diff options
| -rw-r--r-- | builtin/rebase.c | 150 |
1 files changed, 135 insertions, 15 deletions
diff --git a/builtin/rebase.c b/builtin/rebase.c index 4d30ca7b87..6fe17d198f 100644 --- a/builtin/rebase.c +++ b/builtin/rebase.c @@ -99,6 +99,7 @@ struct rebase_options { int allow_empty_message; int rebase_merges, rebase_cousins; char *strategy, *strategy_opts; + struct strbuf git_format_patch_opt; }; static int is_interactive(struct rebase_options *opts) @@ -380,6 +381,15 @@ static int run_specific_rebase(struct rebase_options *opts) add_var(&script_snippet, "rebase_root", opts->root ? "t" : ""); add_var(&script_snippet, "squash_onto", opts->squash_onto ? oid_to_hex(opts->squash_onto) : ""); + add_var(&script_snippet, "git_format_patch_opt", + opts->git_format_patch_opt.buf); + + if (is_interactive(opts) && + !(opts->flags & REBASE_INTERACTIVE_EXPLICIT)) { + strbuf_addstr(&script_snippet, + "GIT_EDITOR=:; export GIT_EDITOR; "); + opts->autosquash = 0; + } switch (opts->type) { case REBASE_AM: @@ -432,7 +442,8 @@ static int run_specific_rebase(struct rebase_options *opts) #define GIT_REFLOG_ACTION_ENVIRONMENT "GIT_REFLOG_ACTION" static int reset_head(struct object_id *oid, const char *action, - const char *switch_to_branch, int detach_head) + const char *switch_to_branch, int detach_head, + const char *reflog_orig_head, const char *reflog_head) { struct object_id head_oid; struct tree_desc desc; @@ -507,20 +518,26 @@ static int reset_head(struct object_id *oid, const char *action, old_orig = &oid_old_orig; if (!get_oid("HEAD", &oid_orig)) { orig = &oid_orig; - strbuf_addstr(&msg, "updating ORIG_HEAD"); - update_ref(msg.buf, "ORIG_HEAD", orig, old_orig, 0, + if (!reflog_orig_head) { + strbuf_addstr(&msg, "updating ORIG_HEAD"); + reflog_orig_head = msg.buf; + } + update_ref(reflog_orig_head, "ORIG_HEAD", orig, old_orig, 0, UPDATE_REFS_MSG_ON_ERR); } else if (old_orig) delete_ref(NULL, "ORIG_HEAD", old_orig, 0); - strbuf_setlen(&msg, prefix_len); - strbuf_addstr(&msg, "updating HEAD"); + if (!reflog_head) { + strbuf_setlen(&msg, prefix_len); + strbuf_addstr(&msg, "updating HEAD"); + reflog_head = msg.buf; + } if (!switch_to_branch) - ret = update_ref(msg.buf, "HEAD", oid, orig, REF_NO_DEREF, + ret = update_ref(reflog_head, "HEAD", oid, orig, REF_NO_DEREF, UPDATE_REFS_MSG_ON_ERR); else { ret = create_symref("HEAD", switch_to_branch, msg.buf); if (!ret) - ret = update_ref(msg.buf, "HEAD", oid, NULL, 0, + ret = update_ref(reflog_head, "HEAD", oid, NULL, 0, UPDATE_REFS_MSG_ON_ERR); } @@ -623,6 +640,36 @@ static int parse_opt_interactive(const struct option *opt, const char *arg, return 0; } +static void NORETURN error_on_missing_default_upstream(void) +{ + struct branch *current_branch = branch_get(NULL); + + printf(_("%s\n" + "Please specify which branch you want to rebase against.\n" + "See git-rebase(1) for details.\n" + "\n" + " git rebase '<branch>'\n" + "\n"), + current_branch ? _("There is no tracking information for " + "the current branch.") : + _("You are not currently on a branch.")); + + if (current_branch) { + const char *remote = current_branch->remote_name; + + if (!remote) + remote = _("<remote>"); + + printf(_("If you wish to set tracking information for this " + "branch you can do so with:\n" + "\n" + " git branch --set-upstream-to=%s/<branch> %s\n" + "\n"), + remote, current_branch->name); + } + exit(1); +} + int cmd_rebase(int argc, const char **argv, const char *prefix) { struct rebase_options options = { @@ -631,6 +678,7 @@ int cmd_rebase(int argc, const char **argv, const char *prefix) .git_am_opt = STRBUF_INIT, .allow_rerere_autoupdate = -1, .allow_empty_message = 1, + .git_format_patch_opt = STRBUF_INIT, }; const char *branch_name; int ret, flags, total_argc, in_progress = 0; @@ -871,7 +919,7 @@ int cmd_rebase(int argc, const char **argv, const char *prefix) rerere_clear(&merge_rr); string_list_clear(&merge_rr, 1); - if (reset_head(NULL, "reset", NULL, 0) < 0) + if (reset_head(NULL, "reset", NULL, 0, NULL, NULL) < 0) die(_("could not discard worktree changes")); if (read_basic_state(&options)) exit(1); @@ -887,7 +935,7 @@ int cmd_rebase(int argc, const char **argv, const char *prefix) if (read_basic_state(&options)) exit(1); if (reset_head(&options.orig_head, "reset", - options.head_name, 0) < 0) + options.head_name, 0, NULL, NULL) < 0) die(_("could not move back to %s"), oid_to_hex(&options.orig_head)); ret = finish_rebase(&options); @@ -1033,6 +1081,9 @@ int cmd_rebase(int argc, const char **argv, const char *prefix) if (options.root && !options.onto_name) imply_interactive(&options, "--root without --onto"); + if (isatty(2) && options.flags & REBASE_NO_QUIET) + strbuf_addstr(&options.git_format_patch_opt, " --progress"); + switch (options.type) { case REBASE_MERGE: case REBASE_INTERACTIVE: @@ -1049,6 +1100,28 @@ int cmd_rebase(int argc, const char **argv, const char *prefix) break; } + if (options.git_am_opt.len) { + const char *p; + + /* all am options except -q are compatible only with --am */ + strbuf_reset(&buf); + strbuf_addbuf(&buf, &options.git_am_opt); + strbuf_addch(&buf, ' '); + while ((p = strstr(buf.buf, " -q "))) + strbuf_splice(&buf, p - buf.buf, 4, " ", 1); + strbuf_trim(&buf); + + if (is_interactive(&options) && buf.len) + die(_("error: cannot combine interactive options " + "(--interactive, --exec, --rebase-merges, " + "--preserve-merges, --keep-empty, --root + " + "--onto) with am options (%s)"), buf.buf); + if (options.type == REBASE_MERGE && buf.len) + die(_("error: cannot combine merge options (--merge, " + "--strategy, --strategy-option) with am options " + "(%s)"), buf.buf); + } + if (options.signoff) { if (options.type == REBASE_PRESERVE_MERGES) die("cannot combine '--signoff' with " @@ -1057,10 +1130,37 @@ int cmd_rebase(int argc, const char **argv, const char *prefix) options.flags |= REBASE_FORCE; } + if (options.type == REBASE_PRESERVE_MERGES) + /* + * Note: incompatibility with --signoff handled in signoff block above + * Note: incompatibility with --interactive is just a strong warning; + * git-rebase.txt caveats with "unless you know what you are doing" + */ + if (options.rebase_merges) + die(_("error: cannot combine '--preserve_merges' with " + "'--rebase-merges'")); + + if (options.rebase_merges) { + if (strategy_options.nr) + die(_("error: cannot combine '--rebase_merges' with " + "'--strategy-option'")); + if (options.strategy) + die(_("error: cannot combine '--rebase_merges' with " + "'--strategy'")); + } + if (!options.root) { - if (argc < 1) - die("TODO: handle @{upstream}"); - else { + if (argc < 1) { + struct branch *branch; + + branch = branch_get(NULL); + options.upstream_name = branch_get_upstream(branch, + NULL); + if (!options.upstream_name) + error_on_missing_default_upstream(); + if (fork_point < 0) + fork_point = 1; + } else { options.upstream_name = argv[0]; argc--; argv++; @@ -1199,7 +1299,7 @@ int cmd_rebase(int argc, const char **argv, const char *prefix) write_file(autostash, "%s", buf.buf); printf(_("Created autostash: %s\n"), buf.buf); if (reset_head(&head->object.oid, "reset --hard", - NULL, 0) < 0) + NULL, 0, NULL, NULL) < 0) die(_("could not reset --hard")); printf(_("HEAD is now at %s"), find_unique_abbrev(&head->object.oid, @@ -1253,7 +1353,8 @@ int cmd_rebase(int argc, const char **argv, const char *prefix) strbuf_addf(&buf, "rebase: checkout %s", options.switch_to); if (reset_head(&oid, "checkout", - options.head_name, 0) < 0) { + options.head_name, 0, + NULL, NULL) < 0) { ret = !!error(_("could not switch to " "%s"), options.switch_to); @@ -1318,10 +1419,29 @@ int cmd_rebase(int argc, const char **argv, const char *prefix) "it...\n")); strbuf_addf(&msg, "rebase: checkout %s", options.onto_name); - if (reset_head(&options.onto->object.oid, "checkout", NULL, 1)) + if (reset_head(&options.onto->object.oid, "checkout", NULL, 1, + NULL, msg.buf)) die(_("Could not detach HEAD")); strbuf_release(&msg); + /* + * If the onto is a proper descendant of the tip of the branch, then + * we just fast-forwarded. + */ + strbuf_reset(&msg); + if (!oidcmp(&merge_base, &options.orig_head)) { + printf(_("Fast-forwarded %s to %s. \n"), + branch_name, options.onto_name); + strbuf_addf(&msg, "rebase finished: %s onto %s", + options.head_name ? options.head_name : "detached HEAD", + oid_to_hex(&options.onto->object.oid)); + reset_head(NULL, "Fast-forwarded", options.head_name, 0, + "HEAD", msg.buf); + strbuf_release(&msg); + ret = !!finish_rebase(&options); + goto cleanup; + } + strbuf_addf(&revisions, "%s..%s", options.root ? oid_to_hex(&options.onto->object.oid) : (options.restrict_revision ? |