]> git.ipfire.org Git - thirdparty/git.git/blobdiff - sequencer.c
Merge branch 'pw/rebase-m-signoff-fix'
[thirdparty/git.git] / sequencer.c
index e29a01944be826aacfb28406100980f9aa122397..88de4dc20fbb8cb0e813afc79486cca04484aba5 100644 (file)
@@ -372,7 +372,7 @@ static int has_conforming_footer(struct strbuf *sb, struct strbuf *sob,
                sb->buf[sb->len - ignore_footer] = '\0';
        }
 
-       trailer_info_get(&info, sb->buf, &opts);
+       trailer_info_get(&opts, sb->buf, &info);
 
        if (ignore_footer)
                sb->buf[sb->len - ignore_footer] = saved_char;
@@ -510,13 +510,25 @@ static void free_message(struct commit *commit, struct commit_message *msg)
        repo_unuse_commit_buffer(the_repository, commit, msg->message);
 }
 
+const char *rebase_resolvemsg =
+N_("Resolve all conflicts manually, mark them as resolved with\n"
+"\"git add/rm <conflicted_files>\", then run \"git rebase --continue\".\n"
+"You can instead skip this commit: run \"git rebase --skip\".\n"
+"To abort and get back to the state before \"git rebase\", run "
+"\"git rebase --abort\".");
+
 static void print_advice(struct repository *r, int show_hint,
                         struct replay_opts *opts)
 {
-       char *msg = getenv("GIT_CHERRY_PICK_HELP");
+       const char *msg;
+
+       if (is_rebase_i(opts))
+               msg = rebase_resolvemsg;
+       else
+               msg = getenv("GIT_CHERRY_PICK_HELP");
 
        if (msg) {
-               advise("%s\n", msg);
+               advise_if_enabled(ADVICE_MERGE_CONFLICT, "%s", msg);
                /*
                 * A conflict has occurred but the porcelain
                 * (typically rebase --interactive) wants to take care
@@ -529,22 +541,25 @@ static void print_advice(struct repository *r, int show_hint,
 
        if (show_hint) {
                if (opts->no_commit)
-                       advise(_("after resolving the conflicts, mark the corrected paths\n"
-                                "with 'git add <paths>' or 'git rm <paths>'"));
+                       advise_if_enabled(ADVICE_MERGE_CONFLICT,
+                                         _("after resolving the conflicts, mark the corrected paths\n"
+                                           "with 'git add <paths>' or 'git rm <paths>'"));
                else if (opts->action == REPLAY_PICK)
-                       advise(_("After resolving the conflicts, mark them with\n"
-                                "\"git add/rm <pathspec>\", then run\n"
-                                "\"git cherry-pick --continue\".\n"
-                                "You can instead skip this commit with \"git cherry-pick --skip\".\n"
-                                "To abort and get back to the state before \"git cherry-pick\",\n"
-                                "run \"git cherry-pick --abort\"."));
+                       advise_if_enabled(ADVICE_MERGE_CONFLICT,
+                                         _("After resolving the conflicts, mark them with\n"
+                                           "\"git add/rm <pathspec>\", then run\n"
+                                           "\"git cherry-pick --continue\".\n"
+                                           "You can instead skip this commit with \"git cherry-pick --skip\".\n"
+                                           "To abort and get back to the state before \"git cherry-pick\",\n"
+                                           "run \"git cherry-pick --abort\"."));
                else if (opts->action == REPLAY_REVERT)
-                       advise(_("After resolving the conflicts, mark them with\n"
-                                "\"git add/rm <pathspec>\", then run\n"
-                                "\"git revert --continue\".\n"
-                                "You can instead skip this commit with \"git revert --skip\".\n"
-                                "To abort and get back to the state before \"git revert\",\n"
-                                "run \"git revert --abort\"."));
+                       advise_if_enabled(ADVICE_MERGE_CONFLICT,
+                                         _("After resolving the conflicts, mark them with\n"
+                                           "\"git add/rm <pathspec>\", then run\n"
+                                           "\"git revert --continue\".\n"
+                                           "You can instead skip this commit with \"git revert --skip\".\n"
+                                           "To abort and get back to the state before \"git revert\",\n"
+                                           "run \"git revert --abort\"."));
                else
                        BUG("unexpected pick action in print_advice()");
        }
@@ -712,15 +727,15 @@ void append_conflicts_hint(struct index_state *istate,
        if (cleanup_mode == COMMIT_MSG_CLEANUP_SCISSORS) {
                strbuf_addch(msgbuf, '\n');
                wt_status_append_cut_line(msgbuf);
-               strbuf_addch(msgbuf, comment_line_char);
+               strbuf_addstr(msgbuf, comment_line_str);
        }
 
        strbuf_addch(msgbuf, '\n');
-       strbuf_commented_addf(msgbuf, comment_line_char, "Conflicts:\n");
+       strbuf_commented_addf(msgbuf, comment_line_str, "Conflicts:\n");
        for (i = 0; i < istate->cache_nr;) {
                const struct cache_entry *ce = istate->cache[i++];
                if (ce_stage(ce)) {
-                       strbuf_commented_addf(msgbuf, comment_line_char,
+                       strbuf_commented_addf(msgbuf, comment_line_str,
                                              "\t%s\n", ce->name);
                        while (i < istate->cache_nr &&
                               !strcmp(ce->name, istate->cache[i]->name))
@@ -756,6 +771,8 @@ static int do_recursive_merge(struct repository *r,
        o.show_rename_progress = 1;
 
        head_tree = parse_tree_indirect(head);
+       if (!head_tree)
+               return error(_("unable to read tree (%s)"), oid_to_hex(head));
        next_tree = next ? repo_get_commit_tree(r, next) : empty_tree(r);
        base_tree = base ? repo_get_commit_tree(r, base) : empty_tree(r);
 
@@ -819,29 +836,42 @@ static struct object_id *get_cache_tree_oid(struct index_state *istate)
 static int is_index_unchanged(struct repository *r)
 {
        struct object_id head_oid, *cache_tree_oid;
+       const struct object_id *head_tree_oid;
        struct commit *head_commit;
        struct index_state *istate = r->index;
+       const char *head_name;
+
+       if (!resolve_ref_unsafe("HEAD", RESOLVE_REF_READING, &head_oid, NULL)) {
+               /* Check to see if this is an unborn branch */
+               head_name = resolve_ref_unsafe("HEAD",
+                       RESOLVE_REF_READING | RESOLVE_REF_NO_RECURSE,
+                       &head_oid, NULL);
+               if (!head_name ||
+                       !starts_with(head_name, "refs/heads/") ||
+                       !is_null_oid(&head_oid))
+                       return error(_("could not resolve HEAD commit"));
+               head_tree_oid = the_hash_algo->empty_tree;
+       } else {
+               head_commit = lookup_commit(r, &head_oid);
 
-       if (!resolve_ref_unsafe("HEAD", RESOLVE_REF_READING, &head_oid, NULL))
-               return error(_("could not resolve HEAD commit"));
-
-       head_commit = lookup_commit(r, &head_oid);
+               /*
+                * If head_commit is NULL, check_commit, called from
+                * lookup_commit, would have indicated that head_commit is not
+                * a commit object already.  repo_parse_commit() will return failure
+                * without further complaints in such a case.  Otherwise, if
+                * the commit is invalid, repo_parse_commit() will complain.  So
+                * there is nothing for us to say here.  Just return failure.
+                */
+               if (repo_parse_commit(r, head_commit))
+                       return -1;
 
-       /*
-        * If head_commit is NULL, check_commit, called from
-        * lookup_commit, would have indicated that head_commit is not
-        * a commit object already.  repo_parse_commit() will return failure
-        * without further complaints in such a case.  Otherwise, if
-        * the commit is invalid, repo_parse_commit() will complain.  So
-        * there is nothing for us to say here.  Just return failure.
-        */
-       if (repo_parse_commit(r, head_commit))
-               return -1;
+               head_tree_oid = get_commit_tree_oid(head_commit);
+       }
 
        if (!(cache_tree_oid = get_cache_tree_oid(istate)))
                return -1;
 
-       return oideq(cache_tree_oid, get_commit_tree_oid(head_commit));
+       return oideq(cache_tree_oid, head_tree_oid);
 }
 
 static int write_author_script(const char *message)
@@ -1202,7 +1232,7 @@ void cleanup_message(struct strbuf *msgbuf,
                strbuf_setlen(msgbuf, wt_status_locate_end(msgbuf->buf, msgbuf->len));
        if (cleanup_mode != COMMIT_MSG_CLEANUP_NONE)
                strbuf_stripspace(msgbuf,
-                 cleanup_mode == COMMIT_MSG_CLEANUP_ALL ? comment_line_char : '\0');
+                 cleanup_mode == COMMIT_MSG_CLEANUP_ALL ? comment_line_str : NULL);
 }
 
 /*
@@ -1234,7 +1264,7 @@ int template_untouched(const struct strbuf *sb, const char *template_file,
                return 0;
 
        strbuf_stripspace(&tmpl,
-         cleanup_mode == COMMIT_MSG_CLEANUP_ALL ? comment_line_char : '\0');
+         cleanup_mode == COMMIT_MSG_CLEANUP_ALL ? comment_line_str : NULL);
        if (!skip_prefix(sb->buf, tmpl.buf, &start))
                start = sb->buf;
        strbuf_release(&tmpl);
@@ -1608,7 +1638,7 @@ static int try_to_commit(struct repository *r,
 
        if (cleanup != COMMIT_MSG_CLEANUP_NONE)
                strbuf_stripspace(msg,
-                 cleanup == COMMIT_MSG_CLEANUP_ALL ? comment_line_char : '\0');
+                 cleanup == COMMIT_MSG_CLEANUP_ALL ? comment_line_str : NULL);
        if ((flags & EDIT_MSG) && message_is_empty(msg, cleanup)) {
                res = 1; /* run 'git commit' to display error message */
                goto out;
@@ -1770,34 +1800,25 @@ static int allow_empty(struct repository *r,
        int index_unchanged, originally_empty;
 
        /*
-        * Four cases:
-        *
-        * (1) we do not allow empty at all and error out.
+        * For a commit that is initially empty, allow_empty determines if it
+        * should be kept or not
         *
-        * (2) we allow ones that were initially empty, and
-        *     just drop the ones that become empty
-        *
-        * (3) we allow ones that were initially empty, but
-        *     halt for the ones that become empty;
-        *
-        * (4) we allow both.
+        * For a commit that becomes empty, keep_redundant_commits and
+        * drop_redundant_commits determine whether the commit should be kept or
+        * dropped. If neither is specified, halt.
         */
-       if (!opts->allow_empty)
-               return 0; /* let "git commit" barf as necessary */
-
        index_unchanged = is_index_unchanged(r);
        if (index_unchanged < 0)
                return index_unchanged;
        if (!index_unchanged)
                return 0; /* we do not have to say --allow-empty */
 
-       if (opts->keep_redundant_commits)
-               return 1;
-
        originally_empty = is_original_commit_empty(commit);
        if (originally_empty < 0)
                return originally_empty;
        if (originally_empty)
+               return opts->allow_empty;
+       else if (opts->keep_redundant_commits)
                return 1;
        else if (opts->drop_redundant_commits)
                return 2;
@@ -1830,6 +1851,8 @@ static const char *command_to_string(const enum todo_command command)
 {
        if (command < TODO_COMMENT)
                return todo_command_info[command].str;
+       if (command == TODO_COMMENT)
+               return comment_line_str;
        die(_("unknown command: %d"), command);
 }
 
@@ -1837,7 +1860,7 @@ static char command_to_char(const enum todo_command command)
 {
        if (command < TODO_COMMENT)
                return todo_command_info[command].c;
-       return comment_line_char;
+       return 0;
 }
 
 static int is_noop(const enum todo_command command)
@@ -1891,7 +1914,7 @@ static int is_fixup_flag(enum todo_command command, unsigned flag)
 static void add_commented_lines(struct strbuf *buf, const void *str, size_t len)
 {
        const char *s = str;
-       while (len > 0 && s[0] == comment_line_char) {
+       while (starts_with_mem(s, len, comment_line_str)) {
                size_t count;
                const char *n = memchr(s, '\n', len);
                if (!n)
@@ -1902,7 +1925,7 @@ static void add_commented_lines(struct strbuf *buf, const void *str, size_t len)
                s += count;
                len -= count;
        }
-       strbuf_add_commented_lines(buf, s, len, comment_line_char);
+       strbuf_add_commented_lines(buf, s, len, comment_line_str);
 }
 
 /* Does the current fixup chain contain a squash command? */
@@ -1998,11 +2021,11 @@ static int append_squash_message(struct strbuf *buf, const char *body,
             (starts_with(body, "squash!") || starts_with(body, "fixup!"))))
                commented_len = commit_subject_length(body);
 
-       strbuf_addf(buf, "\n%c ", comment_line_char);
+       strbuf_addf(buf, "\n%s ", comment_line_str);
        strbuf_addf(buf, _(nth_commit_msg_fmt),
                    ++ctx->current_fixup_count + 1);
        strbuf_addstr(buf, "\n\n");
-       strbuf_add_commented_lines(buf, body, commented_len, comment_line_char);
+       strbuf_add_commented_lines(buf, body, commented_len, comment_line_str);
        /* buf->buf may be reallocated so store an offset into the buffer */
        fixup_off = buf->len;
        strbuf_addstr(buf, body + commented_len);
@@ -2056,10 +2079,10 @@ static int update_squash_messages(struct repository *r,
                        return error(_("could not read '%s'"),
                                rebase_path_squash_msg());
 
-               eol = buf.buf[0] != comment_line_char ?
+               eol = !starts_with(buf.buf, comment_line_str) ?
                        buf.buf : strchrnul(buf.buf, '\n');
 
-               strbuf_addf(&header, "%c ", comment_line_char);
+               strbuf_addf(&header, "%s ", comment_line_str);
                strbuf_addf(&header, _(combined_commit_msg_fmt),
                            ctx->current_fixup_count + 2);
                strbuf_splice(&buf, 0, eol - buf.buf, header.buf, header.len);
@@ -2085,16 +2108,16 @@ static int update_squash_messages(struct repository *r,
                        repo_unuse_commit_buffer(r, head_commit, head_message);
                        return error(_("cannot write '%s'"), rebase_path_fixup_msg());
                }
-               strbuf_addf(&buf, "%c ", comment_line_char);
+               strbuf_addf(&buf, "%s ", comment_line_str);
                strbuf_addf(&buf, _(combined_commit_msg_fmt), 2);
-               strbuf_addf(&buf, "\n%c ", comment_line_char);
+               strbuf_addf(&buf, "\n%s ", comment_line_str);
                strbuf_addstr(&buf, is_fixup_flag(command, flag) ?
                              _(skip_first_commit_msg_str) :
                              _(first_commit_msg_str));
                strbuf_addstr(&buf, "\n\n");
                if (is_fixup_flag(command, flag))
                        strbuf_add_commented_lines(&buf, body, strlen(body),
-                                                  comment_line_char);
+                                                  comment_line_str);
                else
                        strbuf_addstr(&buf, body);
 
@@ -2109,12 +2132,12 @@ static int update_squash_messages(struct repository *r,
        if (command == TODO_SQUASH || is_fixup_flag(command, flag)) {
                res = append_squash_message(&buf, body, command, opts, flag);
        } else if (command == TODO_FIXUP) {
-               strbuf_addf(&buf, "\n%c ", comment_line_char);
+               strbuf_addf(&buf, "\n%s ", comment_line_str);
                strbuf_addf(&buf, _(skip_nth_commit_msg_fmt),
                            ++ctx->current_fixup_count + 1);
                strbuf_addstr(&buf, "\n\n");
                strbuf_add_commented_lines(&buf, body, strlen(body),
-                                          comment_line_char);
+                                          comment_line_str);
        } else
                return error(_("unknown command: %d"), command);
        repo_unuse_commit_buffer(r, commit, message);
@@ -2615,7 +2638,7 @@ static int parse_insn_line(struct repository *r, struct todo_item *item,
        /* left-trim */
        bol += strspn(bol, " \t");
 
-       if (bol == eol || *bol == '\r' || *bol == comment_line_char) {
+       if (bol == eol || *bol == '\r' || starts_with_mem(bol, eol - bol, comment_line_str)) {
                item->command = TODO_COMMENT;
                item->commit = NULL;
                item->arg_offset = bol - buf;
@@ -2981,6 +3004,9 @@ static int populate_opts_cb(const char *key, const char *value,
        else if (!strcmp(key, "options.allow-empty-message"))
                opts->allow_empty_message =
                        git_config_bool_or_int(key, value, ctx->kvi, &error_flag);
+       else if (!strcmp(key, "options.drop-redundant-commits"))
+               opts->drop_redundant_commits =
+                       git_config_bool_or_int(key, value, ctx->kvi, &error_flag);
        else if (!strcmp(key, "options.keep-redundant-commits"))
                opts->keep_redundant_commits =
                        git_config_bool_or_int(key, value, ctx->kvi, &error_flag);
@@ -3517,54 +3543,57 @@ static int save_opts(struct replay_opts *opts)
 
        if (opts->no_commit)
                res |= git_config_set_in_file_gently(opts_file,
-                                       "options.no-commit", "true");
+                                       "options.no-commit", NULL, "true");
        if (opts->edit >= 0)
-               res |= git_config_set_in_file_gently(opts_file, "options.edit",
+               res |= git_config_set_in_file_gently(opts_file, "options.edit", NULL,
                                                     opts->edit ? "true" : "false");
        if (opts->allow_empty)
                res |= git_config_set_in_file_gently(opts_file,
-                                       "options.allow-empty", "true");
+                                       "options.allow-empty", NULL, "true");
        if (opts->allow_empty_message)
                res |= git_config_set_in_file_gently(opts_file,
-                               "options.allow-empty-message", "true");
+                               "options.allow-empty-message", NULL, "true");
+       if (opts->drop_redundant_commits)
+               res |= git_config_set_in_file_gently(opts_file,
+                               "options.drop-redundant-commits", NULL, "true");
        if (opts->keep_redundant_commits)
                res |= git_config_set_in_file_gently(opts_file,
-                               "options.keep-redundant-commits", "true");
+                               "options.keep-redundant-commits", NULL, "true");
        if (opts->signoff)
                res |= git_config_set_in_file_gently(opts_file,
-                                       "options.signoff", "true");
+                                       "options.signoff", NULL, "true");
        if (opts->record_origin)
                res |= git_config_set_in_file_gently(opts_file,
-                                       "options.record-origin", "true");
+                                       "options.record-origin", NULL, "true");
        if (opts->allow_ff)
                res |= git_config_set_in_file_gently(opts_file,
-                                       "options.allow-ff", "true");
+                                       "options.allow-ff", NULL, "true");
        if (opts->mainline) {
                struct strbuf buf = STRBUF_INIT;
                strbuf_addf(&buf, "%d", opts->mainline);
                res |= git_config_set_in_file_gently(opts_file,
-                                       "options.mainline", buf.buf);
+                                       "options.mainline", NULL, buf.buf);
                strbuf_release(&buf);
        }
        if (opts->strategy)
                res |= git_config_set_in_file_gently(opts_file,
-                                       "options.strategy", opts->strategy);
+                                       "options.strategy", NULL, opts->strategy);
        if (opts->gpg_sign)
                res |= git_config_set_in_file_gently(opts_file,
-                                       "options.gpg-sign", opts->gpg_sign);
+                                       "options.gpg-sign", NULL, opts->gpg_sign);
        for (size_t i = 0; i < opts->xopts.nr; i++)
                res |= git_config_set_multivar_in_file_gently(opts_file,
                                "options.strategy-option",
-                               opts->xopts.v[i], "^$", 0);
+                               opts->xopts.v[i], "^$", NULL, 0);
        if (opts->allow_rerere_auto)
                res |= git_config_set_in_file_gently(opts_file,
-                               "options.allow-rerere-auto",
+                               "options.allow-rerere-auto", NULL,
                                opts->allow_rerere_auto == RERERE_AUTOUPDATE ?
                                "true" : "false");
 
        if (opts->explicit_cleanup)
                res |= git_config_set_in_file_gently(opts_file,
-                               "options.default-msg-cleanup",
+                               "options.default-msg-cleanup", NULL,
                                describe_cleanup_mode(opts->default_msg_cleanup));
        return res;
 }
@@ -3950,6 +3979,8 @@ static int do_reset(struct repository *r,
        }
 
        tree = parse_tree_indirect(&oid);
+       if (!tree)
+               return error(_("unable to read tree (%s)"), oid_to_hex(&oid));
        prime_cache_tree(r, r->index, tree);
 
        if (write_locked_index(r->index, &lock, COMMIT_LOCK) < 0)
@@ -3977,7 +4008,7 @@ static int do_merge(struct repository *r,
        int run_commit_flags = 0;
        struct strbuf ref_name = STRBUF_INIT;
        struct commit *head_commit, *merge_commit, *i;
-       struct commit_list *bases, *j;
+       struct commit_list *bases = NULL, *j;
        struct commit_list *to_merge = NULL, **tail = &to_merge;
        const char *strategy = !opts->xopts.nr &&
                (!opts->strategy ||
@@ -4194,7 +4225,11 @@ static int do_merge(struct repository *r,
        }
 
        merge_commit = to_merge->item;
-       bases = repo_get_merge_bases(r, head_commit, merge_commit);
+       if (repo_get_merge_bases(r, head_commit, merge_commit, &bases) < 0) {
+               ret = -1;
+               goto leave_merge;
+       }
+
        if (bases && oideq(&merge_commit->object.oid,
                           &bases->item->object.oid)) {
                ret = 0;
@@ -5725,8 +5760,8 @@ static int make_script_with_merges(struct pretty_print_context *pp,
                                    oid_to_hex(&commit->object.oid),
                                    oneline.buf);
                        if (is_empty)
-                               strbuf_addf(&buf, " %c empty",
-                                           comment_line_char);
+                               strbuf_addf(&buf, " %s empty",
+                                           comment_line_str);
 
                        FLEX_ALLOC_STR(entry, string, buf.buf);
                        oidcpy(&entry->entry.oid, &commit->object.oid);
@@ -5816,7 +5851,7 @@ static int make_script_with_merges(struct pretty_print_context *pp,
                entry = oidmap_get(&state.commit2label, &commit->object.oid);
 
                if (entry)
-                       strbuf_addf(out, "\n%c Branch %s\n", comment_line_char, entry->string);
+                       strbuf_addf(out, "\n%s Branch %s\n", comment_line_str, entry->string);
                else
                        strbuf_addch(out, '\n');
 
@@ -5953,7 +5988,7 @@ int sequencer_make_script(struct repository *r, struct strbuf *out, int argc,
                            oid_to_hex(&commit->object.oid));
                pretty_print_commit(&pp, commit, out);
                if (is_empty)
-                       strbuf_addf(out, " %c empty", comment_line_char);
+                       strbuf_addf(out, " %s empty", comment_line_str);
                strbuf_addch(out, '\n');
        }
        if (skipped_commit)