diff options
| -rw-r--r-- | Documentation/git-rebase.txt | 24 | ||||
| -rw-r--r-- | builtin/rebase.c | 28 | ||||
| -rw-r--r-- | rebase-interactive.c | 7 | ||||
| -rw-r--r-- | rebase-interactive.h | 2 | ||||
| -rw-r--r-- | sequencer.c | 20 | ||||
| -rw-r--r-- | sequencer.h | 2 | ||||
| -rwxr-xr-x | t/t3421-rebase-topology-linear.sh | 16 | ||||
| -rwxr-xr-x | t/t3424-rebase-empty.sh | 70 | ||||
| -rwxr-xr-x | t/t3427-rebase-subtree.sh | 12 |
9 files changed, 126 insertions, 55 deletions
diff --git a/Documentation/git-rebase.txt b/Documentation/git-rebase.txt index c83be7ffc2..1d19542d79 100644 --- a/Documentation/git-rebase.txt +++ b/Documentation/git-rebase.txt @@ -259,10 +259,13 @@ See also INCOMPATIBLE OPTIONS below. unchanged as a result. --keep-empty:: - Keep the commits that do not change anything from its - parents in the result. + No-op. Rebasing commits that started empty (had no change + relative to their parent) used to fail and this option would + override that behavior, allowing commits with empty changes to + be rebased. Now commits with no changes do not cause rebasing + to halt. + -See also INCOMPATIBLE OPTIONS below. +See also BEHAVIORAL DIFFERENCES and INCOMPATIBLE OPTIONS below. --allow-empty-message:: No-op. Rebasing commits with an empty message used to fail @@ -577,15 +580,14 @@ There are some subtle differences how the backends behave. Empty commits ~~~~~~~~~~~~~ -The am backend drops any "empty" commits, regardless of whether the -commit started empty (had no changes relative to its parent to -start with) or ended empty (all changes were already applied -upstream in other commits). +The am backend unfortunately drops intentionally empty commits, i.e. +commits that started empty, though these are rare in practice. It +also drops commits that become empty and has no option for controlling +this behavior. -The interactive backend drops commits by default that -started empty and halts if it hits a commit that ended up empty. -The `--keep-empty` option exists for the interactive backend to allow -it to keep commits that started empty. +The interactive backend keeps intentionally empty commits. +Unfortunately, it always halts whenever it runs across a commit that +becomes empty, even when the rebase is not explicitly interactive. Directory rename detection ~~~~~~~~~~~~~~~~~~~~~~~~~~ diff --git a/builtin/rebase.c b/builtin/rebase.c index faa4e0d406..537b3241ce 100644 --- a/builtin/rebase.c +++ b/builtin/rebase.c @@ -77,7 +77,6 @@ struct rebase_options { const char *action; int signoff; int allow_rerere_autoupdate; - int keep_empty; int autosquash; char *gpg_sign_opt; int autostash; @@ -375,7 +374,6 @@ static int run_rebase_interactive(struct rebase_options *opts, git_config_get_bool("rebase.abbreviatecommands", &abbreviate_commands); - flags |= opts->keep_empty ? TODO_LIST_KEEP_EMPTY : 0; flags |= abbreviate_commands ? TODO_LIST_ABBREVIATE_CMDS : 0; flags |= opts->rebase_merges ? TODO_LIST_REBASE_MERGES : 0; flags |= opts->rebase_cousins > 0 ? TODO_LIST_REBASE_COUSINS : 0; @@ -439,6 +437,17 @@ static int run_rebase_interactive(struct rebase_options *opts, return ret; } +static int parse_opt_keep_empty(const struct option *opt, const char *arg, + int unset) +{ + struct rebase_options *opts = opt->value; + + BUG_ON_OPT_ARG(arg); + + opts->type = REBASE_INTERACTIVE; + return 0; +} + static const char * const builtin_rebase_interactive_usage[] = { N_("git rebase--interactive [<options>]"), NULL @@ -452,7 +461,10 @@ int cmd_rebase__interactive(int argc, const char **argv, const char *prefix) struct option options[] = { OPT_NEGBIT(0, "ff", &opts.flags, N_("allow fast-forward"), REBASE_FORCE), - OPT_BOOL(0, "keep-empty", &opts.keep_empty, N_("keep empty commits")), + { OPTION_CALLBACK, 'k', "keep-empty", &options, NULL, + N_("(DEPRECATED) keep empty commits"), + PARSE_OPT_NOARG | PARSE_OPT_HIDDEN, + parse_opt_keep_empty }, OPT_BOOL_F(0, "allow-empty-message", &opts.allow_empty_message, N_("allow commits with empty messages"), PARSE_OPT_HIDDEN), @@ -1145,7 +1157,6 @@ static int run_specific_rebase(struct rebase_options *opts, enum action action) opts->allow_rerere_autoupdate ? opts->allow_rerere_autoupdate == RERERE_AUTOUPDATE ? "--rerere-autoupdate" : "--no-rerere-autoupdate" : ""); - add_var(&script_snippet, "keep_empty", opts->keep_empty ? "yes" : ""); add_var(&script_snippet, "autosquash", opts->autosquash ? "t" : ""); add_var(&script_snippet, "gpg_sign_opt", opts->gpg_sign_opt); add_var(&script_snippet, "cmd", opts->cmd); @@ -1483,8 +1494,10 @@ int cmd_rebase(int argc, const char **argv, const char *prefix) "ignoring them"), REBASE_PRESERVE_MERGES, PARSE_OPT_HIDDEN), OPT_RERERE_AUTOUPDATE(&options.allow_rerere_autoupdate), - OPT_BOOL('k', "keep-empty", &options.keep_empty, - N_("preserve empty commits during rebase")), + { OPTION_CALLBACK, 'k', "keep-empty", &options, NULL, + N_("(DEPRECATED) keep empty commits"), + PARSE_OPT_NOARG | PARSE_OPT_HIDDEN, + parse_opt_keep_empty }, OPT_BOOL(0, "autosquash", &options.autosquash, N_("move commits that begin with " "squash!/fixup! under -i")), @@ -1747,9 +1760,6 @@ int cmd_rebase(int argc, const char **argv, const char *prefix) if (!(options.flags & REBASE_NO_QUIET)) argv_array_push(&options.git_am_opts, "-q"); - if (options.keep_empty) - imply_interactive(&options, "--keep-empty"); - if (gpg_sign) { free(options.gpg_sign_opt); options.gpg_sign_opt = xstrfmt("-S%s", gpg_sign); diff --git a/rebase-interactive.c b/rebase-interactive.c index aa18ae82b7..7e7b4061bf 100644 --- a/rebase-interactive.c +++ b/rebase-interactive.c @@ -28,7 +28,7 @@ static enum missing_commit_check_level get_missing_commit_check_level(void) return MISSING_COMMIT_CHECK_IGNORE; } -void append_todo_help(unsigned keep_empty, int command_count, +void append_todo_help(int command_count, const char *shortrevisions, const char *shortonto, struct strbuf *buf) { @@ -80,11 +80,6 @@ void append_todo_help(unsigned keep_empty, int command_count, "the rebase will be aborted.\n\n"); strbuf_add_commented_lines(buf, msg, strlen(msg)); - - if (!keep_empty) { - msg = _("Note that empty commits are commented out"); - strbuf_add_commented_lines(buf, msg, strlen(msg)); - } } int edit_todo_list(struct repository *r, struct todo_list *todo_list, diff --git a/rebase-interactive.h b/rebase-interactive.h index 44dbb06311..05354ca341 100644 --- a/rebase-interactive.h +++ b/rebase-interactive.h @@ -5,7 +5,7 @@ struct strbuf; struct repository; struct todo_list; -void append_todo_help(unsigned keep_empty, int command_count, +void append_todo_help(int command_count, const char *shortrevisions, const char *shortonto, struct strbuf *buf); int edit_todo_list(struct repository *r, struct todo_list *todo_list, diff --git a/sequencer.c b/sequencer.c index b9dbf1adb0..c21fc202b1 100644 --- a/sequencer.c +++ b/sequencer.c @@ -1489,7 +1489,7 @@ static int allow_empty(struct repository *r, struct replay_opts *opts, struct commit *commit) { - int index_unchanged, empty_commit; + int index_unchanged, originally_empty; /* * Three cases: @@ -1513,10 +1513,10 @@ static int allow_empty(struct repository *r, if (opts->keep_redundant_commits) return 1; - empty_commit = is_original_commit_empty(commit); - if (empty_commit < 0) - return empty_commit; - if (!empty_commit) + originally_empty = is_original_commit_empty(commit); + if (originally_empty < 0) + return originally_empty; + if (!originally_empty) return 0; else return 1; @@ -4566,7 +4566,6 @@ static int make_script_with_merges(struct pretty_print_context *pp, struct rev_info *revs, struct strbuf *out, unsigned flags) { - int keep_empty = flags & TODO_LIST_KEEP_EMPTY; int rebase_cousins = flags & TODO_LIST_REBASE_COUSINS; int root_with_onto = flags & TODO_LIST_ROOT_WITH_ONTO; struct strbuf buf = STRBUF_INIT, oneline = STRBUF_INIT; @@ -4629,8 +4628,6 @@ static int make_script_with_merges(struct pretty_print_context *pp, if (!to_merge) { /* non-merge commit: easy case */ strbuf_reset(&buf); - if (!keep_empty && is_empty) - strbuf_addf(&buf, "%c ", comment_line_char); strbuf_addf(&buf, "%s %s %s", cmd_pick, oid_to_hex(&commit->object.oid), oneline.buf); @@ -4797,7 +4794,6 @@ int sequencer_make_script(struct repository *r, struct strbuf *out, int argc, struct pretty_print_context pp = {0}; struct rev_info revs; struct commit *commit; - int keep_empty = flags & TODO_LIST_KEEP_EMPTY; const char *insn = flags & TODO_LIST_ABBREVIATE_CMDS ? "p" : "pick"; int rebase_merges = flags & TODO_LIST_REBASE_MERGES; @@ -4833,12 +4829,10 @@ int sequencer_make_script(struct repository *r, struct strbuf *out, int argc, return make_script_with_merges(&pp, &revs, out, flags); while ((commit = get_revision(&revs))) { - int is_empty = is_original_commit_empty(commit); + int is_empty = is_original_commit_empty(commit); if (!is_empty && (commit->object.flags & PATCHSAME)) continue; - if (!keep_empty && is_empty) - strbuf_addf(out, "%c ", comment_line_char); strbuf_addf(out, "%s %s ", insn, oid_to_hex(&commit->object.oid)); pretty_print_commit(&pp, commit, out); @@ -4975,7 +4969,7 @@ int todo_list_write_to_file(struct repository *r, struct todo_list *todo_list, todo_list_to_strbuf(r, todo_list, &buf, num, flags); if (flags & TODO_LIST_APPEND_TODO_HELP) - append_todo_help(flags & TODO_LIST_KEEP_EMPTY, count_commands(todo_list), + append_todo_help(count_commands(todo_list), shortrevisions, shortonto, &buf); res = write_message(buf.buf, buf.len, file, 0); diff --git a/sequencer.h b/sequencer.h index 9f9ae291e3..c165e0ff25 100644 --- a/sequencer.h +++ b/sequencer.h @@ -132,7 +132,7 @@ int sequencer_rollback(struct repository *repo, struct replay_opts *opts); int sequencer_skip(struct repository *repo, struct replay_opts *opts); int sequencer_remove_state(struct replay_opts *opts); -#define TODO_LIST_KEEP_EMPTY (1U << 0) +/* #define TODO_LIST_KEEP_EMPTY (1U << 0) */ /* No longer used */ #define TODO_LIST_SHORTEN_IDS (1U << 1) #define TODO_LIST_ABBREVIATE_CMDS (1U << 2) #define TODO_LIST_REBASE_MERGES (1U << 3) diff --git a/t/t3421-rebase-topology-linear.sh b/t/t3421-rebase-topology-linear.sh index 325072b0a3..57334dca7e 100755 --- a/t/t3421-rebase-topology-linear.sh +++ b/t/t3421-rebase-topology-linear.sh @@ -205,17 +205,17 @@ test_expect_success 'setup of linear history for empty commit tests' ' test_run_rebase () { result=$1 shift - test_expect_$result "rebase $* drops empty commit" " + test_expect_$result "rebase $* keeps begin-empty commits" " reset_rebase && - git rebase $* c l && - test_cmp_rev c HEAD~2 && - test_linear_range 'd l' c.. + git rebase $* j l && + test_cmp_rev c HEAD~4 && + test_linear_range 'j d k l' c.. " } -test_run_rebase success '' +test_run_rebase failure '' test_run_rebase success -m test_run_rebase success -i -test_have_prereq !REBASE_P || test_run_rebase success -p +test_have_prereq !REBASE_P || test_run_rebase failure -p test_run_rebase () { result=$1 @@ -230,7 +230,7 @@ test_run_rebase () { test_run_rebase success '' test_run_rebase success -m test_run_rebase success -i -test_have_prereq !REBASE_P || test_run_rebase failure -p +test_have_prereq !REBASE_P || test_run_rebase success -p test_run_rebase () { result=$1 @@ -245,7 +245,7 @@ test_run_rebase () { test_run_rebase success '' test_run_rebase success -m test_run_rebase success -i -test_have_prereq !REBASE_P || test_run_rebase failure -p +test_have_prereq !REBASE_P || test_run_rebase success -p test_run_rebase success --rebase-merges # m diff --git a/t/t3424-rebase-empty.sh b/t/t3424-rebase-empty.sh new file mode 100755 index 0000000000..3b716e980e --- /dev/null +++ b/t/t3424-rebase-empty.sh @@ -0,0 +1,70 @@ +#!/bin/sh + +test_description='git rebase of commits that start or become empty' + +. ./test-lib.sh + +test_expect_success 'setup test repository' ' + test_write_lines 1 2 3 4 5 6 7 8 9 10 >numbers && + test_write_lines A B C D E F G H I J >letters && + git add numbers letters && + git commit -m A && + + git branch upstream && + git branch localmods && + + git checkout upstream && + test_write_lines A B C D E >letters && + git add letters && + git commit -m B && + + test_write_lines 1 2 3 4 five 6 7 8 9 ten >numbers && + git add numbers && + git commit -m C && + + git checkout localmods && + test_write_lines 1 2 3 4 five 6 7 8 9 10 >numbers && + git add numbers && + git commit -m C2 && + + git commit --allow-empty -m D && + + test_write_lines A B C D E >letters && + git add letters && + git commit -m "Five letters ought to be enough for anybody" +' + +test_expect_failure 'rebase (am-backend) with a variety of empty commits' ' + test_when_finished "git rebase --abort" && + git checkout -B testing localmods && + # rebase (--am) should not drop commits that start empty + git rebase upstream && + + test_write_lines D C B A >expect && + git log --format=%s >actual && + test_cmp expect actual +' + +test_expect_failure 'rebase --merge with a variety of empty commits' ' + test_when_finished "git rebase --abort" && + git checkout -B testing localmods && + # rebase --merge should not halt on the commit that becomes empty + git rebase --merge upstream && + + test_write_lines D C B A >expect && + git log --format=%s >actual && + test_cmp expect actual +' + +test_expect_success 'rebase --interactive with a variety of empty commits' ' + git checkout -B testing localmods && + test_must_fail git rebase --interactive upstream && + + git rebase --skip && + + test_write_lines D C B A >expect && + git log --format=%s >actual && + test_cmp expect actual +' + +test_done diff --git a/t/t3427-rebase-subtree.sh b/t/t3427-rebase-subtree.sh index bec48e6a1f..8dceef61cf 100755 --- a/t/t3427-rebase-subtree.sh +++ b/t/t3427-rebase-subtree.sh @@ -85,23 +85,23 @@ test_expect_failure REBASE_P 'Rebase -Xsubtree --keep-empty --preserve-merges -- verbose test "$(commit_message HEAD)" = "Empty commit" ' -test_expect_success 'Rebase -Xsubtree --keep-empty --onto commit' ' +test_expect_success 'Rebase -Xsubtree --onto commit' ' reset_rebase && git checkout -b rebase-onto to-rebase && - test_must_fail git rebase -Xsubtree=files_subtree --keep-empty --onto files-master master && + test_must_fail git rebase -Xsubtree=files_subtree --onto files-master master && : first pick results in no changes && - git rebase --continue && + git rebase --skip && verbose test "$(commit_message HEAD~2)" = "master4" && verbose test "$(commit_message HEAD~)" = "files_subtree/master5" && verbose test "$(commit_message HEAD)" = "Empty commit" ' -test_expect_success 'Rebase -Xsubtree --keep-empty --rebase-merges --onto commit' ' +test_expect_success 'Rebase -Xsubtree --rebase-merges --onto commit' ' reset_rebase && git checkout -b rebase-merges-onto to-rebase && - test_must_fail git rebase -Xsubtree=files_subtree --keep-empty --rebase-merges --onto files-master --root && + test_must_fail git rebase -Xsubtree=files_subtree --rebase-merges --onto files-master --root && : first pick results in no changes && - git rebase --continue && + git rebase --skip && verbose test "$(commit_message HEAD~2)" = "master4" && verbose test "$(commit_message HEAD~)" = "files_subtree/master5" && verbose test "$(commit_message HEAD)" = "Empty commit" |