2 * "git rebase" builtin command
4 * Copyright (c) 2018 Pratik Karki
7 #define USE_THE_INDEX_COMPATIBILITY_MACROS
9 #include "run-command.h"
11 #include "argv-array.h"
17 #include "cache-tree.h"
18 #include "unpack-trees.h"
20 #include "parse-options.h"
23 #include "wt-status.h"
25 #include "commit-reach.h"
28 #include "sequencer.h"
29 #include "rebase-interactive.h"
31 static char const * const builtin_rebase_usage
[] = {
32 N_("git rebase [-i] [options] [--exec <cmd>] [--onto <newbase>] "
33 "[<upstream>] [<branch>]"),
34 N_("git rebase [-i] [options] [--exec <cmd>] [--onto <newbase>] "
36 N_("git rebase --continue | --abort | --skip | --edit-todo"),
40 static GIT_PATH_FUNC(path_squash_onto
, "rebase-merge/squash-onto")
41 static GIT_PATH_FUNC(path_interactive
, "rebase-merge/interactive")
42 static GIT_PATH_FUNC(apply_dir
, "rebase-apply")
43 static GIT_PATH_FUNC(merge_dir
, "rebase-merge")
46 REBASE_UNSPECIFIED
= -1,
50 REBASE_PRESERVE_MERGES
53 struct rebase_options
{
54 enum rebase_type type
;
55 const char *state_dir
;
56 struct commit
*upstream
;
57 const char *upstream_name
;
58 const char *upstream_arg
;
60 struct object_id orig_head
;
62 const char *onto_name
;
63 const char *revisions
;
64 const char *switch_to
;
66 struct object_id
*squash_onto
;
67 struct commit
*restrict_revision
;
68 int dont_finish_rebase
;
70 REBASE_NO_QUIET
= 1<<0,
71 REBASE_VERBOSE
= 1<<1,
72 REBASE_DIFFSTAT
= 1<<2,
74 REBASE_INTERACTIVE_EXPLICIT
= 1<<4,
76 struct argv_array git_am_opts
;
79 int allow_rerere_autoupdate
;
85 int allow_empty_message
;
86 int rebase_merges
, rebase_cousins
;
87 char *strategy
, *strategy_opts
;
88 struct strbuf git_format_patch_opt
;
89 int reschedule_failed_exec
;
90 int use_legacy_rebase
;
93 #define REBASE_OPTIONS_INIT { \
94 .type = REBASE_UNSPECIFIED, \
95 .flags = REBASE_NO_QUIET, \
96 .git_am_opts = ARGV_ARRAY_INIT, \
97 .git_format_patch_opt = STRBUF_INIT \
100 static struct replay_opts
get_replay_opts(const struct rebase_options
*opts
)
102 struct replay_opts replay
= REPLAY_OPTS_INIT
;
104 replay
.action
= REPLAY_INTERACTIVE_REBASE
;
105 sequencer_init_config(&replay
);
107 replay
.signoff
= opts
->signoff
;
108 replay
.allow_ff
= !(opts
->flags
& REBASE_FORCE
);
109 if (opts
->allow_rerere_autoupdate
)
110 replay
.allow_rerere_auto
= opts
->allow_rerere_autoupdate
;
111 replay
.allow_empty
= 1;
112 replay
.allow_empty_message
= opts
->allow_empty_message
;
113 replay
.verbose
= opts
->flags
& REBASE_VERBOSE
;
114 replay
.reschedule_failed_exec
= opts
->reschedule_failed_exec
;
115 replay
.gpg_sign
= xstrdup_or_null(opts
->gpg_sign_opt
);
116 replay
.strategy
= opts
->strategy
;
117 if (opts
->strategy_opts
)
118 parse_strategy_opts(&replay
, opts
->strategy_opts
);
130 ACTION_SHOW_CURRENT_PATCH
,
133 ACTION_CHECK_TODO_LIST
,
134 ACTION_REARRANGE_SQUASH
,
138 static const char *action_names
[] = { "undefined",
144 "show_current_patch" };
146 static int add_exec_commands(struct string_list
*commands
)
148 const char *todo_file
= rebase_path_todo();
149 struct todo_list todo_list
= TODO_LIST_INIT
;
152 if (strbuf_read_file(&todo_list
.buf
, todo_file
, 0) < 0)
153 return error_errno(_("could not read '%s'."), todo_file
);
155 if (todo_list_parse_insn_buffer(the_repository
, todo_list
.buf
.buf
,
157 todo_list_release(&todo_list
);
158 return error(_("unusable todo list: '%s'"), todo_file
);
161 todo_list_add_exec_commands(&todo_list
, commands
);
162 res
= todo_list_write_to_file(the_repository
, &todo_list
,
163 todo_file
, NULL
, NULL
, -1, 0);
164 todo_list_release(&todo_list
);
167 return error_errno(_("could not write '%s'."), todo_file
);
171 static int rearrange_squash_in_todo_file(void)
173 const char *todo_file
= rebase_path_todo();
174 struct todo_list todo_list
= TODO_LIST_INIT
;
177 if (strbuf_read_file(&todo_list
.buf
, todo_file
, 0) < 0)
178 return error_errno(_("could not read '%s'."), todo_file
);
179 if (todo_list_parse_insn_buffer(the_repository
, todo_list
.buf
.buf
,
181 todo_list_release(&todo_list
);
182 return error(_("unusable todo list: '%s'"), todo_file
);
185 res
= todo_list_rearrange_squash(&todo_list
);
187 res
= todo_list_write_to_file(the_repository
, &todo_list
,
188 todo_file
, NULL
, NULL
, -1, 0);
190 todo_list_release(&todo_list
);
193 return error_errno(_("could not write '%s'."), todo_file
);
197 static int transform_todo_file(unsigned flags
)
199 const char *todo_file
= rebase_path_todo();
200 struct todo_list todo_list
= TODO_LIST_INIT
;
203 if (strbuf_read_file(&todo_list
.buf
, todo_file
, 0) < 0)
204 return error_errno(_("could not read '%s'."), todo_file
);
206 if (todo_list_parse_insn_buffer(the_repository
, todo_list
.buf
.buf
,
208 todo_list_release(&todo_list
);
209 return error(_("unusable todo list: '%s'"), todo_file
);
212 res
= todo_list_write_to_file(the_repository
, &todo_list
, todo_file
,
213 NULL
, NULL
, -1, flags
);
214 todo_list_release(&todo_list
);
217 return error_errno(_("could not write '%s'."), todo_file
);
221 static int edit_todo_file(unsigned flags
)
223 const char *todo_file
= rebase_path_todo();
224 struct todo_list todo_list
= TODO_LIST_INIT
,
225 new_todo
= TODO_LIST_INIT
;
228 if (strbuf_read_file(&todo_list
.buf
, todo_file
, 0) < 0)
229 return error_errno(_("could not read '%s'."), todo_file
);
231 strbuf_stripspace(&todo_list
.buf
, 1);
232 res
= edit_todo_list(the_repository
, &todo_list
, &new_todo
, NULL
, NULL
, flags
);
233 if (!res
&& todo_list_write_to_file(the_repository
, &new_todo
, todo_file
,
234 NULL
, NULL
, -1, flags
& ~(TODO_LIST_SHORTEN_IDS
)))
235 res
= error_errno(_("could not write '%s'"), todo_file
);
237 todo_list_release(&todo_list
);
238 todo_list_release(&new_todo
);
243 static int get_revision_ranges(struct commit
*upstream
, struct commit
*onto
,
244 const char **head_hash
,
245 char **revisions
, char **shortrevisions
)
247 struct commit
*base_rev
= upstream
? upstream
: onto
;
248 const char *shorthead
;
249 struct object_id orig_head
;
251 if (get_oid("HEAD", &orig_head
))
252 return error(_("no HEAD?"));
254 *head_hash
= find_unique_abbrev(&orig_head
, GIT_MAX_HEXSZ
);
255 *revisions
= xstrfmt("%s...%s", oid_to_hex(&base_rev
->object
.oid
),
258 shorthead
= find_unique_abbrev(&orig_head
, DEFAULT_ABBREV
);
261 const char *shortrev
;
263 shortrev
= find_unique_abbrev(&base_rev
->object
.oid
,
266 *shortrevisions
= xstrfmt("%s..%s", shortrev
, shorthead
);
268 *shortrevisions
= xstrdup(shorthead
);
273 static int init_basic_state(struct replay_opts
*opts
, const char *head_name
,
274 struct commit
*onto
, const char *orig_head
)
278 if (!is_directory(merge_dir()) && mkdir_in_gitdir(merge_dir()))
279 return error_errno(_("could not create temporary %s"), merge_dir());
281 delete_reflog("REBASE_HEAD");
283 interactive
= fopen(path_interactive(), "w");
285 return error_errno(_("could not mark as interactive"));
288 return write_basic_state(opts
, head_name
, onto
, orig_head
);
291 static void split_exec_commands(const char *cmd
, struct string_list
*commands
)
294 string_list_split(commands
, cmd
, '\n', -1);
296 /* rebase.c adds a new line to cmd after every command,
297 * so here the last command is always empty */
298 string_list_remove_empty_items(commands
, 0);
302 static int do_interactive_rebase(struct rebase_options
*opts
, unsigned flags
)
305 const char *head_hash
= NULL
;
306 char *revisions
= NULL
, *shortrevisions
= NULL
;
307 struct argv_array make_script_args
= ARGV_ARRAY_INIT
;
308 struct todo_list todo_list
= TODO_LIST_INIT
;
309 struct replay_opts replay
= get_replay_opts(opts
);
310 struct string_list commands
= STRING_LIST_INIT_DUP
;
312 if (prepare_branch_to_be_rebased(the_repository
, &replay
,
316 if (get_revision_ranges(opts
->upstream
, opts
->onto
, &head_hash
,
317 &revisions
, &shortrevisions
))
320 if (init_basic_state(&replay
,
321 opts
->head_name
? opts
->head_name
: "detached HEAD",
322 opts
->onto
, head_hash
)) {
324 free(shortrevisions
);
329 if (!opts
->upstream
&& opts
->squash_onto
)
330 write_file(path_squash_onto(), "%s\n",
331 oid_to_hex(opts
->squash_onto
));
333 argv_array_pushl(&make_script_args
, "", revisions
, NULL
);
334 if (opts
->restrict_revision
)
335 argv_array_push(&make_script_args
,
336 oid_to_hex(&opts
->restrict_revision
->object
.oid
));
338 ret
= sequencer_make_script(the_repository
, &todo_list
.buf
,
339 make_script_args
.argc
, make_script_args
.argv
,
343 error(_("could not generate todo list"));
346 if (todo_list_parse_insn_buffer(the_repository
, todo_list
.buf
.buf
,
348 BUG("unusable todo list");
350 split_exec_commands(opts
->cmd
, &commands
);
351 ret
= complete_action(the_repository
, &replay
, flags
,
352 shortrevisions
, opts
->onto_name
, opts
->onto
, head_hash
,
353 &commands
, opts
->autosquash
, &todo_list
);
356 string_list_clear(&commands
, 0);
358 free(shortrevisions
);
359 todo_list_release(&todo_list
);
360 argv_array_clear(&make_script_args
);
365 static int run_rebase_interactive(struct rebase_options
*opts
,
369 int abbreviate_commands
= 0, ret
= 0;
371 git_config_get_bool("rebase.abbreviatecommands", &abbreviate_commands
);
373 flags
|= opts
->keep_empty
? TODO_LIST_KEEP_EMPTY
: 0;
374 flags
|= abbreviate_commands
? TODO_LIST_ABBREVIATE_CMDS
: 0;
375 flags
|= opts
->rebase_merges
? TODO_LIST_REBASE_MERGES
: 0;
376 flags
|= opts
->rebase_cousins
> 0 ? TODO_LIST_REBASE_COUSINS
: 0;
377 flags
|= command
== ACTION_SHORTEN_OIDS
? TODO_LIST_SHORTEN_IDS
: 0;
381 if (!opts
->onto
&& !opts
->upstream
)
382 die(_("a base commit must be provided with --upstream or --onto"));
384 ret
= do_interactive_rebase(opts
, flags
);
388 struct string_list merge_rr
= STRING_LIST_INIT_DUP
;
390 rerere_clear(the_repository
, &merge_rr
);
393 case ACTION_CONTINUE
: {
394 struct replay_opts replay_opts
= get_replay_opts(opts
);
396 ret
= sequencer_continue(the_repository
, &replay_opts
);
399 case ACTION_EDIT_TODO
:
400 ret
= edit_todo_file(flags
);
402 case ACTION_SHOW_CURRENT_PATCH
: {
403 struct child_process cmd
= CHILD_PROCESS_INIT
;
406 argv_array_pushl(&cmd
.args
, "show", "REBASE_HEAD", "--", NULL
);
407 ret
= run_command(&cmd
);
411 case ACTION_SHORTEN_OIDS
:
412 case ACTION_EXPAND_OIDS
:
413 ret
= transform_todo_file(flags
);
415 case ACTION_CHECK_TODO_LIST
:
416 ret
= check_todo_list_from_file(the_repository
);
418 case ACTION_REARRANGE_SQUASH
:
419 ret
= rearrange_squash_in_todo_file();
421 case ACTION_ADD_EXEC
: {
422 struct string_list commands
= STRING_LIST_INIT_DUP
;
424 split_exec_commands(opts
->cmd
, &commands
);
425 ret
= add_exec_commands(&commands
);
426 string_list_clear(&commands
, 0);
430 BUG("invalid command '%d'", command
);
436 static const char * const builtin_rebase_interactive_usage
[] = {
437 N_("git rebase--interactive [<options>]"),
441 int cmd_rebase__interactive(int argc
, const char **argv
, const char *prefix
)
443 struct rebase_options opts
= REBASE_OPTIONS_INIT
;
444 struct object_id squash_onto
= null_oid
;
445 enum action command
= ACTION_NONE
;
446 struct option options
[] = {
447 OPT_NEGBIT(0, "ff", &opts
.flags
, N_("allow fast-forward"),
449 OPT_BOOL(0, "keep-empty", &opts
.keep_empty
, N_("keep empty commits")),
450 OPT_BOOL(0, "allow-empty-message", &opts
.allow_empty_message
,
451 N_("allow commits with empty messages")),
452 OPT_BOOL(0, "rebase-merges", &opts
.rebase_merges
, N_("rebase merge commits")),
453 OPT_BOOL(0, "rebase-cousins", &opts
.rebase_cousins
,
454 N_("keep original branch points of cousins")),
455 OPT_BOOL(0, "autosquash", &opts
.autosquash
,
456 N_("move commits that begin with squash!/fixup!")),
457 OPT_BOOL(0, "signoff", &opts
.signoff
, N_("sign commits")),
458 OPT_BIT('v', "verbose", &opts
.flags
,
459 N_("display a diffstat of what changed upstream"),
460 REBASE_NO_QUIET
| REBASE_VERBOSE
| REBASE_DIFFSTAT
),
461 OPT_CMDMODE(0, "continue", &command
, N_("continue rebase"),
463 OPT_CMDMODE(0, "skip", &command
, N_("skip commit"), ACTION_SKIP
),
464 OPT_CMDMODE(0, "edit-todo", &command
, N_("edit the todo list"),
466 OPT_CMDMODE(0, "show-current-patch", &command
, N_("show the current patch"),
467 ACTION_SHOW_CURRENT_PATCH
),
468 OPT_CMDMODE(0, "shorten-ids", &command
,
469 N_("shorten commit ids in the todo list"), ACTION_SHORTEN_OIDS
),
470 OPT_CMDMODE(0, "expand-ids", &command
,
471 N_("expand commit ids in the todo list"), ACTION_EXPAND_OIDS
),
472 OPT_CMDMODE(0, "check-todo-list", &command
,
473 N_("check the todo list"), ACTION_CHECK_TODO_LIST
),
474 OPT_CMDMODE(0, "rearrange-squash", &command
,
475 N_("rearrange fixup/squash lines"), ACTION_REARRANGE_SQUASH
),
476 OPT_CMDMODE(0, "add-exec-commands", &command
,
477 N_("insert exec commands in todo list"), ACTION_ADD_EXEC
),
478 { OPTION_CALLBACK
, 0, "onto", &opts
.onto
, N_("onto"), N_("onto"),
479 PARSE_OPT_NONEG
, parse_opt_commit
, 0 },
480 { OPTION_CALLBACK
, 0, "restrict-revision", &opts
.restrict_revision
,
481 N_("restrict-revision"), N_("restrict revision"),
482 PARSE_OPT_NONEG
, parse_opt_commit
, 0 },
483 { OPTION_CALLBACK
, 0, "squash-onto", &squash_onto
, N_("squash-onto"),
484 N_("squash onto"), PARSE_OPT_NONEG
, parse_opt_object_id
, 0 },
485 { OPTION_CALLBACK
, 0, "upstream", &opts
.upstream
, N_("upstream"),
486 N_("the upstream commit"), PARSE_OPT_NONEG
, parse_opt_commit
,
488 OPT_STRING(0, "head-name", &opts
.head_name
, N_("head-name"), N_("head name")),
489 { OPTION_STRING
, 'S', "gpg-sign", &opts
.gpg_sign_opt
, N_("key-id"),
490 N_("GPG-sign commits"),
491 PARSE_OPT_OPTARG
, NULL
, (intptr_t) "" },
492 OPT_STRING(0, "strategy", &opts
.strategy
, N_("strategy"),
493 N_("rebase strategy")),
494 OPT_STRING(0, "strategy-opts", &opts
.strategy_opts
, N_("strategy-opts"),
495 N_("strategy options")),
496 OPT_STRING(0, "switch-to", &opts
.switch_to
, N_("switch-to"),
497 N_("the branch or commit to checkout")),
498 OPT_STRING(0, "onto-name", &opts
.onto_name
, N_("onto-name"), N_("onto name")),
499 OPT_STRING(0, "cmd", &opts
.cmd
, N_("cmd"), N_("the command to run")),
500 OPT_RERERE_AUTOUPDATE(&opts
.allow_rerere_autoupdate
),
501 OPT_BOOL(0, "reschedule-failed-exec", &opts
.reschedule_failed_exec
,
502 N_("automatically re-schedule any `exec` that fails")),
506 opts
.rebase_cousins
= -1;
509 usage_with_options(builtin_rebase_interactive_usage
, options
);
511 argc
= parse_options(argc
, argv
, NULL
, options
,
512 builtin_rebase_interactive_usage
, PARSE_OPT_KEEP_ARGV0
);
514 if (!is_null_oid(&squash_onto
))
515 opts
.squash_onto
= &squash_onto
;
517 if (opts
.rebase_cousins
>= 0 && !opts
.rebase_merges
)
518 warning(_("--[no-]rebase-cousins has no effect without "
521 return !!run_rebase_interactive(&opts
, command
);
524 static int is_interactive(struct rebase_options
*opts
)
526 return opts
->type
== REBASE_INTERACTIVE
||
527 opts
->type
== REBASE_PRESERVE_MERGES
;
530 static void imply_interactive(struct rebase_options
*opts
, const char *option
)
532 switch (opts
->type
) {
534 die(_("%s requires an interactive rebase"), option
);
536 case REBASE_INTERACTIVE
:
537 case REBASE_PRESERVE_MERGES
:
540 /* we now implement --merge via --interactive */
542 opts
->type
= REBASE_INTERACTIVE
; /* implied */
547 /* Returns the filename prefixed by the state_dir */
548 static const char *state_dir_path(const char *filename
, struct rebase_options
*opts
)
550 static struct strbuf path
= STRBUF_INIT
;
551 static size_t prefix_len
;
554 strbuf_addf(&path
, "%s/", opts
->state_dir
);
555 prefix_len
= path
.len
;
558 strbuf_setlen(&path
, prefix_len
);
559 strbuf_addstr(&path
, filename
);
563 /* Read one file, then strip line endings */
564 static int read_one(const char *path
, struct strbuf
*buf
)
566 if (strbuf_read_file(buf
, path
, 0) < 0)
567 return error_errno(_("could not read '%s'"), path
);
568 strbuf_trim_trailing_newline(buf
);
572 /* Initialize the rebase options from the state directory. */
573 static int read_basic_state(struct rebase_options
*opts
)
575 struct strbuf head_name
= STRBUF_INIT
;
576 struct strbuf buf
= STRBUF_INIT
;
577 struct object_id oid
;
579 if (read_one(state_dir_path("head-name", opts
), &head_name
) ||
580 read_one(state_dir_path("onto", opts
), &buf
))
582 opts
->head_name
= starts_with(head_name
.buf
, "refs/") ?
583 xstrdup(head_name
.buf
) : NULL
;
584 strbuf_release(&head_name
);
585 if (get_oid(buf
.buf
, &oid
))
586 return error(_("could not get 'onto': '%s'"), buf
.buf
);
587 opts
->onto
= lookup_commit_or_die(&oid
, buf
.buf
);
590 * We always write to orig-head, but interactive rebase used to write to
591 * head. Fall back to reading from head to cover for the case that the
592 * user upgraded git with an ongoing interactive rebase.
595 if (file_exists(state_dir_path("orig-head", opts
))) {
596 if (read_one(state_dir_path("orig-head", opts
), &buf
))
598 } else if (read_one(state_dir_path("head", opts
), &buf
))
600 if (get_oid(buf
.buf
, &opts
->orig_head
))
601 return error(_("invalid orig-head: '%s'"), buf
.buf
);
603 if (file_exists(state_dir_path("quiet", opts
)))
604 opts
->flags
&= ~REBASE_NO_QUIET
;
606 opts
->flags
|= REBASE_NO_QUIET
;
608 if (file_exists(state_dir_path("verbose", opts
)))
609 opts
->flags
|= REBASE_VERBOSE
;
611 if (file_exists(state_dir_path("signoff", opts
))) {
613 opts
->flags
|= REBASE_FORCE
;
616 if (file_exists(state_dir_path("allow_rerere_autoupdate", opts
))) {
618 if (read_one(state_dir_path("allow_rerere_autoupdate", opts
),
621 if (!strcmp(buf
.buf
, "--rerere-autoupdate"))
622 opts
->allow_rerere_autoupdate
= RERERE_AUTOUPDATE
;
623 else if (!strcmp(buf
.buf
, "--no-rerere-autoupdate"))
624 opts
->allow_rerere_autoupdate
= RERERE_NOAUTOUPDATE
;
626 warning(_("ignoring invalid allow_rerere_autoupdate: "
630 if (file_exists(state_dir_path("gpg_sign_opt", opts
))) {
632 if (read_one(state_dir_path("gpg_sign_opt", opts
),
635 free(opts
->gpg_sign_opt
);
636 opts
->gpg_sign_opt
= xstrdup(buf
.buf
);
639 if (file_exists(state_dir_path("strategy", opts
))) {
641 if (read_one(state_dir_path("strategy", opts
), &buf
))
643 free(opts
->strategy
);
644 opts
->strategy
= xstrdup(buf
.buf
);
647 if (file_exists(state_dir_path("strategy_opts", opts
))) {
649 if (read_one(state_dir_path("strategy_opts", opts
), &buf
))
651 free(opts
->strategy_opts
);
652 opts
->strategy_opts
= xstrdup(buf
.buf
);
655 strbuf_release(&buf
);
660 static int rebase_write_basic_state(struct rebase_options
*opts
)
662 write_file(state_dir_path("head-name", opts
), "%s",
663 opts
->head_name
? opts
->head_name
: "detached HEAD");
664 write_file(state_dir_path("onto", opts
), "%s",
665 opts
->onto
? oid_to_hex(&opts
->onto
->object
.oid
) : "");
666 write_file(state_dir_path("orig-head", opts
), "%s",
667 oid_to_hex(&opts
->orig_head
));
668 write_file(state_dir_path("quiet", opts
), "%s",
669 opts
->flags
& REBASE_NO_QUIET
? "" : "t");
670 if (opts
->flags
& REBASE_VERBOSE
)
671 write_file(state_dir_path("verbose", opts
), "%s", "");
673 write_file(state_dir_path("strategy", opts
), "%s",
675 if (opts
->strategy_opts
)
676 write_file(state_dir_path("strategy_opts", opts
), "%s",
677 opts
->strategy_opts
);
678 if (opts
->allow_rerere_autoupdate
> 0)
679 write_file(state_dir_path("allow_rerere_autoupdate", opts
),
680 "-%s-rerere-autoupdate",
681 opts
->allow_rerere_autoupdate
== RERERE_AUTOUPDATE
?
683 if (opts
->gpg_sign_opt
)
684 write_file(state_dir_path("gpg_sign_opt", opts
), "%s",
687 write_file(state_dir_path("strategy", opts
), "--signoff");
692 static int apply_autostash(struct rebase_options
*opts
)
694 const char *path
= state_dir_path("autostash", opts
);
695 struct strbuf autostash
= STRBUF_INIT
;
696 struct child_process stash_apply
= CHILD_PROCESS_INIT
;
698 if (!file_exists(path
))
701 if (read_one(path
, &autostash
))
702 return error(_("Could not read '%s'"), path
);
703 /* Ensure that the hash is not mistaken for a number */
704 strbuf_addstr(&autostash
, "^0");
705 argv_array_pushl(&stash_apply
.args
,
706 "stash", "apply", autostash
.buf
, NULL
);
707 stash_apply
.git_cmd
= 1;
708 stash_apply
.no_stderr
= stash_apply
.no_stdout
=
709 stash_apply
.no_stdin
= 1;
710 if (!run_command(&stash_apply
))
711 printf(_("Applied autostash.\n"));
713 struct argv_array args
= ARGV_ARRAY_INIT
;
716 argv_array_pushl(&args
,
717 "stash", "store", "-m", "autostash", "-q",
718 autostash
.buf
, NULL
);
719 if (run_command_v_opt(args
.argv
, RUN_GIT_CMD
))
720 res
= error(_("Cannot store %s"), autostash
.buf
);
721 argv_array_clear(&args
);
722 strbuf_release(&autostash
);
727 _("Applying autostash resulted in conflicts.\n"
728 "Your changes are safe in the stash.\n"
729 "You can run \"git stash pop\" or \"git stash drop\" "
733 strbuf_release(&autostash
);
737 static int finish_rebase(struct rebase_options
*opts
)
739 struct strbuf dir
= STRBUF_INIT
;
740 const char *argv_gc_auto
[] = { "gc", "--auto", NULL
};
742 delete_ref(NULL
, "REBASE_HEAD", NULL
, REF_NO_DEREF
);
743 apply_autostash(opts
);
744 close_all_packs(the_repository
->objects
);
746 * We ignore errors in 'gc --auto', since the
747 * user should see them.
749 run_command_v_opt(argv_gc_auto
, RUN_GIT_CMD
);
750 strbuf_addstr(&dir
, opts
->state_dir
);
751 remove_dir_recursively(&dir
, 0);
752 strbuf_release(&dir
);
757 static struct commit
*peel_committish(const char *name
)
760 struct object_id oid
;
762 if (get_oid(name
, &oid
))
764 obj
= parse_object(the_repository
, &oid
);
765 return (struct commit
*)peel_to_type(name
, 0, obj
, OBJ_COMMIT
);
768 static void add_var(struct strbuf
*buf
, const char *name
, const char *value
)
771 strbuf_addf(buf
, "unset %s; ", name
);
773 strbuf_addf(buf
, "%s=", name
);
774 sq_quote_buf(buf
, value
);
775 strbuf_addstr(buf
, "; ");
779 #define GIT_REFLOG_ACTION_ENVIRONMENT "GIT_REFLOG_ACTION"
781 #define RESET_HEAD_DETACH (1<<0)
782 #define RESET_HEAD_HARD (1<<1)
783 #define RESET_HEAD_RUN_POST_CHECKOUT_HOOK (1<<2)
784 #define RESET_HEAD_REFS_ONLY (1<<3)
785 #define RESET_ORIG_HEAD (1<<4)
787 static int reset_head(struct object_id
*oid
, const char *action
,
788 const char *switch_to_branch
, unsigned flags
,
789 const char *reflog_orig_head
, const char *reflog_head
)
791 unsigned detach_head
= flags
& RESET_HEAD_DETACH
;
792 unsigned reset_hard
= flags
& RESET_HEAD_HARD
;
793 unsigned run_hook
= flags
& RESET_HEAD_RUN_POST_CHECKOUT_HOOK
;
794 unsigned refs_only
= flags
& RESET_HEAD_REFS_ONLY
;
795 unsigned update_orig_head
= flags
& RESET_ORIG_HEAD
;
796 struct object_id head_oid
;
797 struct tree_desc desc
[2] = { { NULL
}, { NULL
} };
798 struct lock_file lock
= LOCK_INIT
;
799 struct unpack_trees_options unpack_tree_opts
;
801 const char *reflog_action
;
802 struct strbuf msg
= STRBUF_INIT
;
804 struct object_id
*orig
= NULL
, oid_orig
,
805 *old_orig
= NULL
, oid_old_orig
;
808 if (switch_to_branch
&& !starts_with(switch_to_branch
, "refs/"))
809 BUG("Not a fully qualified branch: '%s'", switch_to_branch
);
811 if (!refs_only
&& hold_locked_index(&lock
, LOCK_REPORT_ON_ERROR
) < 0) {
813 goto leave_reset_head
;
816 if ((!oid
|| !reset_hard
) && get_oid("HEAD", &head_oid
)) {
817 ret
= error(_("could not determine HEAD revision"));
818 goto leave_reset_head
;
825 goto reset_head_refs
;
827 memset(&unpack_tree_opts
, 0, sizeof(unpack_tree_opts
));
828 setup_unpack_trees_porcelain(&unpack_tree_opts
, action
);
829 unpack_tree_opts
.head_idx
= 1;
830 unpack_tree_opts
.src_index
= the_repository
->index
;
831 unpack_tree_opts
.dst_index
= the_repository
->index
;
832 unpack_tree_opts
.fn
= reset_hard
? oneway_merge
: twoway_merge
;
833 unpack_tree_opts
.update
= 1;
834 unpack_tree_opts
.merge
= 1;
836 unpack_tree_opts
.reset
= 1;
838 if (repo_read_index_unmerged(the_repository
) < 0) {
839 ret
= error(_("could not read index"));
840 goto leave_reset_head
;
843 if (!reset_hard
&& !fill_tree_descriptor(&desc
[nr
++], &head_oid
)) {
844 ret
= error(_("failed to find tree of %s"),
845 oid_to_hex(&head_oid
));
846 goto leave_reset_head
;
849 if (!fill_tree_descriptor(&desc
[nr
++], oid
)) {
850 ret
= error(_("failed to find tree of %s"), oid_to_hex(oid
));
851 goto leave_reset_head
;
854 if (unpack_trees(nr
, desc
, &unpack_tree_opts
)) {
856 goto leave_reset_head
;
859 tree
= parse_tree_indirect(oid
);
860 prime_cache_tree(the_repository
, the_repository
->index
, tree
);
862 if (write_locked_index(the_repository
->index
, &lock
, COMMIT_LOCK
) < 0) {
863 ret
= error(_("could not write index"));
864 goto leave_reset_head
;
868 reflog_action
= getenv(GIT_REFLOG_ACTION_ENVIRONMENT
);
869 strbuf_addf(&msg
, "%s: ", reflog_action
? reflog_action
: "rebase");
870 prefix_len
= msg
.len
;
872 if (update_orig_head
) {
873 if (!get_oid("ORIG_HEAD", &oid_old_orig
))
874 old_orig
= &oid_old_orig
;
875 if (!get_oid("HEAD", &oid_orig
)) {
877 if (!reflog_orig_head
) {
878 strbuf_addstr(&msg
, "updating ORIG_HEAD");
879 reflog_orig_head
= msg
.buf
;
881 update_ref(reflog_orig_head
, "ORIG_HEAD", orig
,
882 old_orig
, 0, UPDATE_REFS_MSG_ON_ERR
);
884 delete_ref(NULL
, "ORIG_HEAD", old_orig
, 0);
888 strbuf_setlen(&msg
, prefix_len
);
889 strbuf_addstr(&msg
, "updating HEAD");
890 reflog_head
= msg
.buf
;
892 if (!switch_to_branch
)
893 ret
= update_ref(reflog_head
, "HEAD", oid
, orig
,
894 detach_head
? REF_NO_DEREF
: 0,
895 UPDATE_REFS_MSG_ON_ERR
);
897 ret
= update_ref(reflog_head
, switch_to_branch
, oid
,
898 NULL
, 0, UPDATE_REFS_MSG_ON_ERR
);
900 ret
= create_symref("HEAD", switch_to_branch
,
904 run_hook_le(NULL
, "post-checkout",
905 oid_to_hex(orig
? orig
: &null_oid
),
906 oid_to_hex(oid
), "1", NULL
);
909 strbuf_release(&msg
);
910 rollback_lock_file(&lock
);
912 free((void *)desc
[--nr
].buffer
);
916 static int move_to_original_branch(struct rebase_options
*opts
)
918 struct strbuf orig_head_reflog
= STRBUF_INIT
, head_reflog
= STRBUF_INIT
;
921 if (!opts
->head_name
)
922 return 0; /* nothing to move back to */
925 BUG("move_to_original_branch without onto");
927 strbuf_addf(&orig_head_reflog
, "rebase finished: %s onto %s",
928 opts
->head_name
, oid_to_hex(&opts
->onto
->object
.oid
));
929 strbuf_addf(&head_reflog
, "rebase finished: returning to %s",
931 ret
= reset_head(NULL
, "", opts
->head_name
, RESET_HEAD_REFS_ONLY
,
932 orig_head_reflog
.buf
, head_reflog
.buf
);
934 strbuf_release(&orig_head_reflog
);
935 strbuf_release(&head_reflog
);
939 static const char *resolvemsg
=
940 N_("Resolve all conflicts manually, mark them as resolved with\n"
941 "\"git add/rm <conflicted_files>\", then run \"git rebase --continue\".\n"
942 "You can instead skip this commit: run \"git rebase --skip\".\n"
943 "To abort and get back to the state before \"git rebase\", run "
944 "\"git rebase --abort\".");
946 static int run_am(struct rebase_options
*opts
)
948 struct child_process am
= CHILD_PROCESS_INIT
;
949 struct child_process format_patch
= CHILD_PROCESS_INIT
;
950 struct strbuf revisions
= STRBUF_INIT
;
952 char *rebased_patches
;
955 argv_array_push(&am
.args
, "am");
957 if (opts
->action
&& !strcmp("continue", opts
->action
)) {
958 argv_array_push(&am
.args
, "--resolved");
959 argv_array_pushf(&am
.args
, "--resolvemsg=%s", resolvemsg
);
960 if (opts
->gpg_sign_opt
)
961 argv_array_push(&am
.args
, opts
->gpg_sign_opt
);
962 status
= run_command(&am
);
966 return move_to_original_branch(opts
);
968 if (opts
->action
&& !strcmp("skip", opts
->action
)) {
969 argv_array_push(&am
.args
, "--skip");
970 argv_array_pushf(&am
.args
, "--resolvemsg=%s", resolvemsg
);
971 status
= run_command(&am
);
975 return move_to_original_branch(opts
);
977 if (opts
->action
&& !strcmp("show-current-patch", opts
->action
)) {
978 argv_array_push(&am
.args
, "--show-current-patch");
979 return run_command(&am
);
982 strbuf_addf(&revisions
, "%s...%s",
983 oid_to_hex(opts
->root
?
984 /* this is now equivalent to !opts->upstream */
985 &opts
->onto
->object
.oid
:
986 &opts
->upstream
->object
.oid
),
987 oid_to_hex(&opts
->orig_head
));
989 rebased_patches
= xstrdup(git_path("rebased-patches"));
990 format_patch
.out
= open(rebased_patches
,
991 O_WRONLY
| O_CREAT
| O_TRUNC
, 0666);
992 if (format_patch
.out
< 0) {
993 status
= error_errno(_("could not open '%s' for writing"),
995 free(rebased_patches
);
996 argv_array_clear(&am
.args
);
1000 format_patch
.git_cmd
= 1;
1001 argv_array_pushl(&format_patch
.args
, "format-patch", "-k", "--stdout",
1002 "--full-index", "--cherry-pick", "--right-only",
1003 "--src-prefix=a/", "--dst-prefix=b/", "--no-renames",
1004 "--no-cover-letter", "--pretty=mboxrd", "--topo-order", NULL
);
1005 if (opts
->git_format_patch_opt
.len
)
1006 argv_array_split(&format_patch
.args
,
1007 opts
->git_format_patch_opt
.buf
);
1008 argv_array_push(&format_patch
.args
, revisions
.buf
);
1009 if (opts
->restrict_revision
)
1010 argv_array_pushf(&format_patch
.args
, "^%s",
1011 oid_to_hex(&opts
->restrict_revision
->object
.oid
));
1013 status
= run_command(&format_patch
);
1015 unlink(rebased_patches
);
1016 free(rebased_patches
);
1017 argv_array_clear(&am
.args
);
1019 reset_head(&opts
->orig_head
, "checkout", opts
->head_name
, 0,
1021 error(_("\ngit encountered an error while preparing the "
1022 "patches to replay\n"
1023 "these revisions:\n"
1025 "As a result, git cannot rebase them."),
1028 strbuf_release(&revisions
);
1031 strbuf_release(&revisions
);
1033 am
.in
= open(rebased_patches
, O_RDONLY
);
1035 status
= error_errno(_("could not open '%s' for reading"),
1037 free(rebased_patches
);
1038 argv_array_clear(&am
.args
);
1042 argv_array_pushv(&am
.args
, opts
->git_am_opts
.argv
);
1043 argv_array_push(&am
.args
, "--rebasing");
1044 argv_array_pushf(&am
.args
, "--resolvemsg=%s", resolvemsg
);
1045 argv_array_push(&am
.args
, "--patch-format=mboxrd");
1046 if (opts
->allow_rerere_autoupdate
== RERERE_AUTOUPDATE
)
1047 argv_array_push(&am
.args
, "--rerere-autoupdate");
1048 else if (opts
->allow_rerere_autoupdate
== RERERE_NOAUTOUPDATE
)
1049 argv_array_push(&am
.args
, "--no-rerere-autoupdate");
1050 if (opts
->gpg_sign_opt
)
1051 argv_array_push(&am
.args
, opts
->gpg_sign_opt
);
1052 status
= run_command(&am
);
1053 unlink(rebased_patches
);
1054 free(rebased_patches
);
1057 return move_to_original_branch(opts
);
1060 if (is_directory(opts
->state_dir
))
1061 rebase_write_basic_state(opts
);
1066 static int run_specific_rebase(struct rebase_options
*opts
, enum action action
)
1068 const char *argv
[] = { NULL
, NULL
};
1069 struct strbuf script_snippet
= STRBUF_INIT
, buf
= STRBUF_INIT
;
1071 const char *backend
, *backend_func
;
1073 if (opts
->type
== REBASE_INTERACTIVE
) {
1074 /* Run builtin interactive rebase */
1075 setenv("GIT_CHERRY_PICK_HELP", resolvemsg
, 1);
1076 if (!(opts
->flags
& REBASE_INTERACTIVE_EXPLICIT
)) {
1077 setenv("GIT_SEQUENCE_EDITOR", ":", 1);
1078 opts
->autosquash
= 0;
1080 if (opts
->gpg_sign_opt
) {
1081 /* remove the leading "-S" */
1082 char *tmp
= xstrdup(opts
->gpg_sign_opt
+ 2);
1083 free(opts
->gpg_sign_opt
);
1084 opts
->gpg_sign_opt
= tmp
;
1087 status
= run_rebase_interactive(opts
, action
);
1088 goto finished_rebase
;
1091 if (opts
->type
== REBASE_AM
) {
1092 status
= run_am(opts
);
1093 goto finished_rebase
;
1096 add_var(&script_snippet
, "GIT_DIR", absolute_path(get_git_dir()));
1097 add_var(&script_snippet
, "state_dir", opts
->state_dir
);
1099 add_var(&script_snippet
, "upstream_name", opts
->upstream_name
);
1100 add_var(&script_snippet
, "upstream", opts
->upstream
?
1101 oid_to_hex(&opts
->upstream
->object
.oid
) : NULL
);
1102 add_var(&script_snippet
, "head_name",
1103 opts
->head_name
? opts
->head_name
: "detached HEAD");
1104 add_var(&script_snippet
, "orig_head", oid_to_hex(&opts
->orig_head
));
1105 add_var(&script_snippet
, "onto", opts
->onto
?
1106 oid_to_hex(&opts
->onto
->object
.oid
) : NULL
);
1107 add_var(&script_snippet
, "onto_name", opts
->onto_name
);
1108 add_var(&script_snippet
, "revisions", opts
->revisions
);
1109 add_var(&script_snippet
, "restrict_revision", opts
->restrict_revision
?
1110 oid_to_hex(&opts
->restrict_revision
->object
.oid
) : NULL
);
1111 add_var(&script_snippet
, "GIT_QUIET",
1112 opts
->flags
& REBASE_NO_QUIET
? "" : "t");
1113 sq_quote_argv_pretty(&buf
, opts
->git_am_opts
.argv
);
1114 add_var(&script_snippet
, "git_am_opt", buf
.buf
);
1115 strbuf_release(&buf
);
1116 add_var(&script_snippet
, "verbose",
1117 opts
->flags
& REBASE_VERBOSE
? "t" : "");
1118 add_var(&script_snippet
, "diffstat",
1119 opts
->flags
& REBASE_DIFFSTAT
? "t" : "");
1120 add_var(&script_snippet
, "force_rebase",
1121 opts
->flags
& REBASE_FORCE
? "t" : "");
1122 if (opts
->switch_to
)
1123 add_var(&script_snippet
, "switch_to", opts
->switch_to
);
1124 add_var(&script_snippet
, "action", opts
->action
? opts
->action
: "");
1125 add_var(&script_snippet
, "signoff", opts
->signoff
? "--signoff" : "");
1126 add_var(&script_snippet
, "allow_rerere_autoupdate",
1127 opts
->allow_rerere_autoupdate
?
1128 opts
->allow_rerere_autoupdate
== RERERE_AUTOUPDATE
?
1129 "--rerere-autoupdate" : "--no-rerere-autoupdate" : "");
1130 add_var(&script_snippet
, "keep_empty", opts
->keep_empty
? "yes" : "");
1131 add_var(&script_snippet
, "autosquash", opts
->autosquash
? "t" : "");
1132 add_var(&script_snippet
, "gpg_sign_opt", opts
->gpg_sign_opt
);
1133 add_var(&script_snippet
, "cmd", opts
->cmd
);
1134 add_var(&script_snippet
, "allow_empty_message",
1135 opts
->allow_empty_message
? "--allow-empty-message" : "");
1136 add_var(&script_snippet
, "rebase_merges",
1137 opts
->rebase_merges
? "t" : "");
1138 add_var(&script_snippet
, "rebase_cousins",
1139 opts
->rebase_cousins
? "t" : "");
1140 add_var(&script_snippet
, "strategy", opts
->strategy
);
1141 add_var(&script_snippet
, "strategy_opts", opts
->strategy_opts
);
1142 add_var(&script_snippet
, "rebase_root", opts
->root
? "t" : "");
1143 add_var(&script_snippet
, "squash_onto",
1144 opts
->squash_onto
? oid_to_hex(opts
->squash_onto
) : "");
1145 add_var(&script_snippet
, "git_format_patch_opt",
1146 opts
->git_format_patch_opt
.buf
);
1148 if (is_interactive(opts
) &&
1149 !(opts
->flags
& REBASE_INTERACTIVE_EXPLICIT
)) {
1150 strbuf_addstr(&script_snippet
,
1151 "GIT_SEQUENCE_EDITOR=:; export GIT_SEQUENCE_EDITOR; ");
1152 opts
->autosquash
= 0;
1155 switch (opts
->type
) {
1157 backend
= "git-rebase--am";
1158 backend_func
= "git_rebase__am";
1160 case REBASE_PRESERVE_MERGES
:
1161 backend
= "git-rebase--preserve-merges";
1162 backend_func
= "git_rebase__preserve_merges";
1165 BUG("Unhandled rebase type %d", opts
->type
);
1169 strbuf_addf(&script_snippet
,
1170 ". git-sh-setup && . git-rebase--common &&"
1171 " . %s && %s", backend
, backend_func
);
1172 argv
[0] = script_snippet
.buf
;
1174 status
= run_command_v_opt(argv
, RUN_USING_SHELL
);
1176 if (opts
->dont_finish_rebase
)
1178 else if (opts
->type
== REBASE_INTERACTIVE
)
1179 ; /* interactive rebase cleans up after itself */
1180 else if (status
== 0) {
1181 if (!file_exists(state_dir_path("stopped-sha", opts
)))
1182 finish_rebase(opts
);
1183 } else if (status
== 2) {
1184 struct strbuf dir
= STRBUF_INIT
;
1186 apply_autostash(opts
);
1187 strbuf_addstr(&dir
, opts
->state_dir
);
1188 remove_dir_recursively(&dir
, 0);
1189 strbuf_release(&dir
);
1190 die("Nothing to do");
1193 strbuf_release(&script_snippet
);
1195 return status
? -1 : 0;
1198 static int rebase_config(const char *var
, const char *value
, void *data
)
1200 struct rebase_options
*opts
= data
;
1202 if (!strcmp(var
, "rebase.stat")) {
1203 if (git_config_bool(var
, value
))
1204 opts
->flags
|= REBASE_DIFFSTAT
;
1206 opts
->flags
&= !REBASE_DIFFSTAT
;
1210 if (!strcmp(var
, "rebase.autosquash")) {
1211 opts
->autosquash
= git_config_bool(var
, value
);
1215 if (!strcmp(var
, "commit.gpgsign")) {
1216 free(opts
->gpg_sign_opt
);
1217 opts
->gpg_sign_opt
= git_config_bool(var
, value
) ?
1218 xstrdup("-S") : NULL
;
1222 if (!strcmp(var
, "rebase.autostash")) {
1223 opts
->autostash
= git_config_bool(var
, value
);
1227 if (!strcmp(var
, "rebase.reschedulefailedexec")) {
1228 opts
->reschedule_failed_exec
= git_config_bool(var
, value
);
1232 if (!strcmp(var
, "rebase.usebuiltin")) {
1233 opts
->use_legacy_rebase
= !git_config_bool(var
, value
);
1237 return git_default_config(var
, value
, data
);
1241 * Determines whether the commits in from..to are linear, i.e. contain
1242 * no merge commits. This function *expects* `from` to be an ancestor of
1245 static int is_linear_history(struct commit
*from
, struct commit
*to
)
1247 while (to
&& to
!= from
) {
1251 if (to
->parents
->next
)
1253 to
= to
->parents
->item
;
1258 static int can_fast_forward(struct commit
*onto
, struct object_id
*head_oid
,
1259 struct object_id
*merge_base
)
1261 struct commit
*head
= lookup_commit(the_repository
, head_oid
);
1262 struct commit_list
*merge_bases
;
1268 merge_bases
= get_merge_bases(onto
, head
);
1269 if (merge_bases
&& !merge_bases
->next
) {
1270 oidcpy(merge_base
, &merge_bases
->item
->object
.oid
);
1271 res
= oideq(merge_base
, &onto
->object
.oid
);
1273 oidcpy(merge_base
, &null_oid
);
1276 free_commit_list(merge_bases
);
1277 return res
&& is_linear_history(onto
, head
);
1280 /* -i followed by -m is still -i */
1281 static int parse_opt_merge(const struct option
*opt
, const char *arg
, int unset
)
1283 struct rebase_options
*opts
= opt
->value
;
1285 BUG_ON_OPT_NEG(unset
);
1286 BUG_ON_OPT_ARG(arg
);
1288 if (!is_interactive(opts
))
1289 opts
->type
= REBASE_MERGE
;
1294 /* -i followed by -p is still explicitly interactive, but -p alone is not */
1295 static int parse_opt_interactive(const struct option
*opt
, const char *arg
,
1298 struct rebase_options
*opts
= opt
->value
;
1300 BUG_ON_OPT_NEG(unset
);
1301 BUG_ON_OPT_ARG(arg
);
1303 opts
->type
= REBASE_INTERACTIVE
;
1304 opts
->flags
|= REBASE_INTERACTIVE_EXPLICIT
;
1309 static void NORETURN
error_on_missing_default_upstream(void)
1311 struct branch
*current_branch
= branch_get(NULL
);
1314 "Please specify which branch you want to rebase against.\n"
1315 "See git-rebase(1) for details.\n"
1317 " git rebase '<branch>'\n"
1319 current_branch
? _("There is no tracking information for "
1320 "the current branch.") :
1321 _("You are not currently on a branch."));
1323 if (current_branch
) {
1324 const char *remote
= current_branch
->remote_name
;
1327 remote
= _("<remote>");
1329 printf(_("If you wish to set tracking information for this "
1330 "branch you can do so with:\n"
1332 " git branch --set-upstream-to=%s/<branch> %s\n"
1334 remote
, current_branch
->name
);
1339 static void set_reflog_action(struct rebase_options
*options
)
1342 struct strbuf buf
= STRBUF_INIT
;
1344 if (!is_interactive(options
))
1347 env
= getenv(GIT_REFLOG_ACTION_ENVIRONMENT
);
1348 if (env
&& strcmp("rebase", env
))
1349 return; /* only override it if it is "rebase" */
1351 strbuf_addf(&buf
, "rebase -i (%s)", options
->action
);
1352 setenv(GIT_REFLOG_ACTION_ENVIRONMENT
, buf
.buf
, 1);
1353 strbuf_release(&buf
);
1356 static int check_exec_cmd(const char *cmd
)
1358 if (strchr(cmd
, '\n'))
1359 return error(_("exec commands cannot contain newlines"));
1361 /* Does the command consist purely of whitespace? */
1362 if (!cmd
[strspn(cmd
, " \t\r\f\v")])
1363 return error(_("empty exec command"));
1369 int cmd_rebase(int argc
, const char **argv
, const char *prefix
)
1371 struct rebase_options options
= REBASE_OPTIONS_INIT
;
1372 const char *branch_name
;
1373 int ret
, flags
, total_argc
, in_progress
= 0;
1374 int ok_to_skip_pre_rebase
= 0;
1375 struct strbuf msg
= STRBUF_INIT
;
1376 struct strbuf revisions
= STRBUF_INIT
;
1377 struct strbuf buf
= STRBUF_INIT
;
1378 struct object_id merge_base
;
1379 enum action action
= ACTION_NONE
;
1380 const char *gpg_sign
= NULL
;
1381 struct string_list exec
= STRING_LIST_INIT_NODUP
;
1382 const char *rebase_merges
= NULL
;
1383 int fork_point
= -1;
1384 struct string_list strategy_options
= STRING_LIST_INIT_NODUP
;
1385 struct object_id squash_onto
;
1386 char *squash_onto_name
= NULL
;
1387 struct option builtin_rebase_options
[] = {
1388 OPT_STRING(0, "onto", &options
.onto_name
,
1390 N_("rebase onto given branch instead of upstream")),
1391 OPT_BOOL(0, "no-verify", &ok_to_skip_pre_rebase
,
1392 N_("allow pre-rebase hook to run")),
1393 OPT_NEGBIT('q', "quiet", &options
.flags
,
1394 N_("be quiet. implies --no-stat"),
1395 REBASE_NO_QUIET
| REBASE_VERBOSE
| REBASE_DIFFSTAT
),
1396 OPT_BIT('v', "verbose", &options
.flags
,
1397 N_("display a diffstat of what changed upstream"),
1398 REBASE_NO_QUIET
| REBASE_VERBOSE
| REBASE_DIFFSTAT
),
1399 {OPTION_NEGBIT
, 'n', "no-stat", &options
.flags
, NULL
,
1400 N_("do not show diffstat of what changed upstream"),
1401 PARSE_OPT_NOARG
, NULL
, REBASE_DIFFSTAT
},
1402 OPT_BOOL(0, "signoff", &options
.signoff
,
1403 N_("add a Signed-off-by: line to each commit")),
1404 OPT_PASSTHRU_ARGV(0, "ignore-whitespace", &options
.git_am_opts
,
1405 NULL
, N_("passed to 'git am'"),
1407 OPT_PASSTHRU_ARGV(0, "committer-date-is-author-date",
1408 &options
.git_am_opts
, NULL
,
1409 N_("passed to 'git am'"), PARSE_OPT_NOARG
),
1410 OPT_PASSTHRU_ARGV(0, "ignore-date", &options
.git_am_opts
, NULL
,
1411 N_("passed to 'git am'"), PARSE_OPT_NOARG
),
1412 OPT_PASSTHRU_ARGV('C', NULL
, &options
.git_am_opts
, N_("n"),
1413 N_("passed to 'git apply'"), 0),
1414 OPT_PASSTHRU_ARGV(0, "whitespace", &options
.git_am_opts
,
1415 N_("action"), N_("passed to 'git apply'"), 0),
1416 OPT_BIT('f', "force-rebase", &options
.flags
,
1417 N_("cherry-pick all commits, even if unchanged"),
1419 OPT_BIT(0, "no-ff", &options
.flags
,
1420 N_("cherry-pick all commits, even if unchanged"),
1422 OPT_CMDMODE(0, "continue", &action
, N_("continue"),
1424 OPT_CMDMODE(0, "skip", &action
,
1425 N_("skip current patch and continue"), ACTION_SKIP
),
1426 OPT_CMDMODE(0, "abort", &action
,
1427 N_("abort and check out the original branch"),
1429 OPT_CMDMODE(0, "quit", &action
,
1430 N_("abort but keep HEAD where it is"), ACTION_QUIT
),
1431 OPT_CMDMODE(0, "edit-todo", &action
, N_("edit the todo list "
1432 "during an interactive rebase"), ACTION_EDIT_TODO
),
1433 OPT_CMDMODE(0, "show-current-patch", &action
,
1434 N_("show the patch file being applied or merged"),
1435 ACTION_SHOW_CURRENT_PATCH
),
1436 { OPTION_CALLBACK
, 'm', "merge", &options
, NULL
,
1437 N_("use merging strategies to rebase"),
1438 PARSE_OPT_NOARG
| PARSE_OPT_NONEG
,
1440 { OPTION_CALLBACK
, 'i', "interactive", &options
, NULL
,
1441 N_("let the user edit the list of commits to rebase"),
1442 PARSE_OPT_NOARG
| PARSE_OPT_NONEG
,
1443 parse_opt_interactive
},
1444 OPT_SET_INT('p', "preserve-merges", &options
.type
,
1445 N_("(DEPRECATED) try to recreate merges instead of "
1446 "ignoring them"), REBASE_PRESERVE_MERGES
),
1447 OPT_RERERE_AUTOUPDATE(&options
.allow_rerere_autoupdate
),
1448 OPT_BOOL('k', "keep-empty", &options
.keep_empty
,
1449 N_("preserve empty commits during rebase")),
1450 OPT_BOOL(0, "autosquash", &options
.autosquash
,
1451 N_("move commits that begin with "
1452 "squash!/fixup! under -i")),
1453 { OPTION_STRING
, 'S', "gpg-sign", &gpg_sign
, N_("key-id"),
1454 N_("GPG-sign commits"),
1455 PARSE_OPT_OPTARG
, NULL
, (intptr_t) "" },
1456 OPT_BOOL(0, "autostash", &options
.autostash
,
1457 N_("automatically stash/stash pop before and after")),
1458 OPT_STRING_LIST('x', "exec", &exec
, N_("exec"),
1459 N_("add exec lines after each commit of the "
1461 OPT_BOOL(0, "allow-empty-message",
1462 &options
.allow_empty_message
,
1463 N_("allow rebasing commits with empty messages")),
1464 {OPTION_STRING
, 'r', "rebase-merges", &rebase_merges
,
1466 N_("try to rebase merges instead of skipping them"),
1467 PARSE_OPT_OPTARG
, NULL
, (intptr_t)""},
1468 OPT_BOOL(0, "fork-point", &fork_point
,
1469 N_("use 'merge-base --fork-point' to refine upstream")),
1470 OPT_STRING('s', "strategy", &options
.strategy
,
1471 N_("strategy"), N_("use the given merge strategy")),
1472 OPT_STRING_LIST('X', "strategy-option", &strategy_options
,
1474 N_("pass the argument through to the merge "
1476 OPT_BOOL(0, "root", &options
.root
,
1477 N_("rebase all reachable commits up to the root(s)")),
1478 OPT_BOOL(0, "reschedule-failed-exec",
1479 &options
.reschedule_failed_exec
,
1480 N_("automatically re-schedule any `exec` that fails")),
1485 if (argc
== 2 && !strcmp(argv
[1], "-h"))
1486 usage_with_options(builtin_rebase_usage
,
1487 builtin_rebase_options
);
1489 prefix
= setup_git_directory();
1490 trace_repo_setup(prefix
);
1493 options
.allow_empty_message
= 1;
1494 git_config(rebase_config
, &options
);
1496 if (options
.use_legacy_rebase
||
1497 !git_env_bool("GIT_TEST_REBASE_USE_BUILTIN", -1))
1498 warning(_("the rebase.useBuiltin support has been removed!\n"
1499 "See its entry in 'git help config' for details."));
1502 strbuf_addf(&buf
, "%s/applying", apply_dir());
1503 if(file_exists(buf
.buf
))
1504 die(_("It looks like 'git am' is in progress. Cannot rebase."));
1506 if (is_directory(apply_dir())) {
1507 options
.type
= REBASE_AM
;
1508 options
.state_dir
= apply_dir();
1509 } else if (is_directory(merge_dir())) {
1511 strbuf_addf(&buf
, "%s/rewritten", merge_dir());
1512 if (is_directory(buf
.buf
)) {
1513 options
.type
= REBASE_PRESERVE_MERGES
;
1514 options
.flags
|= REBASE_INTERACTIVE_EXPLICIT
;
1517 strbuf_addf(&buf
, "%s/interactive", merge_dir());
1518 if(file_exists(buf
.buf
)) {
1519 options
.type
= REBASE_INTERACTIVE
;
1520 options
.flags
|= REBASE_INTERACTIVE_EXPLICIT
;
1522 options
.type
= REBASE_MERGE
;
1524 options
.state_dir
= merge_dir();
1527 if (options
.type
!= REBASE_UNSPECIFIED
)
1531 argc
= parse_options(argc
, argv
, prefix
,
1532 builtin_rebase_options
,
1533 builtin_rebase_usage
, 0);
1535 if (action
!= ACTION_NONE
&& total_argc
!= 2) {
1536 usage_with_options(builtin_rebase_usage
,
1537 builtin_rebase_options
);
1541 usage_with_options(builtin_rebase_usage
,
1542 builtin_rebase_options
);
1544 if (options
.type
== REBASE_PRESERVE_MERGES
)
1545 warning(_("git rebase --preserve-merges is deprecated. "
1546 "Use --rebase-merges instead."));
1548 if (action
!= ACTION_NONE
&& !in_progress
)
1549 die(_("No rebase in progress?"));
1550 setenv(GIT_REFLOG_ACTION_ENVIRONMENT
, "rebase", 0);
1552 if (action
== ACTION_EDIT_TODO
&& !is_interactive(&options
))
1553 die(_("The --edit-todo action can only be used during "
1554 "interactive rebase."));
1556 if (trace2_is_enabled()) {
1557 if (is_interactive(&options
))
1558 trace2_cmd_mode("interactive");
1560 trace2_cmd_mode("interactive-exec");
1562 trace2_cmd_mode(action_names
[action
]);
1566 case ACTION_CONTINUE
: {
1567 struct object_id head
;
1568 struct lock_file lock_file
= LOCK_INIT
;
1571 options
.action
= "continue";
1572 set_reflog_action(&options
);
1575 if (get_oid("HEAD", &head
))
1576 die(_("Cannot read HEAD"));
1578 fd
= hold_locked_index(&lock_file
, 0);
1579 if (repo_read_index(the_repository
) < 0)
1580 die(_("could not read index"));
1581 refresh_index(the_repository
->index
, REFRESH_QUIET
, NULL
, NULL
,
1584 repo_update_index_if_able(the_repository
, &lock_file
);
1585 rollback_lock_file(&lock_file
);
1587 if (has_unstaged_changes(the_repository
, 1)) {
1588 puts(_("You must edit all merge conflicts and then\n"
1589 "mark them as resolved using git add"));
1592 if (read_basic_state(&options
))
1597 struct string_list merge_rr
= STRING_LIST_INIT_DUP
;
1599 options
.action
= "skip";
1600 set_reflog_action(&options
);
1602 rerere_clear(the_repository
, &merge_rr
);
1603 string_list_clear(&merge_rr
, 1);
1605 if (reset_head(NULL
, "reset", NULL
, RESET_HEAD_HARD
,
1607 die(_("could not discard worktree changes"));
1608 remove_branch_state(the_repository
);
1609 if (read_basic_state(&options
))
1613 case ACTION_ABORT
: {
1614 struct string_list merge_rr
= STRING_LIST_INIT_DUP
;
1615 options
.action
= "abort";
1616 set_reflog_action(&options
);
1618 rerere_clear(the_repository
, &merge_rr
);
1619 string_list_clear(&merge_rr
, 1);
1621 if (read_basic_state(&options
))
1623 if (reset_head(&options
.orig_head
, "reset",
1624 options
.head_name
, RESET_HEAD_HARD
,
1626 die(_("could not move back to %s"),
1627 oid_to_hex(&options
.orig_head
));
1628 remove_branch_state(the_repository
);
1629 ret
= finish_rebase(&options
);
1634 strbuf_addstr(&buf
, options
.state_dir
);
1635 ret
= !!remove_dir_recursively(&buf
, 0);
1637 die(_("could not remove '%s'"), options
.state_dir
);
1640 case ACTION_EDIT_TODO
:
1641 options
.action
= "edit-todo";
1642 options
.dont_finish_rebase
= 1;
1644 case ACTION_SHOW_CURRENT_PATCH
:
1645 options
.action
= "show-current-patch";
1646 options
.dont_finish_rebase
= 1;
1651 BUG("action: %d", action
);
1654 /* Make sure no rebase is in progress */
1656 const char *last_slash
= strrchr(options
.state_dir
, '/');
1657 const char *state_dir_base
=
1658 last_slash
? last_slash
+ 1 : options
.state_dir
;
1659 const char *cmd_live_rebase
=
1660 "git rebase (--continue | --abort | --skip)";
1662 strbuf_addf(&buf
, "rm -fr \"%s\"", options
.state_dir
);
1663 die(_("It seems that there is already a %s directory, and\n"
1664 "I wonder if you are in the middle of another rebase. "
1666 "case, please try\n\t%s\n"
1667 "If that is not the case, please\n\t%s\n"
1668 "and run me again. I am stopping in case you still "
1670 "valuable there.\n"),
1671 state_dir_base
, cmd_live_rebase
, buf
.buf
);
1674 for (i
= 0; i
< options
.git_am_opts
.argc
; i
++) {
1675 const char *option
= options
.git_am_opts
.argv
[i
], *p
;
1676 if (!strcmp(option
, "--committer-date-is-author-date") ||
1677 !strcmp(option
, "--ignore-date") ||
1678 !strcmp(option
, "--whitespace=fix") ||
1679 !strcmp(option
, "--whitespace=strip"))
1680 options
.flags
|= REBASE_FORCE
;
1681 else if (skip_prefix(option
, "-C", &p
)) {
1683 if (!isdigit(*(p
++)))
1684 die(_("switch `C' expects a "
1685 "numerical value"));
1686 } else if (skip_prefix(option
, "--whitespace=", &p
)) {
1687 if (*p
&& strcmp(p
, "warn") && strcmp(p
, "nowarn") &&
1688 strcmp(p
, "error") && strcmp(p
, "error-all"))
1689 die("Invalid whitespace option: '%s'", p
);
1693 for (i
= 0; i
< exec
.nr
; i
++)
1694 if (check_exec_cmd(exec
.items
[i
].string
))
1697 if (!(options
.flags
& REBASE_NO_QUIET
))
1698 argv_array_push(&options
.git_am_opts
, "-q");
1700 if (options
.keep_empty
)
1701 imply_interactive(&options
, "--keep-empty");
1704 free(options
.gpg_sign_opt
);
1705 options
.gpg_sign_opt
= xstrfmt("-S%s", gpg_sign
);
1711 imply_interactive(&options
, "--exec");
1714 for (i
= 0; i
< exec
.nr
; i
++)
1715 strbuf_addf(&buf
, "exec %s\n", exec
.items
[i
].string
);
1716 options
.cmd
= xstrdup(buf
.buf
);
1719 if (rebase_merges
) {
1720 if (!*rebase_merges
)
1721 ; /* default mode; do nothing */
1722 else if (!strcmp("rebase-cousins", rebase_merges
))
1723 options
.rebase_cousins
= 1;
1724 else if (strcmp("no-rebase-cousins", rebase_merges
))
1725 die(_("Unknown mode: %s"), rebase_merges
);
1726 options
.rebase_merges
= 1;
1727 imply_interactive(&options
, "--rebase-merges");
1730 if (strategy_options
.nr
) {
1733 if (!options
.strategy
)
1734 options
.strategy
= "recursive";
1737 for (i
= 0; i
< strategy_options
.nr
; i
++)
1738 strbuf_addf(&buf
, " --%s",
1739 strategy_options
.items
[i
].string
);
1740 options
.strategy_opts
= xstrdup(buf
.buf
);
1743 if (options
.strategy
) {
1744 options
.strategy
= xstrdup(options
.strategy
);
1745 switch (options
.type
) {
1747 die(_("--strategy requires --merge or --interactive"));
1749 case REBASE_INTERACTIVE
:
1750 case REBASE_PRESERVE_MERGES
:
1753 case REBASE_UNSPECIFIED
:
1754 options
.type
= REBASE_MERGE
;
1757 BUG("unhandled rebase type (%d)", options
.type
);
1761 if (options
.type
== REBASE_MERGE
)
1762 imply_interactive(&options
, "--merge");
1764 if (options
.root
&& !options
.onto_name
)
1765 imply_interactive(&options
, "--root without --onto");
1767 if (isatty(2) && options
.flags
& REBASE_NO_QUIET
)
1768 strbuf_addstr(&options
.git_format_patch_opt
, " --progress");
1770 switch (options
.type
) {
1772 case REBASE_INTERACTIVE
:
1773 case REBASE_PRESERVE_MERGES
:
1774 options
.state_dir
= merge_dir();
1777 options
.state_dir
= apply_dir();
1780 /* the default rebase backend is `--am` */
1781 options
.type
= REBASE_AM
;
1782 options
.state_dir
= apply_dir();
1786 if (options
.reschedule_failed_exec
&& !is_interactive(&options
))
1787 die(_("%s requires an interactive rebase"), "--reschedule-failed-exec");
1789 if (options
.git_am_opts
.argc
) {
1790 /* all am options except -q are compatible only with --am */
1791 for (i
= options
.git_am_opts
.argc
- 1; i
>= 0; i
--)
1792 if (strcmp(options
.git_am_opts
.argv
[i
], "-q"))
1795 if (is_interactive(&options
) && i
>= 0)
1796 die(_("cannot combine am options with either "
1797 "interactive or merge options"));
1800 if (options
.signoff
) {
1801 if (options
.type
== REBASE_PRESERVE_MERGES
)
1802 die("cannot combine '--signoff' with "
1803 "'--preserve-merges'");
1804 argv_array_push(&options
.git_am_opts
, "--signoff");
1805 options
.flags
|= REBASE_FORCE
;
1808 if (options
.type
== REBASE_PRESERVE_MERGES
) {
1810 * Note: incompatibility with --signoff handled in signoff block above
1811 * Note: incompatibility with --interactive is just a strong warning;
1812 * git-rebase.txt caveats with "unless you know what you are doing"
1814 if (options
.rebase_merges
)
1815 die(_("cannot combine '--preserve-merges' with "
1816 "'--rebase-merges'"));
1818 if (options
.reschedule_failed_exec
)
1819 die(_("error: cannot combine '--preserve-merges' with "
1820 "'--reschedule-failed-exec'"));
1823 if (options
.rebase_merges
) {
1824 if (strategy_options
.nr
)
1825 die(_("cannot combine '--rebase-merges' with "
1826 "'--strategy-option'"));
1827 if (options
.strategy
)
1828 die(_("cannot combine '--rebase-merges' with "
1832 if (!options
.root
) {
1834 struct branch
*branch
;
1836 branch
= branch_get(NULL
);
1837 options
.upstream_name
= branch_get_upstream(branch
,
1839 if (!options
.upstream_name
)
1840 error_on_missing_default_upstream();
1844 options
.upstream_name
= argv
[0];
1847 if (!strcmp(options
.upstream_name
, "-"))
1848 options
.upstream_name
= "@{-1}";
1850 options
.upstream
= peel_committish(options
.upstream_name
);
1851 if (!options
.upstream
)
1852 die(_("invalid upstream '%s'"), options
.upstream_name
);
1853 options
.upstream_arg
= options
.upstream_name
;
1855 if (!options
.onto_name
) {
1856 if (commit_tree("", 0, the_hash_algo
->empty_tree
, NULL
,
1857 &squash_onto
, NULL
, NULL
) < 0)
1858 die(_("Could not create new root commit"));
1859 options
.squash_onto
= &squash_onto
;
1860 options
.onto_name
= squash_onto_name
=
1861 xstrdup(oid_to_hex(&squash_onto
));
1863 options
.upstream_name
= NULL
;
1864 options
.upstream
= NULL
;
1866 usage_with_options(builtin_rebase_usage
,
1867 builtin_rebase_options
);
1868 options
.upstream_arg
= "--root";
1871 /* Make sure the branch to rebase onto is valid. */
1872 if (!options
.onto_name
)
1873 options
.onto_name
= options
.upstream_name
;
1874 if (strstr(options
.onto_name
, "...")) {
1875 if (get_oid_mb(options
.onto_name
, &merge_base
) < 0)
1876 die(_("'%s': need exactly one merge base"),
1878 options
.onto
= lookup_commit_or_die(&merge_base
,
1881 options
.onto
= peel_committish(options
.onto_name
);
1883 die(_("Does not point to a valid commit '%s'"),
1888 * If the branch to rebase is given, that is the branch we will rebase
1889 * branch_name -- branch/commit being rebased, or
1890 * HEAD (already detached)
1891 * orig_head -- commit object name of tip of the branch before rebasing
1892 * head_name -- refs/heads/<that-branch> or NULL (detached HEAD)
1895 /* Is it "rebase other branchname" or "rebase other commit"? */
1896 branch_name
= argv
[0];
1897 options
.switch_to
= argv
[0];
1899 /* Is it a local branch? */
1901 strbuf_addf(&buf
, "refs/heads/%s", branch_name
);
1902 if (!read_ref(buf
.buf
, &options
.orig_head
))
1903 options
.head_name
= xstrdup(buf
.buf
);
1904 /* If not is it a valid ref (branch or commit)? */
1905 else if (!get_oid(branch_name
, &options
.orig_head
))
1906 options
.head_name
= NULL
;
1908 die(_("fatal: no such branch/commit '%s'"),
1910 } else if (argc
== 0) {
1911 /* Do not need to switch branches, we are already on it. */
1913 xstrdup_or_null(resolve_ref_unsafe("HEAD", 0, NULL
,
1915 if (!options
.head_name
)
1916 die(_("No such ref: %s"), "HEAD");
1917 if (flags
& REF_ISSYMREF
) {
1918 if (!skip_prefix(options
.head_name
,
1919 "refs/heads/", &branch_name
))
1920 branch_name
= options
.head_name
;
1923 FREE_AND_NULL(options
.head_name
);
1924 branch_name
= "HEAD";
1926 if (get_oid("HEAD", &options
.orig_head
))
1927 die(_("Could not resolve HEAD to a revision"));
1929 BUG("unexpected number of arguments left to parse");
1931 if (fork_point
> 0) {
1932 struct commit
*head
=
1933 lookup_commit_reference(the_repository
,
1934 &options
.orig_head
);
1935 options
.restrict_revision
=
1936 get_fork_point(options
.upstream_name
, head
);
1939 if (repo_read_index(the_repository
) < 0)
1940 die(_("could not read index"));
1942 if (options
.autostash
) {
1943 struct lock_file lock_file
= LOCK_INIT
;
1946 fd
= hold_locked_index(&lock_file
, 0);
1947 refresh_cache(REFRESH_QUIET
);
1949 repo_update_index_if_able(the_repository
, &lock_file
);
1950 rollback_lock_file(&lock_file
);
1952 if (has_unstaged_changes(the_repository
, 1) ||
1953 has_uncommitted_changes(the_repository
, 1)) {
1954 const char *autostash
=
1955 state_dir_path("autostash", &options
);
1956 struct child_process stash
= CHILD_PROCESS_INIT
;
1957 struct object_id oid
;
1958 struct commit
*head
=
1959 lookup_commit_reference(the_repository
,
1960 &options
.orig_head
);
1962 argv_array_pushl(&stash
.args
,
1963 "stash", "create", "autostash", NULL
);
1967 if (capture_command(&stash
, &buf
, GIT_MAX_HEXSZ
))
1968 die(_("Cannot autostash"));
1969 strbuf_trim_trailing_newline(&buf
);
1970 if (get_oid(buf
.buf
, &oid
))
1971 die(_("Unexpected stash response: '%s'"),
1974 strbuf_add_unique_abbrev(&buf
, &oid
, DEFAULT_ABBREV
);
1976 if (safe_create_leading_directories_const(autostash
))
1977 die(_("Could not create directory for '%s'"),
1979 write_file(autostash
, "%s", oid_to_hex(&oid
));
1980 printf(_("Created autostash: %s\n"), buf
.buf
);
1981 if (reset_head(&head
->object
.oid
, "reset --hard",
1982 NULL
, RESET_HEAD_HARD
, NULL
, NULL
) < 0)
1983 die(_("could not reset --hard"));
1984 printf(_("HEAD is now at %s"),
1985 find_unique_abbrev(&head
->object
.oid
,
1988 pp_commit_easy(CMIT_FMT_ONELINE
, head
, &buf
);
1990 printf(" %s", buf
.buf
);
1993 if (discard_index(the_repository
->index
) < 0 ||
1994 repo_read_index(the_repository
) < 0)
1995 die(_("could not read index"));
1999 if (require_clean_work_tree(the_repository
, "rebase",
2000 _("Please commit or stash them."), 1, 1)) {
2006 * Now we are rebasing commits upstream..orig_head (or with --root,
2007 * everything leading up to orig_head) on top of onto.
2011 * Check if we are already based on onto with linear history,
2012 * but this should be done only when upstream and onto are the same
2013 * and if this is not an interactive rebase.
2015 if (can_fast_forward(options
.onto
, &options
.orig_head
, &merge_base
) &&
2016 !is_interactive(&options
) && !options
.restrict_revision
&&
2018 !oidcmp(&options
.upstream
->object
.oid
, &options
.onto
->object
.oid
)) {
2021 if (!(options
.flags
& REBASE_FORCE
)) {
2022 /* Lazily switch to the target branch if needed... */
2023 if (options
.switch_to
) {
2024 struct object_id oid
;
2026 if (get_oid(options
.switch_to
, &oid
) < 0) {
2027 ret
= !!error(_("could not parse '%s'"),
2033 strbuf_addf(&buf
, "%s: checkout %s",
2034 getenv(GIT_REFLOG_ACTION_ENVIRONMENT
),
2036 if (reset_head(&oid
, "checkout",
2038 RESET_HEAD_RUN_POST_CHECKOUT_HOOK
,
2039 NULL
, buf
.buf
) < 0) {
2040 ret
= !!error(_("could not switch to "
2047 if (!(options
.flags
& REBASE_NO_QUIET
))
2049 else if (!strcmp(branch_name
, "HEAD") &&
2050 resolve_ref_unsafe("HEAD", 0, NULL
, &flag
))
2051 puts(_("HEAD is up to date."));
2053 printf(_("Current branch %s is up to date.\n"),
2055 ret
= !!finish_rebase(&options
);
2057 } else if (!(options
.flags
& REBASE_NO_QUIET
))
2059 else if (!strcmp(branch_name
, "HEAD") &&
2060 resolve_ref_unsafe("HEAD", 0, NULL
, &flag
))
2061 puts(_("HEAD is up to date, rebase forced."));
2063 printf(_("Current branch %s is up to date, rebase "
2064 "forced.\n"), branch_name
);
2067 /* If a hook exists, give it a chance to interrupt*/
2068 if (!ok_to_skip_pre_rebase
&&
2069 run_hook_le(NULL
, "pre-rebase", options
.upstream_arg
,
2070 argc
? argv
[0] : NULL
, NULL
))
2071 die(_("The pre-rebase hook refused to rebase."));
2073 if (options
.flags
& REBASE_DIFFSTAT
) {
2074 struct diff_options opts
;
2076 if (options
.flags
& REBASE_VERBOSE
) {
2077 if (is_null_oid(&merge_base
))
2078 printf(_("Changes to %s:\n"),
2079 oid_to_hex(&options
.onto
->object
.oid
));
2081 printf(_("Changes from %s to %s:\n"),
2082 oid_to_hex(&merge_base
),
2083 oid_to_hex(&options
.onto
->object
.oid
));
2086 /* We want color (if set), but no pager */
2088 opts
.stat_width
= -1; /* use full terminal width */
2089 opts
.stat_graph_width
= -1; /* respect statGraphWidth config */
2090 opts
.output_format
|=
2091 DIFF_FORMAT_SUMMARY
| DIFF_FORMAT_DIFFSTAT
;
2092 opts
.detect_rename
= DIFF_DETECT_RENAME
;
2093 diff_setup_done(&opts
);
2094 diff_tree_oid(is_null_oid(&merge_base
) ?
2095 the_hash_algo
->empty_tree
: &merge_base
,
2096 &options
.onto
->object
.oid
, "", &opts
);
2097 diffcore_std(&opts
);
2101 if (is_interactive(&options
))
2104 /* Detach HEAD and reset the tree */
2105 if (options
.flags
& REBASE_NO_QUIET
)
2106 printf(_("First, rewinding head to replay your work on top of "
2109 strbuf_addf(&msg
, "%s: checkout %s",
2110 getenv(GIT_REFLOG_ACTION_ENVIRONMENT
), options
.onto_name
);
2111 if (reset_head(&options
.onto
->object
.oid
, "checkout", NULL
,
2112 RESET_HEAD_DETACH
| RESET_ORIG_HEAD
|
2113 RESET_HEAD_RUN_POST_CHECKOUT_HOOK
,
2115 die(_("Could not detach HEAD"));
2116 strbuf_release(&msg
);
2119 * If the onto is a proper descendant of the tip of the branch, then
2120 * we just fast-forwarded.
2123 if (oideq(&merge_base
, &options
.orig_head
)) {
2124 printf(_("Fast-forwarded %s to %s.\n"),
2125 branch_name
, options
.onto_name
);
2126 strbuf_addf(&msg
, "rebase finished: %s onto %s",
2127 options
.head_name
? options
.head_name
: "detached HEAD",
2128 oid_to_hex(&options
.onto
->object
.oid
));
2129 reset_head(NULL
, "Fast-forwarded", options
.head_name
,
2130 RESET_HEAD_REFS_ONLY
, "HEAD", msg
.buf
);
2131 strbuf_release(&msg
);
2132 ret
= !!finish_rebase(&options
);
2136 strbuf_addf(&revisions
, "%s..%s",
2137 options
.root
? oid_to_hex(&options
.onto
->object
.oid
) :
2138 (options
.restrict_revision
?
2139 oid_to_hex(&options
.restrict_revision
->object
.oid
) :
2140 oid_to_hex(&options
.upstream
->object
.oid
)),
2141 oid_to_hex(&options
.orig_head
));
2143 options
.revisions
= revisions
.buf
;
2146 ret
= !!run_specific_rebase(&options
, action
);
2149 strbuf_release(&revisions
);
2150 free(options
.head_name
);
2151 free(options
.gpg_sign_opt
);
2153 free(squash_onto_name
);