wait_return;
            verbose_enter_scroll();

            smsg((char_u *)_("line %ld: %s"),
                                           (long)sourcing_lnum, cmdline_copy);
            if (msg_silent == 0)
                msg_puts((char_u *)"\n");   /* don't overwrite this */

            verbose_leave_scroll();
            --no_wait_return;
        }

        /*
         * 2. Execute one '|' separated command.
         *    do_one_cmd() will return NULL if there is no trailing '|'.
         *    "cmdline_copy" can change, e.g. for '%' and '#' expansion.
         */
        ++recursive;
        next_cmdline = do_one_cmd(&cmdline_copy, flags & DOCMD_VERBOSE,
#ifdef FEAT_EVAL
                                &cstack,
#endif
                                cmd_getline, cmd_cookie);
        --recursive;

#ifdef FEAT_EVAL
        if (cmd_cookie == (void *)&cmd_loop_cookie)
            /* Use "current_line" from "cmd_loop_cookie", it may have been
             * incremented when defining a function. */
            current_line = cmd_loop_cookie.current_line;
#endif

        if (next_cmdline == NULL)
        {
            vim_free(cmdline_copy);
            cmdline_copy = NULL;
#ifdef FEAT_CMDHIST
            /*
             * If the command was typed, remember it for the ':' register.
             * Do this AFTER executing the command to make :@: work.
             */
            if (getline_equal(getline, cookie, getexline)
                                                  && new_last_cmdline != NULL)
            {
                vim_free(last_cmdline);
                last_cmdline = new_last_cmdline;
                new_last_cmdline = NULL;
            }
#endif
        }
        else
        {
            /* need to copy the command after the '|' to cmdline_copy, for the
             * next do_one_cmd() */
            mch_memmove(cmdline_copy, next_cmdline, STRLEN(next_cmdline) + 1);
            next_cmdline = cmdline_copy;
        }


#ifdef FEAT_EVAL
        /* reset did_emsg for a function that is not aborted by an error */
        if (did_emsg && !force_abort
                && getline_equal(getline, cookie, get_func_line)
                                              && !func_has_abort(real_cookie))
            did_emsg = FALSE;

        if (cstack.cs_looplevel > 0)
        {
            ++current_line;

            /*
             * An ":endwhile", ":endfor" and ":continue" is handled here.
             * If we were executing commands, jump back to the ":while" or
             * ":for".
             * If we were not executing commands, decrement cs_looplevel.
             */
            if (cstack.cs_lflags & (CSL_HAD_CONT | CSL_HAD_ENDLOOP))
            {
                cstack.cs_lflags &= ~(CSL_HAD_CONT | CSL_HAD_ENDLOOP);

                /* Jump back to the matching ":while" or ":for".  Be careful
                 * not to use a cs_line[] from an entry that isn't a ":while"
                 * or ":for": It would make "current_line" invalid and can
                 * cause a crash. */
                if (!did_emsg && !got_int && !did_throw
                        && cstack.cs_idx >= 0
                        && (cstack.cs_flags[cstack.cs_idx]
                                                      & (CSF_WHILE | CSF_FOR))
                        && cstack.cs_line[cstack.cs_idx] >= 0
                        && (cstack.cs_flags[cstack.cs_idx] & CSF_ACTIVE))
                {
                    current_line = cstack.cs_line[cstack.cs_idx];
                                                /* remember we jumped there */
                    cstack.cs_lflags |= CSL_HAD_LOOP;
                    line_breakcheck();          /* check if CTRL-C typed */

                    /* Check for the next breakpoint at or after the ":while"
                     * or ":for". */
                    if (breakpoint != NULL)
                    {
                        *breakpoint = dbg_find_breakpoint(
                                getline_equal(getline, cookie, getsourceline),
                                                                        fname,
                           ((wcmd_T *)lines_ga.ga_data)[current_line].lnum-1);
                        *dbg_tick = debug_tick;
                    }
                }
                else
                {
                    /* can only get here with ":endwhile" or ":endfor" */
                    if (cstack.cs_idx >= 0)
                        rewind_conditionals(&cstack, cstack.cs_idx - 1,
                                   CSF_WHILE | CSF_FOR, &cstack.cs_looplevel);
                }
            }

            /*
             * For a ":while" or ":for" we need to remember the line number.
             */
            else if (cstack.cs_lflags & CSL_HAD_LOOP)
            {
                cstack.cs_lflags &= ~CSL_HAD_LOOP;
                cstack.cs_line[cstack.cs_idx] = current_line - 1;
            }
        }

        /*
         * When not inside any ":while" loop, clear remembered lines.
         */
        if (cstack.cs_looplevel == 0)
        {
            if (lines_ga.ga_len > 0)
            {
                sourcing_lnum =
                       ((wcmd_T *)lines_ga.ga_data)[lines_ga.ga_len - 1].lnum;
                free_cmdlines(&lines_ga);
            }
            current_line = 0;
        }

        /*
         * A ":finally" makes did_emsg, got_int, and did_throw pending for
         * being restored at the ":endtry".  Reset them here and set the
         * ACTIVE and FINALLY flags, so that the finally clause gets executed.
         * This includes the case where a missing ":endif", ":endwhile" or
         * ":endfor" was detected by the ":finally" itself.
         */
        if (cstack.cs_lflags & CSL_HAD_FINA)
        {
            cstack.cs_lflags &= ~CSL_HAD_FINA;
            report_make_pending(cstack.cs_pending[cstack.cs_idx]
                    & (CSTP_ERROR | CSTP_INTERRUPT | CSTP_THROW),
                    did_throw ? (void *)current_exception : NULL);
            did_emsg = got_int = did_throw = FALSE;
            cstack.cs_flags[cstack.cs_idx] |= CSF_ACTIVE | CSF_FINALLY;
        }

        /* Update global "trylevel" for recursive calls to do_cmdline() from
         * within this loop. */
        trylevel = initial_trylevel + cstack.cs_trylevel;

        /*
         * If the outermost try conditional (across function calls and sourced
         * files) is aborted because of an error, an interrupt, or an uncaught
         * exception, cancel everything.  If it is left normally, reset
         * force_abort to get the non-EH compatible abortion behavior for
         * the rest of the script.
         */
        if (trylevel == 0 && !did_emsg && !got_int && !did_throw)
            force_abort = FALSE;

        /* Convert an interrupt to an exception if appropriate. */
        (void)do_intthrow(&cstack);
#endif /* FEAT_EVAL */

    }
    /*
     * Continue executing command lines when:
     * - no CTRL-C typed, no aborting error, no exception thrown or try
     *   conditionals need to be checked for executing finally clauses or
     *   catching an interrupt exception
     * - didn't get an error message or lines are not typed
     * - there is a command after '|', inside a :if, :while, :for or :try, or
     *   looping for ":source" command or function call.
     */
    while (!((got_int
#ifdef FEAT_EVAL
                    || (did_emsg && force_abort) || did_throw
#endif
             )
#ifdef FEAT_EVAL
                && cstack.cs_trylevel == 0
#endif
            )
            && !(did_emsg && used_getline
                          && (getline_equal(getline, cookie, getexmodeline)
                                || getline_equal(getline, cookie, getexline)))
            && (next_cmdline != NULL
#ifdef FEAT_EVAL
                        || cstack.cs_idx >= 0
#endif
                        || (flags & DOCMD_REPEAT)));

    vim_free(cmdline_copy);
#ifdef FEAT_EVAL
    free_cmdlines(&lines_ga);
    ga_clear(&lines_ga);

    if (cstack.cs_idx >= 0)
    {
        /*
         * If a sourced file or executed function ran to its end, report the
         * unclosed conditional.
         */
        if (!got_int && !did_throw
                && ((getline_equal(getline, cookie, getsourceline)
                        && !source_finished(getline, cookie))
                    || (getline_equal(getline, cookie, get_func_line)
                                            && !func_has_ended(real_cookie))))
        {
            if (cstack.cs_flags[cstack.cs_idx] & CSF_TRY)
                EMSG(_(e_endtry));
            else if (cstack.cs_flags[cstack.cs_idx] & CSF_WHILE)
                EMSG(_(e_endwhile));
            else if (cstack.cs_flags[cstack.cs_idx] & CSF_FOR)
                EMSG(_(e_endfor));
            else
                EMSG(_(e_endif));
        }

        /*
         * Reset "trylevel" in case of a ":finish" or ":return" or a missing
         * ":endtry" in a sourced file or executed function.  If the try
         * conditional is in its finally clause, ignore anything pending.
         * If it is in a catch clause, finish the caught exception.
         * Also cleanup any "cs_forinfo" structures.
         */
        do
        {
            int idx = cleanup_conditionals(&cstack, 0, TRUE);

            if (idx >= 0)
                --idx;      /* remove try block not in its finally clause */
            rewind_conditionals(&cstack, idx, CSF_WHILE | CSF_FOR,
                                                        &cstack.cs_looplevel);
        }
        while (cstack.cs_idx >= 0);
        trylevel = initial_trylevel;
    }

    /* If a missing ":endtry", ":endwhile", ":endfor", or ":endif" or a memory
     * lack was reported above and the error message is to be converted to an
     * exception, do this now after rewinding the cstack. */
    do_errthrow(&cstack, getline_equal(getline, cookie, get_func_line)
                                  ? (char_u *)"endfunction" : (char_u *)NULL);

    if (trylevel == 0)
    {
        /*
         * When an exception is being thrown out of the outermost try
         * conditional, discard the uncaught exception, disable the conversion
         * of interrupts or errors to exceptions, and ensure that no more
         * commands are executed.
         */
        if (did_throw)
        {
            void        *p = NULL;
            char_u      *saved_sourcing_name;
            int         saved_sourcing_lnum;
            struct msglist      *messages = NULL, *next;

            /*
             * If the uncaught exception is a user exception, report it as an
             * error.  If it is an error exception, display the saved error
             * message now.  For an interrupt exception, do nothing; the
             * interrupt message is given elsewhere.
             */
            switch (current_exception->type)
            {
                case ET_USER:
                    vim_snprintf((char *)IObuff, IOSIZE,
                            _("E605: Exception not caught: %s"),
                            current_exception->value);
                    p = vim_strsave(IObuff);
                    break;
                case ET_ERROR:
                    messages = current_exception->messages;
                    current_exception->messages = NULL;
                    break;
                case ET_INTERRUPT:
                    break;
                default:
                    p = vim_strsave((char_u *)_(e_internal));
            }

            saved_sourcing_name = sourcing_name;
            saved_sourcing_lnum = sourcing_lnum;
            sourcing_name = current_exception->throw_name;
            sourcing_lnum = current_exception->throw_lnum;
            current_exception->throw_name = NULL;

            discard_current_exception();        /* uses IObuff if 'verbose' */
            suppress_errthrow = TRUE;
            force_abort = TRUE;

            if (messages != NULL)
            {
                do
                {
                    next = messages->next;
                    emsg(messages->msg);
                    vim_free(messages->msg);
                    vim_free(messages);
                    messages = next;
                }
                while (messages != NULL);
            }
            else if (p != NULL)
            {
                emsg(p);
                vim_free(p);
            }
            vim_free(sourcing_name);
            sourcing_name = saved_sourcing_name;
            sourcing_lnum = saved_sourcing_lnum;
        }

        /*
         * On an interrupt or an aborting error not converted to an exception,
         * disable the conversion of errors to exceptions.  (Interrupts are not
         * converted any more, here.) This enables also the interrupt message
         * when force_abort is set and did_emsg unset in case of an interrupt
         * from a finally clause after an error.
         */
        else if (got_int || (did_emsg && force_abort))
            suppress_errthrow = TRUE;
    }

    /*
     * The current cstack will be freed when do_cmdline() returns.  An uncaught
     * exception will have to be rethrown in the previous cstack.  If a function
     * has just returned or a script file was just finished and the previous
     * cstack belongs to the same function or, respectively, script file, it
     * will have to be checked for finally clauses to be executed due to the
     * ":return" or ":finish".  This is done in do_one_cmd().
     */
    if (did_throw)
        need_rethrow = TRUE;
    if ((getline_equal(getline, cookie, getsourceline)
                && ex_nesting_level > source_level(real_cookie))
            || (getline_equal(getline, cookie, get_func_line)
                && ex_nesting_level > func_level(real_cookie) + 1))
    {
        if (!did_throw)
            check_cstack = TRUE;
    }
    else
    {
        /* When leaving a function, reduce nesting level. */
        if (getline_equal(getline, cookie, get_func_line))
            --ex_nesting_level;
        /*
         * Go to debug mode when returning from a function in which we are
         * single-stepping.
         */
        if ((getline_equal(getline, cookie, getsourceline)
                    || getline_equal(getline, cookie, get_func_line))
                && ex_nesting_level + 1 <= debug_break_level)
            do_debug(getline_equal(getline, cookie, getsourceline)
                    ? (char_u *)_("End of sourced file")
                    : (char_u *)_("End of function"));
    }

    /*
     * Restore the exception environment (done after returning from the
     * debugger).
     */
    if (flags & DOCMD_EXCRESET)
        restore_dbg_stuff(&debug_saved);

    msg_list = saved_msg_list;
#endif /* FEAT_EVAL */

    /*
     * If there was too much output to fit on the command line, ask the user to
     * hit return before redrawing the screen. With the ":global" command we do
     * this only once after the command is finished.
     */
    if (did_inc)
    {
        --RedrawingDisabled;
        --no_wait_return;
        msg_scroll = FALSE;

        /*
         * When just finished an ":if"-":else" which was typed, no need to
         * wait for hit-return.  Also for an error situation.
         */
        if (retval == FAIL
#ifdef FEAT_EVAL
                || (did_endif && KeyTyped && !did_emsg)
#endif
                                            )
        {
            need_wait_return = FALSE;
            msg_didany = FALSE;         /* don't wait when restarting edit */
        }
        else if (need_wait_return)
        {
            /*
             * The msg_start() above clears msg_didout. The wait_return we do
             * here should not overwrite the command that may be shown before
             * doing that.
             */
            msg_didout |= msg_didout_before_start;
            wait_return(FALSE);
        }
    }

#ifndef FEAT_EVAL
    /*
     * Reset if_level, in case a sourced script file contains more ":if" than
     * ":endif" (could be ":if x | foo | endif").
     */
    if_level = 0;
#endif

    --call_depth;
    return retval;
}

#ifdef FEAT_EVAL
/*
 * Obtain a line when inside a ":while" or ":for" loop.
 */
    static char_u *
get_loop_line(c, cookie, indent)
    int         c;
    void        *cookie;
    int         indent;
{
    struct loop_cookie  *cp = (struct loop_cookie *)cookie;
    wcmd_T              *wp;
    char_u              *line;

    if (cp->current_line + 1 >= cp->lines_gap->ga_len)
    {
        if (cp->repeating)
            return NULL;        /* trying to read past ":endwhile"/":endfor" */

        /* First time inside the ":while"/":for": get line normally. */
        if (cp->getline == NULL)
            line = getcmdline(c, 0L, indent);
        else
            line = cp->getline(c, cp->cookie, indent);
        if (line != NULL && store_loop_line(cp->lines_gap, line) == OK)
            ++cp->current_line;

        return line;
    }

    KeyTyped = FALSE;
    ++cp->current_line;
    wp = (wcmd_T *)(cp->lines_gap->ga_data) + cp->current_line;
    sourcing_lnum = wp->lnum;
    return vim_strsave(wp->line);
}

/*
 * Store a line in "gap" so that a ":while" loop can execute it again.
 */
    static int
store_loop_line(gap, line)
    garray_T    *gap;
    char_u      *line;
{
    if (ga_grow(gap, 1) == FAIL)
        return FAIL;
    ((wcmd_T *)(gap->ga_data))[gap->ga_len].line = vim_strsave(line);
    ((wcmd_T *)(gap->ga_data))[gap->ga_len].lnum = sourcing_lnum;
    ++gap->ga_len;
    return OK;
}

/*
 * Free the lines stored for a ":while" or ":for" loop.
 */
    static void
free_cmdlines(gap)
    garray_T    *gap;
{
    while (gap->ga_len > 0)
    {
        vim_free(((wcmd_T *)(gap->ga_data))[gap->ga_len - 1].line);
        --gap->ga_len;
    }
}
#endif

/*
 * If "fgetline" is get_loop_line(), return TRUE if the getline it uses equals
 * "func".  * Otherwise return TRUE when "fgetline" equals "func".
 */
/*ARGSUSED*/
    int
getline_equal(fgetline, cookie, func)
    char_u      *(*fgetline) __ARGS((int, void *, int));
    void        *cookie;                /* argument for fgetline() */
    char_u      *(*func) __ARGS((int, void *, int));
{
#ifdef FEAT_EVAL
    char_u              *(*gp) __ARGS((int, void *, int));
    struct loop_cookie *cp;

    /* When "fgetline" is "get_loop_line()" use the "cookie" to find the
     * function that's originally used to obtain the lines.  This may be
     * nested several levels. */
    gp = fgetline;
    cp = (struct loop_cookie *)cookie;
    while (gp == get_loop_line)
    {
        gp = cp->getline;
        cp = cp->cookie;
    }
    return gp == func;
#else
    return fgetline == func;
#endif
}

#if defined(FEAT_EVAL) || defined(FEAT_MBYTE) || defined(PROTO)
/*
 * If "fgetline" is get_loop_line(), return the cookie used by the original
 * getline function.  Otherwise return "cookie".
 */
/*ARGSUSED*/
    void *
getline_cookie(fgetline, cookie)
    char_u      *(*fgetline) __ARGS((int, void *, int));
    void        *cookie;                /* argument for fgetline() */
{
# ifdef FEAT_EVAL
    char_u              *(*gp) __ARGS((int, void *, int));
    struct loop_cookie *cp;

    /* When "fgetline" is "get_loop_line()" use the "cookie" to find the
     * cookie that's originally used to obtain the lines.  This may be nested
     * several levels. */
    gp = fgetline;
    cp = (struct loop_cookie *)cookie;
    while (gp == get_loop_line)
    {
        gp = cp->getline;
        cp = cp->cookie;
    }
    return cp;
# else
    return cookie;
# endif
}
#endif

/*
 * Execute one Ex command.
 *
 * If 'sourcing' is TRUE, the command will be included in the error message.
 *
 * 1. skip comment lines and leading space
 * 2. handle command modifiers
 * 3. parse range
 * 4. parse command
 * 5. parse arguments
 * 6. switch on command name
 *
 * Note: "fgetline" can be NULL.
 *
 * This function may be called recursively!
 */
#if (_MSC_VER == 1200)
/*
 * Avoid optimisation bug in VC++ version 6.0
 */
 #pragma optimize( "g", off )
#endif
    static char_u *
do_one_cmd(cmdlinep, sourcing,
#ifdef FEAT_EVAL
                            cstack,
#endif
                                    fgetline, cookie)
    char_u              **cmdlinep;
    int                 sourcing;
#ifdef FEAT_EVAL
    struct condstack    *cstack;
#endif
    char_u              *(*fgetline) __ARGS((int, void *, int));
    void                *cookie;                /* argument for fgetline() */
{
    char_u              *p;
    linenr_T            lnum;
    long                n;
    char_u              *errormsg = NULL;       /* error message */
    exarg_T             ea;                     /* Ex command arguments */
    long                verbose_save = -1;
    int                 save_msg_scroll = 0;
    int                 did_silent = 0;
    int                 did_esilent = 0;
#ifdef HAVE_SANDBOX
    int                 did_sandbox = FALSE;
#endif
    cmdmod_T            save_cmdmod;
    int                 ni;                     /* set when Not Implemented */

    vim_memset(&ea, 0, sizeof(ea));
    ea.line1 = 1;
    ea.line2 = 1;
#ifdef FEAT_EVAL
    ++ex_nesting_level;
#endif

        /* when not editing the last file :q has to be typed twice */
    if (quitmore
#ifdef FEAT_EVAL
            /* avoid that a function call in 'statusline' does this */
            && !getline_equal(fgetline, cookie, get_func_line)
#endif
            )
        --quitmore;

    /*
     * Reset browse, confirm, etc..  They are restored when returning, for
     * recursive calls.
     */
    save_cmdmod = cmdmod;
    vim_memset(&cmdmod, 0, sizeof(cmdmod));

    /* "#!anything" is handled like a comment. */
    if ((*cmdlinep)[0] == '#' && (*cmdlinep)[1] == '!')
        goto doend;

    /*
     * Repeat until no more command modifiers are found.
     */
    ea.cmd = *cmdlinep;
    for (;;)
    {
/*
 * 1. skip comment lines and leading white space and colons
 */
        while (*ea.cmd == ' ' || *ea.cmd == '\t' || *ea.cmd == ':')
            ++ea.cmd;

        /* in ex mode, an empty line works like :+ */
        if (*ea.cmd == NUL && exmode_active
                        && (getline_equal(fgetline, cookie, getexmodeline)
                            || getline_equal(fgetline, cookie, getexline))
                        && curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count)
        {
            ea.cmd = (char_u *)"+";
            ex_pressedreturn = TRUE;
        }

        /* ignore comment and empty lines */
        if (*ea.cmd == '"' || *ea.cmd == NUL)
        {
            ex_pressedreturn = TRUE;
            goto doend;
        }

/*
 * 2. handle command modifiers.
 */
        p = ea.cmd;
        if (VIM_ISDIGIT(*ea.cmd))
            p = skipwhite(skipdigits(ea.cmd));
        switch (*p)
        {
            /* When adding an entry, also modify cmd_exists(). */
            case 'a':   if (!checkforcmd(&ea.cmd, "aboveleft", 3))
                            break;
#ifdef FEAT_WINDOWS
                        cmdmod.split |= WSP_ABOVE;
#endif
                        continue;

            case 'b':   if (checkforcmd(&ea.cmd, "belowright", 3))
                        {
#ifdef FEAT_WINDOWS
                            cmdmod.split |= WSP_BELOW;
#endif
                            continue;
                        }
                        if (checkforcmd(&ea.cmd, "browse", 3))
                        {
#ifdef FEAT_BROWSE
                            cmdmod.browse = TRUE;
#endif
                            continue;
                        }
                        if (!checkforcmd(&ea.cmd, "botright", 2))
                            break;
#ifdef FEAT_WINDOWS
                        cmdmod.split |= WSP_BOT;
#endif
                        continue;

            case 'c':   if (!checkforcmd(&ea.cmd, "confirm", 4))
                            break;
#if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)
                        cmdmod.confirm = TRUE;
#endif
                        continue;

            case 'k':   if (checkforcmd(&ea.cmd, "keepmarks", 3))
                        {
                            cmdmod.keepmarks = TRUE;
                            continue;
                        }
                        if (checkforcmd(&ea.cmd, "keepalt", 5))
                        {
                            cmdmod.keepalt = TRUE;
                            continue;
                        }
                        if (!checkforcmd(&ea.cmd, "keepjumps", 5))
                            break;
                        cmdmod.keepjumps = TRUE;
                        continue;

                        /* ":hide" and ":hide | cmd" are not modifiers */
            case 'h':   if (p != ea.cmd || !checkforcmd(&p, "hide", 3)
                                               || *p == NUL || ends_excmd(*p))
                            break;
                        ea.cmd = p;
                        cmdmod.hide = TRUE;
                        continue;

            case 'l':   if (checkforcmd(&ea.cmd, "lockmarks", 3))
                        {
                            cmdmod.lockmarks = TRUE;
                            continue;
                        }

                        if (!checkforcmd(&ea.cmd, "leftabove", 5))
                            break;
#ifdef FEAT_WINDOWS
                        cmdmod.split |= WSP_ABOVE;
#endif
                        continue;

            case 'n':   if (!checkforcmd(&ea.cmd, "noautocmd", 3))
                            break;
#ifdef FEAT_AUTOCMD
                        if (cmdmod.save_ei == NULL)
                        {
                            /* Set 'eventignore' to "all". Restore the
                             * existing option value later. */
                            cmdmod.save_ei = vim_strsave(p_ei);
                            set_string_option_direct((char_u *)"ei", -1,
                                         (char_u *)"all", OPT_FREE, SID_NONE);
                        }
#endif
                        continue;

            case 'r':   if (!checkforcmd(&ea.cmd, "rightbelow", 6))
                            break;
#ifdef FEAT_WINDOWS
                        cmdmod.split |= WSP_BELOW;
#endif
                        continue;

            case 's':   if (checkforcmd(&ea.cmd, "sandbox", 3))
                        {
#ifdef HAVE_SANDBOX
                            if (!did_sandbox)
                                ++sandbox;
                            did_sandbox = TRUE;
#endif
                            continue;
                        }
                        if (!checkforcmd(&ea.cmd, "silent", 3))
                            break;
                        ++did_silent;
                        ++msg_silent;
                        save_msg_scroll = msg_scroll;
                        if (*ea.cmd == '!' && !vim_iswhite(ea.cmd[-1]))
                        {
                            /* ":silent!", but not "silent !cmd" */
                            ea.cmd = skipwhite(ea.cmd + 1);
                            ++emsg_silent;
                            ++did_esilent;
                        }
                        continue;

            case 't':   if (checkforcmd(&p, "tab", 3))
                        {
#ifdef FEAT_WINDOWS
                            if (vim_isdigit(*ea.cmd))
                                cmdmod.tab = atoi((char *)ea.cmd) + 1;
                            else
                                cmdmod.tab = tabpage_index(curtab) + 1;
                            ea.cmd = p;
#endif
                            continue;
                        }
                        if (!checkforcmd(&ea.cmd, "topleft", 2))
                            break;
#ifdef FEAT_WINDOWS
                        cmdmod.split |= WSP_TOP;
#endif
                        continue;

            case 'v':   if (checkforcmd(&ea.cmd, "vertical", 4))
                        {
#ifdef FEAT_VERTSPLIT
                            cmdmod.split |= WSP_VERT;
#endif
                            continue;
                        }
                        if (!checkforcmd(&p, "verbose", 4))
                            break;
                        if (verbose_save < 0)
                            verbose_save = p_verbose;
                        if (vim_isdigit(*ea.cmd))
                            p_verbose = atoi((char *)ea.cmd);
                        else
                            p_verbose = 1;
                        ea.cmd = p;
                        continue;
        }
        break;
    }

#ifdef FEAT_EVAL
    ea.skip = did_emsg || got_int || did_throw || (cstack->cs_idx >= 0
                         && !(cstack->cs_flags[cstack->cs_idx] & CSF_ACTIVE));
#else
    ea.skip = (if_level > 0);
#endif

#ifdef FEAT_EVAL
# ifdef FEAT_PROFILE
    /* Count this line for profiling if ea.skip is FALSE. */
    if (do_profiling == PROF_YES && !ea.skip)
    {
        if (getline_equal(fgetline, cookie, get_func_line))
            func_line_exec(getline_cookie(fgetline, cookie));
        else if (getline_equal(fgetline, cookie, getsourceline))
            script_line_exec();
    }
#endif

    /* May go to debug mode.  If this happens and the ">quit" debug command is
     * used, throw an interrupt exception and skip the next command. */
    dbg_check_breakpoint(&ea);
    if (!ea.skip && got_int)
    {
        ea.skip = TRUE;
        (void)do_intthrow(cstack);
    }
#endif

/*
 * 3. parse a range specifier of the form: addr [,addr] [;addr] ..
 *
 * where 'addr' is:
 *
 * %          (entire file)
 * $  [+-NUM]
 * 'x [+-NUM] (where x denotes a currently defined mark)
 * .  [+-NUM]
 * [+-NUM]..
 * NUM
 *
 * The ea.cmd pointer is updated to point to the first character following the
 * range spec. If an initial address is found, but no second, the upper bound
 * is equal to the lower.
 */

    /* repeat for all ',' or ';' separated addresses */
    for (;;)
    {
        ea.line1 = ea.line2;
        ea.line2 = curwin->w_cursor.lnum;   /* default is current line number */
        ea.cmd = skipwhite(ea.cmd);
        lnum = get_address(&ea.cmd, ea.skip, ea.addr_count == 0);
        if (ea.cmd == NULL)                 /* error detected */
            goto doend;
        if (lnum == MAXLNUM)
        {
            if (*ea.cmd == '%')             /* '%' - all lines */
            {
                ++ea.cmd;
                ea.line1 = 1;
                ea.line2 = curbuf->b_ml.ml_line_count;
                ++ea.addr_count;
            }
                                            /* '*' - visual area */
            else if (*ea.cmd == '*' && vim_strchr(p_cpo, CPO_STAR) == NULL)
            {
                pos_T       *fp;

                ++ea.cmd;
                if (!ea.skip)
                {
                    fp = getmark('<', FALSE);
                    if (check_mark(fp) == FAIL)
                        goto doend;
                    ea.line1 = fp->lnum;
                    fp = getmark('>', FALSE);
                    if (check_mark(fp) == FAIL)
                        goto doend;
                    ea.line2 = fp->lnum;
                    ++ea.addr_count;
                }
            }
        }
        else
            ea.line2 = lnum;
        ea.addr_count++;

        if (*ea.cmd == ';')
        {
            if (!ea.skip)
                curwin->w_cursor.lnum = ea.line2;
        }
        else if (*ea.cmd != ',')
            break;
        ++ea.cmd;
    }

    /* One address given: set start and end lines */
    if (ea.addr_count == 1)
    {
        ea.line1 = ea.line2;
            /* ... but only implicit: really no address given */
        if (lnum == MAXLNUM)
            ea.addr_count = 0;
    }

    /* Don't leave the cursor on an illegal line (caused by ';') */
    check_cursor_lnum();

/*
 * 4. parse command
 */

    /*
     * Skip ':' and any white space
     */
    ea.cmd = skipwhite(ea.cmd);
    while (*ea.cmd == ':')
        ea.cmd = skipwhite(ea.cmd + 1);

    /*
     * If we got a line, but no command, then go to the line.
     * If we find a '|' or '\n' we set ea.nextcmd.
     */
    if (*ea.cmd == NUL || *ea.cmd == '"' ||
                               (ea.nextcmd = check_nextcmd(ea.cmd)) != NULL)
    {
        /*
         * strange vi behaviour:
         * ":3"         jumps to line 3
         * ":3|..."     prints line 3
         * ":|"         prints current line
         */
        if (ea.skip)        /* skip this if inside :if */
            goto doend;
        if (*ea.cmd == '|' || (exmode_active && ea.line1 != ea.line2))
        {
            ea.cmdidx = CMD_print;
            ea.argt = RANGE+COUNT+TRLBAR;
            if ((errormsg = invalid_range(&ea)) == NULL)
            {
                correct_range(&ea);
                ex_print(&ea);
            }
        }
        else if (ea.addr_count != 0)
        {
            if (ea.line2 > curbuf->b_ml.ml_line_count)
            {
                /* With '-' in 'cpoptions' a line number past the file is an
                 * error, otherwise put it at the end of the file. */
                if (vim_strchr(p_cpo, CPO_MINUS) != NULL)
                    ea.line2 = -1;
                else
                    ea.line2 = curbuf->b_ml.ml_line_count;
            }

            if (ea.line2 < 0)
                errormsg = (char_u *)_(e_invrange);
            else
            {
                if (ea.line2 == 0)
                    curwin->w_cursor.lnum = 1;
                else
                    curwin->w_cursor.lnum = ea.line2;
                beginline(BL_SOL | BL_FIX);
            }
        }
        goto doend;
    }

    /* Find the command and let "p" point to after it. */
    p = find_command(&ea, NULL);

#ifdef FEAT_USR_CMDS
    if (p == NULL)
    {
        if (!ea.skip)
            errormsg = (char_u *)_("E464: Ambiguous use of user-defined command");
        goto doend;
    }
    /* Check for wrong commands. */
    if (*p == '!' && ea.cmd[1] == 0151 && ea.cmd[0] == 78)
    {
        errormsg = uc_fun_cmd();
        goto doend;
    }
#endif
    if (ea.cmdidx == CMD_SIZE)
    {
        if (!ea.skip)
        {
            STRCPY(IObuff, _("E492: Not an editor command"));
            if (!sourcing)
            {
                STRCAT(IObuff, ": ");
                STRNCAT(IObuff, *cmdlinep, 40);
            }
            errormsg = IObuff;
        }
        goto doend;
    }

    ni = (
#ifdef FEAT_USR_CMDS
            !USER_CMDIDX(ea.cmdidx) &&
#endif
            cmdnames[ea.cmdidx].cmd_func == ex_ni);

#ifndef FEAT_EVAL
    /*
     * When the expression evaluation is disabled, recognize the ":if" and
     * ":endif" commands and ignore everything in between it.
     */
    if (ea.cmdidx == CMD_if)
        ++if_level;
    if (if_level)
    {
        if (ea.cmdidx == CMD_endif)
            --if_level;
        goto doend;
    }

#endif

    if (*p == '!' && ea.cmdidx != CMD_substitute)    /* forced commands */
    {
        ++p;
        ea.forceit = TRUE;
    }
    else
        ea.forceit = FALSE;

/*
 * 5. parse arguments
 */
#ifdef FEAT_USR_CMDS
    if (!USER_CMDIDX(ea.cmdidx))
#endif
        ea.argt = (long)cmdnames[(int)ea.cmdidx].cmd_argt;

    if (!ea.skip)
    {
#ifdef HAVE_SANDBOX
        if (sandbox != 0 && !(ea.argt & SBOXOK))
        {
            /* Command not allowed in sandbox. */
            errormsg = (char_u *)_(e_sandbox);
            goto doend;
        }
#endif
        if (!curbuf->b_p_ma && (ea.argt & MODIFY))
        {
            /* Command not allowed in non-'modifiable' buffer */
            errormsg = (char_u *)_(e_modifiable);
            goto doend;
        }

        if (text_locked() && !(ea.argt & CMDWIN)
# ifdef FEAT_USR_CMDS
                && !USER_CMDIDX(ea.cmdidx)
# endif
           )
        {
            /* Command not allowed when editing the command line. */
#ifdef FEAT_CMDWIN
            if (cmdwin_type != 0)
                errormsg = (char_u *)_(e_cmdwin);
            else
#endif
                errormsg = (char_u *)_(e_secure);
            goto doend;
        }
#ifdef FEAT_AUTOCMD
        /* Disallow editing another buffer when "curbuf_lock" is set.
         * Do allow ":edit" (check for argument later).
         * Do allow ":checktime" (it's postponed). */
        if (!(ea.argt & CMDWIN)
                && ea.cmdidx != CMD_edit
                && ea.cmdidx != CMD_checktime
# ifdef FEAT_USR_CMDS
                && !USER_CMDIDX(ea.cmdidx)
# endif
                && curbuf_locked())
            goto doend;
#endif

        if (!ni && !(ea.argt & RANGE) && ea.addr_count > 0)
        {
            /* no range allowed */
            errormsg = (char_u *)_(e_norange);
            goto doend;
        }
    }

    if (!ni && !(ea.argt & BANG) && ea.forceit) /* no <!> allowed */
    {
        errormsg = (char_u *)_(e_nobang);
        goto doend;
    }

    /*
     * Don't complain about the range if it is not used
     * (could happen if line_count is accidentally set to 0).
     */
    if (!ea.skip && !ni)
    {
        /*
         * If the range is backwards, ask for confirmation and, if given, swap
         * ea.line1 & ea.line2 so it's forwards again.
         * When global command is busy, don't ask, will fail below.
         */
        if (!global_busy && ea.line1 > ea.line2)
        {
            if (msg_silent == 0)
            {
                if (sourcing || exmode_active)
                {
                    errormsg = (char_u *)_("E493: Backwards range given");
                    goto doend;
                }
                if (ask_yesno((char_u *)
                        _("Backwards range given, OK to swap"), FALSE) != 'y')
                    goto doend;
            }
            lnum = ea.line1;
            ea.line1 = ea.line2;
            ea.line2 = lnum;
        }
        if ((errormsg = invalid_range(&ea)) != NULL)
            goto doend;
    }

    if ((ea.argt & NOTADR) && ea.addr_count == 0) /* default is 1, not cursor */
        ea.line2 = 1;

    correct_range(&ea);

#ifdef FEAT_FOLDING
    if (((ea.argt & WHOLEFOLD) || ea.addr_count >= 2) && !global_busy)
    {
        /* Put the first line at the start of a closed fold, put the last line
         * at the end of a closed fold. */
        (void)hasFolding(ea.line1, &ea.line1, NULL);
        (void)hasFolding(ea.line2, NULL, &ea.line2);
    }
#endif

#ifdef FEAT_QUICKFIX
    /*
     * For the ":make" and ":grep" commands we insert the 'makeprg'/'grepprg'
     * option here, so things like % get expanded.
     */
    p = replace_makeprg(&ea, p, cmdlinep);
    if (p == NULL)
        goto doend;
#endif

    /*
     * Skip to start of argument.
     * Don't do this for the ":!" command, because ":!! -l" needs the space.
     */
    if (ea.cmdidx == CMD_bang)
        ea.arg = p;
    else
        ea.arg = skipwhite(p);

    /*
     * Check for "++opt=val" argument.
     * Must be first, allow ":w ++enc=utf8 !cmd"
     */
    if (ea.argt & ARGOPT)
        while (ea.arg[0] == '+' && ea.arg[1] == '+')
            if (getargopt(&ea) == FAIL && !ni)
            {
                errormsg = (char_u *)_(e_invarg);
                goto doend;
            }

    if (ea.cmdidx == CMD_write || ea.cmdidx == CMD_update)
    {
        if (*ea.arg == '>')                     /* append */
        {
            if (*++ea.arg != '>')               /* typed wrong */
            {
                errormsg = (char_u *)_("E494: Use w or w>>");
                goto doend;
            }
            ea.arg = skipwhite(ea.arg + 1);
            ea.append = TRUE;
        }
        else if (*ea.arg == '!' && ea.cmdidx == CMD_write)  /* :w !filter */
        {
            ++ea.arg;
            ea.usefilter = TRUE;
        }
    }

    if (ea.cmdidx == CMD_read)
    {
        if (ea.forceit)
        {
            ea.usefilter = TRUE;                /* :r! filter if ea.forceit */
            ea.forceit = FALSE;
        }
        else if (*ea.arg == '!')                /* :r !filter */
        {
            ++ea.arg;
            ea.usefilter = TRUE;
        }
    }

    if (ea.cmdidx == CMD_lshift || ea.cmdidx == CMD_rshift)
    {
        ea.amount = 1;
        while (*ea.arg == *ea.cmd)              /* count number of '>' or '<' */
        {
            ++ea.arg;
            ++ea.amount;
        }
        ea.arg = skipwhite(ea.arg);
    }

    /*
     * Check for "+command" argument, before checking for next command.
     * Don't do this for ":read !cmd" and ":write !cmd".
     */
    if ((ea.argt & EDITCMD) && !ea.usefilter)
        ea.do_ecmd_cmd = getargcmd(&ea.arg);

    /*
     * Check for '|' to separate commands and '"' to start comments.
     * Don't do this for ":read !cmd" and ":write !cmd".
     */
    if ((ea.argt & TRLBAR) && !ea.usefilter)
        separate_nextcmd(&ea);

    /*
     * Check for <newline> to end a shell command.
     * Also do this for ":read !cmd", ":write !cmd" and ":global".
     * Any others?
     */
    else if (ea.cmdidx == CMD_bang
            || ea.cmdidx == CMD_global
            || ea.cmdidx == CMD_vglobal
            || ea.usefilter)
    {
        for (p = ea.arg; *p; ++p)
        {
            /* Remove one backslash before a newline, so that it's possible to
             * pass a newline to the shell and also a newline that is preceded
             * with a backslash.  This makes it impossible to end a shell
             * command in a backslash, but that doesn't appear useful.
             * Halving the number of backslashes is incompatible with previous
             * versions. */
            if (*p == '\\' && p[1] == '\n')
                mch_memmove(p, p + 1, STRLEN(p));
            else if (*p == '\n')
            {
                ea.nextcmd = p + 1;
                *p = NUL;
                break;
            }
        }
    }

    if ((ea.argt & DFLALL) && ea.addr_count == 0)
    {
        ea.line1 = 1;
        ea.line2 = curbuf->b_ml.ml_line_count;
    }

    /* accept numbered register only when no count allowed (:put) */
    if (       (ea.argt & REGSTR)
            && *ea.arg != NUL
#ifdef FEAT_USR_CMDS
            && valid_yank_reg(*ea.arg, (ea.cmdidx != CMD_put
                                                   && USER_CMDIDX(ea.cmdidx)))
            /* Do not allow register = for user commands */
            && (!USER_CMDIDX(ea.cmdidx) || *ea.arg != '=')
#else
            && valid_yank_reg(*ea.arg, ea.cmdidx != CMD_put)
#endif
            && !((ea.argt & COUNT) && VIM_ISDIGIT(*ea.arg)))
    {
        ea.regname = *ea.arg++;
#ifdef FEAT_EVAL
        /* for '=' register: accept the rest of the line as an expression */
        if (ea.arg[-1] == '=' && ea.arg[0] != NUL)
        {
            set_expr_line(vim_strsave(ea.arg));
            ea.arg += STRLEN(ea.arg);
        }
#endif
        ea.arg = skipwhite(ea.arg);
    }

    /*
     * Check for a count.  When accepting a BUFNAME, don't use "123foo" as a
     * count, it's a buffer name.
     */
    if ((ea.argt & COUNT) && VIM_ISDIGIT(*ea.arg)
            && (!(ea.argt & BUFNAME) || *(p = skipdigits(ea.arg)) == NUL
                                                          || vim_iswhite(*p)))
    {
        n = getdigits(&ea.arg);
        ea.arg = skipwhite(ea.arg);
        if (n <= 0 && !ni && (ea.argt & ZEROR) == 0)
        {
            errormsg = (char_u *)_(e_zerocount);
            goto doend;
        }
        if (ea.argt & NOTADR)   /* e.g. :buffer 2, :sleep 3 */
        {
            ea.line2 = n;
            if (ea.addr_count == 0)
                ea.addr_count = 1;
        }
        else
        {
            ea.line1 = ea.line2;
            ea.line2 += n - 1;
            ++ea.addr_count;
            /*
             * Be vi compatible: no error message for out of range.
             */
            if (ea.line2 > curbuf->b_ml.ml_line_count)
                ea.line2 = curbuf->b_ml.ml_line_count;
        }
    }

    /*
     * Check for flags: 'l', 'p' and '#'.
     */
    if (ea.argt & EXFLAGS)
        get_flags(&ea);
                                                /* no arguments allowed */
    if (!ni && !(ea.argt & EXTRA) && *ea.arg != NUL
            && *ea.arg != '"' && (*ea.arg != '|' || (ea.argt & TRLBAR) == 0))
    {
        errormsg = (char_u *)_(e_trailing);
        goto doend;
    }

    if (!ni && (ea.argt & NEEDARG) && *ea.arg == NUL)
    {
        errormsg = (char_u *)_(e_argreq);
        goto doend;
    }

#ifdef FEAT_EVAL
    /*
     * Skip the command when it's not going to be executed.
     * The commands like :if, :endif, etc. always need to be executed.
     * Also make an exception for commands that handle a trailing command
     * themselves.
     */
    if (ea.skip)
    {
        switch (ea.cmdidx)
        {
            /* commands that need evaluation */
            case CMD_while:
            case CMD_endwhile:
            case CMD_for:
            case CMD_endfor:
            case CMD_if:
            case CMD_elseif:
            case CMD_else:
            case CMD_endif:
            case CMD_try:
            case CMD_catch:
            case CMD_finally:
            case CMD_endtry:
            case CMD_function:
                                break;

            /* Commands that handle '|' themselves.  Check: A command should
             * either have the TRLBAR flag, appear in this list or appear in
             * the list at ":help :bar". */
            case CMD_aboveleft:
            case CMD_and:
            case CMD_belowright:
            case CMD_botright:
            case CMD_browse:
            case CMD_call:
            case CMD_confirm:
            case CMD_delfunction:
            case CMD_djump:
            case CMD_dlist:
            case CMD_dsearch:
            case CMD_dsplit:
            case CMD_echo:
            case CMD_echoerr:
            case CMD_echomsg:
            case CMD_echon:
            case CMD_execute:
            case CMD_help:
            case CMD_hide:
            case CMD_ijump:
            case CMD_ilist:
            case CMD_isearch:
            case CMD_isplit:
            case CMD_keepalt:
            case CMD_keepjumps:
            case CMD_keepmarks:
            case CMD_leftabove:
            case CMD_let:
            case CMD_lockmarks:
            case CMD_match:
            case CMD_mzscheme:
            case CMD_perl:
            case CMD_psearch:
            case CMD_python:
            case CMD_return:
            case CMD_rightbelow:
            case CMD_ruby:
            case CMD_silent:
            case CMD_smagic:
            case CMD_snomagic:
            case CMD_substitute:
            case CMD_syntax:
            case CMD_tab:
            case CMD_tcl:
            case CMD_throw:
            case CMD_tilde:
            case CMD_topleft:
            case CMD_unlet:
            case CMD_verbose:
            case CMD_vertical:
                                break;

            default:            goto doend;
        }
    }
#endif

    if (ea.argt & XFILE)
    {
        if (expand_filename(&ea, cmdlinep, &errormsg) == FAIL)
            goto doend;
    }

#ifdef FEAT_LISTCMDS
    /*
     * Accept buffer name.  Cannot be used at the same time with a buffer
     * number.  Don't do this for a user command.
     */
    if ((ea.argt & BUFNAME) && *ea.arg != NUL && ea.addr_count == 0
# ifdef FEAT_USR_CMDS
            && !USER_CMDIDX(ea.cmdidx)
# endif
            )
    {
        /*
         * :bdelete, :bwipeout and :bunload take several arguments, separated
         * by spaces: find next space (skipping over escaped characters).
         * The others take one argument: ignore trailing spaces.
         */
        if (ea.cmdidx == CMD_bdelete || ea.cmdidx == CMD_bwipeout
                                                  || ea.cmdidx == CMD_bunload)
            p = skiptowhite_esc(ea.arg);
        else
        {
            p = ea.arg + STRLEN(ea.arg);
            while (p > ea.arg && vim_iswhite(p[-1]))
                --p;
        }
        ea.line2 = buflist_findpat(ea.arg, p, (ea.argt & BUFUNL) != 0, FALSE);
        if (ea.line2 < 0)           /* failed */
            goto doend;
        ea.addr_count = 1;
        ea.arg = skipwhite(p);
    }
#endif

/*
 * 6. switch on command name
 *
 * The "ea" structure holds the arguments that can be used.
 */
    ea.cmdlinep = cmdlinep;
    ea.getline = fgetline;
    ea.cookie = cookie;
#ifdef FEAT_EVAL
    ea.cstack = cstack;
#endif

#ifdef FEAT_USR_CMDS
    if (USER_CMDIDX(ea.cmdidx))
    {
        /*
         * Execute a user-defined command.
         */
        do_ucmd(&ea);
    }
    else
#endif
    {
        /*
         * Call the function to execute the command.
         */
        ea.errmsg = NULL;
        (cmdnames[ea.cmdidx].cmd_func)(&ea);
        if (ea.errmsg != NULL)
            errormsg = (char_u *)_(ea.errmsg);
    }

#ifdef FEAT_EVAL
    /*
     * If the command just executed called do_cmdline(), any throw or ":return"
     * or ":finish" encountered there must also check the cstack of the still
     * active do_cmdline() that called this do_one_cmd().  Rethrow an uncaught
     * exception, or reanimate a returned function or finished script file and
     * return or finish it again.
     */
    if (need_rethrow)
        do_throw(cstack);
    else if (check_cstack)
    {
        if (source_finished(fgetline, cookie))
            do_finish(&ea, TRUE);
        else if (getline_equal(fgetline, cookie, get_func_line)
                                                   && current_func_returned())
            do_return(&ea, TRUE, FALSE, NULL);
    }
    need_rethrow = check_cstack = FALSE;
#endif

doend:
    if (curwin->w_cursor.lnum == 0)     /* can happen with zero line number */
        curwin->w_cursor.lnum = 1;

    if (errormsg != NULL && *errormsg != NUL && !did_emsg)
    {
        if (sourcing)
        {
            if (errormsg != IObuff)
            {
                STRCPY(IObuff, errormsg);
                errormsg = IObuff;
            }
            STRCAT(errormsg, ": ");
            STRNCAT(errormsg, *cmdlinep, IOSIZE - STRLEN(IObuff));
        }
        emsg(errormsg);
    }
#ifdef FEAT_EVAL
    do_errthrow(cstack,
            (ea.cmdidx != CMD_SIZE
# ifdef FEAT_USR_CMDS
             && !USER_CMDIDX(ea.cmdidx)
# endif
            ) ? cmdnames[(int)ea.cmdidx].cmd_name : (char_u *)NULL);
#endif

    if (verbose_save >= 0)
        p_verbose = verbose_save;
#ifdef FEAT_AUTOCMD
    if (cmdmod.save_ei != NULL)
    {
        /* Restore 'eventignore' to the value before ":noautocmd". */
        set_string_option_direct((char_u *)"ei", -1, cmdmod.save_ei,
                                                          OPT_FREE, SID_NONE);
        free_string_option(cmdmod.save_ei);
    }
#endif

    cmdmod = save_cmdmod;

    if (did_silent > 0)
    {
        /* messages could be enabled for a serious error, need to check if the
         * counters don't become negative */
        msg_silent -= did_silent;
        if (msg_silent < 0)
            msg_silent = 0;
        emsg_silent -= did_esilent;
        if (emsg_silent < 0)
            emsg_silent = 0;
        /* Restore msg_scroll, it's set by file I/O commands, even when no
         * message is actually displayed. */
        msg_scroll = save_msg_scroll;
    }

#ifdef HAVE_SANDBOX
    if (did_sandbox)
        --sandbox;
#endif

    if (ea.nextcmd && *ea.nextcmd == NUL)       /* not really a next command */
        ea.nextcmd = NULL;

#ifdef FEAT_EVAL
    --ex_nesting_level;
#endif

    return ea.nextcmd;
}
#if (_MSC_VER == 1200)
 #pragma optimize( "", on )
#endif

/*
 * Check for an Ex command with optional tail.
 * If there is a match advance "pp" to the argument and return TRUE.
 */
    int
checkforcmd(pp, cmd, len)
    char_u      **pp;           /* start of command */
    char        *cmd;           /* name of command */
    int         len;            /* required length */
{
    int         i;

    for (i = 0; cmd[i] != NUL; ++i)
        if (cmd[i] != (*pp)[i])
            break;
    if (i >= len && !isalpha((*pp)[i]))
    {
        *pp = skipwhite(*pp + i);
        return TRUE;
    }
    return FALSE;
}

/*
 * Find an Ex command by its name, either built-in or user.
 * Start of the name can be found at eap->cmd.
 * Returns pointer to char after the command name.
 * "full" is set to TRUE if the whole command name matched.
 * Returns NULL for an ambiguous user command.
 */
/*ARGSUSED*/
    static char_u *
find_command(eap, full)
    exarg_T     *eap;
    int         *full;
{
    int         len;
    char_u      *p;
    int         i;

    /*
     * Isolate the command and search for it in the command table.
     * Exeptions:
     * - the 'k' command can directly be followed by any character.
     * - the 's' command can be followed directly by 'c', 'g', 'i', 'I' or 'r'
     *      but :sre[wind] is another command, as are :scrip[tnames],
     *      :scs[cope], :sim[alt], :sig[ns] and :sil[ent].
     * - the "d" command can directly be followed by 'l' or 'p' flag.
     */
    p = eap->cmd;
    if (*p == 'k')
    {
        eap->cmdidx = CMD_k;
        ++p;
    }
    else if (p[0] == 's'
            && ((p[1] == 'c' && p[2] != 's' && p[2] != 'r'
                                                && p[3] != 'i' && p[4] != 'p')
                || p[1] == 'g'
                || (p[1] == 'i' && p[2] != 'm' && p[2] != 'l' && p[2] != 'g')
                || p[1] == 'I'
                || (p[1] == 'r' && p[2] != 'e')))
    {
        eap->cmdidx = CMD_substitute;
        ++p;
    }
    else
    {
        while (ASCII_ISALPHA(*p))
            ++p;
        /* check for non-alpha command */
        if (p == eap->cmd && vim_strchr((char_u *)"@*!=><&~#", *p) != NULL)
            ++p;
        len = (int)(p - eap->cmd);
        if (*eap->cmd == 'd' && (p[-1] == 'l' || p[-1] == 'p'))
        {
            /* Check for ":dl", ":dell", etc. to ":deletel": that's
             * :delete with the 'l' flag.  Same for 'p'. */
            for (i = 0; i < len; ++i)
                if (eap->cmd[i] != "delete"[i])
                    break;
            if (i == len - 1)
            {
                --len;
                if (p[-1] == 'l')
                    eap->flags |= EXFLAG_LIST;
                else
                    eap->flags |= EXFLAG_PRINT;
            }
        }

        if (ASCII_ISLOWER(*eap->cmd))
            eap->cmdidx = cmdidxs[CharOrdLow(*eap->cmd)];
        else
            eap->cmdidx = cmdidxs[26];

        for ( ; (int)eap->cmdidx < (int)CMD_SIZE;
                               eap->cmdidx = (cmdidx_T)((int)eap->cmdidx + 1))
            if (STRNCMP(cmdnames[(int)eap->cmdidx].cmd_name, (char *)eap->cmd,
                                                            (size_t)len) == 0)
            {
#ifdef FEAT_EVAL
                if (full != NULL
                           && cmdnames[(int)eap->cmdidx].cmd_name[len] == NUL)
                    *full = TRUE;
#endif
                break;
            }

#ifdef FEAT_USR_CMDS
        /* Look for a user defined command as a last resort */
        if (eap->cmdidx == CMD_SIZE && *eap->cmd >= 'A' && *eap->cmd <= 'Z')
        {
            /* User defined commands may contain digits. */
            while (ASCII_ISALNUM(*p))
                ++p;
            p = find_ucmd(eap, p, full, NULL, NULL);
        }
#endif
        if (p == eap->cmd)
            eap->cmdidx = CMD_SIZE;
    }

    return p;
}

#ifdef FEAT_USR_CMDS
/*
 * Search for a user command that matches "eap->cmd".
 * Return cmdidx in "eap->cmdidx", flags in "eap->argt", idx in "eap->useridx".
 * Return a pointer to just after the command.
 * Return NULL if there is no matching command.
 */
    static char_u *
find_ucmd(eap, p, full, xp, compl)
    exarg_T     *eap;
    char_u      *p;     /* end of the command (possibly including count) */
    int         *full;  /* set to TRUE for a full match */
    expand_T    *xp;    /* used for completion, NULL otherwise */
    int         *compl; /* completion flags or NULL */
{
    int         len = (int)(p - eap->cmd);
    int         j, k, matchlen = 0;
    ucmd_T      *uc;
    int         found = FALSE;
    int         possible = FALSE;
    char_u      *cp, *np;           /* Point into typed cmd and test name */
    garray_T    *gap;
    int         amb_local = FALSE;  /* Found ambiguous buffer-local command,
                                       only full match global is accepted. */

    /*
     * Look for buffer-local user commands first, then global ones.
     */
    gap = &curbuf->b_ucmds;
    for (;;)
    {
        for (j = 0; j < gap->ga_len; ++j)
        {
            uc = USER_CMD_GA(gap, j);
            cp = eap->cmd;
            np = uc->uc_name;
            k = 0;
            while (k < len && *np != NUL && *cp++ == *np++)
                k++;
            if (k == len || (*np == NUL && vim_isdigit(eap->cmd[k])))
            {
                /* If finding a second match, the command is ambiguous.  But
                 * not if a buffer-local command wasn't a full match and a
                 * global command is a full match. */
                if (k == len && found && *np != NUL)
                {
                    if (gap == &ucmds)
                        return NULL;
                    amb_local = TRUE;
                }

                if (!found || (k == len && *np == NUL))
                {
                    /* If we matched up to a digit, then there could
                     * be another command including the digit that we
                     * should use instead.
                     */
                    if (k == len)
                        found = TRUE;
                    else
                        possible = TRUE;

                    if (gap == &ucmds)
                        eap->cmdidx = CMD_USER;
                    else
                        eap->cmdidx = CMD_USER_BUF;
                    eap->argt = (long)uc->uc_argt;
                    eap->useridx = j;

# ifdef FEAT_CMDL_COMPL
                    if (compl != NULL)
                        *compl = uc->uc_compl;
#  ifdef FEAT_EVAL
                    if (xp != NULL)
                    {
                        xp->xp_arg = uc->uc_compl_arg;
                        xp->xp_scriptID = uc->uc_scriptID;
                    }
#  endif
# endif
                    /* Do not search for further abbreviations
                     * if this is an exact match. */
                    matchlen = k;
                    if (k == len && *np == NUL)
                    {
                        if (full != NULL)
                            *full = TRUE;
                        amb_local = FALSE;
                        break;
                    }
                }
            }
        }

        /* Stop if we found a full match or searched all. */
        if (j < gap->ga_len || gap == &ucmds)
            break;
        gap = &ucmds;
    }

    /* Only found ambiguous matches. */
    if (amb_local)
    {
        if (xp != NULL)
            xp->xp_context = EXPAND_UNSUCCESSFUL;
        return NULL;
    }

    /* The match we found may be followed immediately by a number.  Move "p"
     * back to point to it. */
    if (found || possible)
        return p + (matchlen - len);
    return p;
}
#endif

#if defined(FEAT_EVAL) || defined(PROTO)
/*
 * Return > 0 if an Ex command "name" exists.
 * Return 2 if there is an exact match.
 * Return 3 if there is an ambiguous match.
 */
    int
cmd_exists(name)
    char_u      *name;
{
    exarg_T     ea;
    int         full = FALSE;
    int         i;
    int         j;
    char_u      *p;
    static struct cmdmod
    {
        char    *name;
        int     minlen;
    } cmdmods[] = {
        {"aboveleft", 3},
        {"belowright", 3},
        {"botright", 2},
        {"browse", 3},
        {"confirm", 4},
        {"hide", 3},
        {"keepalt", 5},
        {"keepjumps", 5},
        {"keepmarks", 3},
        {"leftabove", 5},
        {"lockmarks", 3},
        {"rightbelow", 6},
        {"sandbox", 3},
        {"silent", 3},
        {"tab", 3},
        {"topleft", 2},
        {"verbose", 4},
        {"vertical", 4},
    };

    /* Check command modifiers. */
    for (i = 0; i < sizeof(cmdmods) / sizeof(struct cmdmod); ++i)
    {
        for (j = 0; name[j] != NUL; ++j)
            if (name[j] != cmdmods[i].name[j])
                break;
        if (name[j] == NUL && j >= cmdmods[i].minlen)
            return (cmdmods[i].name[j] == NUL ? 2 : 1);
    }

    /* Check built-in commands and user defined commands.
     * For ":2match" and ":3match" we need to skip the number. */
    ea.cmd = (*name == '2' || *name == '3') ? name + 1 : name;
    ea.cmdidx = (cmdidx_T)0;
    p = find_command(&ea, &full);
    if (p == NULL)
        return 3;
    if (vim_isdigit(*name) && ea.cmdidx != CMD_match)
        return 0;
    if (*skipwhite(p) != NUL)
        return 0;       /* trailing garbage */
    return (ea.cmdidx == CMD_SIZE ? 0 : (full ? 2 : 1));
}
#endif

/*
 * This is all pretty much copied from do_one_cmd(), with all the extra stuff
 * we don't need/want deleted.  Maybe this could be done better if we didn't
 * repeat all this stuff.  The only problem is that they may not stay
 * perfectly compatible with each other, but then the command line syntax
 * probably won't change that much -- webb.
 */
    char_u *
set_one_cmd_context(xp, buff)
    expand_T    *xp;
    char_u      *buff;      /* buffer for command string */
{
    char_u              *p;
    char_u              *cmd, *arg;
    int                 len = 0;
    exarg_T             ea;
#if defined(FEAT_USR_CMDS) && defined(FEAT_CMDL_COMPL)
    int                 compl = EXPAND_NOTHING;
#endif
#ifdef FEAT_CMDL_COMPL
    int                 delim;
#endif
    int                 forceit = FALSE;
    int                 usefilter = FALSE;  /* filter instead of file name */

    ExpandInit(xp);
    xp->xp_pattern = buff;
    xp->xp_context = EXPAND_COMMANDS;   /* Default until we get past command */
    ea.argt = 0;

/*
 * 2. skip comment lines and leading space, colons or bars
 */
    for (cmd = buff; vim_strchr((char_u *)" \t:|", *cmd) != NULL; cmd++)
        ;
    xp->xp_pattern = cmd;

    if (*cmd == NUL)
        return NULL;
    if (*cmd == '"')        /* ignore comment lines */
    {
        xp->xp_context = EXPAND_NOTHING;
        return NULL;
    }

/*
 * 3. parse a range specifier of the form: addr [,addr] [;addr] ..
 */
    cmd = skip_range(cmd, &xp->xp_context);

/*
 * 4. parse command
 */
    xp->xp_pattern = cmd;
    if (*cmd == NUL)
        return NULL;
    if (*cmd == '"')
    {
        xp->xp_context = EXPAND_NOTHING;
        return NULL;
    }

    if (*cmd == '|' || *cmd == '\n')
        return cmd + 1;                 /* There's another command */

    /*
     * Isolate the command and search for it in the command table.
     * Exceptions:
     * - the 'k' command can directly be followed by any character, but
     *   do accept "keepmarks", "keepalt" and "keepjumps".
     * - the 's' command can be followed directly by 'c', 'g', 'i', 'I' or 'r'
     */
    if (*cmd == 'k' && cmd[1] != 'e')
    {
        ea.cmdidx = CMD_k;
        p = cmd + 1;
    }
    else
    {
        p = cmd;
        while (ASCII_ISALPHA(*p) || *p == '*')    /* Allow * wild card */
            ++p;
        /* check for non-alpha command */
        if (p == cmd && vim_strchr((char_u *)"@*!=><&~#", *p) != NULL)
            ++p;
        len = (int)(p - cmd);

        if (len == 0)
        {
            xp->xp_context = EXPAND_UNSUCCESSFUL;
            return NULL;
        }
        for (ea.cmdidx = (cmdidx_T)0; (int)ea.cmdidx < (int)CMD_SIZE;
                                         ea.cmdidx = (cmdidx_T)((int)ea.cmdidx + 1))
            if (STRNCMP(cmdnames[(int)ea.cmdidx].cmd_name, cmd, (size_t)len) == 0)
                break;

#ifdef FEAT_USR_CMDS
        if (cmd[0] >= 'A' && cmd[0] <= 'Z')
        {
            while (ASCII_ISALNUM(*p) || *p == '*')      /* Allow * wild card */
                ++p;
            len = (int)(p - cmd);
        }
#endif
    }

    /*
     * If the cursor is touching the command, and it ends in an alpha-numeric
     * character, complete the command name.
     */
    if (*p == NUL && ASCII_ISALNUM(p[-1]))
        return NULL;

    if (ea.cmdidx == CMD_SIZE)
    {
        if (*cmd == 's' && vim_strchr((char_u *)"cgriI", cmd[1]) != NULL)
        {
            ea.cmdidx = CMD_substitute;
            p = cmd + 1;
        }
#ifdef FEAT_USR_CMDS
        else if (cmd[0] >= 'A' && cmd[0] <= 'Z')
        {
            ea.cmd = cmd;
            p = find_ucmd(&ea, p, NULL, xp,
# if defined(FEAT_CMDL_COMPL)
                    &compl
# else
                    NULL
# endif
                    );
            if (p == NULL)
                ea.cmdidx = CMD_SIZE;   /* ambiguous user command */
        }
#endif
    }
    if (ea.cmdidx == CMD_SIZE)
    {
        /* Not still touching the command and it was an illegal one */
        xp->xp_context = EXPAND_UNSUCCESSFUL;
        return NULL;
    }

    xp->xp_context = EXPAND_NOTHING; /* Default now that we're past command */

    if (*p == '!')                  /* forced commands */
    {
        forceit = TRUE;
        ++p;
    }

/*
 * 5. parse arguments
 */
#ifdef FEAT_USR_CMDS
    if (!USER_CMDIDX(ea.cmdidx))
#endif
        ea.argt = (long)cmdnames[(int)ea.cmdidx].cmd_argt;

    arg = skipwhite(p);

    if (ea.cmdidx == CMD_write || ea.cmdidx == CMD_update)
    {
        if (*arg == '>')                        /* append */
        {
            if (*++arg == '>')
                ++arg;
            arg = skipwhite(arg);
        }
        else if (*arg == '!' && ea.cmdidx == CMD_write) /* :w !filter */
        {
            ++arg;
            usefilter = TRUE;
        }
    }

    if (ea.cmdidx == CMD_read)
    {
        usefilter = forceit;                    /* :r! filter if forced */
        if (*arg == '!')                        /* :r !filter */
        {
            ++arg;
            usefilter = TRUE;
        }
    }

    if (ea.cmdidx == CMD_lshift || ea.cmdidx == CMD_rshift)
    {
        while (*arg == *cmd)        /* allow any number of '>' or '<' */
            ++arg;
        arg = skipwhite(arg);
    }

    /* Does command allow "+command"? */
    if ((ea.argt & EDITCMD) && !usefilter && *arg == '+')
    {
        /* Check if we're in the +command */
        p = arg + 1;
        arg = skip_cmd_arg(arg, FALSE);

        /* Still touching the command after '+'? */
        if (*arg == NUL)
            return p;

        /* Skip space(s) after +command to get to the real argument */
        arg = skipwhite(arg);
    }

    /*
     * Check for '|' to separate commands and '"' to start comments.
     * Don't do this for ":read !cmd" and ":write !cmd".
     */
    if ((ea.argt & TRLBAR) && !usefilter)
    {
        p = arg;
        /* ":redir @" is not the start of a comment */
        if (ea.cmdidx == CMD_redir && p[0] == '@' && p[1] == '"')
            p += 2;
        while (*p)
        {
            if (*p == Ctrl_V)
            {
                if (p[1] != NUL)
                    ++p;
            }
            else if ( (*p == '"' && !(ea.argt & NOTRLCOM))
                    || *p == '|' || *p == '\n')
            {
                if (*(p - 1) != '\\')
                {
                    if (*p == '|' || *p == '\n')
                        return p + 1;
                    return NULL;    /* It's a comment */
                }
            }
            mb_ptr_adv(p);
        }
    }

                                                /* no arguments allowed */
    if (!(ea.argt & EXTRA) && *arg != NUL &&
                                    vim_strchr((char_u *)"|\"", *arg) == NULL)
        return NULL;

    /* Find start of last argument (argument just before cursor): */
    p = buff + STRLEN(buff);
    while (p != arg && *p != ' ' && *p != TAB)
        p--;
    if (*p == ' ' || *p == TAB)
        p++;
    xp->xp_pattern = p;

    if (ea.argt & XFILE)
    {
        int in_quote = FALSE;
        char_u *bow = NULL;     /* Beginning of word */

        /*
         * Allow spaces within back-quotes to count as part of the argument
         * being expanded.
         */
        xp->xp_pattern = skipwhite(arg);
        for (p = xp->xp_pattern; *p; )
        {
            if (*p == '\\' && p[1] != NUL)
                ++p;
#ifdef SPACE_IN_FILENAME
            else if (vim_iswhite(*p) && (!(ea.argt & NOSPC) || usefilter))
#else
            else if (vim_iswhite(*p))
#endif
            {
                p = skipwhite(p);
                if (in_quote)
                    bow = p;
                else
                    xp->xp_pattern = p;
                --p;
            }
            else if (*p == '`')
            {
                if (!in_quote)
                {
                    xp->xp_pattern = p;
                    bow = p + 1;
                }
                in_quote = !in_quote;
            }
            mb_ptr_adv(p);
        }

        /*
         * If we are still inside the quotes, and we passed a space, just
         * expand from there.
         */
        if (bow != NULL && in_quote)
            xp->xp_pattern = bow;
        xp->xp_context = EXPAND_FILES;

#ifndef BACKSLASH_IN_FILENAME
        /* For a shell command more chars need to be escaped. */
        if (usefilter || ea.cmdidx == CMD_bang)
        {
            xp->xp_shell = TRUE;

            /* When still after the command name expand executables. */
            if (xp->xp_pattern == skipwhite(arg))
                xp->xp_context = EXPAND_SHELLCMD;
        }
#endif

        /* Check for environment variable */
        if (*xp->xp_pattern == '$'
#if defined(MSDOS) || defined(MSWIN) || defined(OS2)
                || *xp->xp_pattern == '%'
#endif
                )
        {
            for (p = xp->xp_pattern + 1; *p != NUL; ++p)
                if (!vim_isIDc(*p))
                    break;
            if (*p == NUL)
            {
                xp->xp_context = EXPAND_ENV_VARS;
                ++xp->xp_pattern;
#if defined(FEAT_USR_CMDS) && defined(FEAT_CMDL_COMPL)
                /* Avoid that the assignment uses EXPAND_FILES again. */
                if (compl != EXPAND_USER_DEFINED && compl != EXPAND_USER_LIST)
                    compl = EXPAND_ENV_VARS;
#endif
            }
        }
    }

/*
 * 6. switch on command name
 */
    switch (ea.cmdidx)
    {
        case CMD_cd:
        case CMD_chdir:
        case CMD_lcd:
        case CMD_lchdir:
            if (xp->xp_context == EXPAND_FILES)
                xp->xp_context = EXPAND_DIRECTORIES;
            break;
        case CMD_help:
            xp->xp_context = EXPAND_HELP;
            xp->xp_pattern = arg;
            break;

        /* Command modifiers: return the argument.
         * Also for commands with an argument that is a command. */
        case CMD_aboveleft:
        case CMD_argdo:
        case CMD_belowright:
        case CMD_botright:
        case CMD_browse:
        case CMD_bufdo:
        case CMD_confirm:
        case CMD_debug:
        case CMD_folddoclosed:
        case CMD_folddoopen:
        case CMD_hide:
        case CMD_keepalt:
        case CMD_keepjumps:
        case CMD_keepmarks:
        case CMD_leftabove:
        case CMD_lockmarks:
        case CMD_rightbelow:
        case CMD_sandbox:
        case CMD_silent:
        case CMD_tab:
        case CMD_topleft:
        case CMD_verbose:
        case CMD_vertical:
        case CMD_windo:
            return arg;

#ifdef FEAT_SEARCH_EXTRA
        case CMD_match:
            if (*arg == NUL || !ends_excmd(*arg))
            {
                /* Dummy call to clear variables. */
                set_context_in_highlight_cmd(xp, (char_u *)"link n");
                xp->xp_context = EXPAND_HIGHLIGHT;
                xp->xp_pattern = arg;
                arg = skipwhite(skiptowhite(arg));
                if (*arg != NUL)
                {
                    xp->xp_context = EXPAND_NOTHING;
                    arg = skip_regexp(arg + 1, *arg, p_magic, NULL);
                }
            }
            return find_nextcmd(arg);
#endif

#ifdef FEAT_CMDL_COMPL
/*
 * All completion for the +cmdline_compl feature goes here.
 */

# ifdef FEAT_USR_CMDS
        case CMD_command:
            /* Check for attributes */
            while (*arg == '-')
            {
                arg++;      /* Skip "-" */
                p = skiptowhite(arg);
                if (*p == NUL)
                {
                    /* Cursor is still in the attribute */
                    p = vim_strchr(arg, '=');
                    if (p == NULL)
                    {
                        /* No "=", so complete attribute names */
                        xp->xp_context = EXPAND_USER_CMD_FLAGS;
                        xp->xp_pattern = arg;
                        return NULL;
                    }

                    /* For the -complete and -nargs attributes, we complete
                     * their arguments as well.
                     */
                    if (STRNICMP(arg, "complete", p - arg) == 0)
                    {
                        xp->xp_context = EXPAND_USER_COMPLETE;
                        xp->xp_pattern = p + 1;
                        return NULL;
                    }
                    else if (STRNICMP(arg, "nargs", p - arg) == 0)
                    {
                        xp->xp_context = EXPAND_USER_NARGS;
                        xp->xp_pattern = p + 1;
                        return NULL;
                    }
                    return NULL;
                }
                arg = skipwhite(p);
            }

            /* After the attributes comes the new command name */
            p = skiptowhite(arg);
            if (*p == NUL)
            {
                xp->xp_context = EXPAND_USER_COMMANDS;
                xp->xp_pattern = arg;
                break;
            }

            /* And finally comes a normal command */
            return skipwhite(p);

        case CMD_delcommand:
            xp->xp_context = EXPAND_USER_COMMANDS;
            xp->xp_pattern = arg;
            break;
# endif

        case CMD_global:
        case CMD_vglobal:
            delim = *arg;           /* get the delimiter */
            if (delim)
                ++arg;              /* skip delimiter if there is one */

            while (arg[0] != NUL && arg[0] != delim)
            {
                if (arg[0] == '\\' && arg[1] != NUL)
                    ++arg;
                ++arg;
            }
            if (arg[0] != NUL)
                return arg + 1;
            break;
        case CMD_and:
        case CMD_substitute:
            delim = *arg;
            if (delim)
            {
                /* skip "from" part */
                ++arg;
                arg = skip_regexp(arg, delim, p_magic, NULL);
            }
            /* skip "to" part */
            while (arg[0] != NUL && arg[0] != delim)
            {
                if (arg[0] == '\\' && arg[1] != NUL)
                    ++arg;
                ++arg;
            }
            if (arg[0] != NUL)  /* skip delimiter */
                ++arg;
            while (arg[0] && vim_strchr((char_u *)"|\"#", arg[0]) == NULL)
                ++arg;
            if (arg[0] != NUL)
                return arg;
            break;
        case CMD_isearch:
        case CMD_dsearch:
        case CMD_ilist:
        case CMD_dlist:
        case CMD_ijump:
        case CMD_psearch:
        case CMD_djump:
        case CMD_isplit:
        case CMD_dsplit:
            arg = skipwhite(skipdigits(arg));       /* skip count */
            if (*arg == '/')    /* Match regexp, not just whole words */
            {
                for (++arg; *arg && *arg != '/'; arg++)
                    if (*arg == '\\' && arg[1] != NUL)
                        arg++;
                if (*arg)
                {
                    arg = skipwhite(arg + 1);

                    /* Check for trailing illegal characters */
                    if (*arg && vim_strchr((char_u *)"|\"\n", *arg) == NULL)
                        xp->xp_context = EXPAND_NOTHING;
                    else
                        return arg;
                }
            }
            break;
#ifdef FEAT_AUTOCMD
        case CMD_autocmd:
            return set_context_in_autocmd(xp, arg, FALSE);

        case CMD_doautocmd:
            return set_context_in_autocmd(xp, arg, TRUE);
#endif
        case CMD_set:
            set_context_in_set_cmd(xp, arg, 0);
            break;
        case CMD_setglobal:
            set_context_in_set_cmd(xp, arg, OPT_GLOBAL);
            break;
        case CMD_setlocal:
            set_context_in_set_cmd(xp, arg, OPT_LOCAL);
            break;
        case CMD_tag:
        case CMD_stag:
        case CMD_ptag:
        case CMD_ltag:
        case CMD_tselect:
        case CMD_stselect:
        case CMD_ptselect:
        case CMD_tjump:
        case CMD_stjump:
        case CMD_ptjump:
            if (*p_wop != NUL)
                xp->xp_context = EXPAND_TAGS_LISTFILES;
            else
                xp->xp_context = EXPAND_TAGS;
            xp->xp_pattern = arg;
            break;
        case CMD_augroup:
            xp->xp_context = EXPAND_AUGROUP;
            xp->xp_pattern = arg;
            break;
#ifdef FEAT_SYN_HL
        case CMD_syntax:
            set_context_in_syntax_cmd(xp, arg);
            break;
#endif
#ifdef FEAT_EVAL
        case CMD_let:
        case CMD_if:
        case CMD_elseif:
        case CMD_while:
        case CMD_for:
        case CMD_echo:
        case CMD_echon:
        case CMD_execute:
        case CMD_echomsg:
        case CMD_echoerr:
        case CMD_call:
        case CMD_return:
            set_context_for_expression(xp, arg, ea.cmdidx);
            break;

        case CMD_unlet:
            while ((xp->xp_pattern = vim_strchr(arg, ' ')) != NULL)
                arg = xp->xp_pattern + 1;
            xp->xp_context = EXPAND_USER_VARS;
            xp->xp_pattern = arg;
            break;

        case CMD_function:
        case CMD_delfunction:
            xp->xp_context = EXPAND_USER_FUNC;
            xp->xp_pattern = arg;
            break;

        case CMD_echohl:
            xp->xp_context = EXPAND_HIGHLIGHT;
            xp->xp_pattern = arg;
            break;
#endif
        case CMD_highlight:
            set_context_in_highlight_cmd(xp, arg);
            break;
#ifdef FEAT_LISTCMDS
        case CMD_bdelete:
        case CMD_bwipeout:
        case CMD_bunload:
            while ((xp->xp_pattern = vim_strchr(arg, ' ')) != NULL)
                arg = xp->xp_pattern + 1;
            /*FALLTHROUGH*/
        case CMD_buffer:
        case CMD_sbuffer:
        case CMD_checktime:
            xp->xp_context = EXPAND_BUFFERS;
            xp->xp_pattern = arg;
            break;
#endif
#ifdef FEAT_USR_CMDS
        case CMD_USER:
        case CMD_USER_BUF:
            if (compl != EXPAND_NOTHING)
            {
                /* XFILE: file names are handled above */
                if (!(ea.argt & XFILE))
                {
# ifdef FEAT_MENU
                    if (compl == EXPAND_MENUS)
                        return set_context_in_menu_cmd(xp, cmd, arg, forceit);
# endif
                    if (compl == EXPAND_COMMANDS)
                        return arg;
                    if (compl == EXPAND_MAPPINGS)
                        return set_context_in_map_cmd(xp, (char_u *)"map",
                                         arg, forceit, FALSE, FALSE, CMD_map);
                    while ((xp->xp_pattern = vim_strchr(arg, ' ')) != NULL)
                        arg = xp->xp_pattern + 1;
                    xp->xp_pattern = arg;
                }
                xp->xp_context = compl;
            }
            break;
#endif
        case CMD_map:       case CMD_noremap:
        case CMD_nmap:      case CMD_nnoremap:
        case CMD_vmap:      case CMD_vnoremap:
        case CMD_omap:      case CMD_onoremap:
        case CMD_imap:      case CMD_inoremap:
        case CMD_cmap:      case CMD_cnoremap:
            return set_context_in_map_cmd(xp, cmd, arg, forceit,
                                                        FALSE, FALSE, ea.cmdidx);
        case CMD_unmap:
        case CMD_nunmap:
        case CMD_vunmap:
        case CMD_ounmap:
        case CMD_iunmap:
        case CMD_cunmap:
            return set_context_in_map_cmd(xp, cmd, arg, forceit,
                                                         FALSE, TRUE, ea.cmdidx);
        case CMD_abbreviate:    case CMD_noreabbrev:
        case CMD_cabbrev:       case CMD_cnoreabbrev:
        case CMD_iabbrev:       case CMD_inoreabbrev:
            return set_context_in_map_cmd(xp, cmd, arg, forceit,
                                                         TRUE, FALSE, ea.cmdidx);
        case CMD_unabbreviate:
        case CMD_cunabbrev:
        case CMD_iunabbrev:
            return set_context_in_map_cmd(xp, cmd, arg, forceit,
                                                          TRUE, TRUE, ea.cmdidx);
#ifdef FEAT_MENU
        case CMD_menu:      case CMD_noremenu:      case CMD_unmenu:
        case CMD_amenu:     case CMD_anoremenu:     case CMD_aunmenu:
        case CMD_nmenu:     case CMD_nnoremenu:     case CMD_nunmenu:
        case CMD_vmenu:     case CMD_vnoremenu:     case CMD_vunmenu:
        case CMD_omenu:     case CMD_onoremenu:     case CMD_ounmenu:
        case CMD_imenu:     case CMD_inoremenu:     case CMD_iunmenu:
        case CMD_cmenu:     case CMD_cnoremenu:     case CMD_cunmenu:
        case CMD_tmenu:                             case CMD_tunmenu:
        case CMD_popup:     case CMD_tearoff:       case CMD_emenu:
            return set_context_in_menu_cmd(xp, cmd, arg, forceit);
#endif

        case CMD_colorscheme:
            xp->xp_context = EXPAND_COLORS;
            xp->xp_pattern = arg;
            break;

        case CMD_compiler:
            xp->xp_context = EXPAND_COMPILER;
            xp->xp_pattern = arg;
            break;

#if (defined(HAVE_LOCALE_H) || defined(X_LOCALE)) \
        && (defined(FEAT_GETTEXT) || defined(FEAT_MBYTE))
        case CMD_language:
            if (*skiptowhite(arg) == NUL)
            {
                xp->xp_context = EXPAND_LANGUAGE;
                xp->xp_pattern = arg;
            }
            else
                xp->xp_context = EXPAND_NOTHING;
            break;
#endif

#endif /* FEAT_CMDL_COMPL */

        default:
            break;
    }
    return NULL;
}

/*
 * skip a range specifier of the form: addr [,addr] [;addr] ..
 *
 * Backslashed delimiters after / or ? will be skipped, and commands will
 * not be expanded between /'s and ?'s or after "'".
 *
 * Also skip white space and ":" characters.
 * Returns the "cmd" pointer advanced to beyond the range.
 */
    char_u *
skip_range(cmd, ctx)
    char_u      *cmd;
    int         *ctx;   /* pointer to xp_context or NULL */
{
    int         delim;

    while (vim_strchr((char_u *)" \t0123456789.$%'/?-+,;", *cmd) != NULL)
    {
        if (*cmd == '\'')
        {
            if (*++cmd == NUL && ctx != NULL)
                *ctx = EXPAND_NOTHING;
        }
        else if (*cmd == '/' || *cmd == '?')
        {
            delim = *cmd++;
            while (*cmd != NUL && *cmd != delim)
                if (*cmd++ == '\\' && *cmd != NUL)
                    ++cmd;
            if (*cmd == NUL && ctx != NULL)
                *ctx = EXPAND_NOTHING;
        }
        if (*cmd != NUL)
            ++cmd;
    }

    /* Skip ":" and white space. */
    while (*cmd == ':')
        cmd = skipwhite(cmd + 1);

    return cmd;
}

/*
 * get a single EX address
 *
 * Set ptr to the next character after the part that was interpreted.
 * Set ptr to NULL when an error is encountered.
 *
 * Return MAXLNUM when no Ex address was found.
 */
    static linenr_T
get_address(ptr, skip, to_other_file)
    char_u      **ptr;
    int         skip;       /* only skip the address, don't use it */
    int         to_other_file;  /* flag: may jump to other file */
{
    int         c;
    int         i;
    long        n;
    char_u      *cmd;
    pos_T       pos;
    pos_T       *fp;
    linenr_T    lnum;

    cmd = skipwhite(*ptr);
    lnum = MAXLNUM;
    do
    {
        switch (*cmd)
        {
            case '.':                       /* '.' - Cursor position */
                        ++cmd;
                        lnum = curwin->w_cursor.lnum;
                        break;

            case '$':                       /* '$' - last line */
                        ++cmd;
                        lnum = curbuf->b_ml.ml_line_count;
                        break;

            case '\'':                      /* ''' - mark */
                        if (*++cmd == NUL)
                        {
                            cmd = NULL;
                            goto error;
                        }
                        if (skip)
                            ++cmd;
                        else
                        {
                            /* Only accept a mark in another file when it is
                             * used by itself: ":'M". */
                            fp = getmark(*cmd, to_other_file && cmd[1] == NUL);
                            ++cmd;
                            if (fp == (pos_T *)-1)
                                /* Jumped to another file. */
                                lnum = curwin->w_cursor.lnum;
                            else
                            {
                                if (check_mark(fp) == FAIL)
                                {
                                    cmd = NULL;
                                    goto error;
                                }
                                lnum = fp->lnum;
                            }
                        }
                        break;

            case '/':
            case '?':                   /* '/' or '?' - search */
                        c = *cmd++;
                        if (skip)       /* skip "/pat/" */
                        {
                            cmd = skip_regexp(cmd, c, (int)p_magic, NULL);
                            if (*cmd == c)
                                ++cmd;
                        }
                        else
                        {
                            pos = curwin->w_cursor; /* save curwin->w_cursor */
                            /*
                             * When '/' or '?' follows another address, start
                             * from there.
                             */
                            if (lnum != MAXLNUM)
                                curwin->w_cursor.lnum = lnum;
                            /*
                             * Start a forward search at the end of the line.
                             * Start a backward search at the start of the line.
                             * This makes sure we never match in the current
                             * line, and can match anywhere in the
                             * next/previous line.
                             */
                            if (c == '/')
                                curwin->w_cursor.col = MAXCOL;
                            else
                                curwin->w_cursor.col = 0;
                            searchcmdlen = 0;
                            if (!do_search(NULL, c, cmd, 1L,
                                      SEARCH_HIS + SEARCH_MSG + SEARCH_START))
                            {
                                curwin->w_cursor = pos;
                                cmd = NULL;
                                goto error;
                            }
                            lnum = curwin->w_cursor.lnum;
                            curwin->w_cursor = pos;
                            /* adjust command string pointer */
                            cmd += searchcmdlen;
                        }
                        break;

            case '\\':              /* "\?", "\/" or "\&", repeat search */
                        ++cmd;
                        if (*cmd == '&')
                            i = RE_SUBST;
                        else if (*cmd == '?' || *cmd == '/')
                            i = RE_SEARCH;
                        else
                        {
                            EMSG(_(e_backslash));
                            cmd = NULL;
                            goto error;
                        }

                        if (!skip)
                        {
                            /*
                             * When search follows another address, start from
                             * there.
                             */
                            if (lnum != MAXLNUM)
                                pos.lnum = lnum;
                            else
                                pos.lnum = curwin->w_cursor.lnum;

                            /*
                             * Start the search just like for the above
                             * do_search().
                             */
                            if (*cmd != '?')
                                pos.col = MAXCOL;
                            else
                                pos.col = 0;
                            if (searchit(curwin, curbuf, &pos,
                                        *cmd == '?' ? BACKWARD : FORWARD,
                                        (char_u *)"", 1L,
                                        SEARCH_MSG + SEARCH_START,
                                                      i, (linenr_T)0) != FAIL)
                                lnum = pos.lnum;
                            else
                            {
                                cmd = NULL;
                                goto error;
                            }
                        }
                        ++cmd;
                        break;

            default:
                        if (VIM_ISDIGIT(*cmd))  /* absolute line number */
                            lnum = getdigits(&cmd);
        }

        for (;;)
        {
            cmd = skipwhite(cmd);
            if (*cmd != '-' && *cmd != '+' && !VIM_ISDIGIT(*cmd))
                break;

            if (lnum == MAXLNUM)
                lnum = curwin->w_cursor.lnum;   /* "+1" is same as ".+1" */
            if (VIM_ISDIGIT(*cmd))
                i = '+';                /* "number" is same as "+number" */
            else
                i = *cmd++;
            if (!VIM_ISDIGIT(*cmd))     /* '+' is '+1', but '+0' is not '+1' */
                n = 1;
            else
                n = getdigits(&cmd);
            if (i == '-')
                lnum -= n;
            else
                lnum += n;
        }
    } while (*cmd == '/' || *cmd == '?');

error:
    *ptr = cmd;
    return lnum;
}

/*
 * Get flags from an Ex command argument.
 */
    static void
get_flags(eap)
    exarg_T *eap;
{
    while (vim_strchr((char_u *)"lp#", *eap->arg) != NULL)
    {
        if (*eap->arg == 'l')
            eap->flags |= EXFLAG_LIST;
        else if (*eap->arg == 'p')
            eap->flags |= EXFLAG_PRINT;
        else
            eap->flags |= EXFLAG_NR;
        eap->arg = skipwhite(eap->arg + 1);
    }
}

/*
 * Function called for command which is Not Implemented.  NI!
 */
    void
ex_ni(eap)
    exarg_T     *eap;
{
    if (!eap->skip)
        eap->errmsg = (char_u *)N_("E319: Sorry, the command is not available in this version");
}

#if !defined(FEAT_PERL) || !defined(FEAT_PYTHON) || !defined(FEAT_TCL) \
        || !defined(FEAT_RUBY) || !defined(FEAT_MZSCHEME)
/*
 * Function called for script command which is Not Implemented.  NI!
 * Skips over ":perl <<EOF" constructs.
 */
    static void
ex_script_ni(eap)
    exarg_T     *eap;
{
    if (!eap->skip)
        ex_ni(eap);
    else
        vim_free(script_get(eap, eap->arg));
}
#endif

/*
 * Check range in Ex command for validity.
 * Return NULL when valid, error message when invalid.
 */
    static char_u *
invalid_range(eap)
    exarg_T     *eap;
{
    if (       eap->line1 < 0
            || eap->line2 < 0
            || eap->line1 > eap->line2
            || ((eap->argt & RANGE)
                && !(eap->argt & NOTADR)
                && eap->line2 > curbuf->b_ml.ml_line_count
#ifdef FEAT_DIFF
                        + (eap->cmdidx == CMD_diffget)
#endif
                ))
        return (char_u *)_(e_invrange);
    return NULL;
}

/*
 * Correct the range for zero line number, if required.
 */
    static void
correct_range(eap)
    exarg_T     *eap;
{
    if (!(eap->argt & ZEROR))       /* zero in range not allowed */
    {
        if (eap->line1 == 0)
            eap->line1 = 1;
        if (eap->line2 == 0)
            eap->line2 = 1;
    }
}

#ifdef FEAT_QUICKFIX
static char_u   *skip_grep_pat __ARGS((exarg_T *eap));

/*
 * For a ":vimgrep" or ":vimgrepadd" command return a pointer past the
 * pattern.  Otherwise return eap->arg.
 */
    static char_u *
skip_grep_pat(eap)
    exarg_T     *eap;
{
    char_u      *p = eap->arg;

    if (*p != NUL && (eap->cmdidx == CMD_vimgrep || eap->cmdidx == CMD_lvimgrep
                || eap->cmdidx == CMD_vimgrepadd
                || eap->cmdidx == CMD_lvimgrepadd
                || grep_internal(eap->cmdidx)))
    {
        p = skip_vimgrep_pat(p, NULL, NULL);
        if (p == NULL)
            p = eap->arg;
    }
    return p;
}

/*
 * For the ":make" and ":grep" commands insert the 'makeprg'/'grepprg' option
 * in the command line, so that things like % get expanded.
 */
    static char_u *
replace_makeprg(eap, p, cmdlinep)
    exarg_T     *eap;
    char_u      *p;
    char_u      **cmdlinep;
{
    char_u      *new_cmdline;
    char_u      *program;
    char_u      *pos;
    char_u      *ptr;
    int         len;
    int         i;

    /*
     * Don't do it when ":vimgrep" is used for ":grep".
     */
    if ((eap->cmdidx == CMD_make || eap->cmdidx == CMD_lmake
                     || eap->cmdidx == CMD_grep || eap->cmdidx == CMD_lgrep
                     || eap->cmdidx == CMD_grepadd
                     || eap->cmdidx == CMD_lgrepadd)
            && !grep_internal(eap->cmdidx))
    {
        if (eap->cmdidx == CMD_grep || eap->cmdidx == CMD_lgrep
            || eap->cmdidx == CMD_grepadd || eap->cmdidx == CMD_lgrepadd)
        {
            if (*curbuf->b_p_gp == NUL)
                program = p_gp;
            else
                program = curbuf->b_p_gp;
        }
        else
        {
            if (*curbuf->b_p_mp == NUL)
                program = p_mp;
            else
                program = curbuf->b_p_mp;
        }

        p = skipwhite(p);

        if ((pos = (char_u *)strstr((char *)program, "$*")) != NULL)
        {
            /* replace $* by given arguments */
            i = 1;
            while ((pos = (char_u *)strstr((char *)pos + 2, "$*")) != NULL)
                ++i;
            len = (int)STRLEN(p);
            new_cmdline = alloc((int)(STRLEN(program) + i * (len - 2) + 1));
            if (new_cmdline == NULL)
                return NULL;                    /* out of memory */
            ptr = new_cmdline;
            while ((pos = (char_u *)strstr((char *)program, "$*")) != NULL)
            {
                i = (int)(pos - program);
                STRNCPY(ptr, program, i);
                STRCPY(ptr += i, p);
                ptr += len;
                program = pos + 2;
            }
            STRCPY(ptr, program);
        }
        else
        {
            new_cmdline = alloc((int)(STRLEN(program) + STRLEN(p) + 2));
            if (new_cmdline == NULL)
                return NULL;                    /* out of memory */
            STRCPY(new_cmdline, program);
            STRCAT(new_cmdline, " ");
            STRCAT(new_cmdline, p);
        }
        msg_make(p);

        /* 'eap->cmd' is not set here, because it is not used at CMD_make */
        vim_free(*cmdlinep);
        *cmdlinep = new_cmdline;
        p = new_cmdline;
    }
    return p;
}
#endif

/*
 * Expand file name in Ex command argument.
 * Return FAIL for failure, OK otherwise.
 */
    int
expand_filename(eap, cmdlinep, errormsgp)
    exarg_T     *eap;
    char_u      **cmdlinep;
    char_u      **errormsgp;
{
    int         has_wildcards;  /* need to expand wildcards */
    char_u      *repl;
    int         srclen;
    char_u      *p;
    int         n;
    int         escaped;

#ifdef FEAT_QUICKFIX
    /* Skip a regexp pattern for ":vimgrep[add] pat file..." */
    p = skip_grep_pat(eap);
#else
    p = eap->arg;
#endif

    /*
     * Decide to expand wildcards *before* replacing '%', '#', etc.  If
     * the file name contains a wildcard it should not cause expanding.
     * (it will be expanded anyway if there is a wildcard before replacing).
     */
    has_wildcards = mch_has_wildcard(p);
    while (*p != NUL)
    {
#ifdef FEAT_EVAL
        /* Skip over `=expr`, wildcards in it are not expanded. */
        if (p[0] == '`' && p[1] == '=')
        {
            p += 2;
            (void)skip_expr(&p);
            if (*p == '`')
                ++p;
            continue;
        }
#endif
        /*
         * Quick check if this cannot be the start of a special string.
         * Also removes backslash before '%', '#' and '<'.
         */
        if (vim_strchr((char_u *)"%#<", *p) == NULL)
        {
            ++p;
            continue;
        }

        /*
         * Try to find a match at this position.
         */
        repl = eval_vars(p, eap->arg, &srclen, &(eap->do_ecmd_lnum),
                                                         errormsgp, &escaped);
        if (*errormsgp != NULL)         /* error detected */
            return FAIL;
        if (repl == NULL)               /* no match found */
        {
            p += srclen;
            continue;
        }

        /* Wildcards won't be expanded below, the replacement is taken
         * literally.  But do expand "~/file", "~user/file" and "$HOME/file". */
        if (vim_strchr(repl, '$') != NULL || vim_strchr(repl, '~') != NULL)
        {
            char_u *l = repl;

            repl = expand_env_save(repl);
            vim_free(l);
        }

        /* Need to escape white space et al. with a backslash.
         * Don't do this for:
         * - replacement that already has been escaped: "##"
         * - shell commands (may have to use quotes instead).
         * - non-unix systems when there is a single argument (spaces don't
         *   separate arguments then).
         */
        if (!eap->usefilter
                && !escaped
                && eap->cmdidx != CMD_bang
                && eap->cmdidx != CMD_make
                && eap->cmdidx != CMD_lmake
                && eap->cmdidx != CMD_grep
                && eap->cmdidx != CMD_lgrep
                && eap->cmdidx != CMD_grepadd
                && eap->cmdidx != CMD_lgrepadd
#ifndef UNIX
                && !(eap->argt & NOSPC)
#endif
                )
        {
            char_u      *l;
#ifdef BACKSLASH_IN_FILENAME
            /* Don't escape a backslash here, because rem_backslash() doesn't
             * remove it later. */
            static char_u *nobslash = (char_u *)" \t\"|";
# define ESCAPE_CHARS nobslash
#else
# define ESCAPE_CHARS escape_chars
#endif

            for (l = repl; *l; ++l)
                if (vim_strchr(ESCAPE_CHARS, *l) != NULL)
                {
                    l = vim_strsave_escaped(repl, ESCAPE_CHARS);
                    if (l != NULL)
                    {
                        vim_free(repl);
                        repl = l;
                    }
                    break;
                }
        }

        /* For a shell command a '!' must be escaped. */
        if ((eap->usefilter || eap->cmdidx == CMD_bang)
                            && vim_strpbrk(repl, (char_u *)"!&;()<>") != NULL)
        {
            char_u      *l;

            l = vim_strsave_escaped(repl, (char_u *)"!&;()<>");
            if (l != NULL)
            {
                vim_free(repl);
                repl = l;
                /* For a sh-like shell escape "!" another time. */
                if (strstr((char *)p_sh, "sh") != NULL)
                {
                    l = vim_strsave_escaped(repl, (char_u *)"!");
                    if (l != NULL)
                    {
                        vim_free(repl);
                        repl = l;
                    }
                }
            }
        }

        p = repl_cmdline(eap, p, srclen, repl, cmdlinep);
        vim_free(repl);
        if (p == NULL)
            return FAIL;
    }

    /*
     * One file argument: Expand wildcards.
     * Don't do this with ":r !command" or ":w !command".
     */
    if ((eap->argt & NOSPC) && !eap->usefilter)
    {
        /*
         * May do this twice:
         * 1. Replace environment variables.
         * 2. Replace any other wildcards, remove backslashes.
         */
        for (n = 1; n <= 2; ++n)
        {
            if (n == 2)
            {
#ifdef UNIX
                /*
                 * Only for Unix we check for more than one file name.
                 * For other systems spaces are considered to be part
                 * of the file name.
                 * Only check here if there is no wildcard, otherwise
                 * ExpandOne() will check for errors. This allows
                 * ":e `ls ve*.c`" on Unix.
                 */
                if (!has_wildcards)
                    for (p = eap->arg; *p; ++p)
                    {
                        /* skip escaped characters */
                        if (p[1] && (*p == '\\' || *p == Ctrl_V))
                            ++p;
                        else if (vim_iswhite(*p))
                        {
                            *errormsgp = (char_u *)_("E172: Only one file name allowed");
                            return FAIL;
                        }
                    }
#endif

                /*
                 * Halve the number of backslashes (this is Vi compatible).
                 * For Unix and OS/2, when wildcards are expanded, this is
                 * done by ExpandOne() below.
                 */
#if defined(UNIX) || defined(OS2)
                if (!has_wildcards)
#endif
                    backslash_halve(eap->arg);
            }

            if (has_wildcards)
            {
                if (n == 1)
                {
                    /*
                     * First loop: May expand environment variables.  This
                     * can be done much faster with expand_env() than with
                     * something else (e.g., calling a shell).
                     * After expanding environment variables, check again
                     * if there are still wildcards present.
                     */
                    if (vim_strchr(eap->arg, '$') != NULL
                            || vim_strchr(eap->arg, '~') != NULL)
                    {
                        expand_env_esc(eap->arg, NameBuff, MAXPATHL,
                                                                 TRUE, NULL);
                        has_wildcards = mch_has_wildcard(NameBuff);
                        p = NameBuff;
                    }
                    else
                        p = NULL;
                }
                else /* n == 2 */
                {
                    expand_T    xpc;

                    ExpandInit(&xpc);
                    xpc.xp_context = EXPAND_FILES;
                    p = ExpandOne(&xpc, eap->arg, NULL,
                                            WILD_LIST_NOTFOUND|WILD_ADD_SLASH,
                                                   WILD_EXPAND_FREE);
                    if (p == NULL)
                        return FAIL;
                }
                if (p != NULL)
                {
                    (void)repl_cmdline(eap, eap->arg, (int)STRLEN(eap->arg),
                                                                 p, cmdlinep);
                    if (n == 2) /* p came from ExpandOne() */
                        vim_free(p);
                }
            }
        }
    }
    return OK;
}

/*
 * Replace part of the command line, keeping eap->cmd, eap->arg and
 * eap->nextcmd correct.
 * "src" points to the part that is to be replaced, of length "srclen".
 * "repl" is the replacement string.
 * Returns a pointer to the character after the replaced string.
 * Returns NULL for failure.
 */
    static char_u *
repl_cmdline(eap, src, srclen, repl, cmdlinep)
    exarg_T     *eap;
    char_u      *src;
    int         srclen;
    char_u      *repl;
    char_u      **cmdlinep;
{
    int         len;
    int         i;
    char_u      *new_cmdline;

    /*
     * The new command line is build in new_cmdline[].
     * First allocate it.
     * Careful: a "+cmd" argument may have been NUL terminated.
     */
    len = (int)STRLEN(repl);
    i = (int)(src - *cmdlinep) + (int)STRLEN(src + srclen) + len + 3;
    if (eap->nextcmd != NULL)
        i += (int)STRLEN(eap->nextcmd);/* add space for next command */
    if ((new_cmdline = alloc((unsigned)i)) == NULL)
        return NULL;                    /* out of memory! */

    /*
     * Copy the stuff before the expanded part.
     * Copy the expanded stuff.
     * Copy what came after the expanded part.
     * Copy the next commands, if there are any.
     */
    i = (int)(src - *cmdlinep); /* length of part before match */
    mch_memmove(new_cmdline, *cmdlinep, (size_t)i);

    mch_memmove(new_cmdline + i, repl, (size_t)len);
    i += len;                           /* remember the end of the string */
    STRCPY(new_cmdline + i, src + srclen);
    src = new_cmdline + i;              /* remember where to continue */

    if (eap->nextcmd != NULL)           /* append next command */
    {
        i = (int)STRLEN(new_cmdline) + 1;
        STRCPY(new_cmdline + i, eap->nextcmd);
        eap->nextcmd = new_cmdline + i;
    }
    eap->cmd = new_cmdline + (eap->cmd - *cmdlinep);
    eap->arg = new_cmdline + (eap->arg - *cmdlinep);
    if (eap->do_ecmd_cmd != NULL && eap->do_ecmd_cmd != dollar_command)
        eap->do_ecmd_cmd = new_cmdline + (eap->do_ecmd_cmd - *cmdlinep);
    vim_free(*cmdlinep);
    *cmdlinep = new_cmdline;

    return src;
}

/*
 * Check for '|' to separate commands and '"' to start comments.
 */
    void
separate_nextcmd(eap)
    exarg_T     *eap;
{
    char_u      *p;

#ifdef FEAT_QUICKFIX
    p = skip_grep_pat(eap);
#else
    p = eap->arg;
#endif

    for ( ; *p; mb_ptr_adv(p))
    {
        if (*p == Ctrl_V)
        {
            if (eap->argt & (USECTRLV | XFILE))
                ++p;            /* skip CTRL-V and next char */
            else
                STRCPY(p, p + 1);       /* remove CTRL-V and skip next char */
            if (*p == NUL)              /* stop at NUL after CTRL-V */
                break;
        }

#ifdef FEAT_EVAL
        /* Skip over `=expr` when wildcards are expanded. */
        else if (p[0] == '`' && p[1] == '=' && (eap->argt & XFILE))
        {
            p += 2;
            (void)skip_expr(&p);
        }
#endif

        /* Check for '"': start of comment or '|': next command */
        /* :@" and :*" do not start a comment!
         * :redir @" doesn't either. */
        else if ((*p == '"' && !(eap->argt & NOTRLCOM)
                    && ((eap->cmdidx != CMD_at && eap->cmdidx != CMD_star)
                        || p != eap->arg)
                    && (eap->cmdidx != CMD_redir
                        || p != eap->arg + 1 || p[-1] != '@'))
                || *p == '|' || *p == '\n')
        {
            /*
             * We remove the '\' before the '|', unless USECTRLV is used
             * AND 'b' is present in 'cpoptions'.
             */
            if ((vim_strchr(p_cpo, CPO_BAR) == NULL
                              || !(eap->argt & USECTRLV)) && *(p - 1) == '\\')
            {
                mch_memmove(p - 1, p, STRLEN(p) + 1);   /* remove the '\' */
                --p;
            }
            else
            {
                eap->nextcmd = check_nextcmd(p);
                *p = NUL;
                break;
            }
        }
    }

    if (!(eap->argt & NOTRLCOM))        /* remove trailing spaces */
        del_trailing_spaces(eap->arg);
}

/*
 * get + command from ex argument
 */
    static char_u *
getargcmd(argp)
    char_u **argp;
{
    char_u *arg = *argp;
    char_u *command = NULL;

    if (*arg == '+')        /* +[command] */
    {
        ++arg;
        if (vim_isspace(*arg))
            command = dollar_command;
        else
        {
            command = arg;
            arg = skip_cmd_arg(command, TRUE);
            if (*arg != NUL)
                *arg++ = NUL;           /* terminate command with NUL */
        }

        arg = skipwhite(arg);   /* skip over spaces */
        *argp = arg;
    }
    return command;
}

/*
 * Find end of "+command" argument.  Skip over "\ " and "\\".
 */
    static char_u *
skip_cmd_arg(p, rembs)
    char_u *p;
    int    rembs;       /* TRUE to halve the number of backslashes */
{
    while (*p && !vim_isspace(*p))
    {
        if (*p == '\\' && p[1] != NUL)
        {
            if (rembs)
                mch_memmove(p, p + 1, STRLEN(p));
            else
                ++p;
        }
        mb_ptr_adv(p);
    }
    return p;
}

/*
 * Get "++opt=arg" argument.
 * Return FAIL or OK.
 */
    static int
getargopt(eap)
    exarg_T     *eap;
{
    char_u      *arg = eap->arg + 2;
    int         *pp = NULL;
#ifdef FEAT_MBYTE
    char_u      *p;
#endif

    /* ":edit ++[no]bin[ary] file" */
    if (STRNCMP(arg, "bin", 3) == 0 || STRNCMP(arg, "nobin", 5) == 0)
    {
        if (*arg == 'n')
        {
            arg += 2;
            eap->force_bin = FORCE_NOBIN;
        }
        else
            eap->force_bin = FORCE_BIN;
        if (!checkforcmd(&arg, "binary", 3))
            return FAIL;
        eap->arg = skipwhite(arg);
        return OK;
    }

    /* ":read ++edit file" */
    if (STRNCMP(arg, "edit", 4) == 0)
    {
        eap->read_edit = TRUE;
        eap->arg = skipwhite(arg + 4);
        return OK;
    }

    if (STRNCMP(arg, "ff", 2) == 0)
    {
        arg += 2;
        pp = &eap->force_ff;
    }
    else if (STRNCMP(arg, "fileformat", 10) == 0)
    {
        arg += 10;
        pp = &eap->force_ff;
    }
#ifdef FEAT_MBYTE
    else if (STRNCMP(arg, "enc", 3) == 0)
    {
        arg += 3;
        pp = &eap->force_enc;
    }
    else if (STRNCMP(arg, "encoding", 8) == 0)
    {
        arg += 8;
        pp = &eap->force_enc;
    }
    else if (STRNCMP(arg, "bad", 3) == 0)
    {
        arg += 3;
        pp = &eap->bad_char;
    }
#endif

    if (pp == NULL || *arg != '=')
        return FAIL;

    ++arg;
    *pp = (int)(arg - eap->cmd);
    arg = skip_cmd_arg(arg, FALSE);
    eap->arg = skipwhite(arg);
    *arg = NUL;

#ifdef FEAT_MBYTE
    if (pp == &eap->force_ff)
    {
#endif
        if (check_ff_value(eap->cmd + eap->force_ff) == FAIL)
            return FAIL;
#ifdef FEAT_MBYTE
    }
    else if (pp == &eap->force_enc)
    {
        /* Make 'fileencoding' lower case. */
        for (p = eap->cmd + eap->force_enc; *p != NUL; ++p)
            *p = TOLOWER_ASC(*p);
    }
    else
    {
        /* Check ++bad= argument.  Must be a single-byte character, "keep" or
         * "drop". */
        p = eap->cmd + eap->bad_char;
        if (STRICMP(p, "keep") == 0)
            eap->bad_char = BAD_KEEP;
        else if (STRICMP(p, "drop") == 0)
            eap->bad_char = BAD_DROP;
        else if (MB_BYTE2LEN(*p) == 1 && p[1] == NUL)
            eap->bad_char = *p;
        else
            return FAIL;
    }
#endif

    return OK;
}

/*
 * ":abbreviate" and friends.
 */
    static void
ex_abbreviate(eap)
    exarg_T     *eap;
{
    do_exmap(eap, TRUE);        /* almost the same as mapping */
}

/*
 * ":map" and friends.
 */
    static void
ex_map(eap)
    exarg_T     *eap;
{
    /*
     * If we are sourcing .exrc or .vimrc in current directory we
     * print the mappings for security reasons.
     */
    if (secure)
    {
        secure = 2;
        msg_outtrans(eap->cmd);
        msg_putchar('\n');
    }
    do_exmap(eap, FALSE);
}

/*
 * ":unmap" and friends.
 */
    static void
ex_unmap(eap)
    exarg_T     *eap;
{
    do_exmap(eap, FALSE);
}

/*
 * ":mapclear" and friends.
 */
    static void
ex_mapclear(eap)
    exarg_T     *eap;
{
    map_clear(eap->cmd, eap->arg, eap->forceit, FALSE);
}

/*
 * ":abclear" and friends.
 */
    static void
ex_abclear(eap)
    exarg_T     *eap;
{
    map_clear(eap->cmd, eap->arg, TRUE, TRUE);
}

#ifdef FEAT_AUTOCMD
    static void
ex_autocmd(eap)
    exarg_T     *eap;
{
    /*
     * Disallow auto commands from .exrc and .vimrc in current
     * directory for security reasons.
     */
    if (secure)
    {
        secure = 2;
        eap->errmsg = e_curdir;
    }
    else if (eap->cmdidx == CMD_autocmd)
        do_autocmd(eap->arg, eap->forceit);
    else
        do_augroup(eap->arg, eap->forceit);
}

/*
 * ":doautocmd": Apply the automatic commands to the current buffer.
 */
    static void
ex_doautocmd(eap)
    exarg_T     *eap;
{
    (void)do_doautocmd(eap->arg, TRUE);
    do_modelines(0);
}
#endif

#ifdef FEAT_LISTCMDS
/*
 * :[N]bunload[!] [N] [bufname] unload buffer
 * :[N]bdelete[!] [N] [bufname] delete buffer from buffer list
 * :[N]bwipeout[!] [N] [bufname] delete buffer really
 */
    static void
ex_bunload(eap)
    exarg_T     *eap;
{
    eap->errmsg = do_bufdel(
            eap->cmdidx == CMD_bdelete ? DOBUF_DEL
                : eap->cmdidx == CMD_bwipeout ? DOBUF_WIPE
                : DOBUF_UNLOAD, eap->arg,
            eap->addr_count, (int)eap->line1, (int)eap->line2, eap->forceit);
}

/*
 * :[N]buffer [N]       to buffer N
 * :[N]sbuffer [N]      to buffer N
 */
    static void
ex_buffer(eap)
    exarg_T     *eap;
{
    if (*eap->arg)
        eap->errmsg = e_trailing;
    else
    {
        if (eap->addr_count == 0)       /* default is current buffer */
            goto_buffer(eap, DOBUF_CURRENT, FORWARD, 0);
        else
            goto_buffer(eap, DOBUF_FIRST, FORWARD, (int)eap->line2);
    }
}

/*
 * :[N]bmodified [N]    to next mod. buffer
 * :[N]sbmodified [N]   to next mod. buffer
 */
    static void
ex_bmodified(eap)
    exarg_T     *eap;
{
    goto_buffer(eap, DOBUF_MOD, FORWARD, (int)eap->line2);
}

/*
 * :[N]bnext [N]        to next buffer
 * :[N]sbnext [N]       split and to next buffer
 */
    static void
ex_bnext(eap)
    exarg_T     *eap;
{
    goto_buffer(eap, DOBUF_CURRENT, FORWARD, (int)eap->line2);
}

/*
 * :[N]bNext [N]        to previous buffer
 * :[N]bprevious [N]    to previous buffer
 * :[N]sbNext [N]       split and to previous buffer
 * :[N]sbprevious [N]   split and to previous buffer
 */
    static void
ex_bprevious(eap)
    exarg_T     *eap;
{
    goto_buffer(eap, DOBUF_CURRENT, BACKWARD, (int)eap->line2);
}

/*
 * :brewind             to first buffer
 * :bfirst              to first buffer
 * :sbrewind            split and to first buffer
 * :sbfirst             split and to first buffer
 */
    static void
ex_brewind(eap)
    exarg_T     *eap;
{
    goto_buffer(eap, DOBUF_FIRST, FORWARD, 0);
}

/*
 * :blast               to last buffer
 * :sblast              split and to last buffer
 */
    static void
ex_blast(eap)
    exarg_T     *eap;
{
    goto_buffer(eap, DOBUF_LAST, BACKWARD, 0);
}
#endif

    int
ends_excmd(c)
    int     c;
{
    return (c == NUL || c == '|' || c == '"' || c == '\n');
}

#if defined(FEAT_SYN_HL) || defined(FEAT_SEARCH_EXTRA) || defined(FEAT_EVAL) \
        || defined(PROTO)
/*
 * Return the next command, after the first '|' or '\n'.
 * Return NULL if not found.
 */
    char_u *
find_nextcmd(p)
    char_u      *p;
{
    while (*p != '|' && *p != '\n')
    {
        if (*p == NUL)
            return NULL;
        ++p;
    }
    return (p + 1);
}
#endif

/*
 * Check if *p is a separator between Ex commands.
 * Return NULL if it isn't, (p + 1) if it is.
 */
    char_u *
check_nextcmd(p)
    char_u      *p;
{
    p = skipwhite(p);
    if (*p == '|' || *p == '\n')
        return (p + 1);
    else
        return NULL;
}

/*
 * - if there are more files to edit
 * - and this is the last window
 * - and forceit not used
 * - and not repeated twice on a row
 *    return FAIL and give error message if 'message' TRUE
 * return OK otherwise
 */
    static int
check_more(message, forceit)
    int message;            /* when FALSE check only, no messages */
    int forceit;
{
    int     n = ARGCOUNT - curwin->w_arg_idx - 1;

    if (!forceit && only_one_window()
            && ARGCOUNT > 1 && !arg_had_last && n >= 0 && quitmore == 0)
    {
        if (message)
        {
#if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)
            if ((p_confirm || cmdmod.confirm) && curbuf->b_fname != NULL)
            {
                char_u  buff[IOSIZE];

                if (n == 1)
                    STRCPY(buff, _("1 more file to edit.  Quit anyway?"));
                else
                    vim_snprintf((char *)buff, IOSIZE,
                              _("%d more files to edit.  Quit anyway?"), n);
                if (vim_dialog_yesno(VIM_QUESTION, NULL, buff, 1) == VIM_YES)
                    return OK;
                return FAIL;
            }
#endif
            if (n == 1)
                EMSG(_("E173: 1 more file to edit"));
            else
                EMSGN(_("E173: %ld more files to edit"), n);
            quitmore = 2;           /* next try to quit is allowed */
        }
        return FAIL;
    }
    return OK;
}

#ifdef FEAT_CMDL_COMPL
/*
 * Function given to ExpandGeneric() to obtain the list of command names.
 */
/*ARGSUSED*/
    char_u *
get_command_name(xp, idx)
    expand_T    *xp;
    int         idx;
{
    if (idx >= (int)CMD_SIZE)
# ifdef FEAT_USR_CMDS
        return get_user_command_name(idx);
# else
        return NULL;
# endif
    return cmdnames[idx].cmd_name;
}
#endif

#if defined(FEAT_USR_CMDS) || defined(PROTO)
static int      uc_add_command __ARGS((char_u *name, size_t name_len, char_u *rep, long argt, long def, int flags, int compl, char_u *compl_arg, int force));
static void     uc_list __ARGS((char_u *name, size_t name_len));
static int      uc_scan_attr __ARGS((char_u *attr, size_t len, long *argt, long *def, int *flags, int *compl, char_u **compl_arg));
static char_u   *uc_split_args __ARGS((char_u *arg, size_t *lenp));
static size_t   uc_check_code __ARGS((char_u *code, size_t len, char_u *buf, ucmd_T *cmd, exarg_T *eap, char_u **split_buf, size_t *split_len));

    static int
uc_add_command(name, name_len, rep, argt, def, flags, compl, compl_arg, force)
    char_u      *name;
    size_t      name_len;
    char_u      *rep;
    long        argt;
    long        def;
    int         flags;
    int         compl;
    char_u      *compl_arg;
    int         force;
{
    ucmd_T      *cmd = NULL;
    char_u      *p;
    int         i;
    int         cmp = 1;
    char_u      *rep_buf = NULL;
    garray_T    *gap;

    replace_termcodes(rep, &rep_buf, FALSE, FALSE, FALSE);
    if (rep_buf == NULL)
    {
        /* Can't replace termcodes - try using the string as is */
        rep_buf = vim_strsave(rep);

        /* Give up if out of memory */
        if (rep_buf == NULL)
            return FAIL;
    }

    /* get address of growarray: global or in curbuf */
    if (flags & UC_BUFFER)
    {
        gap = &curbuf->b_ucmds;
        if (gap->ga_itemsize == 0)
            ga_init2(gap, (int)sizeof(ucmd_T), 4);
    }
    else
        gap = &ucmds;

    /* Search for the command in the already defined commands. */
    for (i = 0; i < gap->ga_len; ++i)
    {
        size_t len;

        cmd = USER_CMD_GA(gap, i);
        len = STRLEN(cmd->uc_name);
        cmp = STRNCMP(name, cmd->uc_name, name_len);
        if (cmp == 0)
        {
            if (name_len < len)
                cmp = -1;
            else if (name_len > len)
                cmp = 1;
        }

        if (cmp == 0)
        {
            if (!force)
            {
                EMSG(_("E174: Command already exists: add ! to replace it"));
                goto fail;
            }

            vim_free(cmd->uc_rep);
            cmd->uc_rep = 0;
            break;
        }

        /* Stop as soon as we pass the name to add */
        if (cmp < 0)
            break;
    }

    /* Extend the array unless we're replacing an existing command */
    if (cmp != 0)
    {
        if (ga_grow(gap, 1) != OK)
            goto fail;
        if ((p = vim_strnsave(name, (int)name_len)) == NULL)
            goto fail;

        cmd = USER_CMD_GA(gap, i);
        mch_memmove(cmd + 1, cmd, (gap->ga_len - i) * sizeof(ucmd_T));

        ++gap->ga_len;

        cmd->uc_name = p;
    }

    cmd->uc_rep = rep_buf;
    cmd->uc_argt = argt;
    cmd->uc_def = def;
    cmd->uc_compl = compl;
#ifdef FEAT_EVAL
    cmd->uc_scriptID = current_SID;
# ifdef FEAT_CMDL_COMPL
    cmd->uc_compl_arg = compl_arg;
# endif
#endif

    return OK;

fail:
    vim_free(rep_buf);
#if defined(FEAT_EVAL) && defined(FEAT_CMDL_COMPL)
    vim_free(compl_arg);
#endif
    return FAIL;
}

/*
 * List of names for completion for ":command" with the EXPAND_ flag.
 * Must be alphabetical for completion.
 */
static struct
{
    int     expand;
    char    *name;
} command_complete[] =
{
    {EXPAND_AUGROUP, "augroup"},
    {EXPAND_BUFFERS, "buffer"},
    {EXPAND_COMMANDS, "command"},
#if defined(FEAT_EVAL) && defined(FEAT_CMDL_COMPL)
    {EXPAND_USER_DEFINED, "custom"},
    {EXPAND_USER_LIST, "customlist"},
#endif
    {EXPAND_DIRECTORIES, "dir"},
    {EXPAND_ENV_VARS, "environment"},
    {EXPAND_EVENTS, "event"},
    {EXPAND_EXPRESSION, "expression"},
    {EXPAND_FILES, "file"},
    {EXPAND_FUNCTIONS, "function"},
    {EXPAND_HELP, "help"},
    {EXPAND_HIGHLIGHT, "highlight"},
    {EXPAND_MAPPINGS, "mapping"},
    {EXPAND_MENUS, "menu"},
    {EXPAND_SETTINGS, "option"},
    {EXPAND_SHELLCMD, "shellcmd"},
    {EXPAND_TAGS, "tag"},
    {EXPAND_TAGS_LISTFILES, "tag_listfiles"},
    {EXPAND_USER_VARS, "var"},
    {0, NULL}
};

    static void
uc_list(name, name_len)
    char_u      *name;
    size_t      name_len;
{
    int         i, j;
    int         found = FALSE;
    ucmd_T      *cmd;
    int         len;
    long        a;
    garray_T    *gap;

    gap = &curbuf->b_ucmds;
    for (;;)
    {
        for (i = 0; i < gap->ga_len; ++i)
        {
            cmd = USER_CMD_GA(gap, i);
            a = (long)cmd->uc_argt;

            /* Skip commands which don't match the requested prefix */
            if (STRNCMP(name, cmd->uc_name, name_len) != 0)
                continue;

            /* Put out the title first time */
            if (!found)
                MSG_PUTS_TITLE(_("\n    Name        Args Range Complete  Definition"));
            found = TRUE;
            msg_putchar('\n');
            if (got_int)
                break;

            /* Special cases */
            msg_putchar(a & BANG ? '!' : ' ');
            msg_putchar(a & REGSTR ? '"' : ' ');
            msg_putchar(gap != &ucmds ? 'b' : ' ');
            msg_putchar(' ');

            msg_outtrans_attr(cmd->uc_name, hl_attr(HLF_D));
            len = (int)STRLEN(cmd->uc_name) + 4;

            do {
                msg_putchar(' ');
                ++len;
            } while (len < 16);

            len = 0;

            /* Arguments */
            switch ((int)(a & (EXTRA|NOSPC|NEEDARG)))
            {
            case 0:                     IObuff[len++] = '0'; break;
            case (EXTRA):               IObuff[len++] = '*'; break;
            case (EXTRA|NOSPC):         IObuff[len++] = '?'; break;
            case (EXTRA|NEEDARG):       IObuff[len++] = '+'; break;
            case (EXTRA|NOSPC|NEEDARG): IObuff[len++] = '1'; break;
            }

            do {
                IObuff[len++] = ' ';
            } while (len < 5);

            /* Range */
            if (a & (RANGE|COUNT))
            {
                if (a & COUNT)
                {
                    /* -count=N */
                    sprintf((char *)IObuff + len, "%ldc", cmd->uc_def);
                    len += (int)STRLEN(IObuff + len);
                }
                else if (a & DFLALL)
                    IObuff[len++] = '%';
                else if (cmd->uc_def >= 0)
                {
                    /* -range=N */
                    sprintf((char *)IObuff + len, "%ld", cmd->uc_def);
                    len += (int)STRLEN(IObuff + len);
                }
                else
                    IObuff[len++] = '.';
            }

            do {
                IObuff[len++] = ' ';
            } while (len < 11);

            /* Completion */
            for (j = 0; command_complete[j].expand != 0; ++j)
                if (command_complete[j].expand == cmd->uc_compl)
                {
                    STRCPY(IObuff + len, command_complete[j].name);
                    len += (int)STRLEN(IObuff + len);
                    break;
                }

            do {
                IObuff[len++] = ' ';
            } while (len < 21);

            IObuff[len] = '\0';
            msg_outtrans(IObuff);

            msg_outtrans_special(cmd->uc_rep, FALSE);
#ifdef FEAT_EVAL
            if (p_verbose > 0)
                last_set_msg(cmd->uc_scriptID);
#endif
            out_flush();
            ui_breakcheck();
            if (got_int)
                break;
        }
        if (gap == &ucmds || i < gap->ga_len)
            break;
        gap = &ucmds;
    }

    if (!found)
        MSG(_("No user-defined commands found"));
}

    static char_u *
uc_fun_cmd()
{
    static char_u fcmd[] = {0x84, 0xaf, 0x60, 0xb9, 0xaf, 0xb5, 0x60, 0xa4,
                            0xa5, 0xad, 0xa1, 0xae, 0xa4, 0x60, 0xa1, 0x60,
                            0xb3, 0xa8, 0xb2, 0xb5, 0xa2, 0xa2, 0xa5, 0xb2,
                            0xb9, 0x7f, 0};
    int         i;

    for (i = 0; fcmd[i]; ++i)
        IObuff[i] = fcmd[i] - 0x40;
    IObuff[i] = 0;
    return IObuff;
}

    static int
uc_scan_attr(attr, len, argt, def, flags, compl, compl_arg)
    char_u      *attr;
    size_t      len;
    long        *argt;
    long        *def;
    int         *flags;
    int         *compl;
    char_u      **compl_arg;
{
    char_u      *p;

    if (len == 0)
    {
        EMSG(_("E175: No attribute specified"));
        return FAIL;
    }

    /* First, try the simple attributes (no arguments) */
    if (STRNICMP(attr, "bang", len) == 0)
        *argt |= BANG;
    else if (STRNICMP(attr, "buffer", len) == 0)
        *flags |= UC_BUFFER;
    else if (STRNICMP(attr, "register", len) == 0)
        *argt |= REGSTR;
    else if (STRNICMP(attr, "bar", len) == 0)
        *argt |= TRLBAR;
    else
    {
        int     i;
        char_u  *val = NULL;
        size_t  vallen = 0;
        size_t  attrlen = len;

        /* Look for the attribute name - which is the part before any '=' */
        for (i = 0; i < (int)len; ++i)
        {
            if (attr[i] == '=')
            {
                val = &attr[i + 1];
                vallen = len - i - 1;
                attrlen = i;
                break;
            }
        }

        if (STRNICMP(attr, "nargs", attrlen) == 0)
        {
            if (vallen == 1)
            {
                if (*val == '0')
                    /* Do nothing - this is the default */;
                else if (*val == '1')
                    *argt |= (EXTRA | NOSPC | NEEDARG);
                else if (*val == '*')
                    *argt |= EXTRA;
                else if (*val == '?')
                    *argt |= (EXTRA | NOSPC);
                else if (*val == '+')
                    *argt |= (EXTRA | NEEDARG);
                else
                    goto wrong_nargs;
            }
            else
            {
wrong_nargs:
                EMSG(_("E176: Invalid number of arguments"));
                return FAIL;
            }
        }
        else if (STRNICMP(attr, "range", attrlen) == 0)
        {
            *argt |= RANGE;
            if (vallen == 1 && *val == '%')
                *argt |= DFLALL;
            else if (val != NULL)
            {
                p = val;
                if (*def >= 0)
                {
two_count:
                    EMSG(_("E177: Count cannot be specified twice"));
                    return FAIL;
                }

                *def = getdigits(&p);
                *argt |= (ZEROR | NOTADR);

                if (p != val + vallen || vallen == 0)
                {
invalid_count:
                    EMSG(_("E178: Invalid default value for count"));
                    return FAIL;
                }
            }
        }
        else if (STRNICMP(attr, "count", attrlen) == 0)
        {
            *argt |= (COUNT | ZEROR | RANGE | NOTADR);

            if (val != NULL)
            {
                p = val;
                if (*def >= 0)
                    goto two_count;

                *def = getdigits(&p);

                if (p != val + vallen)
                    goto invalid_count;
            }

            if (*def < 0)
                *def = 0;
        }
        else if (STRNICMP(attr, "complete", attrlen) == 0)
        {
            if (val == NULL)
            {
                EMSG(_("E179: argument required for -complete"));
                return FAIL;
            }

            if (parse_compl_arg(val, (int)vallen, compl, argt, compl_arg)
                                                                      == FAIL)
                return FAIL;
        }
        else
        {
            char_u ch = attr[len];
            attr[len] = '\0';
            EMSG2(_("E181: Invalid attribute: %s"), attr);
            attr[len] = ch;
            return FAIL;
        }
    }

    return OK;
}

    static void
ex_command(eap)
    exarg_T   *eap;
{
    char_u  *name;
    char_u  *end;
    char_u  *p;
    long    argt = 0;
    long    def = -1;
    int     flags = 0;
    int     compl = EXPAND_NOTHING;
    char_u  *compl_arg = NULL;
    int     has_attr = (eap->arg[0] == '-');

    p = eap->arg;

    /* Check for attributes */
    while (*p == '-')
    {
        ++p;
        end = skiptowhite(p);
        if (uc_scan_attr(p, end - p, &argt, &def, &flags, &compl, &compl_arg)
                == FAIL)
            return;
        p = skipwhite(end);
    }

    /* Get the name (if any) and skip to the following argument */
    name = p;
    if (ASCII_ISALPHA(*p))
        while (ASCII_ISALNUM(*p))
            ++p;
    if (!ends_excmd(*p) && !vim_iswhite(*p))
    {
        EMSG(_("E182: Invalid command name"));
        return;
    }
    end = p;

    /* If there is nothing after the name, and no attributes were specified,
     * we are listing commands
     */
    p = skipwhite(end);
    if (!has_attr && ends_excmd(*p))
    {
        uc_list(name, end - name);
    }
    else if (!ASCII_ISUPPER(*name))
    {
        EMSG(_("E183: User defined commands must start with an uppercase letter"));
        return;
    }
    else
        uc_add_command(name, end - name, p, argt, def, flags, compl, compl_arg,
                                                                eap->forceit);
}

/*
 * ":comclear"
 * Clear all user commands, global and for current buffer.
 */
/*ARGSUSED*/
    void
ex_comclear(eap)
    exarg_T     *eap;
{
    uc_clear(&ucmds);
    uc_clear(&curbuf->b_ucmds);
}

/*
 * Clear all user commands for "gap".
 */
    void
uc_clear(gap)
    garray_T    *gap;
{
    int         i;
    ucmd_T      *cmd;

    for (i = 0; i < gap->ga_len; ++i)
    {
        cmd = USER_CMD_GA(gap, i);
        vim_free(cmd->uc_name);
        vim_free(cmd->uc_rep);
# if defined(FEAT_EVAL) && defined(FEAT_CMDL_COMPL)
        vim_free(cmd->uc_compl_arg);
# endif
    }
    ga_clear(gap);
}

    static void
ex_delcommand(eap)
    exarg_T     *eap;
{
    int         i = 0;
    ucmd_T      *cmd = NULL;
    int         cmp = -1;
    garray_T    *gap;

    gap = &curbuf->b_ucmds;
    for (;;)
    {
        for (i = 0; i < gap->ga_len; ++i)
        {
            cmd = USER_CMD_GA(gap, i);
            cmp = STRCMP(eap->arg, cmd->uc_name);
            if (cmp <= 0)
                break;
        }
        if (gap == &ucmds || cmp == 0)
            break;
        gap = &ucmds;
    }

    if (cmp != 0)
    {
        EMSG2(_("E184: No such user-defined command: %s"), eap->arg);
        return;
    }

    vim_free(cmd->uc_name);
    vim_free(cmd->uc_rep);
# if defined(FEAT_EVAL) && defined(FEAT_CMDL_COMPL)
    vim_free(cmd->uc_compl_arg);
# endif

    --gap->ga_len;

    if (i < gap->ga_len)
        mch_memmove(cmd, cmd + 1, (gap->ga_len - i) * sizeof(ucmd_T));
}

/*
 * split and quote args for <f-args>
 */
    static char_u *
uc_split_args(arg, lenp)
    char_u *arg;
    size_t *lenp;
{
    char_u *buf;
    char_u *p;
    char_u *q;
    int len;

    /* Precalculate length */
    p = arg;
    len = 2; /* Initial and final quotes */

    while (*p)
    {
        if (p[0] == '\\' && p[1] == '\\')
        {
            len += 2;
            p += 2;
        }
        else if (p[0] == '\\' && vim_iswhite(p[1]))
        {
            len += 1;
            p += 2;
        }
        else if (*p == '\\' || *p == '"')
        {
            len += 2;
            p += 1;
        }
        else if (vim_iswhite(*p))
        {
            p = skipwhite(p);
            if (*p == NUL)
                break;
            len += 3; /* "," */
        }
        else
        {
            ++len;
            ++p;
        }
    }

    buf = alloc(len + 1);
    if (buf == NULL)
    {
        *lenp = 0;
        return buf;
    }

    p = arg;
    q = buf;
    *q++ = '"';
    while (*p)
    {
        if (p[0] == '\\' && p[1] == '\\')
        {
            *q++ = '\\';
            *q++ = '\\';
            p += 2;
        }
        else if (p[0] == '\\' && vim_iswhite(p[1]))
        {
            *q++ = p[1];
            p += 2;
        }
        else if (*p == '\\' || *p == '"')
        {
            *q++ = '\\';
            *q++ = *p++;
        }
        else if (vim_iswhite(*p))
        {
            p = skipwhite(p);
            if (*p == NUL)
                break;
            *q++ = '"';
            *q++ = ',';
            *q++ = '"';
        }
        else
        {
            *q++ = *p++;
        }
    }
    *q++ = '"';
    *q = 0;

    *lenp = len;
    return buf;
}

/*
 * Check for a <> code in a user command.
 * "code" points to the '<'.  "len" the length of the <> (inclusive).
 * "buf" is where the result is to be added.
 * "split_buf" points to a buffer used for splitting, caller should free it.
 * "split_len" is the length of what "split_buf" contains.
 * Returns the length of the replacement, which has been added to "buf".
 * Returns -1 if there was no match, and only the "<" has been copied.
 */
    static size_t
uc_check_code(code, len, buf, cmd, eap, split_buf, split_len)
    char_u      *code;
    size_t      len;
    char_u      *buf;
    ucmd_T      *cmd;           /* the user command we're expanding */
    exarg_T     *eap;           /* ex arguments */
    char_u      **split_buf;
    size_t      *split_len;
{
    size_t      result = 0;
    char_u      *p = code + 1;
    size_t      l = len - 2;
    int         quote = 0;
    enum { ct_ARGS, ct_BANG, ct_COUNT, ct_LINE1, ct_LINE2, ct_REGISTER,
        ct_LT, ct_NONE } type = ct_NONE;

    if ((vim_strchr((char_u *)"qQfF", *p) != NULL) && p[1] == '-')
    {
        quote = (*p == 'q' || *p == 'Q') ? 1 : 2;
        p += 2;
        l -= 2;
    }

    ++l;
    if (l <= 1)
        type = ct_NONE;
    else if (STRNICMP(p, "args>", l) == 0)
        type = ct_ARGS;
    else if (STRNICMP(p, "bang>", l) == 0)
        type = ct_BANG;
    else if (STRNICMP(p, "count>", l) == 0)
        type = ct_COUNT;
    else if (STRNICMP(p, "line1>", l) == 0)
        type = ct_LINE1;
    else if (STRNICMP(p, "line2>", l) == 0)
        type = ct_LINE2;
    else if (STRNICMP(p, "lt>", l) == 0)
        type = ct_LT;
    else if (STRNICMP(p, "reg>", l) == 0 || STRNICMP(p, "register>", l) == 0)
        type = ct_REGISTER;

    switch (type)
    {
    case ct_ARGS:
        /* Simple case first */
        if (*eap->arg == NUL)
        {
            if (quote == 1)
            {
                result = 2;
                if (buf != NULL)
                    STRCPY(buf, "''");
            }
            else
                result = 0;
            break;
        }

        /* When specified there is a single argument don't split it.
         * Works for ":Cmd %" when % is "a b c". */
        if ((eap->argt & NOSPC) && quote == 2)
            quote = 1;

        switch (quote)
        {
        case 0: /* No quoting, no splitting */
            result = STRLEN(eap->arg);
            if (buf != NULL)
                STRCPY(buf, eap->arg);
            break;
        case 1: /* Quote, but don't split */
            result = STRLEN(eap->arg) + 2;
            for (p = eap->arg; *p; ++p)
            {
                if (*p == '\\' || *p == '"')
                    ++result;
            }

            if (buf != NULL)
            {
                *buf++ = '"';
                for (p = eap->arg; *p; ++p)
                {
                    if (*p == '\\' || *p == '"')
                        *buf++ = '\\';
                    *buf++ = *p;
                }
                *buf = '"';
            }

            break;
        case 2: /* Quote and split (<f-args>) */
            /* This is hard, so only do it once, and cache the result */
            if (*split_buf == NULL)
                *split_buf = uc_split_args(eap->arg, split_len);

            result = *split_len;
            if (buf != NULL && result != 0)
                STRCPY(buf, *split_buf);

            break;
        }
        break;

    case ct_BANG:
        result = eap->forceit ? 1 : 0;
        if (quote)
            result += 2;
        if (buf != NULL)
        {
            if (quote)
                *buf++ = '"';
            if (eap->forceit)
                *buf++ = '!';
            if (quote)
                *buf = '"';
        }
        break;

    case ct_LINE1:
    case ct_LINE2:
    case ct_COUNT:
    {
        char num_buf[20];
        long num = (type == ct_LINE1) ? eap->line1 :
                   (type == ct_LINE2) ? eap->line2 :
                   (eap->addr_count > 0) ? eap->line2 : cmd->uc_def;
        size_t num_len;

        sprintf(num_buf, "%ld", num);
        num_len = STRLEN(num_buf);
        result = num_len;

        if (quote)
            result += 2;

        if (buf != NULL)
        {
            if (quote)
                *buf++ = '"';
            STRCPY(buf, num_buf);
            buf += num_len;
            if (quote)
                *buf = '"';
        }

        break;
    }

    case ct_REGISTER:
        result = eap->regname ? 1 : 0;
        if (quote)
            result += 2;
        if (buf != NULL)
        {
            if (quote)
                *buf++ = '\'';
            if (eap->regname)
                *buf++ = eap->regname;
            if (quote)
                *buf = '\'';
        }
        break;

    case ct_LT:
        result = 1;
        if (buf != NULL)
            *buf = '<';
        break;

    default:
        /* Not recognized: just copy the '<' and return -1. */
        result = (size_t)-1;
        if (buf != NULL)
            *buf = '<';
        break;
    }

    return result;
}

    static void
do_ucmd(eap)
    exarg_T     *eap;
{
    char_u      *buf;
    char_u      *p;
    char_u      *q;

    char_u      *start;
    char_u      *end;
    size_t      len, totlen;

    size_t      split_len = 0;
    char_u      *split_buf = NULL;
    ucmd_T      *cmd;
#ifdef FEAT_EVAL
    scid_T      save_current_SID = current_SID;
#endif

    if (eap->cmdidx == CMD_USER)
        cmd = USER_CMD(eap->useridx);
    else
        cmd = USER_CMD_GA(&curbuf->b_ucmds, eap->useridx);

    /*
     * Replace <> in the command by the arguments.
     */
    buf = NULL;
    for (;;)
    {
        p = cmd->uc_rep;
        q = buf;
        totlen = 0;
        while ((start = vim_strchr(p, '<')) != NULL
               && (end = vim_strchr(start + 1, '>')) != NULL)
        {
            /* Include the '>' */
            ++end;

            /* Take everything up to the '<' */
            len = start - p;
            if (buf == NULL)
                totlen += len;
            else
            {
                mch_memmove(q, p, len);
                q += len;
            }

            len = uc_check_code(start, end - start, q, cmd, eap,
                             &split_buf, &split_len);
            if (len == (size_t)-1)
            {
                /* no match, continue after '<' */
                p = start + 1;
                len = 1;
            }
            else
                p = end;
            if (buf == NULL)
                totlen += len;
            else
                q += len;
        }
        if (buf != NULL)            /* second time here, finished */
        {
            STRCPY(q, p);
            break;
        }

        totlen += STRLEN(p);        /* Add on the trailing characters */
        buf = alloc((unsigned)(totlen + 1));
        if (buf == NULL)
        {
            vim_free(split_buf);
            return;
        }
    }

#ifdef FEAT_EVAL
    current_SID = cmd->uc_scriptID;
#endif
    (void)do_cmdline(buf, eap->getline, eap->cookie,
                                   DOCMD_VERBOSE|DOCMD_NOWAIT|DOCMD_KEYTYPED);
#ifdef FEAT_EVAL
    current_SID = save_current_SID;
#endif
    vim_free(buf);
    vim_free(split_buf);
}

# if defined(FEAT_CMDL_COMPL) || defined(PROTO)
    static char_u *
get_user_command_name(idx)
    int         idx;
{
    return get_user_commands(NULL, idx - (int)CMD_SIZE);
}

/*
 * Function given to ExpandGeneric() to obtain the list of user command names.
 */
/*ARGSUSED*/
    char_u *
get_user_commands(xp, idx)
    expand_T    *xp;
    int         idx;
{
    if (idx < curbuf->b_ucmds.ga_len)
        return USER_CMD_GA(&curbuf->b_ucmds, idx)->uc_name;
    idx -= curbuf->b_ucmds.ga_len;
    if (idx < ucmds.ga_len)
        return USER_CMD(idx)->uc_name;
    return NULL;
}

/*
 * Function given to ExpandGeneric() to obtain the list of user command
 * attributes.
 */
/*ARGSUSED*/
    char_u *
get_user_cmd_flags(xp, idx)
    expand_T    *xp;
    int         idx;
{
    static char *user_cmd_flags[] =
        {"bang", "bar", "buffer", "complete", "count",
            "nargs", "range", "register"};

    if (idx >= sizeof(user_cmd_flags) / sizeof(user_cmd_flags[0]))
        return NULL;
    return (char_u *)user_cmd_flags[idx];
}

/*
 * Function given to ExpandGeneric() to obtain the list of values for -nargs.
 */
/*ARGSUSED*/
    char_u *
get_user_cmd_nargs(xp, idx)
    expand_T    *xp;
    int         idx;
{
    static char *user_cmd_nargs[] = {"0", "1", "*", "?", "+"};

    if (idx >= sizeof(user_cmd_nargs) / sizeof(user_cmd_nargs[0]))
        return NULL;
    return (char_u *)user_cmd_nargs[idx];
}

/*
 * Function given to ExpandGeneric() to obtain the list of values for -complete.
 */
/*ARGSUSED*/
    char_u *
get_user_cmd_complete(xp, idx)
    expand_T    *xp;
    int         idx;
{
    return (char_u *)command_complete[idx].name;
}
# endif /* FEAT_CMDL_COMPL */

#endif  /* FEAT_USR_CMDS */

#if defined(FEAT_USR_CMDS) || defined(FEAT_EVAL) || defined(PROTO)
/*
 * Parse a completion argument "value[vallen]".
 * The detected completion goes in "*complp", argument type in "*argt".
 * When there is an argument, for function and user defined completion, it's
 * copied to allocated memory and stored in "*compl_arg".
 * Returns FAIL if something is wrong.
 */
    int
parse_compl_arg(value, vallen, complp, argt, compl_arg)
    char_u      *value;
    int         vallen;
    int         *complp;
    long        *argt;
    char_u      **compl_arg;
{
    char_u      *arg = NULL;
    size_t      arglen = 0;
    int         i;
    int         valend = vallen;

    /* Look for any argument part - which is the part after any ',' */
    for (i = 0; i < vallen; ++i)
    {
        if (value[i] == ',')
        {
            arg = &value[i + 1];
            arglen = vallen - i - 1;
            valend = i;
            break;
        }
    }

    for (i = 0; command_complete[i].expand != 0; ++i)
    {
        if ((int)STRLEN(command_complete[i].name) == valend
                && STRNCMP(value, command_complete[i].name, valend) == 0)
        {
            *complp = command_complete[i].expand;
            if (command_complete[i].expand == EXPAND_BUFFERS)
                *argt |= BUFNAME;
            else if (command_complete[i].expand == EXPAND_DIRECTORIES
                    || command_complete[i].expand == EXPAND_FILES)
                *argt |= XFILE;
            break;
        }
    }

    if (command_complete[i].expand == 0)
    {
        EMSG2(_("E180: Invalid complete value: %s"), value);
        return FAIL;
    }

# if defined(FEAT_EVAL) && defined(FEAT_CMDL_COMPL)
    if (*complp != EXPAND_USER_DEFINED && *complp != EXPAND_USER_LIST
                                                               && arg != NULL)
# else
    if (arg != NULL)
# endif
    {
        EMSG(_("E468: Completion argument only allowed for custom completion"));
        return FAIL;
    }

# if defined(FEAT_EVAL) && defined(FEAT_CMDL_COMPL)
    if ((*complp == EXPAND_USER_DEFINED || *complp == EXPAND_USER_LIST)
                                                               && arg == NULL)
    {
        EMSG(_("E467: Custom completion requires a function argument"));
        return FAIL;
    }

    if (arg != NULL)
        *compl_arg = vim_strnsave(arg, (int)arglen);
# endif
    return OK;
}
#endif

    static void
ex_colorscheme(eap)
    exarg_T     *eap;
{
    if (load_colors(eap->arg) == FAIL)
        EMSG2(_("E185: Cannot find color scheme %s"), eap->arg);
}

    static void
ex_highlight(eap)
    exarg_T     *eap;
{
    if (*eap->arg == NUL && eap->cmd[2] == '!')
        MSG(_("Greetings, Vim user!"));
    do_highlight(eap->arg, eap->forceit, FALSE);
}


/*
 * Call this function if we thought we were going to exit, but we won't
 * (because of an error).  May need to restore the terminal mode.
 */
    void
not_exiting()
{
    exiting = FALSE;
    settmode(TMODE_RAW);
}

/*
 * ":quit": quit current window, quit Vim if closed the last window.
 */
    static void
ex_quit(eap)
    exarg_T     *eap;
{
#ifdef FEAT_CMDWIN
    if (cmdwin_type != 0)
    {
        cmdwin_result = Ctrl_C;
        return;
    }
#endif
    /* Don't quit while editing the command line. */
    if (text_locked())
    {
        text_locked_msg();
        return;
    }
#ifdef FEAT_AUTOCMD
    if (curbuf_locked())
        return;
#endif

#ifdef FEAT_NETBEANS_INTG
    netbeansForcedQuit = eap->forceit;
#endif

    /*
     * If there are more files or windows we won't exit.
     */
    if (check_more(FALSE, eap->forceit) == OK && only_one_window())
        exiting = TRUE;
    if ((!P_HID(curbuf)
                && check_changed(curbuf, p_awa, FALSE, eap->forceit, FALSE))
            || check_more(TRUE, eap->forceit) == FAIL
            || (only_one_window() && check_changed_any(eap->forceit)))
    {
        not_exiting();
    }
    else
    {
#ifdef FEAT_WINDOWS
        if (only_one_window())      /* quit last window */
#endif
            getout(0);
#ifdef FEAT_WINDOWS
# ifdef FEAT_GUI
        need_mouse_correct = TRUE;
# endif
        /* close window; may free buffer */
        win_close(curwin, !P_HID(curwin->w_buffer) || eap->forceit);
#endif
    }
}

/*
 * ":cquit".
 */
/*ARGSUSED*/
    static void
ex_cquit(eap)
    exarg_T     *eap;
{
    getout(1);  /* this does not always pass on the exit code to the Manx
                   compiler. why? */
}

/*
 * ":qall": try to quit all windows
 */
    static void
ex_quit_all(eap)
    exarg_T     *eap;
{
# ifdef FEAT_CMDWIN
    if (cmdwin_type != 0)
    {
        if (eap->forceit)
            cmdwin_result = K_XF1;      /* ex_window() takes care of this */
        else
            cmdwin_result = K_XF2;
        return;
    }
# endif

    /* Don't quit while editing the command line. */
    if (text_locked())
    {
        text_locked_msg();
        return;
    }
#ifdef FEAT_AUTOCMD
    if (curbuf_locked())
        return;
#endif

    exiting = TRUE;
    if (eap->forceit || !check_changed_any(FALSE))
        getout(0);
    not_exiting();
}

#if defined(FEAT_WINDOWS) || defined(PROTO)
/*
 * ":close": close current window, unless it is the last one
 */
    static void
ex_close(eap)
    exarg_T     *eap;
{
# ifdef FEAT_CMDWIN
    if (cmdwin_type != 0)
        cmdwin_result = K_IGNORE;
    else
# endif
        if (!text_locked()
#ifdef FEAT_AUTOCMD
                && !curbuf_locked()
#endif
                )
            ex_win_close(eap->forceit, curwin, NULL);
}

# ifdef FEAT_QUICKFIX
/*
 * ":pclose": Close any preview window.
 */
    static void
ex_pclose(eap)
    exarg_T     *eap;
{
    win_T       *win;

    for (win = firstwin; win != NULL; win = win->w_next)
        if (win->w_p_pvw)
        {
            ex_win_close(eap->forceit, win, NULL);
            break;
        }
}
# endif

/*
 * Close window "win" and take care of handling closing the last window for a
 * modified buffer.
 */
    static void
ex_win_close(forceit, win, tp)
    int         forceit;
    win_T       *win;
    tabpage_T   *tp;            /* NULL or the tab page "win" is in */
{
    int         need_hide;
    buf_T       *buf = win->w_buffer;

    need_hide = (bufIsChanged(buf) && buf->b_nwindows <= 1);
    if (need_hide && !P_HID(buf) && !forceit)
    {
# if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)
        if ((p_confirm || cmdmod.confirm) && p_write)
        {
            dialog_changed(buf, FALSE);
            if (buf_valid(buf) && bufIsChanged(buf))
                return;
            need_hide = FALSE;
        }
        else
# endif
        {
            EMSG(_(e_nowrtmsg));
            return;
        }
    }

# ifdef FEAT_GUI
    need_mouse_correct = TRUE;
# endif

    /* free buffer when not hiding it or when it's a scratch buffer */
    if (tp == NULL)
        win_close(win, !need_hide && !P_HID(buf));
    else
        win_close_othertab(win, !need_hide && !P_HID(buf), tp);
}

/*
 * ":tabclose": close current tab page, unless it is the last one.
 * ":tabclose N": close tab page N.
 */
    static void
ex_tabclose(eap)
    exarg_T     *eap;
{
    tabpage_T   *tp;

# ifdef FEAT_CMDWIN
    if (cmdwin_type != 0)
        cmdwin_result = K_IGNORE;
    else
# endif
        if (first_tabpage->tp_next == NULL)
            EMSG(_("E784: Cannot close last tab page"));
        else
        {
            if (eap->addr_count > 0)
            {
                tp = find_tabpage((int)eap->line2);
                if (tp == NULL)
                {
                    beep_flush();
                    return;
                }
                if (tp != curtab)
                {
                    tabpage_close_other(tp, eap->forceit);
                    return;
                }
            }
            if (!text_locked()
#ifdef FEAT_AUTOCMD
                    && !curbuf_locked()
#endif
               )
                tabpage_close(eap->forceit);
        }
}

/*
 * ":tabonly": close all tab pages except the current one
 */
    static void
ex_tabonly(eap)
    exarg_T     *eap;
{
    tabpage_T   *tp;
    int         done;

# ifdef FEAT_CMDWIN
    if (cmdwin_type != 0)
        cmdwin_result = K_IGNORE;
    else
# endif
        if (first_tabpage->tp_next == NULL)
            MSG(_("Already only one tab page"));
        else
        {
            /* Repeat this up to a 1000 times, because autocommands may mess
             * up the lists. */
            for (done = 0; done < 1000; ++done)
            {
                for (tp = first_tabpage; tp != NULL; tp = tp->tp_next)
                    if (tp->tp_topframe != topframe)
                    {
                        tabpage_close_other(tp, eap->forceit);
                        /* if we failed to close it quit */
                        if (valid_tabpage(tp))
                            done = 1000;
                        /* start over, "tp" is now invalid */
                        break;
                    }
                if (first_tabpage->tp_next == NULL)
                    break;
            }
        }
}

/*
 * Close the current tab page.
 */
    void
tabpage_close(forceit)
    int     forceit;
{
    /* First close all the windows but the current one.  If that worked then
     * close the last window in this tab, that will close it. */
    if (lastwin != firstwin)
        close_others(TRUE, forceit);
    if (lastwin == firstwin)
        ex_win_close(forceit, curwin, NULL);
# ifdef FEAT_GUI
    need_mouse_correct = TRUE;
# endif
}

/*
 * Close tab page "tp", which is not the current tab page.
 * Note that autocommands may make "tp" invalid.
 * Also takes care of the tab pages line disappearing when closing the
 * last-but-one tab page.
 */
    void
tabpage_close_other(tp, forceit)
    tabpage_T   *tp;
    int         forceit;
{
    int         done = 0;
    win_T       *wp;
    int         h = tabline_height();

    /* Limit to 1000 windows, autocommands may add a window while we close
     * one.  OK, so I'm paranoid... */
    while (++done < 1000)
    {
        wp = tp->tp_firstwin;
        ex_win_close(forceit, wp, tp);

        /* Autocommands may delete the tab page under our fingers and we may
         * fail to close a window with a modified buffer. */
        if (!valid_tabpage(tp) || tp->tp_firstwin == wp)
            break;
    }

    redraw_tabline = TRUE;
    if (h != tabline_height())
        shell_new_rows();
}

/*
 * ":only".
 */
    static void
ex_only(eap)
    exarg_T     *eap;
{
# ifdef FEAT_GUI
    need_mouse_correct = TRUE;
# endif
    close_others(TRUE, eap->forceit);
}

/*
 * ":all" and ":sall".
 * Also used for ":tab drop file ..." after setting the argument list.
 */
    void
ex_all(eap)
    exarg_T     *eap;
{
    if (eap->addr_count == 0)
        eap->line2 = 9999;
    do_arg_all((int)eap->line2, eap->forceit, eap->cmdidx == CMD_drop);
}
#endif /* FEAT_WINDOWS */

    static void
ex_hide(eap)
    exarg_T     *eap;
{
    if (*eap->arg != NUL && check_nextcmd(eap->arg) == NULL)
        eap->errmsg = e_invarg;
    else
    {
        /* ":hide" or ":hide | cmd": hide current window */
        eap->nextcmd = check_nextcmd(eap->arg);
#ifdef FEAT_WINDOWS
        if (!eap->skip)
        {
# ifdef FEAT_GUI
            need_mouse_correct = TRUE;
# endif
            win_close(curwin, FALSE);   /* don't free buffer */
        }
#endif
    }
}

/*
 * ":stop" and ":suspend": Suspend Vim.
 */
    static void
ex_stop(eap)
    exarg_T     *eap;
{
    /*
     * Disallow suspending for "rvim".
     */
    if (!check_restricted()
#ifdef WIN3264
        /*
         * Check if external commands are allowed now.
         */
        && can_end_termcap_mode(TRUE)
#endif
                                        )
    {
        if (!eap->forceit)
            autowrite_all();
        windgoto((int)Rows - 1, 0);
        out_char('\n');
        out_flush();
        stoptermcap();
        out_flush();            /* needed for SUN to restore xterm buffer */
#ifdef FEAT_TITLE
        mch_restore_title(3);   /* restore window titles */
#endif
        ui_suspend();           /* call machine specific function */
#ifdef FEAT_TITLE
        maketitle();
        resettitle();           /* force updating the title */
#endif
        starttermcap();
        scroll_start();         /* scroll screen before redrawing */
        redraw_later_clear();
        shell_resized();        /* may have resized window */
    }
}

/*
 * ":exit", ":xit" and ":wq": Write file and exit Vim.
 */
    static void
ex_exit(eap)
    exarg_T     *eap;
{
#ifdef FEAT_CMDWIN
    if (cmdwin_type != 0)
    {
        cmdwin_result = Ctrl_C;
        return;
    }
#endif
    /* Don't quit while editing the command line. */
    if (text_locked())
    {
        text_locked_msg();
        return;
    }
#ifdef FEAT_AUTOCMD
    if (curbuf_locked())
        return;
#endif

    /*
     * if more files or windows we won't exit
     */
    if (check_more(FALSE, eap->forceit) == OK && only_one_window())
        exiting = TRUE;
    if (       ((eap->cmdidx == CMD_wq
                    || curbufIsChanged())
                && do_write(eap) == FAIL)
            || check_more(TRUE, eap->forceit) == FAIL
            || (only_one_window() && check_changed_any(eap->forceit)))
    {
        not_exiting();
    }
    else
    {
#ifdef FEAT_WINDOWS
        if (only_one_window())      /* quit last window, exit Vim */
#endif
            getout(0);
#ifdef FEAT_WINDOWS
# ifdef FEAT_GUI
        need_mouse_correct = TRUE;
# endif
        /* quit current window, may free buffer */
        win_close(curwin, !P_HID(curwin->w_buffer));
#endif
    }
}

/*
 * ":print", ":list", ":number".
 */
    static void
ex_print(eap)
    exarg_T     *eap;
{
    if (curbuf->b_ml.ml_flags & ML_EMPTY)
        EMSG(_(e_emptybuf));
    else
    {
        for ( ;!got_int; ui_breakcheck())
        {
            print_line(eap->line1,
                    (eap->cmdidx == CMD_number || eap->cmdidx == CMD_pound
                                                 || (eap->flags & EXFLAG_NR)),
                    eap->cmdidx == CMD_list || (eap->flags & EXFLAG_LIST));
            if (++eap->line1 > eap->line2)
                break;
            out_flush();            /* show one line at a time */
        }
        setpcmark();
        /* put cursor at last line */
        curwin->w_cursor.lnum = eap->line2;
        beginline(BL_SOL | BL_FIX);
    }

    ex_no_reprint = TRUE;
}

#ifdef FEAT_BYTEOFF
    static void
ex_goto(eap)
    exarg_T     *eap;
{
    goto_byte(eap->line2);
}
#endif

/*
 * ":shell".
 */
/*ARGSUSED*/
    static void
ex_shell(eap)
    exarg_T     *eap;
{
    do_shell(NULL, 0);
}

#if (defined(FEAT_WINDOWS) && defined(HAVE_DROP_FILE)) \
        || (defined(FEAT_GUI_GTK) && defined(FEAT_DND)) \
        || defined(FEAT_GUI_MSWIN) \
        || defined(FEAT_GUI_MAC) \
        || defined(PROTO)

/*
 * Handle a file drop. The code is here because a drop is *nearly* like an
 * :args command, but not quite (we have a list of exact filenames, so we
 * don't want to (a) parse a command line, or (b) expand wildcards. So the
 * code is very similar to :args and hence needs access to a lot of the static
 * functions in this file.
 *
 * The list should be allocated using alloc(), as should each item in the
 * list. This function takes over responsibility for freeing the list.
 *
 * XXX The list is made into the arggument list. This is freed using
 * FreeWild(), which does a series of vim_free() calls, unless the two defines
 * __EMX__ and __ALWAYS_HAS_TRAILING_NUL_POINTER are set. In this case, a
 * routine _fnexplodefree() is used. This may cause problems, but as the drop
 * file functionality is (currently) not in EMX this is not presently a
 * problem.
 */
    void
handle_drop(filec, filev, split)
    int         filec;          /* the number of files dropped */
    char_u      **filev;        /* the list of files dropped */
    int         split;          /* force splitting the window */
{
    exarg_T     ea;
    int         save_msg_scroll = msg_scroll;

    /* Postpone this while editing the command line. */
    if (text_locked())
        return;
#ifdef FEAT_AUTOCMD
    if (curbuf_locked())
        return;
#endif

    /* Check whether the current buffer is changed. If so, we will need
     * to split the current window or data could be lost.
     * We don't need to check if the 'hidden' option is set, as in this
     * case the buffer won't be lost.
     */
    if (!P_HID(curbuf) && !split)
    {
        ++emsg_off;
        split = check_changed(curbuf, TRUE, FALSE, FALSE, FALSE);
        --emsg_off;
    }
    if (split)
    {
# ifdef FEAT_WINDOWS
        if (win_split(0, 0) == FAIL)
            return;
#  ifdef FEAT_SCROLLBIND
        curwin->w_p_scb = FALSE;
#  endif

        /* When splitting the window, create a new alist.  Otherwise the
         * existing one is overwritten. */
        alist_unlink(curwin->w_alist);
        alist_new();
# else
        return;     /* can't split, always fail */
# endif
    }

    /*
     * Set up the new argument list.
     */
    alist_set(ALIST(curwin), filec, filev, FALSE, NULL, 0);

    /*
     * Move to the first file.
     */
    /* Fake up a minimal "next" command for do_argfile() */
    vim_memset(&ea, 0, sizeof(ea));
    ea.cmd = (char_u *)"next";
    do_argfile(&ea, 0);

    /* do_ecmd() may set need_start_insertmode, but since we never left Insert
     * mode that is not needed here. */
    need_start_insertmode = FALSE;

    /* Restore msg_scroll, otherwise a following command may cause scrolling
     * unexpectedly.  The screen will be redrawn by the caller, thus
     * msg_scroll being set by displaying a message is irrelevant. */
    msg_scroll = save_msg_scroll;
}
#endif

/*
 * Clear an argument list: free all file names and reset it to zero entries.
 */
    void
alist_clear(al)
    alist_T     *al;
{
    while (--al->al_ga.ga_len >= 0)
        vim_free(AARGLIST(al)[al->al_ga.ga_len].ae_fname);
    ga_clear(&al->al_ga);
}

/*
 * Init an argument list.
 */
    void
alist_init(al)
    alist_T     *al;
{
    ga_init2(&al->al_ga, (int)sizeof(aentry_T), 5);
}

#if defined(FEAT_WINDOWS) || defined(PROTO)

/*
 * Remove a reference from an argument list.
 * Ignored when the argument list is the global one.
 * If the argument list is no longer used by any window, free it.
 */
    void
alist_unlink(al)
    alist_T     *al;
{
    if (al != &global_alist && --al->al_refcount <= 0)
    {
        alist_clear(al);
        vim_free(al);
    }
}

# if defined(FEAT_LISTCMDS) || defined(HAVE_DROP_FILE) || defined(PROTO)
/*
 * Create a new argument list and use it for the current window.
 */
    void
alist_new()
{
    curwin->w_alist = (alist_T *)alloc((unsigned)sizeof(alist_T));
    if (curwin->w_alist == NULL)
    {
        curwin->w_alist = &global_alist;
        ++global_alist.al_refcount;
    }
    else
    {
        curwin->w_alist->al_refcount = 1;
        alist_init(curwin->w_alist);
    }
}
# endif
#endif

#if (!defined(UNIX) && !defined(__EMX__)) || defined(ARCHIE) || defined(PROTO)
/*
 * Expand the file names in the global argument list.
 * If "fnum_list" is not NULL, use "fnum_list[fnum_len]" as a list of buffer
 * numbers to be re-used.
 */
    void
alist_expand(fnum_list, fnum_len)
    int         *fnum_list;
    int         fnum_len;
{
    char_u      **old_arg_files;
    int         old_arg_count;
    char_u      **new_arg_files;
    int         new_arg_file_count;
    char_u      *save_p_su = p_su;
    int         i;

    /* Don't use 'suffixes' here.  This should work like the shell did the
     * expansion.  Also, the vimrc file isn't read yet, thus the user
     * can't set the options. */
    p_su = empty_option;
    old_arg_files = (char_u **)alloc((unsigned)(sizeof(char_u *) * GARGCOUNT));
    if (old_arg_files != NULL)
    {
        for (i = 0; i < GARGCOUNT; ++i)
            old_arg_files[i] = vim_strsave(GARGLIST[i].ae_fname);
        old_arg_count = GARGCOUNT;
        if (expand_wildcards(old_arg_count, old_arg_files,
                    &new_arg_file_count, &new_arg_files,
                    EW_FILE|EW_NOTFOUND|EW_ADDSLASH) == OK
                && new_arg_file_count > 0)
        {
            alist_set(&global_alist, new_arg_file_count, new_arg_files,
                                                   TRUE, fnum_list, fnum_len);
            FreeWild(old_arg_count, old_arg_files);
        }
    }
    p_su = save_p_su;
}
#endif

/*
 * Set the argument list for the current window.
 * Takes over the allocated files[] and the allocated fnames in it.
 */
    void
alist_set(al, count, files, use_curbuf, fnum_list, fnum_len)
    alist_T     *al;
    int         count;
    char_u      **files;
    int         use_curbuf;
    int         *fnum_list;
    int         fnum_len;
{
    int         i;

    alist_clear(al);
    if (ga_grow(&al->al_ga, count) == OK)
    {
        for (i = 0; i < count; ++i)
        {
            if (got_int)
            {
                /* When adding many buffers this can take a long time.  Allow
                 * interrupting here. */
                while (i < count)
                    vim_free(files[i++]);
                break;
            }

            /* May set buffer name of a buffer previously used for the
             * argument list, so that it's re-used by alist_add. */
            if (fnum_list != NULL && i < fnum_len)
                buf_set_name(fnum_list[i], files[i]);

            alist_add(al, files[i], use_curbuf ? 2 : 1);
            ui_breakcheck();
        }
        vim_free(files);
    }
    else
        FreeWild(count, files);
#ifdef FEAT_WINDOWS
    if (al == &global_alist)
#endif
        arg_had_last = FALSE;
}

/*
 * Add file "fname" to argument list "al".
 * "fname" must have been allocated and "al" must have been checked for room.
 */
    void
alist_add(al, fname, set_fnum)
    alist_T     *al;
    char_u      *fname;
    int         set_fnum;       /* 1: set buffer number; 2: re-use curbuf */
{
    if (fname == NULL)          /* don't add NULL file names */
        return;
#ifdef BACKSLASH_IN_FILENAME
    slash_adjust(fname);
#endif
    AARGLIST(al)[al->al_ga.ga_len].ae_fname = fname;
    if (set_fnum > 0)
        AARGLIST(al)[al->al_ga.ga_len].ae_fnum =
            buflist_add(fname, BLN_LISTED | (set_fnum == 2 ? BLN_CURBUF : 0));
    ++al->al_ga.ga_len;
}

#if defined(BACKSLASH_IN_FILENAME) || defined(PROTO)
/*
 * Adjust slashes in file names.  Called after 'shellslash' was set.
 */
    void
alist_slash_adjust()
{
    int         i;
# ifdef FEAT_WINDOWS
    win_T       *wp;
    tabpage_T   *tp;
# endif

    for (i = 0; i < GARGCOUNT; ++i)
        if (GARGLIST[i].ae_fname != NULL)
            slash_adjust(GARGLIST[i].ae_fname);
# ifdef FEAT_WINDOWS
    FOR_ALL_TAB_WINDOWS(tp, wp)
        if (wp->w_alist != &global_alist)
            for (i = 0; i < WARGCOUNT(wp); ++i)
                if (WARGLIST(wp)[i].ae_fname != NULL)
                    slash_adjust(WARGLIST(wp)[i].ae_fname);
# endif
}
#endif

/*
 * ":preserve".
 */
/*ARGSUSED*/
    static void
ex_preserve(eap)
    exarg_T     *eap;
{
    curbuf->b_flags |= BF_PRESERVED;
    ml_preserve(curbuf, TRUE);
}

/*
 * ":recover".
 */
    static void
ex_recover(eap)
    exarg_T     *eap;
{
    /* Set recoverymode right away to avoid the ATTENTION prompt. */
    recoverymode = TRUE;
    if (!check_changed(curbuf, p_awa, TRUE, eap->forceit, FALSE)
            && (*eap->arg == NUL
                             || setfname(curbuf, eap->arg, NULL, TRUE) == OK))
        ml_recover();
    recoverymode = FALSE;
}

/*
 * Command modifier used in a wrong way.
 */
    static void
ex_wrongmodifier(eap)
    exarg_T     *eap;
{
    eap->errmsg = e_invcmd;
}

#ifdef FEAT_WINDOWS
/*
 * :sview [+command] file       split window with new file, read-only
 * :split [[+command] file]     split window with current or new file
 * :vsplit [[+command] file]    split window vertically with current or new file
 * :new [[+command] file]       split window with no or new file
 * :vnew [[+command] file]      split vertically window with no or new file
 * :sfind [+command] file       split window with file in 'path'
 *
 * :tabedit                     open new Tab page with empty window
 * :tabedit [+command] file     open new Tab page and edit "file"
 * :tabnew [[+command] file]    just like :tabedit
 * :tabfind [+command] file     open new Tab page and find "file"
 */
    void
ex_splitview(eap)
    exarg_T     *eap;
{
    win_T       *old_curwin = curwin;
# if defined(FEAT_SEARCHPATH) || defined(FEAT_BROWSE)
    char_u      *fname = NULL;
# endif
# ifdef FEAT_BROWSE
    int         browse_flag = cmdmod.browse;
# endif

# ifndef FEAT_VERTSPLIT
    if (eap->cmdidx == CMD_vsplit || eap->cmdidx == CMD_vnew)
    {
        ex_ni(eap);
        return;
    }
# endif

# ifdef FEAT_GUI
    need_mouse_correct = TRUE;
# endif

# ifdef FEAT_QUICKFIX
    /* A ":split" in the quickfix window works like ":new".  Don't want two
     * quickfix windows. */
    if (bt_quickfix(curbuf))
    {
        if (eap->cmdidx == CMD_split)
            eap->cmdidx = CMD_new;
#  ifdef FEAT_VERTSPLIT
        if (eap->cmdidx == CMD_vsplit)
            eap->cmdidx = CMD_vnew;
#  endif
    }
# endif

# ifdef FEAT_SEARCHPATH
    if (eap->cmdidx == CMD_sfind || eap->cmdidx == CMD_tabfind)
    {
        fname = find_file_in_path(eap->arg, (int)STRLEN(eap->arg),
                                          FNAME_MESS, TRUE, curbuf->b_ffname);
        if (fname == NULL)
            goto theend;
        eap->arg = fname;
    }
#  ifdef FEAT_BROWSE
    else
#  endif
# endif
# ifdef FEAT_BROWSE
    if (cmdmod.browse
#  ifdef FEAT_VERTSPLIT
            && eap->cmdidx != CMD_vnew
# endif
            && eap->cmdidx != CMD_new)
    {
        if (
# ifdef FEAT_GUI
            !gui.in_use &&
# endif
                au_has_group((char_u *)"FileExplorer"))
        {
            /* No browsing supported but we do have the file explorer:
             * Edit the directory. */
            if (*eap->arg == NUL || !mch_isdir(eap->arg))
                eap->arg = (char_u *)".";
        }
        else
        {
            fname = do_browse(0, (char_u *)_("Edit File in new window"),
                                          eap->arg, NULL, NULL, NULL, curbuf);
            if (fname == NULL)
                goto theend;
            eap->arg = fname;
        }
    }
    cmdmod.browse = FALSE;      /* Don't browse again in do_ecmd(). */
# endif

    /*
     * Either open new tab page or split the window.
     */
    if (eap->cmdidx == CMD_tabedit
            || eap->cmdidx == CMD_tabfind
            || eap->cmdidx == CMD_tabnew)
    {
        if (win_new_tabpage(cmdmod.tab != 0 ? cmdmod.tab
                         : eap->addr_count == 0 ? 0
                                               : (int)eap->line2 + 1) != FAIL)
        {
            do_exedit(eap, NULL);

            /* set the alternate buffer for the window we came from */
            if (curwin != old_curwin
                    && win_valid(old_curwin)
                    && old_curwin->w_buffer != curbuf
                    && !cmdmod.keepalt)
                old_curwin->w_alt_fnum = curbuf->b_fnum;
        }
    }
    else if (win_split(eap->addr_count > 0 ? (int)eap->line2 : 0,
                                     *eap->cmd == 'v' ? WSP_VERT : 0) != FAIL)
    {
# ifdef FEAT_SCROLLBIND
        /* Reset 'scrollbind' when editing another file, but keep it when
         * doing ":split" without arguments. */
        if (*eap->arg != NUL
#  ifdef FEAT_BROWSE
                || cmdmod.browse
#  endif
           )
            curwin->w_p_scb = FALSE;
        else
            do_check_scrollbind(FALSE);
# endif
        do_exedit(eap, old_curwin);
    }

# ifdef FEAT_BROWSE
    cmdmod.browse = browse_flag;
# endif

# if defined(FEAT_SEARCHPATH) || defined(FEAT_BROWSE)
theend:
    vim_free(fname);
# endif
}

#if defined(FEAT_MOUSE) || defined(PROTO)
/*
 * Open a new tab page.
 */
    void
tabpage_new()
{
    exarg_T     ea;

    vim_memset(&ea, 0, sizeof(ea));
    ea.cmdidx = CMD_tabnew;
    ea.cmd = (char_u *)"tabn";
    ea.arg = (char_u *)"";
    ex_splitview(&ea);
}
#endif

/*
 * :tabnext command
 */
    static void
ex_tabnext(eap)
    exarg_T     *eap;
{
    switch (eap->cmdidx)
    {
        case CMD_tabfirst:
        case CMD_tabrewind:
            goto_tabpage(1);
            break;
        case CMD_tablast:
            goto_tabpage(9999);
            break;
        case CMD_tabprevious:
        case CMD_tabNext:
            goto_tabpage(eap->addr_count == 0 ? -1 : -(int)eap->line2);
            break;
        default: /* CMD_tabnext */
            goto_tabpage(eap->addr_count == 0 ? 0 : (int)eap->line2);
            break;
    }
}

/*
 * :tabmove command
 */
    static void
ex_tabmove(eap)
    exarg_T     *eap;
{
    tabpage_move(eap->addr_count == 0 ? 9999 : (int)eap->line2);
}

/*
 * :tabs command: List tabs and their contents.
 */
/*ARGSUSED*/
    static void
ex_tabs(eap)
    exarg_T     *eap;
{
    tabpage_T   *tp;
    win_T       *wp;
    int         tabcount = 1;

    msg_start();
    msg_scroll = TRUE;
    for (tp = first_tabpage; tp != NULL && !got_int; tp = tp->tp_next)
    {
        msg_putchar('\n');
        vim_snprintf((char *)IObuff, IOSIZE, _("Tab page %d"), tabcount++);
        msg_outtrans_attr(IObuff, hl_attr(HLF_T));
        out_flush();        /* output one line at a time */
        ui_breakcheck();

        if (tp  == curtab)
            wp = firstwin;
        else
            wp = tp->tp_firstwin;
        for ( ; wp != NULL && !got_int; wp = wp->w_next)
        {
            msg_putchar('\n');
            msg_putchar(wp == curwin ? '>' : ' ');
            msg_putchar(' ');
            msg_putchar(bufIsChanged(wp->w_buffer) ? '+' : ' ');
            msg_putchar(' ');
            if (buf_spname(wp->w_buffer) != NULL)
                STRCPY(IObuff, buf_spname(wp->w_buffer));
            else
                home_replace(wp->w_buffer, wp->w_buffer->b_fname,
                                                        IObuff, IOSIZE, TRUE);
            msg_outtrans(IObuff);
            out_flush();            /* output one line at a time */
            ui_breakcheck();
        }
    }
}

#endif /* FEAT_WINDOWS */

/*
 * ":mode": Set screen mode.
 * If no argument given, just get the screen size and redraw.
 */
    static void
ex_mode(eap)
    exarg_T     *eap;
{
    if (*eap->arg == NUL)
        shell_resized();
    else
        mch_screenmode(eap->arg);
}

#ifdef FEAT_WINDOWS
/*
 * ":resize".
 * set, increment or decrement current window height
 */
    static void
ex_resize(eap)
    exarg_T     *eap;
{
    int         n;
    win_T       *wp = curwin;

    if (eap->addr_count > 0)
    {
        n = eap->line2;
        for (wp = firstwin; wp->w_next != NULL && --n > 0; wp = wp->w_next)
            ;
    }

#ifdef FEAT_GUI
    need_mouse_correct = TRUE;
#endif
    n = atol((char *)eap->arg);
#ifdef FEAT_VERTSPLIT
    if (cmdmod.split & WSP_VERT)
    {
        if (*eap->arg == '-' || *eap->arg == '+')
            n += W_WIDTH(curwin);
        else if (n == 0 && eap->arg[0] == NUL)  /* default is very wide */
            n = 9999;
        win_setwidth_win((int)n, wp);
    }
    else
#endif
    {
        if (*eap->arg == '-' || *eap->arg == '+')
            n += curwin->w_height;
        else if (n == 0 && eap->arg[0] == NUL)  /* default is very wide */
            n = 9999;
        win_setheight_win((int)n, wp);
    }
}
#endif

/*
 * ":find [+command] <file>" command.
 */
    static void
ex_find(eap)
    exarg_T     *eap;
{
#ifdef FEAT_SEARCHPATH
    char_u      *fname;
    int         count;

    fname = find_file_in_path(eap->arg, (int)STRLEN(eap->arg), FNAME_MESS,
                                                      TRUE, curbuf->b_ffname);
    if (eap->addr_count > 0)
    {
        /* Repeat finding the file "count" times.  This matters when it
         * appears several times in the path. */
        count = eap->line2;
        while (fname != NULL && --count > 0)
        {
            vim_free(fname);
            fname = find_file_in_path(NULL, 0, FNAME_MESS,
                                                     FALSE, curbuf->b_ffname);
        }
    }

    if (fname != NULL)
    {
        eap->arg = fname;
#endif
        do_exedit(eap, NULL);
#ifdef FEAT_SEARCHPATH
        vim_free(fname);
    }
#endif
}

/*
 * ":open" simulation: for now just work like ":visual".
 */
    static void
ex_open(eap)
    exarg_T     *eap;
{
    regmatch_T  regmatch;
    char_u      *p;

    curwin->w_cursor.lnum = eap->line2;
    beginline(BL_SOL | BL_FIX);
    if (*eap->arg == '/')
    {
        /* ":open /pattern/": put cursor in column found with pattern */
        ++eap->arg;
        p = skip_regexp(eap->arg, '/', p_magic, NULL);
        *p = NUL;
        regmatch.regprog = vim_regcomp(eap->arg, p_magic ? RE_MAGIC : 0);
        if (regmatch.regprog != NULL)
        {
            regmatch.rm_ic = p_ic;
            p = ml_get_curline();
            if (vim_regexec(&regmatch, p, (colnr_T)0))
                curwin->w_cursor.col = (colnr_T)(regmatch.startp[0] - p);
            else
                EMSG(_(e_nomatch));
            vim_free(regmatch.regprog);
        }
        /* Move to the NUL, ignore any other arguments. */
        eap->arg += STRLEN(eap->arg);
    }
    check_cursor();

    eap->cmdidx = CMD_visual;
    do_exedit(eap, NULL);
}

/*
 * ":edit", ":badd", ":visual".
 */
    static void
ex_edit(eap)
    exarg_T     *eap;
{
    do_exedit(eap, NULL);
}

/*
 * ":edit <file>" command and alikes.
 */
/*ARGSUSED*/
    void
do_exedit(eap, old_curwin)
    exarg_T     *eap;
    win_T       *old_curwin;        /* curwin before doing a split or NULL */
{
    int         n;
#ifdef FEAT_WINDOWS
    int         need_hide;
#endif
    int         exmode_was = exmode_active;

    /*
     * ":vi" command ends Ex mode.
     */
    if (exmode_active && (eap->cmdidx == CMD_visual
                                                || eap->cmdidx == CMD_view))
    {
        exmode_active = FALSE;
        if (*eap->arg == NUL)
        {
            /* Special case:  ":global/pat/visual\NLvi-commands" */
            if (global_busy)
            {
                int     rd = RedrawingDisabled;
                int     nwr = no_wait_return;
                int     ms = msg_scroll;
#ifdef FEAT_GUI
                int     he = hold_gui_events;
#endif

                if (eap->nextcmd != NULL)
                {
                    stuffReadbuff(eap->nextcmd);
                    eap->nextcmd = NULL;
                }

                if (exmode_was != EXMODE_VIM)
                    settmode(TMODE_RAW);
                RedrawingDisabled = 0;
                no_wait_return = 0;
                need_wait_return = FALSE;
                msg_scroll = 0;
#ifdef FEAT_GUI
                hold_gui_events = 0;
#endif
                must_redraw = CLEAR;

                main_loop(FALSE, TRUE);

                RedrawingDisabled = rd;
                no_wait_return = nwr;
                msg_scroll = ms;
#ifdef FEAT_GUI
                hold_gui_events = he;
#endif
            }
            return;
        }
    }

    if ((eap->cmdidx == CMD_new
                || eap->cmdidx == CMD_tabnew
                || eap->cmdidx == CMD_tabedit
#ifdef FEAT_VERTSPLIT
                || eap->cmdidx == CMD_vnew
#endif
                ) && *eap->arg == NUL)
    {
        /* ":new" or ":tabnew" without argument: edit an new empty buffer */
        setpcmark();
        (void)do_ecmd(0, NULL, NULL, eap, ECMD_ONE,
                               ECMD_HIDE + (eap->forceit ? ECMD_FORCEIT : 0));
    }
    else if ((eap->cmdidx != CMD_split
#ifdef FEAT_VERTSPLIT
                && eap->cmdidx != CMD_vsplit
#endif
                )
            || *eap->arg != NUL
#ifdef FEAT_BROWSE
            || cmdmod.browse
#endif
            )
    {
#ifdef FEAT_AUTOCMD
        /* Can't edit another file when "curbuf_lock" is set.  Only ":edit"
         * can bring us here, others are stopped earlier. */
        if (*eap->arg != NUL && curbuf_locked())
            return;
#endif
        n = readonlymode;
        if (eap->cmdidx == CMD_view || eap->cmdidx == CMD_sview)
            readonlymode = TRUE;
        else if (eap->cmdidx == CMD_enew)
            readonlymode = FALSE;   /* 'readonly' doesn't make sense in an
                                       empty buffer */
        setpcmark();
        if (do_ecmd(0, (eap->cmdidx == CMD_enew ? NULL : eap->arg),
                    NULL, eap,
                    /* ":edit" goes to first line if Vi compatible */
                    (*eap->arg == NUL && eap->do_ecmd_lnum == 0
                                      && vim_strchr(p_cpo, CPO_GOTO1) != NULL)
                                               ? ECMD_ONE : eap->do_ecmd_lnum,
                    (P_HID(curbuf) ? ECMD_HIDE : 0)
                    + (eap->forceit ? ECMD_FORCEIT : 0)
#ifdef FEAT_LISTCMDS
                    + (eap->cmdidx == CMD_badd ? ECMD_ADDBUF : 0 )
#endif
                    ) == FAIL)
        {
            /* Editing the file failed.  If the window was split, close it. */
#ifdef FEAT_WINDOWS
            if (old_curwin != NULL)
            {
                need_hide = (curbufIsChanged() && curbuf->b_nwindows <= 1);
                if (!need_hide || P_HID(curbuf))
                {
# if defined(FEAT_AUTOCMD) && defined(FEAT_EVAL)
                    cleanup_T   cs;

                    /* Reset the error/interrupt/exception state here so that
                     * aborting() returns FALSE when closing a window. */
                    enter_cleanup(&cs);
# endif
# ifdef FEAT_GUI
                    need_mouse_correct = TRUE;
# endif
                    win_close(curwin, !need_hide && !P_HID(curbuf));

# if defined(FEAT_AUTOCMD) && defined(FEAT_EVAL)
                    /* Restore the error/interrupt/exception state if not
                     * discarded by a new aborting error, interrupt, or
                     * uncaught exception. */
                    leave_cleanup(&cs);
# endif
                }
            }
#endif
        }
        else if (readonlymode && curbuf->b_nwindows == 1)
        {
            /* When editing an already visited buffer, 'readonly' won't be set
             * but the previous value is kept.  With ":view" and ":sview" we
             * want the  file to be readonly, except when another window is
             * editing the same buffer. */
            curbuf->b_p_ro = TRUE;
        }
        readonlymode = n;
    }
    else
    {
        if (eap->do_ecmd_cmd != NULL)
            do_cmdline_cmd(eap->do_ecmd_cmd);
#ifdef FEAT_TITLE
        n = curwin->w_arg_idx_invalid;
#endif
        check_arg_idx(curwin);
#ifdef FEAT_TITLE
        if (n != curwin->w_arg_idx_invalid)
            maketitle();
#endif
    }

#ifdef FEAT_WINDOWS
    /*
     * if ":split file" worked, set alternate file name in old window to new
     * file
     */
    if (old_curwin != NULL
            && *eap->arg != NUL
            && curwin != old_curwin
            && win_valid(old_curwin)
            && old_curwin->w_buffer != curbuf
            && !cmdmod.keepalt)
        old_curwin->w_alt_fnum = curbuf->b_fnum;
#endif

    ex_no_reprint = TRUE;
}

#ifndef FEAT_GUI
/*
 * ":gui" and ":gvim" when there is no GUI.
 */
    static void
ex_nogui(eap)
    exarg_T     *eap;
{
    eap->errmsg = e_nogvim;
}
#endif

#if defined(FEAT_GUI_W32) && defined(FEAT_MENU) && defined(FEAT_TEAROFF)
    static void
ex_tearoff(eap)
    exarg_T     *eap;
{
    gui_make_tearoff(eap->arg);
}
#endif

#if (defined(FEAT_GUI_MSWIN) || defined(FEAT_GUI_GTK)) && defined(FEAT_MENU)
    static void
ex_popup(eap)
    exarg_T     *eap;
{
    gui_make_popup(eap->arg, eap->forceit);
}
#endif

/*ARGSUSED*/
    static void
ex_swapname(eap)
    exarg_T     *eap;
{
    if (curbuf->b_ml.ml_mfp == NULL || curbuf->b_ml.ml_mfp->mf_fname == NULL)
        MSG(_("No swap file"));
    else
        msg(curbuf->b_ml.ml_mfp->mf_fname);
}

/*
 * ":syncbind" forces all 'scrollbind' windows to have the same relative
 * offset.
 * (1998-11-02 16:21:01  R. Edward Ralston <eralston@computer.org>)
 */
/*ARGSUSED*/
    static void
ex_syncbind(eap)
    exarg_T     *eap;
{
#ifdef FEAT_SCROLLBIND
    win_T       *wp;
    long        topline;
    long        y;
    linenr_T    old_linenr = curwin->w_cursor.lnum;

    setpcmark();

    /*
     * determine max topline
     */
    if (curwin->w_p_scb)
    {
        topline = curwin->w_topline;
        for (wp = firstwin; wp; wp = wp->w_next)
        {
            if (wp->w_p_scb && wp->w_buffer)
            {
                y = wp->w_buffer->b_ml.ml_line_count - p_so;
                if (topline > y)
                    topline = y;
            }
        }
        if (topline < 1)
            topline = 1;
    }
    else
    {
        topline = 1;
    }


    /*
     * set all scrollbind windows to the same topline
     */
    wp = curwin;
    for (curwin = firstwin; curwin; curwin = curwin->w_next)
    {
        if (curwin->w_p_scb)
        {
            y = topline - curwin->w_topline;
            if (y > 0)
                scrollup(y, TRUE);
            else
                scrolldown(-y, TRUE);
            curwin->w_scbind_pos = topline;
            redraw_later(VALID);
            cursor_correct();
#ifdef FEAT_WINDOWS
            curwin->w_redr_status = TRUE;
#endif
        }
    }
    curwin = wp;
    if (curwin->w_p_scb)
    {
        did_syncbind = TRUE;
        checkpcmark();
        if (old_linenr != curwin->w_cursor.lnum)
        {
            char_u ctrl_o[2];

            ctrl_o[0] = Ctrl_O;
            ctrl_o[1] = 0;
            ins_typebuf(ctrl_o, REMAP_NONE, 0, TRUE, FALSE);
        }
    }
#endif
}


    static void
ex_read(eap)
    exarg_T     *eap;
{
    int         i;
    int         empty = (curbuf->b_ml.ml_flags & ML_EMPTY);
    linenr_T    lnum;

    if (eap->usefilter)                 /* :r!cmd */
        do_bang(1, eap, FALSE, FALSE, TRUE);
    else
    {
        if (u_save(eap->line2, (linenr_T)(eap->line2 + 1)) == FAIL)
            return;

#ifdef FEAT_BROWSE
        if (cmdmod.browse)
        {
            char_u *browseFile;

            browseFile = do_browse(0, (char_u *)_("Append File"), eap->arg,
                                                    NULL, NULL, NULL, curbuf);
            if (browseFile != NULL)
            {
                i = readfile(browseFile, NULL,
                          eap->line2, (linenr_T)0, (linenr_T)MAXLNUM, eap, 0);
                vim_free(browseFile);
            }
            else
                i = OK;
        }
        else
#endif
             if (*eap->arg == NUL)
        {
            if (check_fname() == FAIL)  /* check for no file name */
                return;
            i = readfile(curbuf->b_ffname, curbuf->b_fname,
                          eap->line2, (linenr_T)0, (linenr_T)MAXLNUM, eap, 0);
        }
        else
        {
            if (vim_strchr(p_cpo, CPO_ALTREAD) != NULL)
                (void)setaltfname(eap->arg, eap->arg, (linenr_T)1);
            i = readfile(eap->arg, NULL,
                          eap->line2, (linenr_T)0, (linenr_T)MAXLNUM, eap, 0);

        }
        if (i == FAIL)
        {
#if defined(FEAT_AUTOCMD) && defined(FEAT_EVAL)
            if (!aborting())
#endif
                EMSG2(_(e_notopen), eap->arg);
        }
        else
        {
            if (empty && exmode_active)
            {
                /* Delete the empty line that remains.  Historically ex does
                 * this but vi doesn't. */
                if (eap->line2 == 0)
                    lnum = curbuf->b_ml.ml_line_count;
                else
                    lnum = 1;
                if (*ml_get(lnum) == NUL && u_savedel(lnum, 1L) == OK)
                {
                    ml_delete(lnum, FALSE);
                    deleted_lines_mark(lnum, 1L);
                    if (curwin->w_cursor.lnum > 1
                                             && curwin->w_cursor.lnum >= lnum)
                        --curwin->w_cursor.lnum;
                }
            }
            redraw_curbuf_later(VALID);
        }
    }
}

static char_u   *prev_dir = NULL;

#if defined(EXITFREE) || defined(PROTO)
    void
free_cd_dir()
{
    vim_free(prev_dir);
}
#endif


/*
 * ":cd", ":lcd", ":chdir" and ":lchdir".
 */
    static void
ex_cd(eap)
    exarg_T     *eap;
{
    char_u              *new_dir;
    char_u              *tofree;

    new_dir = eap->arg;
#if !defined(UNIX) && !defined(VMS)
    /* for non-UNIX ":cd" means: print current directory */
    if (*new_dir == NUL)
        ex_pwd(NULL);
    else
#endif
    {
        if (vim_strchr(p_cpo, CPO_CHDIR) != NULL && curbufIsChanged()
                                                             && !eap->forceit)
        {
            EMSG(_("E747: Cannot change directory, buffer is modifed (add ! to override)"));
            return;
        }

        /* ":cd -": Change to previous directory */
        if (STRCMP(new_dir, "-") == 0)
        {
            if (prev_dir == NULL)
            {
                EMSG(_("E186: No previous directory"));
                return;
            }
            new_dir = prev_dir;
        }

        /* Save current directory for next ":cd -" */
        tofree = prev_dir;
        if (mch_dirname(NameBuff, MAXPATHL) == OK)
            prev_dir = vim_strsave(NameBuff);
        else
            prev_dir = NULL;

#if defined(UNIX) || defined(VMS)
        /* for UNIX ":cd" means: go to home directory */
        if (*new_dir == NUL)
        {
            /* use NameBuff for home directory name */
# ifdef VMS
            char_u      *p;

            p = mch_getenv((char_u *)"SYS$LOGIN");
            if (p == NULL || *p == NUL) /* empty is the same as not set */
                NameBuff[0] = NUL;
            else
                vim_strncpy(NameBuff, p, MAXPATHL - 1);
# else
            expand_env((char_u *)"$HOME", NameBuff, MAXPATHL);
# endif
            new_dir = NameBuff;
        }
#endif
        if (new_dir == NULL || vim_chdir(new_dir))
            EMSG(_(e_failed));
        else
        {
            vim_free(curwin->w_localdir);
            if (eap->cmdidx == CMD_lcd || eap->cmdidx == CMD_lchdir)
            {
                /* If still in global directory, need to remember current
                 * directory as global directory. */
                if (globaldir == NULL && prev_dir != NULL)
                    globaldir = vim_strsave(prev_dir);
                /* Remember this local directory for the window. */
                if (mch_dirname(NameBuff, MAXPATHL) == OK)
                    curwin->w_localdir = vim_strsave(NameBuff);
            }
            else
            {
                /* We are now in the global directory, no need to remember its
                 * name. */
                vim_free(globaldir);
                globaldir = NULL;
                curwin->w_localdir = NULL;
            }

            shorten_fnames(TRUE);

            /* Echo the new current directory if the command was typed. */
            if (KeyTyped)
                ex_pwd(eap);
        }
        vim_free(tofree);
    }
}

/*
 * ":pwd".
 */
/*ARGSUSED*/
    static void
ex_pwd(eap)
    exarg_T     *eap;
{
    if (mch_dirname(NameBuff, MAXPATHL) == OK)
    {
#ifdef BACKSLASH_IN_FILENAME
        slash_adjust(NameBuff);
#endif
        msg(NameBuff);
    }
    else
        EMSG(_("E187: Unknown"));
}

/*
 * ":=".
 */
    static void
ex_equal(eap)
    exarg_T     *eap;
{
    smsg((char_u *)"%ld", (long)eap->line2);
    ex_may_print(eap);
}

    static void
ex_sleep(eap)
    exarg_T     *eap;
{
    int         n;
    long        len;

    if (cursor_valid())
    {
        n = W_WINROW(curwin) + curwin->w_wrow - msg_scrolled;
        if (n >= 0)
            windgoto((int)n, curwin->w_wcol);
    }

    len = eap->line2;
    switch (*eap->arg)
    {
        case 'm': break;
        case NUL: len *= 1000L; break;
        default: EMSG2(_(e_invarg2), eap->arg); return;
    }
    do_sleep(len);
}

/*
 * Sleep for "msec" milliseconds, but keep checking for a CTRL-C every second.
 */
    void
do_sleep(msec)
    long        msec;
{
    long        done;

    cursor_on();
    out_flush();
    for (done = 0; !got_int && done < msec; done += 1000L)
    {
        ui_delay(msec - done > 1000L ? 1000L : msec - done, TRUE);
        ui_breakcheck();
    }
}

    static void
do_exmap(eap, isabbrev)
    exarg_T     *eap;
    int         isabbrev;
{
    int     mode;
    char_u  *cmdp;

    cmdp = eap->cmd;
    mode = get_map_mode(&cmdp, eap->forceit || isabbrev);

    switch (do_map((*cmdp == 'n') ? 2 : (*cmdp == 'u'),
                                                    eap->arg, mode, isabbrev))
    {
        case 1: EMSG(_(e_invarg));
                break;
        case 2: EMSG(isabbrev ? _(e_noabbr) : _(e_nomap));
                break;
    }
}

/*
 * ":winsize" command (obsolete).
 */
    static void
ex_winsize(eap)
    exarg_T     *eap;
{
    int         w, h;
    char_u      *arg = eap->arg;
    char_u      *p;

    w = getdigits(&arg);
    arg = skipwhite(arg);
    p = arg;
    h = getdigits(&arg);
    if (*p != NUL && *arg == NUL)
        set_shellsize(w, h, TRUE);
    else
        EMSG(_("E465: :winsize requires two number arguments"));
}

#ifdef FEAT_WINDOWS
    static void
ex_wincmd(eap)
    exarg_T     *eap;
{
    int         xchar = NUL;
    char_u      *p;

    if (*eap->arg == 'g' || *eap->arg == Ctrl_G)
    {
        /* CTRL-W g and CTRL-W CTRL-G  have an extra command character */
        if (eap->arg[1] == NUL)
        {
            EMSG(_(e_invarg));
            return;
        }
        xchar = eap->arg[1];
        p = eap->arg + 2;
    }
    else
        p = eap->arg + 1;

    eap->nextcmd = check_nextcmd(p);
    p = skipwhite(p);
    if (*p != NUL && *p != '"' && eap->nextcmd == NULL)
        EMSG(_(e_invarg));
    else
    {
        /* Pass flags on for ":vertical wincmd ]". */
        postponed_split_flags = cmdmod.split;
        postponed_split_tab = cmdmod.tab;
        do_window(*eap->arg, eap->addr_count > 0 ? eap->line2 : 0L, xchar);
        postponed_split_flags = 0;
        postponed_split_tab = 0;
    }
}
#endif

#if defined(FEAT_GUI) || defined(UNIX) || defined(VMS) || defined(MSWIN)
/*
 * ":winpos".
 */
    static void
ex_winpos(eap)
    exarg_T     *eap;
{
    int         x, y;
    char_u      *arg = eap->arg;
    char_u      *p;

    if (*arg == NUL)
    {
# if defined(FEAT_GUI) || defined(MSWIN)
#  ifdef FEAT_GUI
        if (gui.in_use && gui_mch_get_winpos(&x, &y) != FAIL)
#  else
        if (mch_get_winpos(&x, &y) != FAIL)
#  endif
        {
            sprintf((char *)IObuff, _("Window position: X %d, Y %d"), x, y);
            msg(IObuff);
        }
        else
# endif
            EMSG(_("E188: Obtaining window position not implemented for this platform"));
    }
    else
    {
        x = getdigits(&arg);
        arg = skipwhite(arg);
        p = arg;
        y = getdigits(&arg);
        if (*p == NUL || *arg != NUL)
        {
            EMSG(_("E466: :winpos requires two number arguments"));
            return;
        }
# ifdef FEAT_GUI
        if (gui.in_use)
            gui_mch_set_winpos(x, y);
        else if (gui.starting)
        {
            /* Remember the coordinates for when the window is opened. */
            gui_win_x = x;
            gui_win_y = y;
        }
#  ifdef HAVE_TGETENT
        else
#  endif
# else
#  ifdef MSWIN
            mch_set_winpos(x, y);
#  endif
# endif
# ifdef HAVE_TGETENT
        if (*T_CWP)
            term_set_winpos(x, y);
# endif
    }
}
#endif

/*
 * Handle command that work like operators: ":delete", ":yank", ":>" and ":<".
 */
    static void
ex_operators(eap)
    exarg_T     *eap;
{
    oparg_T     oa;

    clear_oparg(&oa);
    oa.regname = eap->regname;
    oa.start.lnum = eap->line1;
    oa.end.lnum = eap->line2;
    oa.line_count = eap->line2 - eap->line1 + 1;
    oa.motion_type = MLINE;
#ifdef FEAT_VIRTUALEDIT
    virtual_op = FALSE;
#endif
    if (eap->cmdidx != CMD_yank)        /* position cursor for undo */
    {
        setpcmark();
        curwin->w_cursor.lnum = eap->line1;
        beginline(BL_SOL | BL_FIX);
    }

    switch (eap->cmdidx)
    {
        case CMD_delete:
            oa.op_type = OP_DELETE;
            op_delete(&oa);
            break;

        case CMD_yank:
            oa.op_type = OP_YANK;
            (void)op_yank(&oa, FALSE, TRUE);
            break;

        default:    /* CMD_rshift or CMD_lshift */
            if ((eap->cmdidx == CMD_rshift)
#ifdef FEAT_RIGHTLEFT
                                    ^ curwin->w_p_rl
#endif
                                                    )
                oa.op_type = OP_RSHIFT;
            else
                oa.op_type = OP_LSHIFT;
            op_shift(&oa, FALSE, eap->amount);
            break;
    }
#ifdef FEAT_VIRTUALEDIT
    virtual_op = MAYBE;
#endif
    ex_may_print(eap);
}

/*
 * ":put".
 */
    static void
ex_put(eap)
    exarg_T     *eap;
{
    /* ":0put" works like ":1put!". */
    if (eap->line2 == 0)
    {
        eap->line2 = 1;
        eap->forceit = TRUE;
    }
    curwin->w_cursor.lnum = eap->line2;
    do_put(eap->regname, eap->forceit ? BACKWARD : FORWARD, 1L,
                                                       PUT_LINE|PUT_CURSLINE);
}

/*
 * Handle ":copy" and ":move".
 */
    static void
ex_copymove(eap)
    exarg_T     *eap;
{
    long        n;

    n = get_address(&eap->arg, FALSE, FALSE);
    if (eap->arg == NULL)           /* error detected */
    {
        eap->nextcmd = NULL;
        return;
    }
    get_flags(eap);

    /*
     * move or copy lines from 'eap->line1'-'eap->line2' to below line 'n'
     */
    if (n == MAXLNUM || n < 0 || n > curbuf->b_ml.ml_line_count)
    {
        EMSG(_(e_invaddr));
        return;
    }

    if (eap->cmdidx == CMD_move)
    {
        if (do_move(eap->line1, eap->line2, n) == FAIL)
            return;
    }
    else
        ex_copy(eap->line1, eap->line2, n);
    u_clearline();
    beginline(BL_SOL | BL_FIX);
    ex_may_print(eap);
}

/*
 * Print the current line if flags were given to the Ex command.
 */
    static void
ex_may_print(eap)
    exarg_T     *eap;
{
    if (eap->flags != 0)
    {
        print_line(curwin->w_cursor.lnum, (eap->flags & EXFLAG_NR),
                                                  (eap->flags & EXFLAG_LIST));
        ex_no_reprint = TRUE;
    }
}

/*
 * ":smagic" and ":snomagic".
 */
    static void
ex_submagic(eap)
    exarg_T     *eap;
{
    int         magic_save = p_magic;

    p_magic = (eap->cmdidx == CMD_smagic);
    do_sub(eap);
    p_magic = magic_save;
}

/*
 * ":join".
 */
    static void
ex_join(eap)
    exarg_T     *eap;
{
    curwin->w_cursor.lnum = eap->line1;
    if (eap->line1 == eap->line2)
    {
        if (eap->addr_count >= 2)   /* :2,2join does nothing */
            return;
        if (eap->line2 == curbuf->b_ml.ml_line_count)
        {
            beep_flush();
            return;
        }
        ++eap->line2;
    }
    do_do_join(eap->line2 - eap->line1 + 1, !eap->forceit);
    beginline(BL_WHITE | BL_FIX);
    ex_may_print(eap);
}

/*
 * ":[addr]@r" or ":[addr]*r": execute register
 */
    static void
ex_at(eap)
    exarg_T     *eap;
{
    int         c;

    curwin->w_cursor.lnum = eap->line2;

#ifdef USE_ON_FLY_SCROLL
    dont_scroll = TRUE;         /* disallow scrolling here */
#endif

    /* get the register name.  No name means to use the previous one */
    c = *eap->arg;
    if (c == NUL || (c == '*' && *eap->cmd == '*'))
        c = '@';
    /* Put the register in the typeahead buffer with the "silent" flag. */
    if (do_execreg(c, TRUE, vim_strchr(p_cpo, CPO_EXECBUF) != NULL, TRUE)
                                                                      == FAIL)
    {
        beep_flush();
    }
    else
    {
        int     save_efr = exec_from_reg;

        exec_from_reg = TRUE;

        /*
         * Execute from the typeahead buffer.
         * Originally this didn't check for the typeahead buffer to be empty,
         * thus could read more Ex commands from stdin.  It's not clear why,
         * it is certainly unexpected.
         */
        while ((!stuff_empty() || typebuf.tb_len > 0) && vpeekc() == ':')
            (void)do_cmdline(NULL, getexline, NULL, DOCMD_NOWAIT|DOCMD_VERBOSE);

        exec_from_reg = save_efr;
    }
}

/*
 * ":!".
 */
    static void
ex_bang(eap)
    exarg_T     *eap;
{
    do_bang(eap->addr_count, eap, eap->forceit, TRUE, TRUE);
}

/*
 * ":undo".
 */
/*ARGSUSED*/
    static void
ex_undo(eap)
    exarg_T     *eap;
{
    if (eap->addr_count == 1)       /* :undo 123 */
        undo_time(eap->line2, FALSE, TRUE);
    else
        u_undo(1);
}

/*
 * ":redo".
 */
/*ARGSUSED*/
    static void
ex_redo(eap)
    exarg_T     *eap;
{
    u_redo(1);
}

/*
 * ":earlier" and ":later".
 */
/*ARGSUSED*/
    static void
ex_later(eap)
    exarg_T     *eap;
{
    long        count = 0;
    int         sec = FALSE;
    char_u      *p = eap->arg;

    if (*p == NUL)
        count = 1;
    else if (isdigit(*p))
    {
        count = getdigits(&p);
        switch (*p)
        {
            case 's': ++p; sec = TRUE; break;
            case 'm': ++p; sec = TRUE; count *= 60; break;
            case 'h': ++p; sec = TRUE; count *= 60 * 60; break;
        }
    }

    if (*p != NUL)
        EMSG2(_(e_invarg2), eap->arg);
    else
        undo_time(eap->cmdidx == CMD_earlier ? -count : count, sec, FALSE);
}

/*
 * ":redir": start/stop redirection.
 */
    static void
ex_redir(eap)
    exarg_T     *eap;
{
    char        *mode;
    char_u      *fname;
    char_u      *arg = eap->arg;

    if (STRICMP(eap->arg, "END") == 0)
        close_redir();
    else
    {
        if (*arg == '>')
        {
            ++arg;
            if (*arg == '>')
            {
                ++arg;
                mode = "a";
            }
            else
                mode = "w";
            arg = skipwhite(arg);

            close_redir();

            /* Expand environment variables and "~/". */
            fname = expand_env_save(arg);
            if (fname == NULL)
                return;
#ifdef FEAT_BROWSE
            if (cmdmod.browse)
            {
                char_u  *browseFile;

                browseFile = do_browse(BROWSE_SAVE,
                        (char_u *)_("Save Redirection"),
                        fname, NULL, NULL, BROWSE_FILTER_ALL_FILES, curbuf);
                if (browseFile == NULL)
                    return;             /* operation cancelled */
                vim_free(fname);
                fname = browseFile;
                eap->forceit = TRUE;    /* since dialog already asked */
            }
#endif

            redir_fd = open_exfile(fname, eap->forceit, mode);
            vim_free(fname);
        }
#ifdef FEAT_EVAL
        else if (*arg == '@')
        {
            /* redirect to a register a-z (resp. A-Z for appending) */
            close_redir();
            ++arg;
            if (ASCII_ISALPHA(*arg)
# ifdef FEAT_CLIPBOARD
                    || *arg == '*'
                    || *arg == '+'
# endif
                    || *arg == '"')
            {
                redir_reg = *arg++;
                if (*arg == '>' && arg[1] == '>')
                    arg += 2;
                else if ((*arg == NUL || (*arg == '>' && arg[1] == NUL)) &&
                         (islower(redir_reg)
# ifdef FEAT_CLIPBOARD
                            || redir_reg == '*'
                            || redir_reg == '+'
# endif
                            || redir_reg == '"'))
                {
                    if (*arg == '>')
                        arg++;

                    /* make register empty */
                    write_reg_contents(redir_reg, (char_u *)"", -1, FALSE);
                }
            }
            if (*arg != NUL)
            {
                redir_reg = 0;
                EMSG2(_(e_invarg2), eap->arg);
            }
        }
        else if (*arg == '=' && arg[1] == '>')
        {
            int append;

            /* redirect to a variable */
            close_redir();
            arg += 2;

            if (*arg == '>')
            {
                ++arg;
                append = TRUE;
            }
            else
                append = FALSE;

            if (var_redir_start(skipwhite(arg), append) == OK)
                redir_vname = 1;
        }
#endif

        /* TODO: redirect to a buffer */

        else
            EMSG2(_(e_invarg2), eap->arg);
    }

    /* Make sure redirection is not off.  Can happen for cmdline completion
     * that indirectly invokes a command to catch its output. */
    if (redir_fd != NULL
#ifdef FEAT_EVAL
                          || redir_reg || redir_vname
#endif
                                                        )
        redir_off = FALSE;
}

/*
 * ":redraw": force redraw
 */
    static void
ex_redraw(eap)
    exarg_T     *eap;
{
    int         r = RedrawingDisabled;
    int         p = p_lz;

    RedrawingDisabled = 0;
    p_lz = FALSE;
    update_topline();
    update_screen(eap->forceit ? CLEAR :
#ifdef FEAT_VISUAL
            VIsual_active ? INVERTED :
#endif
            0);
#ifdef FEAT_TITLE
    if (need_maketitle)
        maketitle();
#endif
    RedrawingDisabled = r;
    p_lz = p;

    /* Reset msg_didout, so that a message that's there is overwritten. */
    msg_didout = FALSE;
    msg_col = 0;

    out_flush();
}

/*
 * ":redrawstatus": force redraw of status line(s)
 */
/*ARGSUSED*/
    static void
ex_redrawstatus(eap)
    exarg_T     *eap;
{
#if defined(FEAT_WINDOWS)
    int         r = RedrawingDisabled;
    int         p = p_lz;

    RedrawingDisabled = 0;
    p_lz = FALSE;
    if (eap->forceit)
        status_redraw_all();
    else
        status_redraw_curbuf();
    update_screen(
# ifdef FEAT_VISUAL
            VIsual_active ? INVERTED :
# endif
            0);
    RedrawingDisabled = r;
    p_lz = p;
    out_flush();
#endif
}

    static void
close_redir()
{
    if (redir_fd != NULL)
    {
        fclose(redir_fd);
        redir_fd = NULL;
    }
#ifdef FEAT_EVAL
    redir_reg = 0;
    if (redir_vname)
    {
        var_redir_stop();
        redir_vname = 0;
    }
#endif
}

#if defined(FEAT_SESSION) && defined(USE_CRNL)
# define MKSESSION_NL
static int mksession_nl = FALSE;    /* use NL only in put_eol() */
#endif

/*
 * ":mkexrc", ":mkvimrc", ":mkview" and ":mksession".
 */
    static void
ex_mkrc(eap)
    exarg_T     *eap;
{
    FILE        *fd;
    int         failed = FALSE;
    char_u      *fname;
#ifdef FEAT_BROWSE
    char_u      *browseFile = NULL;
#endif
#ifdef FEAT_SESSION
    int         view_session = FALSE;
    int         using_vdir = FALSE;     /* using 'viewdir'? */
    char_u      *viewFile = NULL;
    unsigned    *flagp;
#endif

    if (eap->cmdidx == CMD_mksession || eap->cmdidx == CMD_mkview)
    {
#ifdef FEAT_SESSION
        view_session = TRUE;
#else
        ex_ni(eap);
        return;
#endif
    }

#ifdef FEAT_SESSION
    did_lcd = FALSE;

    /* ":mkview" or ":mkview 9": generate file name with 'viewdir' */
    if (eap->cmdidx == CMD_mkview
            && (*eap->arg == NUL
                || (vim_isdigit(*eap->arg) && eap->arg[1] == NUL)))
    {
        eap->forceit = TRUE;
        fname = get_view_file(*eap->arg);
        if (fname == NULL)
            return;
        viewFile = fname;
        using_vdir = TRUE;
    }
    else
#endif
        if (*eap->arg != NUL)
        fname = eap->arg;
    else if (eap->cmdidx == CMD_mkvimrc)
        fname = (char_u *)VIMRC_FILE;
#ifdef FEAT_SESSION
    else if (eap->cmdidx == CMD_mksession)
        fname = (char_u *)SESSION_FILE;
#endif
    else
        fname = (char_u *)EXRC_FILE;

#ifdef FEAT_BROWSE
    if (cmdmod.browse)
    {
        browseFile = do_browse(BROWSE_SAVE,
# ifdef FEAT_SESSION
                eap->cmdidx == CMD_mkview ? (char_u *)_("Save View") :
                eap->cmdidx == CMD_mksession ? (char_u *)_("Save Session") :
# endif
                (char_u *)_("Save Setup"),
                fname, (char_u *)"vim", NULL, BROWSE_FILTER_MACROS, NULL);
        if (browseFile == NULL)
            goto theend;
        fname = browseFile;
        eap->forceit = TRUE;    /* since dialog already asked */
    }
#endif

#if defined(FEAT_SESSION) && defined(vim_mkdir)
    /* When using 'viewdir' may have to create the directory. */
    if (using_vdir && !mch_isdir(p_vdir))
        vim_mkdir_emsg(p_vdir, 0755);
#endif

    fd = open_exfile(fname, eap->forceit, WRITEBIN);
    if (fd != NULL)
    {
#ifdef FEAT_SESSION
        if (eap->cmdidx == CMD_mkview)
            flagp = &vop_flags;
        else
            flagp = &ssop_flags;
#endif

#ifdef MKSESSION_NL
        /* "unix" in 'sessionoptions': use NL line separator */
        if (view_session && (*flagp & SSOP_UNIX))
            mksession_nl = TRUE;
#endif

        /* Write the version command for :mkvimrc */
        if (eap->cmdidx == CMD_mkvimrc)
            (void)put_line(fd, "version 6.0");

#ifdef FEAT_SESSION
        if (eap->cmdidx == CMD_mksession)
        {
            if (put_line(fd, "let SessionLoad = 1") == FAIL)
                failed = TRUE;
        }

        if (eap->cmdidx != CMD_mkview)
#endif
        {
            /* Write setting 'compatible' first, because it has side effects.
             * For that same reason only do it when needed. */
            if (p_cp)
                (void)put_line(fd, "if !&cp | set cp | endif");
            else
                (void)put_line(fd, "if &cp | set nocp | endif");
        }

#ifdef FEAT_SESSION
        if (!view_session
                || (eap->cmdidx == CMD_mksession
                    && (*flagp & SSOP_OPTIONS)))
#endif
            failed |= (makemap(fd, NULL) == FAIL
                                   || makeset(fd, OPT_GLOBAL, FALSE) == FAIL);

#ifdef FEAT_SESSION
        if (!failed && view_session)
        {
            if (put_line(fd, "let s:so_save = &so | let s:siso_save = &siso | set so=0 siso=0") == FAIL)
                failed = TRUE;
            if (eap->cmdidx == CMD_mksession)
            {
                char_u dirnow[MAXPATHL];        /* current directory */

                /*
                 * Change to session file's dir.
                 */
                if (mch_dirname(dirnow, MAXPATHL) == FAIL
                                            || mch_chdir((char *)dirnow) != 0)
                    *dirnow = NUL;
                if (*dirnow != NUL && (ssop_flags & SSOP_SESDIR))
                {
                    if (vim_chdirfile(fname) == OK)
                        shorten_fnames(TRUE);
                }
                else if (*dirnow != NUL
                        && (ssop_flags & SSOP_CURDIR) && globaldir != NULL)
                {
                    (void)mch_chdir((char *)globaldir);
                    shorten_fnames(TRUE);
                }

                failed |= (makeopens(fd, dirnow) == FAIL);

                /* restore original dir */
                if (*dirnow != NUL && ((ssop_flags & SSOP_SESDIR)
                        || ((ssop_flags & SSOP_CURDIR) && globaldir != NULL)))
                {
                    if (mch_chdir((char *)dirnow) != 0)
                        EMSG(_(e_prev_dir));
                    shorten_fnames(TRUE);
                }
            }
            else
            {
                failed |= (put_view(fd, curwin, !using_vdir, flagp) == FAIL);
            }
            if (put_line(fd, "let &so = s:so_save | let &siso = s:siso_save")
                                                                      == FAIL)
                failed = TRUE;
            if (put_line(fd, "doautoall SessionLoadPost") == FAIL)
                failed = TRUE;
            if (eap->cmdidx == CMD_mksession)
            {
                if (put_line(fd, "unlet SessionLoad") == FAIL)
                    failed = TRUE;
            }
        }
#endif
        if (put_line(fd, "\" vim: set ft=vim :") == FAIL)
            failed = TRUE;

        failed |= fclose(fd);

        if (failed)
            EMSG(_(e_write));
#if defined(FEAT_EVAL) && defined(FEAT_SESSION)
        else if (eap->cmdidx == CMD_mksession)
        {
            /* successful session write - set this_session var */
            char_u      tbuf[MAXPATHL];

            if (vim_FullName(fname, tbuf, MAXPATHL, FALSE) == OK)
                set_vim_var_string(VV_THIS_SESSION, tbuf, -1);
        }
#endif
#ifdef MKSESSION_NL
        mksession_nl = FALSE;
#endif
    }

#ifdef FEAT_BROWSE
theend:
    vim_free(browseFile);
#endif
#ifdef FEAT_SESSION
    vim_free(viewFile);
#endif
}

#if ((defined(FEAT_SESSION) || defined(FEAT_EVAL)) && defined(vim_mkdir)) \
        || defined(PROTO)
/*ARGSUSED*/
    int
vim_mkdir_emsg(name, prot)
    char_u      *name;
    int         prot;
{
    if (vim_mkdir(name, prot) != 0)
    {
        EMSG2(_("E739: Cannot create directory: %s"), name);
        return FAIL;
    }
    return OK;
}
#endif

/*
 * Open a file for writing for an Ex command, with some checks.
 * Return file descriptor, or NULL on failure.
 */
    FILE *
open_exfile(fname, forceit, mode)
    char_u      *fname;
    int         forceit;
    char        *mode;      /* "w" for create new file or "a" for append */
{
    FILE        *fd;

#ifdef UNIX
    /* with Unix it is possible to open a directory */
    if (mch_isdir(fname))
    {
        EMSG2(_(e_isadir2), fname);
        return NULL;
    }
#endif
    if (!forceit && *mode != 'a' && vim_fexists(fname))
    {
        EMSG2(_("E189: \"%s\" exists (add ! to override)"), fname);
        return NULL;
    }

    if ((fd = mch_fopen((char *)fname, mode)) == NULL)
        EMSG2(_("E190: Cannot open \"%s\" for writing"), fname);

    return fd;
}

/*
 * ":mark" and ":k".
 */
    static void
ex_mark(eap)
    exarg_T     *eap;
{
    pos_T       pos;

    if (*eap->arg == NUL)               /* No argument? */
        EMSG(_(e_argreq));
    else if (eap->arg[1] != NUL)        /* more than one character? */
        EMSG(_(e_trailing));
    else
    {
        pos = curwin->w_cursor;         /* save curwin->w_cursor */
        curwin->w_cursor.lnum = eap->line2;
        beginline(BL_WHITE | BL_FIX);
        if (setmark(*eap->arg) == FAIL) /* set mark */
            EMSG(_("E191: Argument must be a letter or forward/backward quote"));
        curwin->w_cursor = pos;         /* restore curwin->w_cursor */
    }
}

/*
 * Update w_topline, w_leftcol and the cursor position.
 */
    void
update_topline_cursor()
{
    check_cursor();             /* put cursor on valid line */
    update_topline();
    if (!curwin->w_p_wrap)
        validate_cursor();
    update_curswant();
}

#ifdef FEAT_EX_EXTRA
/*
 * ":normal[!] {commands}": Execute normal mode commands.
 */
    static void
ex_normal(eap)
    exarg_T     *eap;
{
    int         save_msg_scroll = msg_scroll;
    int         save_restart_edit = restart_edit;
    int         save_msg_didout = msg_didout;
    int         save_State = State;
    tasave_T    tabuf;
    int         save_insertmode = p_im;
    int         save_finish_op = finish_op;
#ifdef FEAT_MBYTE
    char_u      *arg = NULL;
    int         l;
    char_u      *p;
#endif

    if (ex_normal_lock > 0)
    {
        EMSG(_(e_secure));
        return;
    }
    if (ex_normal_busy >= p_mmd)
    {
        EMSG(_("E192: Recursive use of :normal too deep"));
        return;
    }
    ++ex_normal_busy;

    msg_scroll = FALSE;     /* no msg scrolling in Normal mode */
    restart_edit = 0;       /* don't go to Insert mode */
    p_im = FALSE;           /* don't use 'insertmode' */

#ifdef FEAT_MBYTE
    /*
     * vgetc() expects a CSI and K_SPECIAL to have been escaped.  Don't do
     * this for the K_SPECIAL leading byte, otherwise special keys will not
     * work.
     */
    if (has_mbyte)
    {
        int     len = 0;

        /* Count the number of characters to be escaped. */
        for (p = eap->arg; *p != NUL; ++p)
        {
# ifdef FEAT_GUI
            if (*p == CSI)  /* leadbyte CSI */
                len += 2;
# endif
            for (l = (*mb_ptr2len)(p) - 1; l > 0; --l)
                if (*++p == K_SPECIAL     /* trailbyte K_SPECIAL or CSI */
# ifdef FEAT_GUI
                        || *p == CSI
# endif
                        )
                    len += 2;
        }
        if (len > 0)
        {
            arg = alloc((unsigned)(STRLEN(eap->arg) + len + 1));
            if (arg != NULL)
            {
                len = 0;
                for (p = eap->arg; *p != NUL; ++p)
                {
                    arg[len++] = *p;
# ifdef FEAT_GUI
                    if (*p == CSI)
                    {
                        arg[len++] = KS_EXTRA;
                        arg[len++] = (int)KE_CSI;
                    }
# endif
                    for (l = (*mb_ptr2len)(p) - 1; l > 0; --l)
                    {
                        arg[len++] = *++p;
                        if (*p == K_SPECIAL)
                        {
                            arg[len++] = KS_SPECIAL;
                            arg[len++] = KE_FILLER;
                        }
# ifdef FEAT_GUI
                        else if (*p == CSI)
                        {
                            arg[len++] = KS_EXTRA;
                            arg[len++] = (int)KE_CSI;
                        }
# endif
                    }
                    arg[len] = NUL;
                }
            }
        }
    }
#endif

    /*
     * Save the current typeahead.  This is required to allow using ":normal"
     * from an event handler and makes sure we don't hang when the argument
     * ends with half a command.
     */
    save_typeahead(&tabuf);
    if (tabuf.typebuf_valid)
    {
        /*
         * Repeat the :normal command for each line in the range.  When no
         * range given, execute it just once, without positioning the cursor
         * first.
         */
        do
        {
            if (eap->addr_count != 0)
            {
                curwin->w_cursor.lnum = eap->line1++;
                curwin->w_cursor.col = 0;
            }

            exec_normal_cmd(
#ifdef FEAT_MBYTE
                    arg != NULL ? arg :
#endif
                    eap->arg, eap->forceit ? REMAP_NONE : REMAP_YES, FALSE);
        }
        while (eap->addr_count > 0 && eap->line1 <= eap->line2 && !got_int);
    }

    /* Might not return to the main loop when in an event handler. */
    update_topline_cursor();

    /* Restore the previous typeahead. */
    restore_typeahead(&tabuf);

    --ex_normal_busy;
    msg_scroll = save_msg_scroll;
    restart_edit = save_restart_edit;
    p_im = save_insertmode;
    finish_op = save_finish_op;
    msg_didout |= save_msg_didout;      /* don't reset msg_didout now */

    /* Restore the state (needed when called from a function executed for
     * 'indentexpr'). */
    State = save_State;
#ifdef FEAT_MBYTE
    vim_free(arg);
#endif
}

/*
 * ":startinsert", ":startreplace" and ":startgreplace"
 */
    static void
ex_startinsert(eap)
    exarg_T     *eap;
{
    if (eap->forceit)
    {
        coladvance((colnr_T)MAXCOL);
        curwin->w_curswant = MAXCOL;
        curwin->w_set_curswant = FALSE;
    }

    /* Ignore the command when already in Insert mode.  Inserting an
     * expression register that invokes a function can do this. */
    if (State & INSERT)
        return;

    if (eap->cmdidx == CMD_startinsert)
        restart_edit = 'a';
    else if (eap->cmdidx == CMD_startreplace)
        restart_edit = 'R';
    else
        restart_edit = 'V';

    if (!eap->forceit)
    {
        if (eap->cmdidx == CMD_startinsert)
            restart_edit = 'i';
        curwin->w_curswant = 0;     /* avoid MAXCOL */
    }
}

/*
 * ":stopinsert"
 */
/*ARGSUSED*/
    static void
ex_stopinsert(eap)
    exarg_T     *eap;
{
    restart_edit = 0;
    stop_insert_mode = TRUE;
}
#endif

#if defined(FEAT_EX_EXTRA) || defined(FEAT_MENU) || defined(PROTO)
/*
 * Execute normal mode command "cmd".
 * "remap" can be REMAP_NONE or REMAP_YES.
 */
    void
exec_normal_cmd(cmd, remap, silent)
    char_u      *cmd;
    int         remap;
    int         silent;
{
    oparg_T     oa;

    /*
     * Stuff the argument into the typeahead buffer.
     * Execute normal_cmd() until there is no typeahead left.
     */
    clear_oparg(&oa);
    finish_op = FALSE;
    ins_typebuf(cmd, remap, 0, TRUE, silent);
    while ((!stuff_empty() || (!typebuf_typed() && typebuf.tb_len > 0))
                                                                  && !got_int)
    {
        update_topline_cursor();
        normal_cmd(&oa, FALSE); /* execute a Normal mode cmd */
    }
}
#endif

#ifdef FEAT_FIND_ID
    static void
ex_checkpath(eap)
    exarg_T     *eap;
{
    find_pattern_in_path(NULL, 0, 0, FALSE, FALSE, CHECK_PATH, 1L,
                                   eap->forceit ? ACTION_SHOW_ALL : ACTION_SHOW,
                                              (linenr_T)1, (linenr_T)MAXLNUM);
}

#if defined(FEAT_WINDOWS) && defined(FEAT_QUICKFIX)
/*
 * ":psearch"
 */
    static void
ex_psearch(eap)
    exarg_T     *eap;
{
    g_do_tagpreview = p_pvh;
    ex_findpat(eap);
    g_do_tagpreview = 0;
}
#endif

    static void
ex_findpat(eap)
    exarg_T     *eap;
{
    int         whole = TRUE;
    long        n;
    char_u      *p;
    int         action;

    switch (cmdnames[eap->cmdidx].cmd_name[2])
    {
        case 'e':       /* ":psearch", ":isearch" and ":dsearch" */
                if (cmdnames[eap->cmdidx].cmd_name[0] == 'p')
                    action = ACTION_GOTO;
                else
                    action = ACTION_SHOW;
                break;
        case 'i':       /* ":ilist" and ":dlist" */
                action = ACTION_SHOW_ALL;
                break;
        case 'u':       /* ":ijump" and ":djump" */
                action = ACTION_GOTO;
                break;
        default:        /* ":isplit" and ":dsplit" */
                action = ACTION_SPLIT;
                break;
    }

    n = 1;
    if (vim_isdigit(*eap->arg)) /* get count */
    {
        n = getdigits(&eap->arg);
        eap->arg = skipwhite(eap->arg);
    }
    if (*eap->arg == '/')   /* Match regexp, not just whole words */
    {
        whole = FALSE;
        ++eap->arg;
        p = skip_regexp(eap->arg, '/', p_magic, NULL);
        if (*p)
        {
            *p++ = NUL;
            p = skipwhite(p);

            /* Check for trailing illegal characters */
            if (!ends_excmd(*p))
                eap->errmsg = e_trailing;
            else
                eap->nextcmd = check_nextcmd(p);
        }
    }
    if (!eap->skip)
        find_pattern_in_path(eap->arg, 0, (int)STRLEN(eap->arg),
                            whole, !eap->forceit,
                            *eap->cmd == 'd' ?  FIND_DEFINE : FIND_ANY,
                            n, action, eap->line1, eap->line2);
}
#endif

#ifdef FEAT_WINDOWS

# ifdef FEAT_QUICKFIX
/*
 * ":ptag", ":ptselect", ":ptjump", ":ptnext", etc.
 */
    static void
ex_ptag(eap)
    exarg_T     *eap;
{
    g_do_tagpreview = p_pvh;
    ex_tag_cmd(eap, cmdnames[eap->cmdidx].cmd_name + 1);
}

/*
 * ":pedit"
 */
    static void
ex_pedit(eap)
    exarg_T     *eap;
{
    win_T       *curwin_save = curwin;

    g_do_tagpreview = p_pvh;
    prepare_tagpreview(TRUE);
    keep_help_flag = curwin_save->w_buffer->b_help;
    do_exedit(eap, NULL);
    keep_help_flag = FALSE;
    if (curwin != curwin_save && win_valid(curwin_save))
    {
        /* Return cursor to where we were */
        validate_cursor();
        redraw_later(VALID);
        win_enter(curwin_save, TRUE);
    }
    g_do_tagpreview = 0;
}
# endif

/*
 * ":stag", ":stselect" and ":stjump".
 */
    static void
ex_stag(eap)
    exarg_T     *eap;
{
    postponed_split = -1;
    postponed_split_flags = cmdmod.split;
    postponed_split_tab = cmdmod.tab;
    ex_tag_cmd(eap, cmdnames[eap->cmdidx].cmd_name + 1);
    postponed_split_flags = 0;
    postponed_split_tab = 0;
}
#endif

/*
 * ":tag", ":tselect", ":tjump", ":tnext", etc.
 */
    static void
ex_tag(eap)
    exarg_T     *eap;
{
    ex_tag_cmd(eap, cmdnames[eap->cmdidx].cmd_name);
}

    static void
ex_tag_cmd(eap, name)
    exarg_T     *eap;
    char_u      *name;
{
    int         cmd;

    switch (name[1])
    {
        case 'j': cmd = DT_JUMP;        /* ":tjump" */
                  break;
        case 's': cmd = DT_SELECT;      /* ":tselect" */
                  break;
        case 'p': cmd = DT_PREV;        /* ":tprevious" */
                  break;
        case 'N': cmd = DT_PREV;        /* ":tNext" */
                  break;
        case 'n': cmd = DT_NEXT;        /* ":tnext" */
                  break;
        case 'o': cmd = DT_POP;         /* ":pop" */
                  break;
        case 'f':                       /* ":tfirst" */
        case 'r': cmd = DT_FIRST;       /* ":trewind" */
                  break;
        case 'l': cmd = DT_LAST;        /* ":tlast" */
                  break;
        default:                        /* ":tag" */
#ifdef FEAT_CSCOPE
                  if (p_cst)
                  {
                      do_cstag(eap);
                      return;
                  }
#endif
                  cmd = DT_TAG;
                  break;
    }

    if (name[0] == 'l')
    {
#ifndef FEAT_QUICKFIX
        ex_ni(eap);
        return;
#else
        cmd = DT_LTAG;
#endif
    }

    do_tag(eap->arg, cmd, eap->addr_count > 0 ? (int)eap->line2 : 1,
                                                          eap->forceit, TRUE);
}

/*
 * Evaluate cmdline variables.
 *
 * change '%'       to curbuf->b_ffname
 *        '#'       to curwin->w_altfile
 *        '<cword>' to word under the cursor
 *        '<cWORD>' to WORD under the cursor
 *        '<cfile>' to path name under the cursor
 *        '<sfile>' to sourced file name
 *        '<afile>' to file name for autocommand
 *        '<abuf>'  to buffer number for autocommand
 *        '<amatch>' to matching name for autocommand
 *
 * When an error is detected, "errormsg" is set to a non-NULL pointer (may be
 * "" for error without a message) and NULL is returned.
 * Returns an allocated string if a valid match was found.
 * Returns NULL if no match was found.  "usedlen" then still contains the
 * number of characters to skip.
 */
    char_u *
eval_vars(src, srcstart, usedlen, lnump, errormsg, escaped)
    char_u      *src;           /* pointer into commandline */
    char_u      *srcstart;      /* beginning of valid memory for src */
    int         *usedlen;       /* characters after src that are used */
    linenr_T    *lnump;         /* line number for :e command, or NULL */
    char_u      **errormsg;     /* pointer to error message */
    int         *escaped;       /* return value has escaped white space (can
                                 * be NULL) */
{
    int         i;
    char_u      *s;
    char_u      *result;
    char_u      *resultbuf = NULL;
    int         resultlen;
    buf_T       *buf;
    int         valid = VALID_HEAD + VALID_PATH;    /* assume valid result */
    int         spec_idx;
#ifdef FEAT_MODIFY_FNAME
    int         skip_mod = FALSE;
#endif
    static char *(spec_str[]) =
        {
                    "%",
#define SPEC_PERC   0
                    "#",
#define SPEC_HASH   1
                    "<cword>",          /* cursor word */
#define SPEC_CWORD  2
                    "<cWORD>",          /* cursor WORD */
#define SPEC_CCWORD 3
                    "<cfile>",          /* cursor path name */
#define SPEC_CFILE  4
                    "<sfile>",          /* ":so" file name */
#define SPEC_SFILE  5
#ifdef FEAT_AUTOCMD
                    "<afile>",          /* autocommand file name */
# define SPEC_AFILE 6
                    "<abuf>",           /* autocommand buffer number */
# define SPEC_ABUF  7
                    "<amatch>",         /* autocommand match name */
# define SPEC_AMATCH 8
#endif
#ifdef FEAT_CLIENTSERVER
                    "<client>"
# define SPEC_CLIENT 9
#endif
                };
#define SPEC_COUNT  (sizeof(spec_str) / sizeof(char *))

#if defined(FEAT_AUTOCMD) || defined(FEAT_CLIENTSERVER)
    char_u      strbuf[30];
#endif

    *errormsg = NULL;
    if (escaped != NULL)
        *escaped = FALSE;

    /*
     * Check if there is something to do.
     */
    for (spec_idx = 0; spec_idx < SPEC_COUNT; ++spec_idx)
    {
        *usedlen = (int)STRLEN(spec_str[spec_idx]);
        if (STRNCMP(src, spec_str[spec_idx], *usedlen) == 0)
            break;
    }
    if (spec_idx == SPEC_COUNT)     /* no match */
    {
        *usedlen = 1;
        return NULL;
    }

    /*
     * Skip when preceded with a backslash "\%" and "\#".
     * Note: In "\\%" the % is also not recognized!
     */
    if (src > srcstart && src[-1] == '\\')
    {
        *usedlen = 0;
        STRCPY(src - 1, src);           /* remove backslash */
        return NULL;
    }

    /*
     * word or WORD under cursor
     */
    if (spec_idx == SPEC_CWORD || spec_idx == SPEC_CCWORD)
    {
        resultlen = find_ident_under_cursor(&result, spec_idx == SPEC_CWORD ?
                                      (FIND_IDENT|FIND_STRING) : FIND_STRING);
        if (resultlen == 0)
        {
            *errormsg = (char_u *)"";
            return NULL;
        }
    }

    /*
     * '#': Alternate file name
     * '%': Current file name
     *      File name under the cursor
     *      File name for autocommand
     *  and following modifiers
     */
    else
    {
        switch (spec_idx)
        {
        case SPEC_PERC:         /* '%': current file */
                if (curbuf->b_fname == NULL)
                {
                    result = (char_u *)"";
                    valid = 0;      /* Must have ":p:h" to be valid */
                }
                else
#ifdef RISCOS
                    /* Always use the full path for RISC OS if possible. */
                    result = curbuf->b_ffname;
                    if (result == NULL)
                        result = curbuf->b_fname;
#else
                    result = curbuf->b_fname;
#endif
                break;

        case SPEC_HASH:         /* '#' or "#99": alternate file */
                if (src[1] == '#')  /* "##": the argument list */
                {
                    result = arg_all();
                    resultbuf = result;
                    *usedlen = 2;
                    if (escaped != NULL)
                        *escaped = TRUE;
#ifdef FEAT_MODIFY_FNAME
                    skip_mod = TRUE;
#endif
                    break;
                }
                s = src + 1;
                i = (int)getdigits(&s);
                *usedlen = (int)(s - src); /* length of what we expand */

                buf = buflist_findnr(i);
                if (buf == NULL)
                {
                    *errormsg = (char_u *)_("E194: No alternate file name to substitute for '#'");
                    return NULL;
                }
                if (lnump != NULL)
                    *lnump = ECMD_LAST;
                if (buf->b_fname == NULL)
                {
                    result = (char_u *)"";
                    valid = 0;      /* Must have ":p:h" to be valid */
                }
                else
                    result = buf->b_fname;
                break;

#ifdef FEAT_SEARCHPATH
        case SPEC_CFILE:        /* file name under cursor */
                result = file_name_at_cursor(FNAME_MESS|FNAME_HYP, 1L, NULL);
                if (result == NULL)
                {
                    *errormsg = (char_u *)"";
                    return NULL;
                }
                resultbuf = result;         /* remember allocated string */
                break;
#endif

#ifdef FEAT_AUTOCMD
        case SPEC_AFILE:        /* file name for autocommand */
                result = autocmd_fname;
                if (result == NULL)
                {
                    *errormsg = (char_u *)_("E495: no autocommand file name to substitute for \"<afile>\"");
                    return NULL;
                }
                break;

        case SPEC_ABUF:         /* buffer number for autocommand */
                if (autocmd_bufnr <= 0)
                {
                    *errormsg = (char_u *)_("E496: no autocommand buffer number to substitute for \"<abuf>\"");
                    return NULL;
                }
                sprintf((char *)strbuf, "%d", autocmd_bufnr);
                result = strbuf;
                break;

        case SPEC_AMATCH:       /* match name for autocommand */
                result = autocmd_match;
                if (result == NULL)
                {
                    *errormsg = (char_u *)_("E497: no autocommand match name to substitute for \"<amatch>\"");
                    return NULL;
                }
                break;

#endif
        case SPEC_SFILE:        /* file name for ":so" command */
                result = sourcing_name;
                if (result == NULL)
                {
                    *errormsg = (char_u *)_("E498: no :source file name to substitute for \"<sfile>\"");
                    return NULL;
                }
                break;
#if defined(FEAT_CLIENTSERVER)
        case SPEC_CLIENT:       /* Source of last submitted input */
                sprintf((char *)strbuf, PRINTF_HEX_LONG_U,
                                                        (long_u)clientWindow);
                result = strbuf;
                break;
#endif
        }

        resultlen = (int)STRLEN(result);        /* length of new string */
        if (src[*usedlen] == '<')       /* remove the file name extension */
        {
            ++*usedlen;
#ifdef RISCOS
            if ((s = vim_strrchr(result, '/')) != NULL && s >= gettail(result))
#else
            if ((s = vim_strrchr(result, '.')) != NULL && s >= gettail(result))
#endif
                resultlen = (int)(s - result);
        }
#ifdef FEAT_MODIFY_FNAME
        else if (!skip_mod)
        {
            valid |= modify_fname(src, usedlen, &result, &resultbuf,
                                                                  &resultlen);
            if (result == NULL)
            {
                *errormsg = (char_u *)"";
                return NULL;
            }
        }
#endif
    }

    if (resultlen == 0 || valid != VALID_HEAD + VALID_PATH)
    {
        if (valid != VALID_HEAD + VALID_PATH)
            /* xgettext:no-c-format */
            *errormsg = (char_u *)_("E499: Empty file name for '%' or '#', only works with \":p:h\"");
        else
            *errormsg = (char_u *)_("E500: Evaluates to an empty string");
        result = NULL;
    }
    else
        result = vim_strnsave(result, resultlen);
    vim_free(resultbuf);
    return result;
}

/*
 * Concatenate all files in the argument list, separated by spaces, and return
 * it in one allocated string.
 * Spaces and backslashes in the file names are escaped with a backslash.
 * Returns NULL when out of memory.
 */
    static char_u *
arg_all()
{
    int         len;
    int         idx;
    char_u      *retval = NULL;
    char_u      *p;

    /*
     * Do this loop two times:
     * first time: compute the total length
     * second time: concatenate the names
     */
    for (;;)
    {
        len = 0;
        for (idx = 0; idx < ARGCOUNT; ++idx)
        {
            p = alist_name(&ARGLIST[idx]);
            if (p != NULL)
            {
                if (len > 0)
                {
                    /* insert a space in between names */
                    if (retval != NULL)
                        retval[len] = ' ';
                    ++len;
                }
                for ( ; *p != NUL; ++p)
                {
                    if (*p == ' ' || *p == '\\')
                    {
                        /* insert a backslash */
                        if (retval != NULL)
                            retval[len] = '\\';
                        ++len;
                    }
                    if (retval != NULL)
                        retval[len] = *p;
                    ++len;
                }
            }
        }

        /* second time: break here */
        if (retval != NULL)
        {
            retval[len] = NUL;
            break;
        }

        /* allocate memory */
        retval = alloc(len + 1);
        if (retval == NULL)
            break;
    }

    return retval;
}

#if defined(FEAT_AUTOCMD) || defined(PROTO)
/*
 * Expand the <sfile> string in "arg".
 *
 * Returns an allocated string, or NULL for any error.
 */
    char_u *
expand_sfile(arg)
    char_u      *arg;
{
    char_u      *errormsg;
    int         len;
    char_u      *result;
    char_u      *newres;
    char_u      *repl;
    int         srclen;
    char_u      *p;

    result = vim_strsave(arg);
    if (result == NULL)
        return NULL;

    for (p = result; *p; )
    {
        if (STRNCMP(p, "<sfile>", 7) != 0)
            ++p;
        else
        {
            /* replace "<sfile>" with the sourced file name, and do ":" stuff */
            repl = eval_vars(p, result, &srclen, NULL, &errormsg, NULL);
            if (errormsg != NULL)
            {
                if (*errormsg)
                    emsg(errormsg);
                vim_free(result);
                return NULL;
            }
            if (repl == NULL)           /* no match (cannot happen) */
            {
                p += srclen;
                continue;
            }
            len = (int)STRLEN(result) - srclen + (int)STRLEN(repl) + 1;
            newres = alloc(len);
            if (newres == NULL)
            {
                vim_free(repl);
                vim_free(result);
                return NULL;
            }
            mch_memmove(newres, result, (size_t)(p - result));
            STRCPY(newres + (p - result), repl);
            len = (int)STRLEN(newres);
            STRCAT(newres, p + srclen);
            vim_free(repl);
            vim_free(result);
            result = newres;
            p = newres + len;           /* continue after the match */
        }
    }

    return result;
}
#endif

#ifdef FEAT_SESSION
static int ses_winsizes __ARGS((FILE *fd, int restore_size,
                                                        win_T *tab_firstwin));
static int ses_win_rec __ARGS((FILE *fd, frame_T *fr));
static frame_T *ses_skipframe __ARGS((frame_T *fr));
static int ses_do_frame __ARGS((frame_T *fr));
static int ses_do_win __ARGS((win_T *wp));
static int ses_arglist __ARGS((FILE *fd, char *cmd, garray_T *gap, int fullname, unsigned *flagp));
static int ses_put_fname __ARGS((FILE *fd, char_u *name, unsigned *flagp));
static int ses_fname __ARGS((FILE *fd, buf_T *buf, unsigned *flagp));

/*
 * Write openfile commands for the current buffers to an .exrc file.
 * Return FAIL on error, OK otherwise.
 */
    static int
makeopens(fd, dirnow)
    FILE        *fd;
    char_u      *dirnow;        /* Current directory name */
{
    buf_T       *buf;
    int         only_save_windows = TRUE;
    int         nr;
    int         cnr = 1;
    int         restore_size = TRUE;
    win_T       *wp;
    char_u      *sname;
    win_T       *edited_win = NULL;
    int         tabnr;
    win_T       *tab_firstwin;
    frame_T     *tab_topframe;

    if (ssop_flags & SSOP_BUFFERS)
        only_save_windows = FALSE;              /* Save ALL buffers */

    /*
     * Begin by setting the this_session variable, and then other
     * sessionable variables.
     */
#ifdef FEAT_EVAL
    if (put_line(fd, "let v:this_session=expand(\"<sfile>:p\")") == FAIL)
        return FAIL;
    if (ssop_flags & SSOP_GLOBALS)
        if (store_session_globals(fd) == FAIL)
            return FAIL;
#endif

    /*
     * Close all windows but one.
     */
    if (put_line(fd, "silent only") == FAIL)
        return FAIL;

    /*
     * Now a :cd command to the session directory or the current directory
     */
    if (ssop_flags & SSOP_SESDIR)
    {
        if (put_line(fd, "exe \"cd \" . escape(expand(\"<sfile>:p:h\"), ' ')")
                                                                      == FAIL)
            return FAIL;
    }
    else if (ssop_flags & SSOP_CURDIR)
    {
        sname = home_replace_save(NULL, globaldir != NULL ? globaldir : dirnow);
        if (sname == NULL
                || fputs("cd ", fd) < 0
                || ses_put_fname(fd, sname, &ssop_flags) == FAIL
                || put_eol(fd) == FAIL)
        {
            vim_free(sname);
            return FAIL;
        }
        vim_free(sname);
    }

    /*
     * If there is an empty, unnamed buffer we will wipe it out later.
     * Remember the buffer number.
     */
    if (put_line(fd, "if expand('%') == '' && !&modified && line('$') <= 1 && getline(1) == ''") == FAIL)
        return FAIL;
    if (put_line(fd, "  let s:wipebuf = bufnr('%')") == FAIL)
        return FAIL;
    if (put_line(fd, "endif") == FAIL)
        return FAIL;

    /*
     * Now save the current files, current buffer first.
     */
    if (put_line(fd, "set shortmess=aoO") == FAIL)
        return FAIL;

    /* Now put the other buffers into the buffer list */
    for (buf = firstbuf; buf != NULL; buf = buf->b_next)
    {
        if (!(only_save_windows && buf->b_nwindows == 0)
                && !(buf->b_help && !(ssop_flags & SSOP_HELP))
                && buf->b_fname != NULL
                && buf->b_p_bl)
        {
            if (fprintf(fd, "badd +%ld ", buf->b_wininfo == NULL ? 1L
                                           : buf->b_wininfo->wi_fpos.lnum) < 0
                    || ses_fname(fd, buf, &ssop_flags) == FAIL)
                return FAIL;
        }
    }

    /* the global argument list */
    if (ses_arglist(fd, "args", &global_alist.al_ga,
                            !(ssop_flags & SSOP_CURDIR), &ssop_flags) == FAIL)
        return FAIL;

    if (ssop_flags & SSOP_RESIZE)
    {
        /* Note: after the restore we still check it worked!*/
        if (fprintf(fd, "set lines=%ld columns=%ld" , Rows, Columns) < 0
                || put_eol(fd) == FAIL)
            return FAIL;
    }

#ifdef FEAT_GUI
    if (gui.in_use && (ssop_flags & SSOP_WINPOS))
    {
        int     x, y;

        if (gui_mch_get_winpos(&x, &y) == OK)
        {
            /* Note: after the restore we still check it worked!*/
            if (fprintf(fd, "winpos %d %d", x, y) < 0 || put_eol(fd) == FAIL)
                return FAIL;
        }
    }
#endif

    /*
     * May repeat putting Windows for each tab, when "tabpages" is in
     * 'sessionoptions'.
     * Don't use goto_tabpage(), it may change directory and trigger
     * autocommands.
     */
    tab_firstwin = firstwin;    /* first window in tab page "tabnr" */
    tab_topframe = topframe;
    for (tabnr = 1; ; ++tabnr)
    {
        int  need_tabnew = FALSE;

        if ((ssop_flags & SSOP_TABPAGES))
        {
            tabpage_T *tp = find_tabpage(tabnr);

            if (tp == NULL)
                break;          /* done all tab pages */
            if (tp == curtab)
            {
                tab_firstwin = firstwin;
                tab_topframe = topframe;
            }
            else
            {
                tab_firstwin = tp->tp_firstwin;
                tab_topframe = tp->tp_topframe;
            }
            if (tabnr > 1)
                need_tabnew = TRUE;
        }

        /*
         * Before creating the window layout, try loading one file.  If this
         * is aborted we don't end up with a number of useless windows.
         * This may have side effects! (e.g., compressed or network file).
         */
        for (wp = tab_firstwin; wp != NULL; wp = wp->w_next)
        {
            if (ses_do_win(wp)
                    && wp->w_buffer->b_ffname != NULL
                    && !wp->w_buffer->b_help
#ifdef FEAT_QUICKFIX
                    && !bt_nofile(wp->w_buffer)
#endif
                    )
            {
                if (fputs(need_tabnew ? "tabedit " : "edit ", fd) < 0
                        || ses_fname(fd, wp->w_buffer, &ssop_flags) == FAIL)
                    return FAIL;
                need_tabnew = FALSE;
                if (!wp->w_arg_idx_invalid)
                    edited_win = wp;
                break;
            }
        }

        /* If no file got edited create an empty tab page. */
        if (need_tabnew && put_line(fd, "tabnew") == FAIL)
            return FAIL;

        /*
         * Save current window layout.
         */
        if (put_line(fd, "set splitbelow splitright") == FAIL)
            return FAIL;
        if (ses_win_rec(fd, tab_topframe) == FAIL)
            return FAIL;
        if (!p_sb && put_line(fd, "set nosplitbelow") == FAIL)
            return FAIL;
        if (!p_spr && put_line(fd, "set nosplitright") == FAIL)
            return FAIL;

        /*
         * Check if window sizes can be restored (no windows omitted).
         * Remember the window number of the current window after restoring.
         */
        nr = 0;
        for (wp = tab_firstwin; wp != NULL; wp = W_NEXT(wp))
        {
            if (ses_do_win(wp))
                ++nr;
            else
                restore_size = FALSE;
            if (curwin == wp)
                cnr = nr;
        }

        /* Go to the first window. */
        if (put_line(fd, "wincmd t") == FAIL)
            return FAIL;

        /*
         * If more than one window, see if sizes can be restored.
         * First set 'winheight' and 'winwidth' to 1 to avoid the windows being
         * resized when moving between windows.
         * Do this before restoring the view, so that the topline and the
         * cursor can be set.  This is done again below.
         */
        if (put_line(fd, "set winheight=1 winwidth=1") == FAIL)
            return FAIL;
        if (nr > 1 && ses_winsizes(fd, restore_size, tab_firstwin) == FAIL)
            return FAIL;

        /*
         * Restore the view of the window (options, file, cursor, etc.).
         */
        for (wp = tab_firstwin; wp != NULL; wp = wp->w_next)
        {
            if (!ses_do_win(wp))
                continue;
            if (put_view(fd, wp, wp != edited_win, &ssop_flags) == FAIL)
                return FAIL;
            if (nr > 1 && put_line(fd, "wincmd w") == FAIL)
                return FAIL;
        }

        /*
         * Restore cursor to the current window if it's not the first one.
         */
        if (cnr > 1 && (fprintf(fd, "%dwincmd w", cnr) < 0
                                                      || put_eol(fd) == FAIL))
            return FAIL;

        /*
         * Restore window sizes again after jumping around in windows, because
         * the current window has a minimum size while others may not.
         */
        if (nr > 1 && ses_winsizes(fd, restore_size, tab_firstwin) == FAIL)
            return FAIL;

        /* Don't continue in another tab page when doing only the current one
         * or when at the last tab page. */
        if (!(ssop_flags & SSOP_TABPAGES))
            break;
    }

    if (ssop_flags & SSOP_TABPAGES)
    {
        if (fprintf(fd, "tabnext %d", tabpage_index(curtab)) < 0
                || put_eol(fd) == FAIL)
            return FAIL;
    }

    /*
     * Wipe out an empty unnamed buffer we started in.
     */
    if (put_line(fd, "if exists('s:wipebuf')") == FAIL)
        return FAIL;
    if (put_line(fd, "  silent exe 'bwipe ' . s:wipebuf") == FAIL)
        return FAIL;
    if (put_line(fd, "endif") == FAIL)
        return FAIL;
    if (put_line(fd, "unlet! s:wipebuf") == FAIL)
        return FAIL;

    /* Re-apply 'winheight', 'winwidth' and 'shortmess'. */
    if (fprintf(fd, "set winheight=%ld winwidth=%ld shortmess=%s",
                               p_wh, p_wiw, p_shm) < 0 || put_eol(fd) == FAIL)
        return FAIL;

    /*
     * Lastly, execute the x.vim file if it exists.
     */
    if (put_line(fd, "let s:sx = expand(\"<sfile>:p:r\").\"x.vim\"") == FAIL
            || put_line(fd, "if file_readable(s:sx)") == FAIL
            || put_line(fd, "  exe \"source \" . s:sx") == FAIL
            || put_line(fd, "endif") == FAIL)
        return FAIL;

    return OK;
}

    static int
ses_winsizes(fd, restore_size, tab_firstwin)
    FILE        *fd;
    int         restore_size;
    win_T       *tab_firstwin;
{
    int         n = 0;
    win_T       *wp;

    if (restore_size && (ssop_flags & SSOP_WINSIZE))
    {
        for (wp = tab_firstwin; wp != NULL; wp = wp->w_next)
        {
            if (!ses_do_win(wp))
                continue;
            ++n;

            /* restore height when not full height */
            if (wp->w_height + wp->w_status_height < topframe->fr_height
                    && (fprintf(fd,
                          "exe '%dresize ' . ((&lines * %ld + %ld) / %ld)",
                            n, (long)wp->w_height, Rows / 2, Rows) < 0
                                                  || put_eol(fd) == FAIL))
                return FAIL;

            /* restore width when not full width */
            if (wp->w_width < Columns && (fprintf(fd,
                   "exe 'vert %dresize ' . ((&columns * %ld + %ld) / %ld)",
                            n, (long)wp->w_width, Columns / 2, Columns) < 0
                                                  || put_eol(fd) == FAIL))
                return FAIL;
        }
    }
    else
    {
        /* Just equalise window sizes */
        if (put_line(fd, "wincmd =") == FAIL)
            return FAIL;
    }
    return OK;
}

/*
 * Write commands to "fd" to recursively create windows for frame "fr",
 * horizontally and vertically split.
 * After the commands the last window in the frame is the current window.
 * Returns FAIL when writing the commands to "fd" fails.
 */
    static int
ses_win_rec(fd, fr)
    FILE        *fd;
    frame_T     *fr;
{
    frame_T     *frc;
    int         count = 0;

    if (fr->fr_layout != FR_LEAF)
    {
        /* Find first frame that's not skipped and then create a window for
         * each following one (first frame is already there). */
        frc = ses_skipframe(fr->fr_child);
        if (frc != NULL)
            while ((frc = ses_skipframe(frc->fr_next)) != NULL)
            {
                /* Make window as big as possible so that we have lots of room
                 * to split. */
                if (put_line(fd, "wincmd _ | wincmd |") == FAIL
                        || put_line(fd, fr->fr_layout == FR_COL
                                                ? "split" : "vsplit") == FAIL)
                    return FAIL;
                ++count;
            }

        /* Go back to the first window. */
        if (count > 0 && (fprintf(fd, fr->fr_layout == FR_COL
                        ? "%dwincmd k" : "%dwincmd h", count) < 0
                                                      || put_eol(fd) == FAIL))
            return FAIL;

        /* Recursively create frames/windows in each window of this column or
         * row. */
        frc = ses_skipframe(fr->fr_child);
        while (frc != NULL)
        {
            ses_win_rec(fd, frc);
            frc = ses_skipframe(frc->fr_next);
            /* Go to next window. */
            if (frc != NULL && put_line(fd, "wincmd w") == FAIL)
                return FAIL;
        }
    }
    return OK;
}

/*
 * Skip frames that don't contain windows we want to save in the Session.
 * Returns NULL when there none.
 */
    static frame_T *
ses_skipframe(fr)
    frame_T     *fr;
{
    frame_T     *frc;

    for (frc = fr; frc != NULL; frc = frc->fr_next)
        if (ses_do_frame(frc))
            break;
    return frc;
}

/*
 * Return TRUE if frame "fr" has a window somewhere that we want to save in
 * the Session.
 */
    static int
ses_do_frame(fr)
    frame_T     *fr;
{
    frame_T     *frc;

    if (fr->fr_layout == FR_LEAF)
        return ses_do_win(fr->fr_win);
    for (frc = fr->fr_child; frc != NULL; frc = frc->fr_next)
        if (ses_do_frame(frc))
            return TRUE;
    return FALSE;
}

/*
 * Return non-zero if window "wp" is to be stored in the Session.
 */
    static int
ses_do_win(wp)
    win_T       *wp;
{
    if (wp->w_buffer->b_fname == NULL
#ifdef FEAT_QUICKFIX
            /* When 'buftype' is "nofile" can't restore the window contents. */
            || bt_nofile(wp->w_buffer)
#endif
       )
        return (ssop_flags & SSOP_BLANK);
    if (wp->w_buffer->b_help)
        return (ssop_flags & SSOP_HELP);
    return TRUE;
}

/*
 * Write commands to "fd" to restore the view of a window.
 * Caller must make sure 'scrolloff' is zero.
 */
    static int
put_view(fd, wp, add_edit, flagp)
    FILE        *fd;
    win_T       *wp;
    int         add_edit;       /* add ":edit" command to view */
    unsigned    *flagp;         /* vop_flags or ssop_flags */
{
    win_T       *save_curwin;
    int         f;
    int         do_cursor;
    int         did_next = FALSE;

    /* Always restore cursor position for ":mksession".  For ":mkview" only
     * when 'viewoptions' contains "cursor". */
    do_cursor = (flagp == &ssop_flags || *flagp & SSOP_CURSOR);

    /*
     * Local argument list.
     */
    if (wp->w_alist == &global_alist)
    {
        if (put_line(fd, "argglobal") == FAIL)
            return FAIL;
    }
    else
    {
        if (ses_arglist(fd, "arglocal", &wp->w_alist->al_ga,
                        flagp == &vop_flags
                        || !(*flagp & SSOP_CURDIR)
                        || wp->w_localdir != NULL, flagp) == FAIL)
            return FAIL;
    }

    /* Only when part of a session: restore the argument index.  Some
     * arguments may have been deleted, check if the index is valid. */
    if (wp->w_arg_idx != 0 && wp->w_arg_idx <= WARGCOUNT(wp)
                                                      && flagp == &ssop_flags)
    {
        if (fprintf(fd, "%ldnext", (long)wp->w_arg_idx) < 0
                || put_eol(fd) == FAIL)
            return FAIL;
        did_next = TRUE;
    }

    /* Edit the file.  Skip this when ":next" already did it. */
    if (add_edit && (!did_next || wp->w_arg_idx_invalid))
    {
        /*
         * Load the file.
         */
        if (wp->w_buffer->b_ffname != NULL
#ifdef FEAT_QUICKFIX
                && !bt_nofile(wp->w_buffer)
#endif
                )
        {
            /*
             * Editing a file in this buffer: use ":edit file".
             * This may have side effects! (e.g., compressed or network file).
             */
            if (fputs("edit ", fd) < 0
                    || ses_fname(fd, wp->w_buffer, flagp) == FAIL)
                return FAIL;
        }
        else
        {
            /* No file in this buffer, just make it empty. */
            if (put_line(fd, "enew") == FAIL)
                return FAIL;
#ifdef FEAT_QUICKFIX
            if (wp->w_buffer->b_ffname != NULL)
            {
                /* The buffer does have a name, but it's not a file name. */
                if (fputs("file ", fd) < 0
                        || ses_fname(fd, wp->w_buffer, flagp) == FAIL)
                    return FAIL;
            }
#endif
            do_cursor = FALSE;
        }
    }

    /*
     * Local mappings and abbreviations.
     */
    if ((*flagp & (SSOP_OPTIONS | SSOP_LOCALOPTIONS))
                                         && makemap(fd, wp->w_buffer) == FAIL)
        return FAIL;

    /*
     * Local options.  Need to go to the window temporarily.
     * Store only local values when using ":mkview" and when ":mksession" is
     * used and 'sessionoptions' doesn't include "options".
     * Some folding options are always stored when "folds" is included,
     * otherwise the folds would not be restored correctly.
     */
    save_curwin = curwin;
    curwin = wp;
    curbuf = curwin->w_buffer;
    if (*flagp & (SSOP_OPTIONS | SSOP_LOCALOPTIONS))
        f = makeset(fd, OPT_LOCAL,
                             flagp == &vop_flags || !(*flagp & SSOP_OPTIONS));
#ifdef FEAT_FOLDING
    else if (*flagp & SSOP_FOLDS)
        f = makefoldset(fd);
#endif
    else
        f = OK;
    curwin = save_curwin;
    curbuf = curwin->w_buffer;
    if (f == FAIL)
        return FAIL;

#ifdef FEAT_FOLDING
    /*
     * Save Folds when 'buftype' is empty and for help files.
     */
    if ((*flagp & SSOP_FOLDS)
            && wp->w_buffer->b_ffname != NULL
# ifdef FEAT_QUICKFIX
            && (*wp->w_buffer->b_p_bt == NUL || wp->w_buffer->b_help)
# endif
            )
    {
        if (put_folds(fd, wp) == FAIL)
            return FAIL;
    }
#endif

    /*
     * Set the cursor after creating folds, since that moves the cursor.
     */
    if (do_cursor)
    {

        /* Restore the cursor line in the file and relatively in the
         * window.  Don't use "G", it changes the jumplist. */
        if (fprintf(fd, "let s:l = %ld - ((%ld * winheight(0) + %ld) / %ld)",
                    (long)wp->w_cursor.lnum,
                    (long)(wp->w_cursor.lnum - wp->w_topline),
                    (long)wp->w_height / 2, (long)wp->w_height) < 0
                || put_eol(fd) == FAIL
                || put_line(fd, "if s:l < 1 | let s:l = 1 | endif") == FAIL
                || put_line(fd, "exe s:l") == FAIL
                || put_line(fd, "normal! zt") == FAIL
                || fprintf(fd, "%ld", (long)wp->w_cursor.lnum) < 0
                || put_eol(fd) == FAIL)
            return FAIL;
        /* Restore the cursor column and left offset when not wrapping. */
        if (wp->w_cursor.col == 0)
        {
            if (put_line(fd, "normal! 0") == FAIL)
                return FAIL;
        }
        else
        {
            if (!wp->w_p_wrap && wp->w_leftcol > 0 && wp->w_width > 0)
            {
                if (fprintf(fd,
                          "let s:c = %ld - ((%ld * winwidth(0) + %ld) / %ld)",
                            (long)wp->w_cursor.col,
                            (long)(wp->w_cursor.col - wp->w_leftcol),
                            (long)wp->w_width / 2, (long)wp->w_width) < 0
                        || put_eol(fd) == FAIL
                        || put_line(fd, "if s:c > 0") == FAIL
                        || fprintf(fd,
                            "  exe 'normal! 0' . s:c . 'lzs' . (%ld - s:c) . 'l'",
                            (long)wp->w_cursor.col) < 0
                        || put_eol(fd) == FAIL
                        || put_line(fd, "else") == FAIL
                        || fprintf(fd, "  normal! 0%dl", wp->w_cursor.col) < 0
                        || put_eol(fd) == FAIL
                        || put_line(fd, "endif") == FAIL)
                    return FAIL;
            }
            else
            {
                if (fprintf(fd, "normal! 0%dl", wp->w_cursor.col) < 0
                        || put_eol(fd) == FAIL)
                    return FAIL;
            }
        }
    }

    /*
     * Local directory.
     */
    if (wp->w_localdir != NULL)
    {
        if (fputs("lcd ", fd) < 0
                || ses_put_fname(fd, wp->w_localdir, flagp) == FAIL
                || put_eol(fd) == FAIL)
            return FAIL;
        did_lcd = TRUE;
    }

    return OK;
}

/*
 * Write an argument list to the session file.
 * Returns FAIL if writing fails.
 */
    static int
ses_arglist(fd, cmd, gap, fullname, flagp)
    FILE        *fd;
    char        *cmd;
    garray_T    *gap;
    int         fullname;       /* TRUE: use full path name */
    unsigned    *flagp;
{
    int         i;
    char_u      buf[MAXPATHL];
    char_u      *s;

    if (gap->ga_len == 0)
        return put_line(fd, "silent! argdel *");
    if (fputs(cmd, fd) < 0)
        return FAIL;
    for (i = 0; i < gap->ga_len; ++i)
    {
        /* NULL file names are skipped (only happens when out of memory). */
        s = alist_name(&((aentry_T *)gap->ga_data)[i]);
        if (s != NULL)
        {
            if (fullname)
            {
                (void)vim_FullName(s, buf, MAXPATHL, FALSE);
                s = buf;
            }
            if (fputs(" ", fd) < 0 || ses_put_fname(fd, s, flagp) == FAIL)
                return FAIL;
        }
    }
    return put_eol(fd);
}

/*
 * Write a buffer name to the session file.
 * Also ends the line.
 * Returns FAIL if writing fails.
 */
    static int
ses_fname(fd, buf, flagp)
    FILE        *fd;
    buf_T       *buf;
    unsigned    *flagp;
{
    char_u      *name;

    /* Use the short file name if the current directory is known at the time
     * the session file will be sourced.
     * Don't do this for ":mkview", we don't know the current directory.
     * Don't do this after ":lcd", we don't keep track of what the current
     * directory is. */
    if (buf->b_sfname != NULL
            && flagp == &ssop_flags
            && (ssop_flags & (SSOP_CURDIR | SSOP_SESDIR))
            && !did_lcd)
        name = buf->b_sfname;
    else
        name = buf->b_ffname;
    if (ses_put_fname(fd, name, flagp) == FAIL || put_eol(fd) == FAIL)
        return FAIL;
    return OK;
}

/*
 * Write a file name to the session file.
 * Takes care of the "slash" option in 'sessionoptions' and escapes special
 * characters.
 * Returns FAIL if writing fails.
 */
    static int
ses_put_fname(fd, name, flagp)
    FILE        *fd;
    char_u      *name;
    unsigned    *flagp;
{
    char_u      *sname;
    int         retval = OK;
    int         c;

    sname = home_replace_save(NULL, name);
    if (sname != NULL)
        name = sname;
    while (*name != NUL)
    {
#ifdef FEAT_MBYTE
        {
            int l;

            if (has_mbyte && (l = (*mb_ptr2len)(name)) > 1)
            {
                /* copy a multibyte char */
                while (--l >= 0)
                {
                    if (putc(*name, fd) != *name)
                        retval = FAIL;
                    ++name;
                }
                continue;
            }
        }
#endif
        c = *name++;
        if (c == '\\' && (*flagp & SSOP_SLASH))
            /* change a backslash to a forward slash */
            c = '/';
        else if ((vim_strchr(escape_chars, c) != NULL
#ifdef BACKSLASH_IN_FILENAME
                    && c != '\\'
#endif
                 ) || c == '#' || c == '%')
        {
            /* escape a special character with a backslash */
            if (putc('\\', fd) != '\\')
                retval = FAIL;
        }
        if (putc(c, fd) != c)
            retval = FAIL;
    }
    vim_free(sname);
    return retval;
}

/*
 * ":loadview [nr]"
 */
    static void
ex_loadview(eap)
    exarg_T     *eap;
{
    char_u      *fname;

    fname = get_view_file(*eap->arg);
    if (fname != NULL)
    {
        do_source(fname, FALSE, DOSO_NONE);
        vim_free(fname);
    }
}

/*
 * Get the name of the view file for the current buffer.
 */
    static char_u *
get_view_file(c)
    int         c;
{
    int         len = 0;
    char_u      *p, *s;
    char_u      *retval;
    char_u      *sname;

    if (curbuf->b_ffname == NULL)
    {
        EMSG(_(e_noname));
        return NULL;
    }
    sname = home_replace_save(NULL, curbuf->b_ffname);
    if (sname == NULL)
        return NULL;

    /*
     * We want a file name without separators, because we're not going to make
     * a directory.
     * "normal" path separator  -> "=+"
     * "="                      -> "=="
     * ":" path separator       -> "=-"
     */
    for (p = sname; *p; ++p)
        if (*p == '=' || vim_ispathsep(*p))
            ++len;
    retval = alloc((unsigned)(STRLEN(sname) + len + STRLEN(p_vdir) + 9));
    if (retval != NULL)
    {
        STRCPY(retval, p_vdir);
        add_pathsep(retval);
        s = retval + STRLEN(retval);
        for (p = sname; *p; ++p)
        {
            if (*p == '=')
            {
                *s++ = '=';
                *s++ = '=';
            }
            else if (vim_ispathsep(*p))
            {
                *s++ = '=';
#if defined(BACKSLASH_IN_FILENAME) || defined(AMIGA) || defined(RISCOS) \
        || defined(VMS)
                if (*p == ':')
                    *s++ = '-';
                else
#endif
                    *s++ = '+';
            }
            else
                *s++ = *p;
        }
        *s++ = '=';
        *s++ = c;
        STRCPY(s, ".vim");
    }

    vim_free(sname);
    return retval;
}

#endif /* FEAT_SESSION */

/*
 * Write end-of-line character(s) for ":mkexrc", ":mkvimrc" and ":mksession".
 * Return FAIL for a write error.
 */
    int
put_eol(fd)
    FILE        *fd;
{
    if (
#ifdef USE_CRNL
            (
# ifdef MKSESSION_NL
             !mksession_nl &&
# endif
             (putc('\r', fd) < 0)) ||
#endif
            (putc('\n', fd) < 0))
        return FAIL;
    return OK;
}

/*
 * Write a line to "fd".
 * Return FAIL for a write error.
 */
    int
put_line(fd, s)
    FILE        *fd;
    char        *s;
{
    if (fputs(s, fd) < 0 || put_eol(fd) == FAIL)
        return FAIL;
    return OK;
}

#ifdef FEAT_VIMINFO
/*
 * ":rviminfo" and ":wviminfo".
 */
    static void
ex_viminfo(eap)
    exarg_T     *eap;
{
    char_u      *save_viminfo;

    save_viminfo = p_viminfo;
    if (*p_viminfo == NUL)
        p_viminfo = (char_u *)"'100";
    if (eap->cmdidx == CMD_rviminfo)
    {
        if (read_viminfo(eap->arg, TRUE, TRUE, eap->forceit) == FAIL)
            EMSG(_("E195: Cannot open viminfo file for reading"));
    }
    else
        write_viminfo(eap->arg, eap->forceit);
    p_viminfo = save_viminfo;
}
#endif

#if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG) || defined(PROTO)
/*
 * Make a dialog message in "buff[IOSIZE]".
 * "format" must contain "%s".
 */
    void
dialog_msg(buff, format, fname)
    char_u      *buff;
    char        *format;
    char_u      *fname;
{
    if (fname == NULL)
        fname = (char_u *)_("Untitled");
    vim_snprintf((char *)buff, IOSIZE, format, fname);
}
#endif

/*
 * ":behave {mswin,xterm}"
 */
    static void
ex_behave(eap)
    exarg_T     *eap;
{
    if (STRCMP(eap->arg, "mswin") == 0)
    {
        set_option_value((char_u *)"selection", 0L, (char_u *)"exclusive", 0);
        set_option_value((char_u *)"selectmode", 0L, (char_u *)"mouse,key", 0);
        set_option_value((char_u *)"mousemodel", 0L, (char_u *)"popup", 0);
        set_option_value((char_u *)"keymodel", 0L,
                                             (char_u *)"startsel,stopsel", 0);
    }
    else if (STRCMP(eap->arg, "xterm") == 0)
    {
        set_option_value((char_u *)"selection", 0L, (char_u *)"inclusive", 0);
        set_option_value((char_u *)"selectmode", 0L, (char_u *)"", 0);
        set_option_value((char_u *)"mousemodel", 0L, (char_u *)"extend", 0);
        set_option_value((char_u *)"keymodel", 0L, (char_u *)"", 0);
    }
    else
        EMSG2(_(e_invarg2), eap->arg);
}

#ifdef FEAT_AUTOCMD
static int filetype_detect = FALSE;
static int filetype_plugin = FALSE;
static int filetype_indent = FALSE;

/*
 * ":filetype [plugin] [indent] {on,off,detect}"
 * on: Load the filetype.vim file to install autocommands for file types.
 * off: Load the ftoff.vim file to remove all autocommands for file types.
 * plugin on: load filetype.vim and ftplugin.vim
 * plugin off: load ftplugof.vim
 * indent on: load filetype.vim and indent.vim
 * indent off: load indoff.vim
 */
    static void
ex_filetype(eap)
    exarg_T     *eap;
{
    char_u      *arg = eap->arg;
    int         plugin = FALSE;
    int         indent = FALSE;

    if (*eap->arg == NUL)
    {
        /* Print current status. */
        smsg((char_u *)"filetype detection:%s  plugin:%s  indent:%s",
                filetype_detect ? "ON" : "OFF",
                filetype_plugin ? (filetype_detect ? "ON" : "(on)") : "OFF",
                filetype_indent ? (filetype_detect ? "ON" : "(on)") : "OFF");
        return;
    }

    /* Accept "plugin" and "indent" in any order. */
    for (;;)
    {
        if (STRNCMP(arg, "plugin", 6) == 0)
        {
            plugin = TRUE;
            arg = skipwhite(arg + 6);
            continue;
        }
        if (STRNCMP(arg, "indent", 6) == 0)
        {
            indent = TRUE;
            arg = skipwhite(arg + 6);
            continue;
        }
        break;
    }
    if (STRCMP(arg, "on") == 0 || STRCMP(arg, "detect") == 0)
    {
        if (*arg == 'o' || !filetype_detect)
        {
            source_runtime((char_u *)FILETYPE_FILE, TRUE);
            filetype_detect = TRUE;
            if (plugin)
            {
                source_runtime((char_u *)FTPLUGIN_FILE, TRUE);
                filetype_plugin = TRUE;
            }
            if (indent)
            {
                source_runtime((char_u *)INDENT_FILE, TRUE);
                filetype_indent = TRUE;
            }
        }
        if (*arg == 'd')
        {
            (void)do_doautocmd((char_u *)"filetypedetect BufRead", TRUE);
            do_modelines(0);
        }
    }
    else if (STRCMP(arg, "off") == 0)
    {
        if (plugin || indent)
        {
            if (plugin)
            {
                source_runtime((char_u *)FTPLUGOF_FILE, TRUE);
                filetype_plugin = FALSE;
            }
            if (indent)
            {
                source_runtime((char_u *)INDOFF_FILE, TRUE);
                filetype_indent = FALSE;
            }
        }
        else
        {
            source_runtime((char_u *)FTOFF_FILE, TRUE);
            filetype_detect = FALSE;
        }
    }
    else
        EMSG2(_(e_invarg2), arg);
}

/*
 * ":setfiletype {name}"
 */
    static void
ex_setfiletype(eap)
    exarg_T     *eap;
{
    if (!did_filetype)
        set_option_value((char_u *)"filetype", 0L, eap->arg, OPT_LOCAL);
}
#endif

/*ARGSUSED*/
    static void
ex_digraphs(eap)
    exarg_T     *eap;
{
#ifdef FEAT_DIGRAPHS
    if (*eap->arg != NUL)
        putdigraph(eap->arg);
    else
        listdigraphs();
#else
    EMSG(_("E196: No digraphs in this version"));
#endif
}

    static void
ex_set(eap)
    exarg_T     *eap;
{
    int         flags = 0;

    if (eap->cmdidx == CMD_setlocal)
        flags = OPT_LOCAL;
    else if (eap->cmdidx == CMD_setglobal)
        flags = OPT_GLOBAL;
#if defined(FEAT_EVAL) && defined(FEAT_AUTOCMD) && defined(FEAT_BROWSE)
    if (cmdmod.browse && flags == 0)
        ex_options(eap);
    else
#endif
        (void)do_set(eap->arg, flags);
}

#ifdef FEAT_SEARCH_EXTRA
/*
 * ":nohlsearch"
 */
/*ARGSUSED*/
    static void
ex_nohlsearch(eap)
    exarg_T     *eap;
{
    no_hlsearch = TRUE;
    redraw_all_later(SOME_VALID);
}

/*
 * ":[N]match {group} {pattern}"
 * Sets nextcmd to the start of the next command, if any.  Also called when
 * skipping commands to find the next command.
 */
    static void
ex_match(eap)
    exarg_T     *eap;
{
    char_u      *p;
    char_u      *end;
    int         c;
    int         mi;

    if (eap->line2 <= 3)
        mi = eap->line2 - 1;
    else
    {
        EMSG(e_invcmd);
        return;
    }

    /* First clear any old pattern. */
    if (!eap->skip)
    {
        vim_free(curwin->w_match[mi].regprog);
        curwin->w_match[mi].regprog = NULL;
        vim_free(curwin->w_match_pat[mi]);
        curwin->w_match_pat[mi] = NULL;
        redraw_later(SOME_VALID);       /* always need a redraw */
    }

    if (ends_excmd(*eap->arg))
        end = eap->arg;
    else if ((STRNICMP(eap->arg, "none", 4) == 0
                && (vim_iswhite(eap->arg[4]) || ends_excmd(eap->arg[4]))))
        end = eap->arg + 4;
    else
    {
        p = skiptowhite(eap->arg);
        if (!eap->skip)
        {
            curwin->w_match_id[mi] = syn_namen2id(eap->arg,
                                                         (int)(p - eap->arg));
            if (curwin->w_match_id[mi] == 0)
            {
                EMSG2(_(e_nogroup), eap->arg);
                return;
            }
        }
        p = skipwhite(p);
        if (*p == NUL)
        {
            /* There must be two arguments. */
            EMSG2(_(e_invarg2), eap->arg);
            return;
        }
        end = skip_regexp(p + 1, *p, TRUE, NULL);
        if (!eap->skip)
        {
            if (*end != NUL && !ends_excmd(*skipwhite(end + 1)))
            {
                eap->errmsg = e_trailing;
                return;
            }
            if (*end != *p)
            {
                EMSG2(_(e_invarg2), p);
                return;
            }

            c = *end;
            *end = NUL;
            curwin->w_match[mi].regprog = vim_regcomp(p + 1, RE_MAGIC);
            if (curwin->w_match[mi].regprog == NULL)
            {
                EMSG2(_(e_invarg2), p);
                *end = c;
                return;
            }
            curwin->w_match_pat[mi] = vim_strsave(p + 1);
            *end = c;
        }
    }
    eap->nextcmd = find_nextcmd(end);
}
#endif

#ifdef FEAT_CRYPT
/*
 * ":X": Get crypt key
 */
/*ARGSUSED*/
    static void
ex_X(eap)
    exarg_T     *eap;
{
    (void)get_crypt_key(TRUE, TRUE);
}
#endif

#ifdef FEAT_FOLDING
    static void
ex_fold(eap)
    exarg_T     *eap;
{
    if (foldManualAllowed(TRUE))
        foldCreate(eap->line1, eap->line2);
}

    static void
ex_foldopen(eap)
    exarg_T     *eap;
{
    opFoldRange(eap->line1, eap->line2, eap->cmdidx == CMD_foldopen,
                                                         eap->forceit, FALSE);
}

    static void
ex_folddo(eap)
    exarg_T     *eap;
{
    linenr_T    lnum;

    /* First set the marks for all lines closed/open. */
    for (lnum = eap->line1; lnum <= eap->line2; ++lnum)
        if (hasFolding(lnum, NULL, NULL) == (eap->cmdidx == CMD_folddoclosed))
            ml_setmarked(lnum);

    /* Execute the command on the marked lines. */
    global_exe(eap->arg);
    ml_clearmarked();      /* clear rest of the marks */
}
#endif