lib/Makefile.am: added lib/skin.h into distribution

[midnight-commander.git] / src / editor / editcmd.c

/* editor high level editing commands

   Copyright (C) 1996, 1997, 1998, 2001, 2002, 2003, 2004, 2005, 2006,
   2007 Free Software Foundation, Inc.

   Authors: 1996, 1997 Paul Sheer

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
   02110-1301, USA.

*/

/** \file
 *  \brief Source: editor high level editing commands
 *  \author Paul Sheer
 *  \date 1996, 1997
 */

/* #define PIPE_BLOCKS_SO_READ_BYTE_BY_BYTE */

#include <config.h>

#include <assert.h>
#include <ctype.h>

#include <stdio.h>
#include <stdarg.h>
#include <sys/types.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <sys/stat.h>
#include <stdlib.h>
#include <fcntl.h>

#include "lib/global.h"
#include "lib/tty/tty.h"
#include "lib/tty/key.h"        /* XCTRL */
#include "lib/mcconfig.h"
#include "lib/skin.h"
#include "lib/strutil.h"        /* utf string functions */

#include "src/history.h"
#include "src/widget.h" /* listbox_new() */
#include "src/layout.h" /* clr_scr() */
#include "src/main.h"   /* mc_home source_codepage */
#include "src/help.h"   /* interactive_display() */
#include "src/wtools.h" /* message() */
#include "src/charsets.h"
#include "src/selcodepage.h"
#include "src/cmddef.h"

#include "lib/vfs/mc-vfs/vfs.h"

#include "src/editor/edit-impl.h"
#include "src/editor/edit.h"
#include "src/editor/editlock.h"
#include "src/editor/edit-widget.h"
#include "src/editor/editcmd_dialogs.h"
#include "src/editor/etags.h"

/* globals: */

/* search and replace: */
int search_create_bookmark = 0;
/* static int search_in_all_charsets = 0; */

/* queries on a save */
int edit_confirm_save = 1;

static int edit_save_cmd (WEdit *edit);
static unsigned char *edit_get_block (WEdit *edit, long start,
                                      long finish, int *l);

static void
edit_search_cmd_search_create_bookmark(WEdit * edit)
{
    int found = 0, books = 0;
    long l = 0, l_last = -1;
    long q = 0;
    gsize len = 0;

    search_create_bookmark = 0;
    book_mark_flush (edit, -1);

    for (;;) {
        if (!mc_search_run(edit->search, (void *) edit, q, edit->last_byte, &len))
            break;
        if (found == 0)
            edit->search_start = edit->search->normal_offset;
        found++;
        l += edit_count_lines (edit, q, edit->search->normal_offset);
        if (l != l_last) {
            book_mark_insert (edit, l, BOOK_MARK_FOUND_COLOR);
            books++;
        }
        l_last = l;
        q = edit->search->normal_offset + 1;
    }

    if (found == 0) {
        edit_error_dialog (_ ("Search"), _ (" Search string not found "));
    } else {
        edit_cursor_move (edit, edit->search_start - edit->curs1);
        edit_scroll_screen_over_cursor (edit);
    }
}

static int
edit_search_cmd_callback(const void *user_data, gsize char_offset)
{
    return edit_get_byte ((WEdit * )user_data, (long) char_offset);
}

void edit_help_cmd (WEdit * edit)
{
    interactive_display (NULL, "[Internal File Editor]");
    edit->force |= REDRAW_COMPLETELY;
}

void
edit_refresh_cmd (WEdit * edit)
{
#ifdef HAVE_SLANG
    int color;

    edit_get_syntax_color (edit, -1, &color);
    tty_touch_screen ();
    mc_refresh ();
#else
    clr_scr ();
    repaint_screen ();
#endif /* !HAVE_SLANG */
    tty_keypad (TRUE);
}

/*  If 0 (quick save) then  a) create/truncate <filename> file,
                            b) save to <filename>;
    if 1 (safe save) then   a) save to <tempnam>,
                            b) rename <tempnam> to <filename>;
    if 2 (do backups) then  a) save to <tempnam>,
                            b) rename <filename> to <filename.backup_ext>,
                            c) rename <tempnam> to <filename>. */

/* returns 0 on error, -1 on abort */
static int
edit_save_file (WEdit *edit, const char *filename)
{
    char *p;
    gchar *tmp;
    long filelen = 0;
    char *savename = 0;
    gchar *real_filename;
    int this_save_mode, fd = -1;

    if (!filename)
        return 0;
    if (!*filename)
        return 0;

    if (*filename != PATH_SEP && edit->dir) {
        real_filename = concat_dir_and_file (edit->dir, filename);
    } else {
        real_filename = g_strdup(filename);
    }

    this_save_mode = option_save_mode;
    if (this_save_mode != EDIT_QUICK_SAVE) {
        if (!vfs_file_is_local (real_filename) ||
            (fd = mc_open (real_filename, O_RDONLY | O_BINARY)) == -1) {
            /*
             * The file does not exists yet, so no safe save or
             * backup are necessary.
             */
            this_save_mode = EDIT_QUICK_SAVE;
        }
        if (fd != -1)
            mc_close (fd);
    }

    if (this_save_mode == EDIT_QUICK_SAVE &&
        !edit->skip_detach_prompt) {
        int rv;
        struct stat sb;

        rv = mc_stat (real_filename, &sb);
        if (rv == 0 && sb.st_nlink > 1) {
            rv = edit_query_dialog3 (_("Warning"),
                                     _(" File has hard-links. Detach before saving? "),
                                     _("&Yes"), _("&No"), _("&Cancel"));
            switch (rv) {
            case 0:
                this_save_mode = EDIT_SAFE_SAVE;
                /* fallthrough */
            case 1:
                edit->skip_detach_prompt = 1;
                break;
            default:
                g_free(real_filename);
                return -1;
            }
        }

        /* Prevent overwriting changes from other editor sessions. */
        if (rv == 0 && edit->stat1.st_mtime != 0 && edit->stat1.st_mtime != sb.st_mtime) {

            /* The default action is "Cancel". */
            query_set_sel(1);

            rv = edit_query_dialog2 (
                _("Warning"),
                _("The file has been modified in the meantime. Save anyway?"),
                _("&Yes"),
                _("&Cancel"));
            if (rv != 0){
                g_free(real_filename);
                return -1;
            }
        }
    }

    if (this_save_mode != EDIT_QUICK_SAVE) {
        char *savedir, *saveprefix;
        const char *slashpos;
        slashpos = strrchr (real_filename, PATH_SEP);
        if (slashpos) {
            savedir = g_strdup (real_filename);
            savedir[slashpos - real_filename + 1] = '\0';
        } else
            savedir = g_strdup (".");
        saveprefix = concat_dir_and_file (savedir, "cooledit");
        g_free (savedir);
        fd = mc_mkstemps (&savename, saveprefix, NULL);
        g_free (saveprefix);
        if (!savename){
            g_free(real_filename);
            return 0;
        }
        /* FIXME:
         * Close for now because mc_mkstemps use pure open system call
         * to create temporary file and it needs to be reopened by
         * VFS-aware mc_open().
         */
        close (fd);
    } else
        savename = g_strdup (real_filename);

    mc_chown (savename, edit->stat1.st_uid, edit->stat1.st_gid);
    mc_chmod (savename, edit->stat1.st_mode);

    if ((fd =
         mc_open (savename, O_CREAT | O_WRONLY | O_TRUNC | O_BINARY,
                  edit->stat1.st_mode)) == -1)
        goto error_save;

/* pipe save */
    if ((p = edit_get_write_filter (savename, real_filename))) {
        FILE *file;

        mc_close (fd);
        file = (FILE *) popen (p, "w");

        if (file) {
            filelen = edit_write_stream (edit, file);
#if 1
            pclose (file);
#else
            if (pclose (file) != 0) {
                tmp = g_strconcat (_(" Error writing to pipe: "),
                                            p, " ", (char *) NULL);
                edit_error_dialog (_("Error"), tmp);
                g_free(tmp);
                g_free (p);
                goto error_save;
            }
#endif
        } else {
            tmp = g_strconcat (_(" Cannot open pipe for writing: "),
                                        p, " ", (char *) NULL);

            edit_error_dialog (_("Error"),
                               get_sys_error (tmp));
            g_free (p);
            g_free(tmp);
            goto error_save;
        }
        g_free (p);
    } else if (edit->lb == LB_ASIS) { /* do not change line breaks */
        long buf;
        buf = 0;
        filelen = edit->last_byte;
        while (buf <= (edit->curs1 >> S_EDIT_BUF_SIZE) - 1) {
            if (mc_write (fd, (char *) edit->buffers1[buf], EDIT_BUF_SIZE)
                != EDIT_BUF_SIZE) {
                mc_close (fd);
                goto error_save;
            }
            buf++;
        }
        if (mc_write
            (fd, (char *) edit->buffers1[buf],
             edit->curs1 & M_EDIT_BUF_SIZE) !=
            (edit->curs1 & M_EDIT_BUF_SIZE)) {
            filelen = -1;
        } else if (edit->curs2) {
            edit->curs2--;
            buf = (edit->curs2 >> S_EDIT_BUF_SIZE);
            if (mc_write
                (fd,
                 (char *) edit->buffers2[buf] + EDIT_BUF_SIZE -
                 (edit->curs2 & M_EDIT_BUF_SIZE) - 1,
                 1 + (edit->curs2 & M_EDIT_BUF_SIZE)) !=
                1 + (edit->curs2 & M_EDIT_BUF_SIZE)) {
                filelen = -1;
            } else {
                while (--buf >= 0) {
                    if (mc_write
                        (fd, (char *) edit->buffers2[buf],
                         EDIT_BUF_SIZE) != EDIT_BUF_SIZE) {
                        filelen = -1;
                        break;
                    }
                }
            }
            edit->curs2++;
        }
        if (mc_close (fd))
            goto error_save;

        /* Update the file information, especially the mtime. */
        if (mc_stat (savename, &edit->stat1) == -1)
            goto error_save;
    } else { /* change line breaks */
        FILE *file;

        mc_close (fd);

        file = (FILE *) fopen (savename, "w");

        if (file) {
            filelen = edit_write_stream (edit, file);
            fclose (file);
        } else {
            char *msg;

            msg = g_strdup_printf (_(" Cannot open file for writing: %s "), savename);
            edit_error_dialog (_("Error"), msg);
            g_free (msg);
            goto error_save;
        }
    }

    if (filelen != edit->last_byte)
        goto error_save;

    if (this_save_mode == EDIT_DO_BACKUP) {
        assert (option_backup_ext != NULL);
        tmp = g_strconcat (real_filename, option_backup_ext, (char *) NULL);
        if (mc_rename (real_filename, tmp) == -1){
            g_free(tmp);
            goto error_save;
        }
    }

    if (this_save_mode != EDIT_QUICK_SAVE)
        if (mc_rename (savename, real_filename) == -1)
            goto error_save;
    g_free (savename);
    g_free(real_filename);
    return 1;
  error_save:
/*  FIXME: Is this safe ?
 *  if (this_save_mode != EDIT_QUICK_SAVE)
 *      mc_unlink (savename);
 */
    g_free(real_filename);
    g_free (savename);
    return 0;
}

void
menu_save_mode_cmd (void)
{
    /* diaog sizes */
    const int DLG_X = 38;
    const int DLG_Y = 13;

    char *str_result;

    const char *str[] =
    {
        N_("&Quick save"),
        N_("&Safe save"),
        N_("&Do backups with following extension:")
    };

    QuickWidget widgets[] =
    {
        /* 0 */
        QUICK_BUTTON   (18, DLG_X, DLG_Y - 3, DLG_Y, N_("&Cancel"), B_CANCEL, NULL),
        /* 1 */
        QUICK_BUTTON   ( 6, DLG_X, DLG_Y - 3, DLG_Y, N_("&OK"),     B_ENTER,  NULL),
        /* 2 */
        QUICK_CHECKBOX ( 4, DLG_X, 8, DLG_Y, N_("Check &POSIX new line"), &option_check_nl_at_eof),
        /* 3 */
        QUICK_INPUT    ( 8, DLG_X, 6, DLG_Y, option_backup_ext, 9, 0, "edit-backup-ext", &str_result),
        /* 4 */
        QUICK_RADIO    ( 4, DLG_X, 3, DLG_Y, 3, str, &option_save_mode),
        QUICK_END
    };

    QuickDialog dialog =
    {
        DLG_X, DLG_Y, -1, -1, N_(" Edit Save Mode "),
        "[Edit Save Mode]", widgets, FALSE
    };

    size_t i;
    size_t maxlen = 0;
    size_t w0, w1, b_len, w3;

    assert (option_backup_ext != NULL);

    /* OK/Cancel buttons */
    w0 = str_term_width1 (_(widgets[0].u.button.text)) + 3;
    w1 = str_term_width1 (_(widgets[1].u.button.text)) + 5; /* default button */
    b_len = w0 + w1 + 3;

    maxlen = max (b_len, (size_t) str_term_width1 (_(dialog.title)) + 2);

    w3 = 0;
    for (i = 0; i < 3; i++) {
#ifdef ENABLE_NLS
        str[i] = _(str[i]);
#endif
        w3 = max (w3, (size_t) str_term_width1 (str[i]));
    }

    maxlen = max (maxlen, w3 + 4);

    dialog.xlen = min ((size_t) COLS, maxlen + 8);

    widgets[3].u.input.len = w3;
    widgets[1].relative_x = (dialog.xlen - b_len)/2;
    widgets[0].relative_x = widgets[1].relative_x + w0 + 2;

    for (i = 0; i < sizeof (widgets)/sizeof (widgets[0]); i++)
        widgets[i].x_divisions = dialog.xlen;

    if (quick_dialog (&dialog) != B_CANCEL) {
        g_free (option_backup_ext);
        option_backup_ext = str_result;
    }
}

void
edit_set_filename (WEdit *edit, const char *f)
{
    g_free (edit->filename);
    if (!f)
        f = "";
    edit->filename = g_strdup (f);
    if (edit->dir == NULL && *f != PATH_SEP)
#ifdef ENABLE_VFS
        edit->dir = g_strdup (vfs_get_current_dir ());
#else /* ENABLE_VFS */
        edit->dir = g_get_current_dir ();
#endif /* ENABLE_VFS */
}

static gboolean
edit_check_newline (WEdit *edit)
{
    return !(option_check_nl_at_eof && edit->last_byte > 0
        && edit_get_byte (edit, edit->last_byte - 1) != '\n'
        && edit_query_dialog2 (_("Warning"),
                               _("The file you are saving is not finished with a newline"),
                               _("C&ontinue"), _("&Cancel")));
}

static char *
edit_get_save_file_as (WEdit *edit)
{
#define DLG_WIDTH 64
#define DLG_HEIGHT 14

    static LineBreaks cur_lb = LB_ASIS;

    char *filename = edit->filename;

    const char *lb_names[LB_NAMES] =
    {
        N_("&Do not change"),
        N_("&Unix format (LF)"),
        N_("&Windows/DOS format (CR LF)"),
        N_("&Macintosh format (CR)")
    };

    QuickWidget quick_widgets[] =
    {
        QUICK_BUTTON (6, 10, DLG_HEIGHT - 3, DLG_HEIGHT, N_("&Cancel"), B_CANCEL, NULL),
        QUICK_BUTTON (2, 10, DLG_HEIGHT - 3, DLG_HEIGHT, N_("&OK"), B_ENTER,  NULL),
        QUICK_RADIO (5, DLG_WIDTH, DLG_HEIGHT - 8, DLG_HEIGHT, LB_NAMES, lb_names, (int *) &cur_lb),
        QUICK_LABEL (3, DLG_WIDTH, DLG_HEIGHT - 9, DLG_HEIGHT, N_("Change line breaks to:")),
        QUICK_INPUT (3, DLG_WIDTH, DLG_HEIGHT - 11, DLG_HEIGHT, filename, DLG_WIDTH - 6, 0, "save-as", &filename),
        QUICK_LABEL (2, DLG_WIDTH, DLG_HEIGHT - 12, DLG_HEIGHT, N_(" Enter file name: ")),
        QUICK_END
    };

    QuickDialog Quick_options =
    {
        DLG_WIDTH, DLG_HEIGHT, -1, -1,
        N_(" Save As "), "[Save File As]",
        quick_widgets, FALSE
    };

    if (quick_dialog (&Quick_options) != B_CANCEL) {
       edit->lb = cur_lb;
       return filename;
    }

    return NULL;

#undef DLG_WIDTH
#undef DLG_HEIGHT
}

/* Here we want to warn the users of overwriting an existing file,
   but only if they have made a change to the filename */
/* returns 1 on success */
int
edit_save_as_cmd (WEdit *edit)
{
    /* This heads the 'Save As' dialog box */
    char *exp;
    int save_lock = 0;
    int different_filename = 0;

    if (!edit_check_newline (edit))
        return 0;

    exp = edit_get_save_file_as (edit);
    edit_push_action (edit, KEY_PRESS + edit->start_display);

    if (exp) {
        if (!*exp) {
            g_free (exp);
            edit->force |= REDRAW_COMPLETELY;
            return 0;
        } else {
            int rv;
            if (strcmp (edit->filename, exp)) {
                int file;
                different_filename = 1;
                if ((file = mc_open (exp, O_RDONLY | O_BINARY)) != -1) {
                    /* the file exists */
                    mc_close (file);
                    /* Overwrite the current file or cancel the operation */
                    if (edit_query_dialog2
                        (_("Warning"),
                         _(" A file already exists with this name. "),
                         _("&Overwrite"), _("&Cancel"))) {
                        edit->force |= REDRAW_COMPLETELY;
                        g_free (exp);
                        return 0;
                    }
                } else {
                    edit->stat1.st_mode |= S_IWUSR;
                }
                save_lock = edit_lock_file (exp);
            } else {
                /* filenames equal, check if already locked */
                if (!edit->locked && !edit->delete_file)
                    save_lock = edit_lock_file (exp);
            }

            if (different_filename)
            {
                /*
                 * Allow user to write into saved (under another name) file
                 * even if original file had r/o user permissions.
                 */
                edit->stat1.st_mode |= S_IWRITE;
            }

            rv = edit_save_file (edit, exp);
            switch (rv) {
            case 1:
                /* Succesful, so unlock both files */
                if (different_filename) {
                    if (save_lock)
                        edit_unlock_file (exp);
                    if (edit->locked)
                        edit->locked = edit_unlock_file (edit->filename);
                } else {
                    if (edit->locked || save_lock)
                        edit->locked = edit_unlock_file (edit->filename);
                }

                edit_set_filename (edit, exp);
                if (edit->lb != LB_ASIS)
                   edit_reload(edit, exp);
                g_free (exp);
                edit->modified = 0;
                edit->delete_file = 0;
                if (different_filename)
                    edit_load_syntax (edit, NULL, option_syntax_type);
                edit->force |= REDRAW_COMPLETELY;
                return 1;
            default:
                edit_error_dialog (_(" Save As "),
                                   get_sys_error (_
                                                  (" Cannot save file. ")));
                /* fallthrough */
            case -1:
                /* Failed, so maintain modify (not save) lock */
                if (save_lock)
                    edit_unlock_file (exp);
                g_free (exp);
                edit->force |= REDRAW_COMPLETELY;
                return 0;
            }
        }
    }
    edit->force |= REDRAW_COMPLETELY;
    return 0;
}

/* {{{ Macro stuff starts here */

/* creates a macro file if it doesn't exist */
static FILE *edit_open_macro_file (const char *r)
{
    gchar *filename;
    FILE *fd;
    int file;
    filename = concat_dir_and_file (home_dir, EDIT_MACRO_FILE);
    if ((file = open (filename, O_CREAT | O_RDWR, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH)) == -1){
        g_free(filename);
        return 0;
    }
    close (file);
    fd = fopen (filename, r);
    g_free(filename);
    return fd;
}

#define MAX_MACROS 1024
static int saved_macro[MAX_MACROS + 1];
static int saved_macros_loaded = 0;

/*
   This is just to stop the macro file be loaded over and over for keys
   that aren't defined to anything. On slow systems this could be annoying.
 */
static int
macro_exists (int k)
{
    int i;
    for (i = 0; i < MAX_MACROS && saved_macro[i]; i++)
        if (saved_macro[i] == k)
            return i;
    return -1;
}

/* returns 1 on error */
static int
edit_delete_macro (WEdit * edit, int k)
{
    gchar *tmp, *tmp2;
    struct macro macro[MAX_MACRO_LENGTH];
    FILE *f, *g;
    int s, i, n, j = 0;

    (void) edit;

    if (saved_macros_loaded)
        if ((j = macro_exists (k)) < 0)
            return 0;
    tmp = concat_dir_and_file (home_dir, EDIT_TEMP_FILE);
    g = fopen (tmp , "w");
    g_free(tmp);
    if (!g) {
        edit_error_dialog (_(" Delete macro "),
                 get_sys_error (_(" Cannot open temp file ")));
        return 1;
    }
    f = edit_open_macro_file ("r");
    if (!f) {
        edit_error_dialog (_(" Delete macro "),
                get_sys_error (_(" Cannot open macro file ")));
        fclose (g);
        return 1;
    }
    for (;;) {
        n = fscanf (f, ("key '%d 0': "), &s);
        if (!n || n == EOF)
            break;
        n = 0;
        while (fscanf (f, "%lu %d, ", &macro[n].command, &macro[n].ch))
            n++;
        fscanf (f, ";\n");
        if (s != k) {
            fprintf (g, ("key '%d 0': "), s);
            for (i = 0; i < n; i++)
                fprintf (g, "%lu %d, ", macro[i].command, macro[i].ch);
            fprintf (g, ";\n");
        }
    }
    fclose (f);
    fclose (g);
    tmp = concat_dir_and_file (home_dir, EDIT_TEMP_FILE);
    tmp2 = concat_dir_and_file (home_dir, EDIT_MACRO_FILE);
    if (rename ( tmp, tmp2) == -1) {
        edit_error_dialog (_(" Delete macro "),
           get_sys_error (_(" Cannot overwrite macro file ")));
        g_free(tmp);
        g_free(tmp2);
        return 1;
    }
    g_free(tmp);
    g_free(tmp2);

    if (saved_macros_loaded)
        memmove (saved_macro + j, saved_macro + j + 1, sizeof (int) * (MAX_MACROS - j - 1));
    return 0;
}

/* returns 0 on error */
int edit_save_macro_cmd (WEdit * edit, struct macro macro[], int n)
{
    FILE *f;
    int s, i;

    edit_push_action (edit, KEY_PRESS + edit->start_display);
    s = editcmd_dialog_raw_key_query (_(" Save macro "),
        _(" Press the macro's new hotkey: "), 1);
    edit->force |= REDRAW_COMPLETELY;
    if (s) {
        if (edit_delete_macro (edit, s))
            return 0;
        f = edit_open_macro_file ("a+");
        if (f) {
            fprintf (f, ("key '%d 0': "), s);
            for (i = 0; i < n; i++)
                fprintf (f, "%lu %d, ", macro[i].command, macro[i].ch);
            fprintf (f, ";\n");
            fclose (f);
            if (saved_macros_loaded) {
                for (i = 0; i < MAX_MACROS && saved_macro[i]; i++);
                saved_macro[i] = s;
            }
            return 1;
        } else
            edit_error_dialog (_(" Save macro "), get_sys_error (_(" Cannot open macro file ")));
    }
    return 0;
}

void
edit_delete_macro_cmd (WEdit * edit)
{
    int command;

    command = editcmd_dialog_raw_key_query (_ (" Delete macro "),
                                  _ (" Press macro hotkey: "), 1);

    if (command != 0)
        edit_delete_macro (edit, command);
}

/* return 0 on error */
int edit_load_macro_cmd (WEdit * edit, struct macro macro[], int *n, int k)
{
    FILE *f;
    int s, i = 0, found = 0;

    (void) edit;

    if (saved_macros_loaded)
        if (macro_exists (k) < 0)
            return 0;

    if ((f = edit_open_macro_file ("r"))) {
        struct macro dummy;
        do {
            int u;
            u = fscanf (f, ("key '%d 0': "), &s);
            if (!u || u == EOF)
                break;
            if (!saved_macros_loaded)
                saved_macro[i++] = s;
            if (!found) {
                *n = 0;
                while (*n < MAX_MACRO_LENGTH && 2 == fscanf (f, "%lu %d, ", &macro[*n].command, &macro[*n].ch))
                    (*n)++;
            } else {
                while (2 == fscanf (f, "%lu %d, ", &dummy.command, &dummy.ch));
            }
            fscanf (f, ";\n");
            if (s == k)
                found = 1;
        } while (!found || !saved_macros_loaded);
        if (!saved_macros_loaded) {
            saved_macro[i] = 0;
            saved_macros_loaded = 1;
        }
        fclose (f);
        return found;
    } else
        edit_error_dialog (_(" Load macro "),
                get_sys_error (_(" Cannot open macro file ")));
    return 0;
}

/* }}} Macro stuff starts here */

/* returns 1 on success */
int edit_save_confirm_cmd (WEdit * edit)
{
    gchar *f = NULL;

    if (!edit_check_newline (edit))
        return 0;

    if (edit_confirm_save) {
        f = g_strconcat (_(" Confirm save file? : "), edit->filename, " ", (char *) NULL);
        if (edit_query_dialog2 (_(" Save file "), f, _("&Save"), _("&Cancel"))){
            g_free(f);
            return 0;
        }
        g_free(f);
    }
    return edit_save_cmd (edit);
}


/* returns 1 on success */
static int
edit_save_cmd (WEdit *edit)
{
    int res, save_lock = 0;

    if (!edit->locked && !edit->delete_file)
        save_lock = edit_lock_file (edit->filename);
    res = edit_save_file (edit, edit->filename);

    /* Maintain modify (not save) lock on failure */
    if ((res > 0 && edit->locked) || save_lock)
        edit->locked = edit_unlock_file (edit->filename);

    /* On failure try 'save as', it does locking on its own */
    if (!res)
        return edit_save_as_cmd (edit);
    edit->force |= REDRAW_COMPLETELY;
    if (res > 0) {
        edit->delete_file = 0;
        edit->modified = 0;
    }

    return 1;
}


/* returns 1 on success */
int edit_new_cmd (WEdit * edit)
{
    if (edit->modified) {
        if (edit_query_dialog2 (_ ("Warning"), _ (" Current text was modified without a file save. \n Continue discards these changes. "), _ ("C&ontinue"), _ ("&Cancel"))) {
            edit->force |= REDRAW_COMPLETELY;
            return 0;
        }
    }
    edit->force |= REDRAW_COMPLETELY;

    return edit_renew (edit);   /* if this gives an error, something has really screwed up */
}

/* returns 1 on error */
static int
edit_load_file_from_filename (WEdit * edit, char *exp)
{
    int prev_locked = edit->locked;
    char *prev_filename = g_strdup (edit->filename);

    if (!edit_reload (edit, exp)) {
        g_free (prev_filename);
        return 1;
    }

    if (prev_locked)
        edit_unlock_file (prev_filename);
    g_free (prev_filename);
    return 0;
}

static void
edit_load_syntax_file (WEdit * edit)
{
    char *extdir;
    int dir = 0;

    if (geteuid () == 0) {
        dir = query_dialog (_("Syntax file edit"),
                            _(" Which syntax file you want to edit? "), D_NORMAL, 2,
                            _("&User"), _("&System Wide"));
    }

    extdir = concat_dir_and_file (mc_home, "syntax" PATH_SEP_STR "Syntax");
    if (!exist_file(extdir)) {
        g_free (extdir);
        extdir = concat_dir_and_file (mc_home_alt, "syntax" PATH_SEP_STR "Syntax");
    }

    if (dir == 0) {
        char *buffer;

        buffer = concat_dir_and_file (home_dir, EDIT_SYNTAX_FILE);
        check_for_default (extdir, buffer);
        edit_load_file_from_filename (edit, buffer);
        g_free (buffer);
    } else if (dir == 1)
        edit_load_file_from_filename (edit, extdir);

    g_free (extdir);
}

static void
edit_load_menu_file (WEdit * edit)
{
    char *buffer;
    char *menufile;
    int dir = 0;

    dir = query_dialog (
        _(" Menu edit "),
        _(" Which menu file do you want to edit? "), D_NORMAL,
        geteuid() ? 2 : 3, _("&Local"), _("&User"), _("&System Wide")
    );

    menufile = concat_dir_and_file (mc_home, EDIT_GLOBAL_MENU);

    if (!exist_file (menufile)) {
        g_free (menufile);
        menufile = concat_dir_and_file (mc_home_alt, EDIT_GLOBAL_MENU);
    }

    switch (dir) {
        case 0:
            buffer = g_strdup (EDIT_LOCAL_MENU);
            check_for_default (menufile, buffer);
            chmod (buffer, 0600);
            break;

        case 1:
            buffer = concat_dir_and_file (home_dir, EDIT_HOME_MENU);
            check_for_default (menufile, buffer);
            break;
        
        case 2:
            buffer = concat_dir_and_file (mc_home, EDIT_GLOBAL_MENU);
            if (!exist_file (buffer)) {
                g_free (buffer);
                buffer = concat_dir_and_file (mc_home_alt, EDIT_GLOBAL_MENU);
            }
            break;

        default:
            g_free (menufile);
            return;
    }

    edit_load_file_from_filename (edit, buffer);

    g_free (buffer);
    g_free (menufile);
}

int
edit_load_cmd (WEdit *edit, edit_current_file_t what)
{
    char *exp;

    if (edit->modified
        && (edit_query_dialog2
            (_("Warning"),
             _(" Current text was modified without a file save. \n"
               " Continue discards these changes. "),
             _("C&ontinue"), _("&Cancel")) == 1)) {
            edit->force |= REDRAW_COMPLETELY;
            return 0;
        }

    switch (what) {
    case EDIT_FILE_COMMON:
        exp = input_expand_dialog (_(" Load "), _(" Enter file name: "),
                                    MC_HISTORY_EDIT_LOAD, edit->filename);

        if (exp) {
            if (*exp)
                edit_load_file_from_filename (edit, exp);
            g_free (exp);
        }
        break;

    case EDIT_FILE_SYNTAX:
        edit_load_syntax_file (edit);
        break;

    case EDIT_FILE_MENU:
        edit_load_menu_file (edit);
        break;

    default:
        break;
    }

    edit->force |= REDRAW_COMPLETELY;
    return 0;
}

/*
   if mark2 is -1 then marking is from mark1 to the cursor.
   Otherwise its between the markers. This handles this.
   Returns 1 if no text is marked.
 */
int eval_marks (WEdit * edit, long *start_mark, long *end_mark)
{
    if (edit->mark1 != edit->mark2) {
        long start_bol, start_eol;
        long end_bol, end_eol;
        long col1, col2;
        long diff1, diff2;
        if (edit->mark2 >= 0) {
            *start_mark = min (edit->mark1, edit->mark2);
            *end_mark = max (edit->mark1, edit->mark2);
        } else {
            *start_mark = min (edit->mark1, edit->curs1);
            *end_mark = max (edit->mark1, edit->curs1);
            edit->column2 = edit->curs_col + edit->over_col;
        }
        if (column_highlighting
            && (((edit->mark1 > edit->curs1) && (edit->column1 < edit->column2))
            || ((edit->mark1 < edit->curs1) && (edit->column1 > edit->column2)))) {

            start_bol = edit_bol (edit, *start_mark);
            start_eol = edit_eol (edit, start_bol - 1) + 1;
            end_bol = edit_bol (edit, *end_mark);
            end_eol = edit_eol (edit, *end_mark);
            col1 = min (edit->column1, edit->column2);
            col2 = max (edit->column1, edit->column2);

            diff1 = edit_move_forward3 (edit, start_bol, col2, 0) - edit_move_forward3 (edit, start_bol, col1, 0);
            diff2 = edit_move_forward3 (edit, end_bol, col2, 0) - edit_move_forward3 (edit, end_bol, col1, 0);

            *start_mark -= diff1;
            *end_mark += diff2;
            *start_mark = max (*start_mark, start_eol);
            *end_mark = min (*end_mark, end_eol);
        }
        return 0;
    } else {
        *start_mark = *end_mark = 0;
        edit->column2 = edit->column1 = 0;
        return 1;
    }
}

#define space_width 1

void
edit_insert_column_of_text (WEdit * edit, unsigned char *data, int size, int width)
{
    long cursor;
    int i, col;
    cursor = edit->curs1;
    col = edit_get_col (edit);
    for (i = 0; i < size; i++) {
        if (data[i] == '\n') {  /* fill in and move to next line */
            int l;
            long p;
            if (edit_get_byte (edit, edit->curs1) != '\n') {
                l = width - (edit_get_col (edit) - col);
                while (l > 0) {
                    edit_insert (edit, ' ');
                    l -= space_width;
                }
            }
            for (p = edit->curs1;; p++) {
                if (p == edit->last_byte) {
                    edit_cursor_move (edit, edit->last_byte - edit->curs1);
                    edit_insert_ahead (edit, '\n');
                    p++;
                    break;
                }
                if (edit_get_byte (edit, p) == '\n') {
                    p++;
                    break;
                }
            }
            edit_cursor_move (edit, edit_move_forward3 (edit, p, col, 0) - edit->curs1);
            l = col - edit_get_col (edit);
            while (l >= space_width) {
                edit_insert (edit, ' ');
                l -= space_width;
            }
            continue;
        }
        edit_insert (edit, data[i]);
    }
    edit_cursor_move (edit, cursor - edit->curs1);
}

#define TEMP_BUF_LEN 1024

int
edit_insert_column_of_text_from_file (WEdit * edit, int file)
{
    long cursor;
    int i, col;
    int blocklen = -1, width;
    unsigned char *data;
    cursor = edit->curs1;
    col = edit_get_col (edit);
    data = g_malloc0 (TEMP_BUF_LEN);
    while ((blocklen = mc_read (file, (char *) data, TEMP_BUF_LEN)) > 0) {
        for (width = 0; width < blocklen; width++) {
            if (data[width] == '\n')
                break;
        }
        for (i = 0; i < blocklen; i++) {
            if (data[i] == '\n') {      /* fill in and move to next line */
                int l;
                long p;
                if (edit_get_byte (edit, edit->curs1) != '\n') {
                    l = width - (edit_get_col (edit) - col);
                    while (l > 0) {
                        edit_insert (edit, ' ');
                        l -= space_width;
                    }
                }
                for (p = edit->curs1;; p++) {
                    if (p == edit->last_byte) {
                        edit_cursor_move (edit, edit->last_byte - edit->curs1);
                        edit_insert_ahead (edit, '\n');
                        p++;
                        break;
                    }
                    if (edit_get_byte (edit, p) == '\n') {
                        p++;
                        break;
                    }
                }
                edit_cursor_move (edit, edit_move_forward3 (edit, p, col, 0) - edit->curs1);
                l = col - edit_get_col (edit);
                while (l >= space_width) {
                    edit_insert (edit, ' ');
                    l -= space_width;
                }
                continue;
            }
            edit_insert (edit, data[i]);
        }
    }
    edit_cursor_move (edit, cursor - edit->curs1);
    g_free(data);
    edit->force |= REDRAW_PAGE;
    return blocklen;
}

void
edit_block_copy_cmd (WEdit *edit)
{
    long start_mark, end_mark, current = edit->curs1;
    int size;
    unsigned char *copy_buf;

    edit_update_curs_col (edit);
    if (eval_marks (edit, &start_mark, &end_mark))
        return;

    copy_buf = edit_get_block (edit, start_mark, end_mark, &size);

    /* all that gets pushed are deletes hence little space is used on the stack */

    edit_push_markers (edit);

    if (column_highlighting) {
        edit_insert_column_of_text (edit, copy_buf, size,
                                    abs (edit->column2 - edit->column1));
    } else {
        while (size--)
            edit_insert_ahead (edit, copy_buf[size]);
    }

    g_free (copy_buf);
    edit_scroll_screen_over_cursor (edit);

    if (column_highlighting) {
        edit_set_markers (edit, 0, 0, 0, 0);
        edit_push_action (edit, COLUMN_ON);
        column_highlighting = 0;
    } else if (start_mark < current && end_mark > current)
        edit_set_markers (edit, start_mark,
                          end_mark + end_mark - start_mark, 0, 0);

    edit->force |= REDRAW_PAGE;
}


void
edit_block_move_cmd (WEdit *edit)
{
    long count;
    long current;
    unsigned char *copy_buf;
    long start_mark, end_mark;
    int deleted = 0;
    int x = 0;

    if (eval_marks (edit, &start_mark, &end_mark))
        return;
    if (column_highlighting) {
        edit_update_curs_col (edit);
        x = edit->curs_col;
        if (start_mark <= edit->curs1 && end_mark >= edit->curs1)
            if ((x > edit->column1 && x < edit->column2)
                || (x > edit->column2 && x < edit->column1))
                return;
    } else if (start_mark <= edit->curs1 && end_mark >= edit->curs1)
        return;

    if ((end_mark - start_mark) > option_max_undo / 2)
        if (edit_query_dialog2
            (_("Warning"),
             _
             (" Block is large, you may not be able to undo this action. "),
             _("C&ontinue"), _("&Cancel")))
            return;

    edit_push_markers (edit);
    current = edit->curs1;
    if (column_highlighting) {
        long line;
        int size, c1, c2;
        line = edit->curs_line;
        if (edit->mark2 < 0)
            edit_mark_cmd (edit, 0);
        c1 = min (edit->column1, edit->column2);
        c2 = max (edit->column1, edit->column2);
        copy_buf = edit_get_block (edit, start_mark, end_mark, &size);
        if (x < c2) {
            edit_block_delete_cmd (edit);
            deleted = 1;
        }
        edit_move_to_line (edit, line);
        edit_cursor_move (edit,
                          edit_move_forward3 (edit,
                                              edit_bol (edit, edit->curs1),
                                              x, 0) - edit->curs1);
        edit_insert_column_of_text (edit, copy_buf, size, c2 - c1);
        if (!deleted) {
            line = edit->curs_line;
            edit_update_curs_col (edit);
            x = edit->curs_col;
            edit_block_delete_cmd (edit);
            edit_move_to_line (edit, line);
            edit_cursor_move (edit,
                              edit_move_forward3 (edit,
                                                  edit_bol (edit,
                                                            edit->curs1),
                                                  x, 0) - edit->curs1);
        }
        edit_set_markers (edit, 0, 0, 0, 0);
        edit_push_action (edit, COLUMN_ON);
        column_highlighting = 0;
    } else {
        copy_buf = g_malloc0 (end_mark - start_mark);
        edit_cursor_move (edit, start_mark - edit->curs1);
        edit_scroll_screen_over_cursor (edit);
        count = start_mark;
        while (count < end_mark) {
            copy_buf[end_mark - count - 1] = edit_delete (edit, 1);
            count++;
        }
        edit_scroll_screen_over_cursor (edit);
        edit_cursor_move (edit,
                          current - edit->curs1 -
                          (((current - edit->curs1) >
                            0) ? end_mark - start_mark : 0));
        edit_scroll_screen_over_cursor (edit);
        while (count-- > start_mark)
            edit_insert_ahead (edit, copy_buf[end_mark - count - 1]);
        edit_set_markers (edit, edit->curs1,
                          edit->curs1 + end_mark - start_mark, 0, 0);
    }
    edit_scroll_screen_over_cursor (edit);
    g_free (copy_buf);
    edit->force |= REDRAW_PAGE;
}

static void
edit_delete_column_of_text (WEdit * edit)
{
    long p, q, r, m1, m2;
    long b, c, d, n;

    eval_marks (edit, &m1, &m2);
    n = edit_move_forward (edit, m1, 0, m2) + 1;
    c = edit_move_forward3 (edit, edit_bol (edit, m1), 0, m1);
    d = edit_move_forward3 (edit, edit_bol (edit, m2), 0, m2);
    b = max (min (c, d), min (edit->column1, edit->column2));
    c = max (c, max (edit->column1, edit->column2));

    while (n--) {
        r = edit_bol (edit, edit->curs1);
        p = edit_move_forward3 (edit, r, b, 0);
        q = edit_move_forward3 (edit, r, c, 0);
        if (p < m1)
            p = m1;
        if (q > m2)
            q = m2;
        edit_cursor_move (edit, p - edit->curs1);
        while (q > p) {
            /* delete line between margins */
            if (edit_get_byte (edit, edit->curs1) != '\n')
                edit_delete (edit, 1);
            q--;
        }
        if (n)
            /* move to next line except on the last delete */
            edit_cursor_move (edit, edit_move_forward (edit, edit->curs1, 1, 0) - edit->curs1);
    }
}

/* if success return 0 */
static int
edit_block_delete (WEdit *edit)
{
    long count;
    long start_mark, end_mark;
    int curs_pos, line_width;
    long curs_line, c1, c2;

    if (eval_marks (edit, &start_mark, &end_mark))
        return 0;
    if (column_highlighting && edit->mark2 < 0)
        edit_mark_cmd (edit, 0);
    if ((end_mark - start_mark) > option_max_undo / 2) {
        /* Warning message with a query to continue or cancel the operation */
        if (edit_query_dialog2
            (_("Warning"),
             _
             (" Block is large, you may not be able to undo this action. "),
             _("C&ontinue"), _("&Cancel"))) {
            return 1;
        }
    }
    c1 = min (edit->column1, edit->column2);
    c2 = max (edit->column1, edit->column2);
    edit->column1 = c1;
    edit->column2 = c2;

    edit_push_markers (edit);

    curs_line = edit->curs_line;

    /* calculate line width and cursor position before cut */
    line_width = edit_move_forward3 (edit, edit_bol (edit, edit->curs1), 0,
                                     edit_eol (edit, edit->curs1));
    curs_pos = edit->curs_col + edit->over_col;

    /* move cursor to start of selection */
    edit_cursor_move (edit, start_mark - edit->curs1);
    edit_scroll_screen_over_cursor (edit);
    count = start_mark;
    if (start_mark < end_mark) {
        if (column_highlighting) {
            if (edit->mark2 < 0)
                edit_mark_cmd (edit, 0);
            edit_delete_column_of_text (edit);
            /* move cursor to the saved position */
            edit_move_to_line (edit, curs_line);
            /* calculate line width after cut */
            line_width = edit_move_forward3 (edit, edit_bol (edit, edit->curs1), 0,
                                             edit_eol (edit, edit->curs1));
            if (option_cursor_beyond_eol && curs_pos > line_width)
                edit->over_col = curs_pos - line_width;
        } else {
            while (count < end_mark) {
                edit_delete (edit, 1);
                count++;
            }
        }
    }
    edit_set_markers (edit, 0, 0, 0, 0);
    edit->force |= REDRAW_PAGE;
    return 0;
}

/* returns 1 if canceelled by user */
int edit_block_delete_cmd (WEdit * edit)
{
    long start_mark, end_mark;
    if (eval_marks (edit, &start_mark, &end_mark)) {
        edit_delete_line (edit);
        return 0;
    }
    return edit_block_delete (edit);
}

#define INPUT_INDEX 9

static gboolean
editcmd_find (WEdit *edit, gsize *len)
{
    off_t search_start = edit->search_start;
    off_t search_end;
    long start_mark = 0;
    long end_mark = edit->last_byte;
    int mark_res = 0;

    if (edit->only_in_selection) {
        mark_res = eval_marks(edit, &start_mark, &end_mark);
        if (mark_res != 0) {
            edit->search->error = MC_SEARCH_E_NOTFOUND;
            edit->search->error_str = g_strdup(_(" Search string not found "));
            return FALSE;
        }
        if (edit->replace_backwards) {
            if (search_start > end_mark || search_start <= start_mark) {
                search_start = end_mark;
            }
        } else {
            if (search_start < start_mark || search_start >= end_mark) {
                search_start = start_mark;
            }
        }
    } else {
        if (edit->replace_backwards)
            end_mark = max(1, edit->curs1) - 1;
    }
    if (edit->replace_backwards) {
        search_end = end_mark;
        while ((int) search_start >= start_mark) {
            if (search_end > search_start + edit->search->original_len
                && mc_search_is_fixed_search_str(edit->search)) {
                search_end = search_start + edit->search->original_len;
            }
            if (mc_search_run(edit->search, (void *) edit, search_start, search_end, len)
                && edit->search->normal_offset == search_start ) {
                return TRUE;
            }
            search_start--;
        }
        edit->search->error_str = g_strdup(_(" Search string not found "));
    } else {
        return mc_search_run(edit->search, (void *) edit, search_start, end_mark, len);
    }
    return FALSE;
}


/* thanks to  Liviu Daia <daia@stoilow.imar.ro>  for getting this
   (and the above) routines to work properly - paul */

#define is_digit(x) ((x) >= '0' && (x) <= '9')

static char *
edit_replace_cmd__conv_to_display (char *str)
{
#ifdef HAVE_CHARSET
    GString *tmp;
    tmp = str_convert_to_display (str);

    if (tmp && tmp->len){
        return g_string_free (tmp, FALSE);
    }
    g_string_free (tmp, TRUE);
#endif
    return g_strdup(str);
}

static char *
edit_replace_cmd__conv_to_input(char *str)
{
#ifdef HAVE_CHARSET
    GString *tmp;
    tmp = str_convert_to_input (str);

    if (tmp && tmp->len){
        return g_string_free (tmp, FALSE);
    }
    g_string_free (tmp, TRUE);
    return g_strdup(str);
#endif
    return g_strdup(str);
}
/* call with edit = 0 before shutdown to close memory leaks */
void
edit_replace_cmd (WEdit *edit, int again)
{
    /* 1 = search string, 2 = replace with */
    static char *saved1 = NULL; /* saved default[123] */
    static char *saved2 = NULL;
    char *input1 = NULL;        /* user input from the dialog */
    char *input2 = NULL;
    int replace_yes;
    long times_replaced = 0, last_search;
    gboolean once_found = FALSE;

    if (!edit) {
        g_free (saved1), saved1 = NULL;
        g_free (saved2), saved2 = NULL;
        return;
    }

    last_search = edit->last_byte;

    edit->force |= REDRAW_COMPLETELY;

    if (again && !saved1 && !saved2)
        again = 0;

    if (again) {
        input1 = g_strdup (saved1 ? saved1 : "");
        input2 = g_strdup (saved2 ? saved2 : "");
    } else {
        char *disp1 = edit_replace_cmd__conv_to_display (saved1 ? saved1 : (char *) "");
        char *disp2 = edit_replace_cmd__conv_to_display (saved2 ? saved2 : (char *) "");
        char *tmp_inp1, *tmp_inp2;

        edit_push_action (edit, KEY_PRESS + edit->start_display);

        editcmd_dialog_replace_show (edit, disp1, disp2, &input1, &input2 );

        g_free (disp1);
        g_free (disp2);

        if (input1 == NULL || *input1 == '\0') {
            edit->force = REDRAW_COMPLETELY;
            goto cleanup;
        }

        tmp_inp1 = input1; tmp_inp2 = input2;
        input1 = edit_replace_cmd__conv_to_input(input1);
        input2 = edit_replace_cmd__conv_to_input(input2);
        g_free(tmp_inp1); g_free(tmp_inp2);

        g_free (saved1), saved1 = g_strdup (input1);
        g_free (saved2), saved2 = g_strdup (input2);

        if (edit->search) {
            mc_search_free(edit->search);
            edit->search = NULL;
        }
    }

    if (!edit->search) {
        edit->search = mc_search_new(input1, -1);
        if (edit->search == NULL) {
            edit->search_start = edit->curs1;
            return;
        }
        edit->search->search_type = edit->search_type;
        edit->search->is_all_charsets = edit->all_codepages;
        edit->search->is_case_sentitive = edit->replace_case;
        edit->search->whole_words = edit->whole_words;
        edit->search->search_fn = edit_search_cmd_callback;
    }

    if (edit->found_len && edit->search_start == edit->found_start + 1
        && edit->replace_backwards)
        edit->search_start--;

    if (edit->found_len && edit->search_start == edit->found_start - 1
        && !edit->replace_backwards)
        edit->search_start++;

    do {
        gsize len = 0;
        long new_start;
        
        if (! editcmd_find(edit, &len)) {
            if (!(edit->search->error == MC_SEARCH_E_OK ||
               (once_found && edit->search->error == MC_SEARCH_E_NOTFOUND))) {
                edit_error_dialog (_ ("Search"), edit->search->error_str);
            }
            break;
        }
        once_found = TRUE;
        new_start = edit->search->normal_offset;

        edit->search_start = new_start = edit->search->normal_offset;
        /*returns negative on not found or error in pattern */

        if (edit->search_start >= 0) {
            guint i;

            edit->found_start = edit->search_start;
            i = edit->found_len = len;

            edit_cursor_move (edit, edit->search_start - edit->curs1);
            edit_scroll_screen_over_cursor (edit);

            replace_yes = 1;

            if (edit->replace_mode == 0) {
                int l;
                l = edit->curs_row - edit->num_widget_lines / 3;
                if (l > 0)
                    edit_scroll_downward (edit, l);
                if (l < 0)
                    edit_scroll_upward (edit, -l);

                edit_scroll_screen_over_cursor (edit);
                edit->force |= REDRAW_PAGE;
                edit_render_keypress (edit);

                /*so that undo stops at each query */
                edit_push_key_press (edit);
                /* and prompt 2/3 down */
                switch (editcmd_dialog_replace_prompt_show (edit, input1, input2, -1, -1)) {
                case B_ENTER:
                    replace_yes = 1;
                    break;
                case B_SKIP_REPLACE:
                    replace_yes = 0;
                    break;
                case B_REPLACE_ALL:
                    edit->replace_mode=1;
                    break;
                case B_CANCEL:
                    replace_yes = 0;
                    edit->replace_mode = -1;
                    break;
                }
            }
            if (replace_yes) {  /* delete then insert new */
                GString *repl_str, *tmp_str;
                tmp_str = g_string_new(input2);
                
                repl_str = mc_search_prepare_replace_str (edit->search, tmp_str);
                g_string_free(tmp_str, TRUE);
                if (edit->search->error != MC_SEARCH_E_OK)
                {
                    edit_error_dialog (_ ("Replace"), edit->search->error_str);
                    break;
                }

                while (i--)
                    edit_delete (edit, 1);

                while (++i < repl_str->len)
                        edit_insert (edit, repl_str->str[i]);
                
                g_string_free(repl_str, TRUE);
                edit->found_len = i;
            }
            /* so that we don't find the same string again */
            if (edit->replace_backwards) {
                last_search = edit->search_start;
                edit->search_start--;
            } else {
                edit->search_start += i;
                last_search = edit->last_byte;
            }
            edit_scroll_screen_over_cursor (edit);
        } else {
            const char *msg = _(" Replace ");
            /* try and find from right here for next search */
            edit->search_start = edit->curs1;
            edit_update_curs_col (edit);

            edit->force |= REDRAW_PAGE;
            edit_render_keypress (edit);
            if (times_replaced) {
                message (D_NORMAL, msg, _(" %ld replacements made. "),
                         times_replaced);
            } else
                query_dialog (msg, _(" Search string not found "),
                              D_NORMAL, 1, _("&OK"));
            edit->replace_mode = -1;
        }
    } while (edit->replace_mode >= 0);

    edit->force = REDRAW_COMPLETELY;
    edit_scroll_screen_over_cursor (edit);
  cleanup:
    g_free (input1);
    g_free (input2);
}


void edit_search_cmd (WEdit * edit, int again)
{
    char *search_string = NULL, *search_string_dup = NULL;

    gsize len = 0;

    if (!edit)
        return;

    if (edit->search != NULL) {
        search_string = g_strndup(edit->search->original, edit->search->original_len);
        search_string_dup = search_string;
    } else {
        GList *history;
        history = history_get (MC_HISTORY_SHARED_SEARCH);
        if (history != NULL && history->data != NULL) {
            search_string_dup = search_string = (char *) g_strdup(history->data);
            history = g_list_first (history);
            g_list_foreach (history, (GFunc) g_free, NULL);
            g_list_free (history);
        }
        edit->search_start = edit->curs1;
    }

    if (!again) {
#ifdef HAVE_CHARSET
        GString *tmp;
        if (search_string && *search_string) {
            tmp = str_convert_to_display (search_string);

            g_free(search_string_dup);
            search_string_dup = NULL;

            if (tmp && tmp->len)
                search_string = search_string_dup = tmp->str;
            g_string_free (tmp, FALSE);
        }
#endif /* HAVE_CHARSET */
        editcmd_dialog_search_show (edit, &search_string);
#ifdef HAVE_CHARSET
        if (search_string && *search_string) {
            tmp = str_convert_to_input (search_string);
            if (tmp && tmp->len)
                search_string = tmp->str;

            g_string_free (tmp, FALSE);

            if (search_string_dup)
                g_free(search_string_dup);
        }
#endif /* HAVE_CHARSET */

        edit_push_action (edit, KEY_PRESS + edit->start_display);

        if (!search_string) {
            edit->force |= REDRAW_COMPLETELY;
            edit_scroll_screen_over_cursor (edit);
            return;
        }

        if (edit->search) {
            mc_search_free(edit->search);
            edit->search = NULL;
        }
    }

    if (!edit->search) {
        edit->search = mc_search_new(search_string, -1);
        if (edit->search == NULL) {
            edit->search_start = edit->curs1;
            return;
        }
        edit->search->search_type = edit->search_type;
        edit->search->is_all_charsets = edit->all_codepages;
        edit->search->is_case_sentitive = edit->replace_case;
        edit->search->whole_words = edit->whole_words;
        edit->search->search_fn = edit_search_cmd_callback;
    }

    if (search_create_bookmark) {
        edit_search_cmd_search_create_bookmark(edit);
    } else {
        if (edit->found_len && edit->search_start == edit->found_start + 1 && edit->replace_backwards)
            edit->search_start--;

        if (edit->found_len && edit->search_start == edit->found_start - 1 && !edit->replace_backwards)
            edit->search_start++;

        
        if (editcmd_find(edit, &len)) {
            edit->found_start = edit->search_start = edit->search->normal_offset;
            edit->found_len = len;
            edit->over_col = 0;
            edit_cursor_move (edit, edit->search_start - edit->curs1);
            edit_scroll_screen_over_cursor (edit);
            if (edit->replace_backwards)
                edit->search_start--;
            else
                edit->search_start++;
        } else {
            edit->search_start = edit->curs1;
            if (edit->search->error_str)
                edit_error_dialog (_ ("Search"), edit->search->error_str);
        }
    }

    edit->force |= REDRAW_COMPLETELY;
    edit_scroll_screen_over_cursor (edit);
}


/*
 * Check if it's OK to close the editor.  If there are unsaved changes,
 * ask user.  Return 1 if it's OK to exit, 0 to continue editing.
 */
int
edit_ok_to_exit (WEdit *edit)
{
    if (!edit->modified)
        return 1;

    if (!edit_check_newline (edit))
        return 0;

    switch (edit_query_dialog3
            (_("Quit"), _(" File was modified, Save with exit? "),
             _("&Cancel quit"), _("&Yes"), _("&No"))) {
    case 1:
        edit_push_markers (edit);
        edit_set_markers (edit, 0, 0, 0, 0);
        if (!edit_save_cmd (edit))
            return 0;
        break;
    case 2:
        break;
    case 0:
    case -1:
        return 0;
    }

    return 1;
}

/* Return a null terminated length of text. Result must be g_free'd */
static unsigned char *
edit_get_block (WEdit *edit, long start, long finish, int *l)
{
    unsigned char *s, *r;
    r = s = g_malloc0 (finish - start + 1);
    if (column_highlighting) {
        *l = 0;
        /* copy from buffer, excluding chars that are out of the column 'margins' */
        while (start < finish) {
            int c;
            long x;
            x = edit_move_forward3 (edit, edit_bol (edit, start), 0,
                                    start);
            c = edit_get_byte (edit, start);
            if ((x >= edit->column1 && x < edit->column2)
                || (x >= edit->column2 && x < edit->column1) || c == '\n') {
                *s++ = c;
                (*l)++;
            }
            start++;
        }
    } else {
        *l = finish - start;
        while (start < finish)
            *s++ = edit_get_byte (edit, start++);
    }
    *s = 0;
    return r;
}

/* save block, returns 1 on success */
int
edit_save_block (WEdit * edit, const char *filename, long start,
                 long finish)
{
    int len, file;

    if ((file =
         mc_open (filename, O_CREAT | O_WRONLY | O_TRUNC,
                  S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH | O_BINARY)) == -1)
        return 0;

    if (column_highlighting) {
        int r;
        r = mc_write (file, VERTICAL_MAGIC, sizeof(VERTICAL_MAGIC));
        if (r > 0) {
            unsigned char *block, *p;
            p = block = edit_get_block (edit, start, finish, &len);
            while (len) {
                r = mc_write (file, p, len);
                if (r < 0)
                    break;
                p += r;
                len -= r;
            }
            g_free (block);
        }
    } else {
        unsigned char *buf;
        int i = start, end;
        len = finish - start;
        buf = g_malloc0 (TEMP_BUF_LEN);
        while (start != finish) {
            end = min (finish, start + TEMP_BUF_LEN);
            for (; i < end; i++)
                buf[i - start] = edit_get_byte (edit, i);
            len -= mc_write (file, (char *) buf, end - start);
            start = end;
        }
        g_free (buf);
    }
    mc_close (file);
    if (len)
        return 0;
    return 1;
}

/* copies a block to clipboard file */
static int edit_save_block_to_clip_file (WEdit * edit, long start, long finish)
{
    int ret;
    gchar *tmp;
    tmp = concat_dir_and_file (home_dir, EDIT_CLIP_FILE);
    ret = edit_save_block (edit, tmp, start, finish);
    g_free(tmp);
    return ret;
}


void edit_paste_from_history (WEdit *edit)
{
    (void) edit;
    edit_error_dialog (_(" Error "), _(" This function is not implemented. "));
}

int edit_copy_to_X_buf_cmd (WEdit * edit)
{
    long start_mark, end_mark;
    if (eval_marks (edit, &start_mark, &end_mark))
        return 0;
    if (!edit_save_block_to_clip_file (edit, start_mark, end_mark)) {
        edit_error_dialog (_(" Copy to clipboard "), get_sys_error (_(" Unable to save to file. ")));
        return 1;
    }
    edit_mark_cmd (edit, 1);
    return 0;
}

int edit_cut_to_X_buf_cmd (WEdit * edit)
{
    long start_mark, end_mark;
    if (eval_marks (edit, &start_mark, &end_mark))
        return 0;
    if (!edit_save_block_to_clip_file (edit, start_mark, end_mark)) {
        edit_error_dialog (_(" Cut to clipboard "), _(" Unable to save to file. "));
        return 1;
    }
    edit_block_delete_cmd (edit);
    edit_mark_cmd (edit, 1);
    return 0;
}

void edit_paste_from_X_buf_cmd (WEdit * edit)
{
    gchar *tmp;
    tmp = concat_dir_and_file (home_dir, EDIT_CLIP_FILE);
    edit_insert_file (edit, tmp);
    g_free(tmp);
}


/*
 * Ask user for the line and go to that line.
 * Negative numbers mean line from the end (i.e. -1 is the last line).
 */
void
edit_goto_cmd (WEdit *edit)
{
    char *f;
    static long line = 0;       /* line as typed, saved as default */
    long l;
    char *error;
    char s[32];

    g_snprintf (s, sizeof (s), "%ld", line);
    f = input_dialog (_(" Goto line "), _(" Enter line: "), MC_HISTORY_EDIT_GOTO_LINE,
                      line ? s : "");
    if (!f)
        return;

    if (!*f) {
        g_free (f);
        return;
    }

    l = strtol (f, &error, 0);
    if (*error) {
        g_free (f);
        return;
    }

    line = l;
    if (l < 0)
        l = edit->total_lines + l + 2;
    edit_move_display (edit, l - edit->num_widget_lines / 2 - 1);
    edit_move_to_line (edit, l - 1);
    edit->force |= REDRAW_COMPLETELY;
    g_free (f);
}


/* Return 1 on success */
int
edit_save_block_cmd (WEdit *edit)
{
    long start_mark, end_mark;
    char *exp, *tmp;

    if (eval_marks (edit, &start_mark, &end_mark))
        return 1;

    tmp = concat_dir_and_file (home_dir, EDIT_CLIP_FILE);
    exp =
        input_expand_dialog (_(" Save Block "), _(" Enter file name: "),
                             MC_HISTORY_EDIT_SAVE_BLOCK, 
                            tmp);
    g_free(tmp);
    edit_push_action (edit, KEY_PRESS + edit->start_display);
    if (exp) {
        if (!*exp) {
            g_free (exp);
            return 0;
        } else {
            if (edit_save_block (edit, exp, start_mark, end_mark)) {
                g_free (exp);
                edit->force |= REDRAW_COMPLETELY;
                return 1;
            } else {
                g_free (exp);
                edit_error_dialog (_(" Save Block "),
                                   get_sys_error (_
                                                  (" Cannot save file. ")));
            }
        }
    }
    edit->force |= REDRAW_COMPLETELY;
    return 0;
}


/* returns 1 on success */
int
edit_insert_file_cmd (WEdit *edit)
{
    gchar *tmp;
    char *exp;

    tmp = concat_dir_and_file (home_dir, EDIT_CLIP_FILE);
    exp = input_expand_dialog (_(" Insert File "), _(" Enter file name: "),
                                     MC_HISTORY_EDIT_INSERT_FILE,
                                     tmp);
    g_free(tmp);
    edit_push_action (edit, KEY_PRESS + edit->start_display);
    if (exp) {
        if (!*exp) {
            g_free (exp);
            return 0;
        } else {
            if (edit_insert_file (edit, exp)) {
                g_free (exp);
                edit->force |= REDRAW_COMPLETELY;
                return 1;
            } else {
                g_free (exp);
                edit_error_dialog (_(" Insert File "),
                                   get_sys_error (_
                                                  (" Cannot insert file. ")));
            }
        }
    }
    edit->force |= REDRAW_COMPLETELY;
    return 0;
}

/* sorts a block, returns -1 on system fail, 1 on cancel and 0 on success */
int edit_sort_cmd (WEdit * edit)
{
    static char *old = 0;
    char *exp, *tmp;
    long start_mark, end_mark;
    int e;

    if (eval_marks (edit, &start_mark, &end_mark)) {
        edit_error_dialog (_(" Sort block "), _(" You must first highlight a block of text. "));
        return 0;
    }

    tmp = concat_dir_and_file (home_dir, EDIT_BLOCK_FILE);
    edit_save_block (edit, tmp, start_mark, end_mark);
    g_free(tmp);

    exp = input_dialog (_(" Run Sort "),
        _(" Enter sort options (see manpage) separated by whitespace: "),
        MC_HISTORY_EDIT_SORT, (old != NULL) ? old : "");

    if (!exp)
        return 1;
    g_free (old);
    old = exp;
    tmp = g_strconcat (" sort ", exp, " ", home_dir, PATH_SEP_STR EDIT_BLOCK_FILE, " > ",
                        home_dir, PATH_SEP_STR EDIT_TEMP_FILE, (char *) NULL);
    e = system (tmp);
    g_free(tmp);
    if (e) {
        if (e == -1 || e == 127) {
            edit_error_dialog (_(" Sort "),
            get_sys_error (_(" Cannot execute sort command ")));
        } else {
            char q[8];
            sprintf (q, "%d ", e);
            tmp = g_strconcat (_(" Sort returned non-zero: "), q, (char *) NULL);
            edit_error_dialog (_(" Sort "), tmp);
            g_free(tmp);
        }
        return -1;
    }

    edit->force |= REDRAW_COMPLETELY;

    if (edit_block_delete_cmd (edit))
        return 1;
    tmp = concat_dir_and_file (home_dir, EDIT_TEMP_FILE);
    edit_insert_file (edit, tmp);
    g_free(tmp);
    return 0;
}

/*
 * Ask user for a command, execute it and paste its output back to the
 * editor.
 */
int
edit_ext_cmd (WEdit *edit)
{
    char *exp, *tmp;
    int e;

    exp =
        input_dialog (_("Paste output of external command"),
                      _("Enter shell command(s):"),
                      MC_HISTORY_EDIT_PASTE_EXTCMD, NULL);

    if (!exp)
        return 1;

    tmp = g_strconcat (exp, " > ", home_dir, PATH_SEP_STR EDIT_TEMP_FILE, (char *) NULL);
    e = system (tmp);
    g_free(tmp);
    g_free (exp);

    if (e) {
        edit_error_dialog (_("External command"),
                           get_sys_error (_("Cannot execute command")));
        return -1;
    }

    edit->force |= REDRAW_COMPLETELY;
    tmp = concat_dir_and_file (home_dir, EDIT_TEMP_FILE);
    edit_insert_file (edit, tmp);
    g_free(tmp);
    return 0;
}

/* if block is 1, a block must be highlighted and the shell command
   processes it. If block is 0 the shell command is a straight system
   command, that just produces some output which is to be inserted */
void
edit_block_process_cmd (WEdit *edit, const char *shell_cmd, int block)
{
    long start_mark, end_mark;
    char buf[BUFSIZ];
    FILE *script_home = NULL;
    FILE *block_file = NULL;
    gchar *o, *h, *b, *tmp;
    char *quoted_name = NULL;

    o = g_strconcat (mc_home, shell_cmd, (char *) NULL);                                /* original source script */
    h = g_strconcat (home_dir, PATH_SEP_STR EDIT_DIR, shell_cmd, (char *) NULL);        /* home script */
    b = concat_dir_and_file (home_dir, EDIT_BLOCK_FILE);                                /* block file */

    script_home = fopen (h, "r");
    if (script_home == NULL) {
        FILE *script_src = NULL;

        script_home = fopen (h, "w");
        if (script_home == NULL) {
            tmp = g_strconcat (_("Error creating script:"), h, (char *) NULL);
            edit_error_dialog ("", get_sys_error (tmp));
            g_free(tmp);
            goto edit_block_process_cmd__EXIT;
        }

        script_src = fopen (o, "r");
        if (script_src == NULL) {
            o = g_strconcat (mc_home_alt, shell_cmd, (char *) NULL);
            script_src = fopen (o, "r");
            if (script_src == NULL) {
                fclose (script_home);
                unlink (h);
                tmp = g_strconcat (_("Error reading script:"), o, (char *) NULL);
                edit_error_dialog ("", get_sys_error (tmp));
                g_free(tmp);
                goto edit_block_process_cmd__EXIT;
            }
        }
        while (fgets (buf, sizeof (buf), script_src))
            fputs (buf, script_home);
        fclose (script_src);

        if (fclose (script_home)) {
            tmp = g_strconcat (_("Error closing script:"), h, (char *) NULL);
            edit_error_dialog ("", get_sys_error (tmp));
            g_free(tmp);
            goto edit_block_process_cmd__EXIT;
        }
        chmod (h, 0700);
        tmp = g_strconcat (_("Script created:"), h, (char *) NULL);
        edit_error_dialog ("", get_sys_error (tmp));
        g_free(tmp);
    }

    open_error_pipe ();

    if (block) {                /* for marked block run indent formatter */
        if (eval_marks (edit, &start_mark, &end_mark)) {
            edit_error_dialog (_("Process block"),
                               _
                               (" You must first highlight a block of text. "));
            goto edit_block_process_cmd__EXIT;
        }
        edit_save_block (edit, b, start_mark, end_mark);
        quoted_name = name_quote (edit->filename, 0);
        /*
         * Run script.
         * Initial space is to avoid polluting bash history.
         * Arguments:
         *   $1 - name of the edited file (to check its extension etc).
         *   $2 - file containing the current block.
         *   $3 - file where error messages should be put
         *        (for compatibility with old scripts).
         */
        tmp = g_strconcat (" ", home_dir, PATH_SEP_STR EDIT_DIR, shell_cmd, " ", quoted_name,
                         " ", home_dir, PATH_SEP_STR EDIT_BLOCK_FILE " /dev/null", (char *) NULL);
        system (tmp);
        g_free(tmp);
    } else {
        /*
         * No block selected, just execute the command for the file.
         * Arguments:
         *   $1 - name of the edited file.
         */
        tmp = g_strconcat (" ", home_dir, PATH_SEP_STR EDIT_DIR, shell_cmd, " ",
                         quoted_name, (char *) NULL);
        system (tmp);
        g_free(tmp);
    }
    g_free (quoted_name);
    close_error_pipe (D_NORMAL, NULL);

    edit_refresh_cmd (edit);
    edit->force |= REDRAW_COMPLETELY;

    /* insert result block */
    if (block && !edit_block_delete_cmd (edit)) {
        edit_insert_file (edit, b);
        block_file = fopen (b, "w");
        if (block_file != NULL)
            fclose (block_file);
    }

edit_block_process_cmd__EXIT:
    g_free (b);
    g_free (h);
    g_free (o);
}

/* prints at the cursor */
/* returns the number of chars printed */
int edit_print_string (WEdit * e, const char *s)
{
    size_t i = 0;
    while (s[i] != '\0')
        edit_execute_cmd (e, CK_Insert_Char, (unsigned char) s[i++]);
    e->force |= REDRAW_COMPLETELY;
    edit_update_screen (e);
    return i;
}


static void pipe_mail (WEdit *edit, char *to, char *subject, char *cc)
{
    FILE *p = 0;
    char *s;

    to = name_quote (to, 0);
    subject = name_quote (subject, 0);
    cc = name_quote (cc, 0);
    s = g_strconcat ("mail -s ", subject, *cc ? " -c " : "" , cc, " ",  to, (char *) NULL);
    g_free (to);
    g_free (subject);
    g_free (cc);

    if (s) {
        p = popen (s, "w");
        g_free (s);
    }

    if (p) {
        long i;
        for (i = 0; i < edit->last_byte; i++)
            fputc (edit_get_byte (edit, i), p);
        pclose (p);
    }
}

#define MAIL_DLG_HEIGHT 12

void edit_mail_dialog (WEdit * edit)
{
    char *tmail_to;
    char *tmail_subject;
    char *tmail_cc;

    static char *mail_cc_last = 0;
    static char *mail_subject_last = 0;
    static char *mail_to_last = 0;

    QuickWidget quick_widgets[] =
    {
        /* 0 */ QUICK_BUTTON (6, 10, 9, MAIL_DLG_HEIGHT, N_("&Cancel"), B_CANCEL, NULL),
        /* 1 */ QUICK_BUTTON (2, 10, 9, MAIL_DLG_HEIGHT, N_("&OK"),     B_ENTER,  NULL),
        /* 2 */ QUICK_INPUT (3, 50, 8, MAIL_DLG_HEIGHT, "", 44, 0, "mail-dlg-input", &tmail_cc),
        /* 3 */ QUICK_LABEL (2, 50, 7, MAIL_DLG_HEIGHT, N_(" Copies to")),
        /* 4 */ QUICK_INPUT (3, 50, 6, MAIL_DLG_HEIGHT, "", 44, 0, "mail-dlg-input-2", &tmail_subject),
        /* 5 */ QUICK_LABEL (2, 50, 5, MAIL_DLG_HEIGHT, N_(" Subject")),
        /* 6 */ QUICK_INPUT (3, 50, 4, MAIL_DLG_HEIGHT, "", 44, 0, "mail-dlg-input-3", &tmail_to),
        /* 7 */ QUICK_LABEL (2, 50, 3, MAIL_DLG_HEIGHT, N_(" To")),
        /* 8 */ QUICK_LABEL (2, 50, 2, MAIL_DLG_HEIGHT, N_(" mail -s <subject> -c <cc> <to>")),
        QUICK_END
    };

    QuickDialog Quick_input =
    {
        50, MAIL_DLG_HEIGHT, -1, -1, N_(" Mail "),
        "[Input Line Keys]", quick_widgets, FALSE
    };

    quick_widgets[2].u.input.text = mail_cc_last ? mail_cc_last : "";
    quick_widgets[4].u.input.text = mail_subject_last ? mail_subject_last : "";
    quick_widgets[6].u.input.text = mail_to_last ? mail_to_last : "";

    if (quick_dialog (&Quick_input) != B_CANCEL) {
        g_free (mail_cc_last);
        g_free (mail_subject_last);
        g_free (mail_to_last);
        mail_cc_last = tmail_cc;
        mail_subject_last = tmail_subject;
        mail_to_last = tmail_to;
        pipe_mail (edit, mail_to_last, mail_subject_last, mail_cc_last);
    }
}


/*******************/
/* Word Completion */
/*******************/

static gboolean is_break_char(char c)
{
    return (isspace(c) || strchr("{}[]()<>=|/\\!?~'\",.;:#$%^&*", c));
}

/* find first character of current word */
static int edit_find_word_start (WEdit *edit, long *word_start, gsize *word_len)
{
    int c, last;
    gsize i;

/* return if at begin of file */
    if (edit->curs1 <= 0)
        return 0;

    c = (unsigned char) edit_get_byte (edit, edit->curs1 - 1);
/* return if not at end or in word */
    if (is_break_char(c))
        return 0;

/* search start of word to be completed */
    for (i = 2;; i++) {
/* return if at begin of file */
        if (edit->curs1 - i < 0)
            return 0;

        last = c;
        c = (unsigned char) edit_get_byte (edit, edit->curs1 - i);

        if (is_break_char(c)) {
/* return if word starts with digit */
            if (isdigit (last))
                return 0;

            *word_start = edit->curs1 - (i - 1); /* start found */
            *word_len = i - 1;
            break;
        }
    }
/* success */
    return 1;
}

#define MAX_WORD_COMPLETIONS 100        /* in listbox */

/* collect the possible completions */
static gsize
edit_collect_completions (WEdit *edit, long start, gsize word_len,
                          char *match_expr, struct selection *compl,
                          gsize *num)
{
    gsize len = 0;
    gsize max_len = 0;
    gsize i;
    int skip;
    GString *temp;
    mc_search_t *srch;

    long last_byte;

    srch = mc_search_new(match_expr, -1);
    if (srch == NULL)
        return 0;

    if (mc_config_get_bool(mc_main_config, CONFIG_APP_SECTION, "editor_wordcompletion_collect_entire_file", 0)){
        last_byte = edit->last_byte;
    } else {
        last_byte = start;
    }

    srch->search_type = MC_SEARCH_T_REGEX;
    srch->is_case_sentitive = TRUE;
    srch->search_fn = edit_search_cmd_callback;

    /* collect max MAX_WORD_COMPLETIONS completions */
    start = -1;
    while (1) {
        /* get next match */
        if (mc_search_run (srch, (void *) edit, start+1, last_byte, &len) == FALSE)
            break;
        start = srch->normal_offset;

        /* add matched completion if not yet added */
        temp = g_string_new("");
        for (i = 0; i < len; i++){
            skip =  edit_get_byte(edit, start+i);
            if (isspace(skip))
                continue;
            g_string_append_c (temp, skip);
        }

        skip = 0;

        for (i = 0; i < (gsize) *num; i++) {
            if (strncmp
                    (
                        (char *) &compl[i].text[word_len],
                        (char *) &temp->str[word_len],
                        max (len, compl[i].len) - (gsize)word_len
                    ) == 0) {
                struct selection this = compl[i];
                for (++i; i < *num; i++) {
                    compl[i - 1] = compl[i];
                }
                compl[*num - 1] = this;
                skip = 1;
                break;          /* skip it, already added */
            }
        }
        if (skip) {
            g_string_free(temp, TRUE);
            continue;
        }
        if (*num == MAX_WORD_COMPLETIONS && MAX_WORD_COMPLETIONS) {
            g_free(compl[0].text);
            for (i = 1; i < *num; i++) {
                compl[i - 1] = compl[i];
            }
            (*num)--;
        }
#ifdef HAVE_CHARSET
        {
            GString *recoded;
            recoded = str_convert_to_display (temp->str);

            if (recoded && recoded->len){
                g_string_free(temp,TRUE);
                temp = recoded;
            } else
                g_string_free(recoded , TRUE);
        }
#endif
        compl[*num].text = temp->str;
        compl[*num].len = temp->len;
        (*num)++;
        start += len;
        g_string_free(temp, FALSE);

        /* note the maximal length needed for the completion dialog */
        if (len > max_len)
            max_len = len;
    }
    mc_search_free(srch);
    return max_len;
}

/*
 * Complete current word using regular expression search
 * backwards beginning at the current cursor position.
 */
void
edit_complete_word_cmd (WEdit *edit)
{
    gsize i, max_len, word_len = 0, num_compl = 0;
    long word_start = 0;
    unsigned char *bufpos;
    char *match_expr;
    struct selection compl[MAX_WORD_COMPLETIONS];       /* completions */

    /* search start of word to be completed */
    if (!edit_find_word_start (edit, &word_start, &word_len))
        return;

    /* prepare match expression */
    bufpos = &edit->buffers1[word_start >> S_EDIT_BUF_SIZE]
        [word_start & M_EDIT_BUF_SIZE];

    /* match_expr = g_strdup_printf ("\\b%.*s[a-zA-Z_0-9]+", word_len, bufpos); */
    match_expr = g_strdup_printf ("(^|\\s+|\\b)%.*s[^\\s\\.=\\+\\[\\]\\(\\)\\,\\;\\:\\\"\\'\\-\\?\\/\\|\\\\\\{\\}\\*\\&\\^\\%%\\$#@\\!]+", (int)word_len, bufpos);

    /* collect the possible completions              */
    /* start search from begin to end of file */
    max_len =
        edit_collect_completions (edit, word_start, word_len, match_expr,
                                  (struct selection *) &compl, &num_compl);

    if (num_compl > 0) {
        /* insert completed word if there is only one match */
        if (num_compl == 1) {
            for (i = word_len; i < compl[0].len; i++)
                edit_insert (edit, *(compl[0].text + i));
        }
        /* more than one possible completion => ask the user */
        else {
            /* !!! usually only a beep is expected and when <ALT-TAB> is !!! */
            /* !!! pressed again the selection dialog pops up, but that  !!! */
            /* !!! seems to require a further internal state             !!! */
            /*tty_beep (); */

            /* let the user select the preferred completion */
            editcmd_dialog_completion_show (edit, max_len, word_len,
                                    (struct selection *) &compl,
                                    num_compl);
        }
    }

    g_free (match_expr);
    /* release memory before return */
    for (i = 0; i < num_compl; i++)
        g_free (compl[i].text);
}

void
edit_select_codepage_cmd (WEdit *edit)
{
#ifdef HAVE_CHARSET
    const char *cp_id = NULL;
    if (do_select_codepage ()) {
        cp_id = get_codepage_id (source_codepage >= 0 ?
                                    source_codepage : display_codepage);

        if (cp_id != NULL) {
            GIConv conv;
            conv = str_crt_conv_from (cp_id);
            if (conv != INVALID_CONV) {
                if (edit->converter != str_cnv_from_term)
                    str_close_conv (edit->converter);
                edit->converter = conv;
            }
        }

        if (cp_id != NULL)
            edit->utf8 = str_isutf8 (cp_id);
    }

    edit->force = REDRAW_COMPLETELY;
    edit_refresh_cmd (edit);
#else
    (void) edit;
#endif
}

void
edit_insert_literal_cmd (WEdit *edit)
{
    int char_for_insertion =
            editcmd_dialog_raw_key_query (_(" Insert Literal "),
                                _(" Press any key: "), 0);
    edit_execute_key_command (edit, -1,
        ascii_alpha_to_cntrl (char_for_insertion));
}

void
edit_execute_macro_cmd (WEdit *edit)
{
    int command =
            CK_Macro (editcmd_dialog_raw_key_query
                      (_(" Execute Macro "), _(" Press macro hotkey: "),
                       1));
    if (command == CK_Macro (0))
        command = CK_Insert_Char;

    edit_execute_key_command (edit, command, -1);
}

void
edit_begin_end_macro_cmd (WEdit *edit)
{
    /* edit is a pointer to the widget */
    if (edit) {
        unsigned long command = edit->macro_i < 0
                        ? CK_Begin_Record_Macro : CK_End_Record_Macro;
        edit_execute_key_command (edit, command, -1);
    }
}

int
edit_load_forward_cmd (WEdit *edit)
{
    if (edit->modified) {
        if (edit_query_dialog2
            (_("Warning"),
             _(" Current text was modified without a file save. \n"
               " Continue discards these changes. "), _("C&ontinue"),
             _("&Cancel"))) {
            edit->force |= REDRAW_COMPLETELY;
            return 0;
        }
    }
    if ( edit_stack_iterator + 1 < MAX_HISTORY_MOVETO ) {
        if ( edit_history_moveto[edit_stack_iterator + 1].line < 1 ) {
            return 1;
        }
        edit_stack_iterator++;
        if ( edit_history_moveto[edit_stack_iterator].filename ) {
            edit_reload_line (edit, edit_history_moveto[edit_stack_iterator].filename,
                              edit_history_moveto[edit_stack_iterator].line);
            return 0;
        } else {
            return 1;
        }
    } else {
        return 1;
    }
}

int
edit_load_back_cmd (WEdit *edit)
{
    if (edit->modified) {
        if (edit_query_dialog2
            (_("Warning"),
             _(" Current text was modified without a file save. \n"
               " Continue discards these changes. "), _("C&ontinue"),
             _("&Cancel"))) {
            edit->force |= REDRAW_COMPLETELY;
            return 0;
        }
    }
    if ( edit_stack_iterator > 0 ) {
        edit_stack_iterator--;
        if ( edit_history_moveto[edit_stack_iterator].filename ) {
            edit_reload_line (edit, edit_history_moveto[edit_stack_iterator].filename,
                              edit_history_moveto[edit_stack_iterator].line);
            return 0;
        } else {
            return 1;
        }
    } else {
        return 1;
    }
}

void
edit_get_match_keyword_cmd (WEdit *edit)
{
    gsize word_len = 0, max_len = 0;
    int num_def = 0;
    int i;
    long word_start = 0;
    unsigned char *bufpos;
    char *match_expr;
    char *path = NULL;
    char *ptr = NULL;
    char *tagfile = NULL;

    etags_hash_t def_hash[MAX_DEFINITIONS];

    for ( i = 0; i < MAX_DEFINITIONS; i++) {
        def_hash[i].filename = NULL;
    }

    /* search start of word to be completed */
    if (!edit_find_word_start (edit, &word_start, &word_len))
        return;

    /* prepare match expression */
    bufpos = &edit->buffers1[word_start >> S_EDIT_BUF_SIZE]
                            [word_start & M_EDIT_BUF_SIZE];
    match_expr = g_strdup_printf ("%.*s", (int)word_len, bufpos);

    ptr = g_get_current_dir ();
    path = g_strconcat (ptr, G_DIR_SEPARATOR_S, (char *) NULL);
    g_free (ptr);

    /* Recursive search file 'TAGS' in parent dirs */
    do {
        ptr = g_path_get_dirname (path);
        g_free(path); path = ptr;
        g_free (tagfile);
        tagfile = g_build_filename (path, TAGS_NAME, (char *) NULL);
        if ( exist_file (tagfile) )
            break;
    } while (strcmp( path, G_DIR_SEPARATOR_S) != 0);

    if (tagfile){
        num_def = etags_set_definition_hash(tagfile, path, match_expr, (etags_hash_t *) &def_hash);
        g_free (tagfile);
    }
    g_free (path);

    max_len = MAX_WIDTH_DEF_DIALOG;
    word_len = 0;
    if ( num_def > 0 ) {
        editcmd_dialog_select_definition_show (edit, match_expr, max_len, word_len,
                                       (etags_hash_t *) &def_hash,
                                       num_def);
    }
    g_free (match_expr);
}

void
edit_move_block_to_right (WEdit * edit)
{
    long start_mark, end_mark;
    long cur_bol, start_bol;

    if ( eval_marks (edit, &start_mark, &end_mark) )
        return;

    start_bol = edit_bol (edit, start_mark);
    cur_bol = edit_bol (edit, end_mark - 1);
    do {
        edit_cursor_move (edit, cur_bol - edit->curs1);
        if ( option_fill_tabs_with_spaces ) {
            if ( option_fake_half_tabs ) {
                insert_spaces_tab (edit, 1);
            } else {
                insert_spaces_tab (edit, 0);
            }
        } else {
            edit_insert (edit, '\t');
        }
        edit_cursor_move (edit, edit_bol (edit, cur_bol) - edit->curs1);
        if ( cur_bol == 0 ) {
            break;
        }
        cur_bol = edit_bol (edit, cur_bol - 1);
    } while (cur_bol >= start_bol) ;
    edit->force |= REDRAW_PAGE;
}

void
edit_move_block_to_left (WEdit * edit)
{
    long start_mark, end_mark;
    long cur_bol, start_bol;
    int i, del_tab_width;
    int next_char;

    if ( eval_marks (edit, &start_mark, &end_mark) )
        return;

    start_bol = edit_bol (edit, start_mark);
    cur_bol = edit_bol (edit, end_mark - 1);
    do {
        edit_cursor_move (edit, cur_bol - edit->curs1);
        if (option_fake_half_tabs) {
            del_tab_width = HALF_TAB_SIZE;
        } else {
            del_tab_width = option_tab_spacing;
        }
        next_char = edit_get_byte (edit, edit->curs1);
        if ( next_char == '\t' ) {
            edit_delete (edit, 1);
        } else if ( next_char == ' ' ) {
            for (i = 1; i <= del_tab_width; i++) {
                if ( next_char == ' ' ) {
                    edit_delete (edit, 1);
                }
                next_char = edit_get_byte (edit, edit->curs1);
            }
        }
        if ( cur_bol == 0 ) {
            break;
        }
        cur_bol = edit_bol (edit, cur_bol - 1);
    } while (cur_bol >= start_bol) ;
    edit->force |= REDRAW_PAGE;
}