name-rev: refactor logic to see if a new candidate is a better name

diff --git a/builtin/tag.c b/builtin/tag.c
index e40c4a96763a371b104a5bf47e6d839ed93e8ef5..ad29be692384454ffd2f35f134d49c227ae1a67b 100644 (file)
--- a/builtin/tag.c
+++ b/builtin/tag.c
@@ -45,11 +45,11 @@ static int list_tags(struct ref_filter *filter, struct ref_sorting *sorting, con
        if (!format) {
                if (filter->lines) {
                        to_free = xstrfmt("%s %%(contents:lines=%d)",
-                                         "%(align:15)%(refname:strip=2)%(end)",
+                                         "%(align:15)%(refname:lstrip=2)%(end)",
                                          filter->lines);
                        format = to_free;
                } else
-                       format = "%(refname:strip=2)";
+                       format = "%(refname:lstrip=2)";
        }
 
        verify_ref_format(format);
@@ -97,7 +97,7 @@ static int for_each_tag_name(const char **argv, each_tag_name_fn fn,
 static int delete_tag(const char *name, const char *ref,
                      const unsigned char *sha1, const void *cb_data)
 {
-       if (delete_ref(ref, sha1, 0))
+       if (delete_ref(NULL, ref, sha1, 0))
                return 1;
        printf(_("Deleted tag '%s' (was %s)\n"), name, find_unique_abbrev(sha1, DEFAULT_ABBREV));
        return 0;
@@ -302,6 +302,54 @@ static void create_tag(const unsigned char *object, const char *tag,
        }
 }
 
+static void create_reflog_msg(const unsigned char *sha1, struct strbuf *sb)
+{
+       enum object_type type;
+       struct commit *c;
+       char *buf;
+       unsigned long size;
+       int subject_len = 0;
+       const char *subject_start;
+
+       char *rla = getenv("GIT_REFLOG_ACTION");
+       if (rla) {
+               strbuf_addstr(sb, rla);
+       } else {
+               strbuf_addstr(sb, _("tag: tagging "));
+               strbuf_add_unique_abbrev(sb, sha1, DEFAULT_ABBREV);
+       }
+
+       strbuf_addstr(sb, " (");
+       type = sha1_object_info(sha1, NULL);
+       switch (type) {
+       default:
+               strbuf_addstr(sb, _("object of unknown type"));
+               break;
+       case OBJ_COMMIT:
+               if ((buf = read_sha1_file(sha1, &type, &size)) != NULL) {
+                       subject_len = find_commit_subject(buf, &subject_start);
+                       strbuf_insert(sb, sb->len, subject_start, subject_len);
+               } else {
+                       strbuf_addstr(sb, _("commit object"));
+               }
+               free(buf);
+
+               if ((c = lookup_commit_reference(sha1)) != NULL)
+                       strbuf_addf(sb, ", %s", show_date(c->date, 0, DATE_MODE(SHORT)));
+               break;
+       case OBJ_TREE:
+               strbuf_addstr(sb, _("tree object"));
+               break;
+       case OBJ_BLOB:
+               strbuf_addstr(sb, _("blob object"));
+               break;
+       case OBJ_TAG:
+               strbuf_addstr(sb, _("other tag object"));
+               break;
+       }
+       strbuf_addch(sb, ')');
+}
+
 struct msg_arg {
        int given;
        struct strbuf buf;
@@ -335,6 +383,7 @@ int cmd_tag(int argc, const char **argv, const char *prefix)
 {
        struct strbuf buf = STRBUF_INIT;
        struct strbuf ref = STRBUF_INIT;
+       struct strbuf reflog_msg = STRBUF_INIT;
        unsigned char object[20], prev[20];
        const char *object_ref, *tag;
        struct create_tag_options opt;
@@ -389,6 +438,8 @@ int cmd_tag(int argc, const char **argv, const char *prefix)
                OPT_END()
        };
 
+       setup_ref_filter_porcelain_msg();
+
        git_config(git_tag_config, sorting_tail);
 
        memset(&opt, 0, sizeof(opt));
@@ -494,6 +545,8 @@ int cmd_tag(int argc, const char **argv, const char *prefix)
        else
                die(_("Invalid cleanup mode %s"), cleanup_arg);
 
+       create_reflog_msg(object, &reflog_msg);
+
        if (create_tag_object) {
                if (force_sign_annotate && !annotate)
                        opt.sign = 1;
@@ -504,7 +557,7 @@ int cmd_tag(int argc, const char **argv, const char *prefix)
        if (!transaction ||
            ref_transaction_update(transaction, ref.buf, object, prev,
                                   create_reflog ? REF_FORCE_CREATE_REFLOG : 0,
-                                  NULL, &err) ||
+                                  reflog_msg.buf, &err) ||
            ref_transaction_commit(transaction, &err))
                die("%s", err.buf);
        ref_transaction_free(transaction);
@@ -514,5 +567,6 @@ int cmd_tag(int argc, const char **argv, const char *prefix)
        strbuf_release(&err);
        strbuf_release(&buf);
        strbuf_release(&ref);
+       strbuf_release(&reflog_msg);
        return 0;
 }