[PATCH v8 4/7] object-name: make ambiguous object output translatable

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Change the output of show_ambiguous_object() added in [1] and last
tweaked in [2] and the preceding commit to be more friendly to
translators.

By being able to customize the "<SP><SP>%s\n" format we're even ready
for RTL languages, who'd presumably like to change that to
"%s<SP><SP>\n".

In the case of the existing "tag [tag could not be parsed]" output
we'll now instead emit "[bad tag, could not parse it]". This is
consistent with the "[bad object]" output. Rephrasing the message like
this is possible because we're not unconditionally adding the
type_name() at the beginning.

1. 1ffa26c461 (get_short_sha1: list ambiguous objects on error,
   2016-09-26)
2. 5cc044e0257 (get_short_oid: sort ambiguous objects by type,
   then SHA-1, 2018-05-10)

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@xxxxxxxxx>
Signed-off-by: Josh Steadmon <steadmon@xxxxxxxxxx>
---
 object-name.c | 78 ++++++++++++++++++++++++++++++++++++++++++++-------
 1 file changed, 68 insertions(+), 10 deletions(-)

diff --git a/object-name.c b/object-name.c
index 298b742bac9..f31b50bc315 100644
--- a/object-name.c
+++ b/object-name.c
@@ -356,40 +356,98 @@ static int show_ambiguous_object(const struct object_id *oid, void *data)
 	const struct disambiguate_state *ds = data;
 	struct strbuf desc = STRBUF_INIT;
 	int type;
+	const char *hash;
 
 	if (ds->fn && !ds->fn(ds->repo, oid, ds->cb_data))
 		return 0;
 
+	hash = repo_find_unique_abbrev(ds->repo, oid, DEFAULT_ABBREV);
 	type = oid_object_info(ds->repo, oid, NULL);
 
 	if (type < 0) {
-		strbuf_addstr(&desc, "[bad object]");
+		/*
+		 * TRANSLATORS: This is a line of ambiguous object
+		 * output shown when we cannot look up or parse the
+		 * object in question. E.g. "deadbeef [bad object]".
+		 */
+		strbuf_addf(&desc, _("%s [bad object]"), hash);
 		goto out;
 	}
 
 	assert(type == OBJ_TREE || type == OBJ_COMMIT ||
 	       type == OBJ_BLOB || type == OBJ_TAG);
-	strbuf_addstr(&desc, type_name(type));
 
 	if (type == OBJ_COMMIT) {
+		struct strbuf date = STRBUF_INIT;
+		struct strbuf msg = STRBUF_INIT;
 		struct commit *commit = lookup_commit(ds->repo, oid);
+
 		if (commit) {
 			struct pretty_print_context pp = {0};
 			pp.date_mode.type = DATE_SHORT;
-			format_commit_message(commit, " %ad - %s", &desc, &pp);
+			format_commit_message(commit, "%ad", &date, &pp);
+			format_commit_message(commit, "%s", &msg, &pp);
 		}
+
+		/*
+		 * TRANSLATORS: This is a line of ambiguous commit
+		 * object output. E.g.:
+		 *
+		 *    "deadbeef commit 2021-01-01 - Some Commit Message"
+		 */
+		strbuf_addf(&desc, _("%s commit %s - %s"),
+			    hash, date.buf, msg.buf);
+
+		strbuf_release(&date);
+		strbuf_release(&msg);
 	} else if (type == OBJ_TAG) {
 		struct tag *tag = lookup_tag(ds->repo, oid);
-		if (!parse_tag(tag) && tag->tag)
-			strbuf_addf(&desc, " %s", tag->tag);
-		else
-			strbuf_addstr(&desc, " [tag could not be parsed]");
+
+		if (!parse_tag(tag) && tag->tag) {
+			/*
+			 * TRANSLATORS: This is a line of ambiguous
+			 * tag object output. E.g.:
+			 *
+			 *    "deadbeef tag Some Tag Message"
+			 *
+			 * The second argument is the "tag" string
+			 * from object.c.
+			 */
+			strbuf_addf(&desc, _("%s tag %s"), hash, tag->tag);
+		} else {
+			/*
+			 * TRANSLATORS: This is a line of ambiguous
+			 * tag object output where we couldn't parse
+			 * the tag itself. E.g.:
+			 *
+			 *    "deadbeef tag [bad tag, could not parse it]"
+			 */
+			strbuf_addf(&desc, _("%s [bad tag, could not parse it]"),
+				    hash);
+		}
+	} else if (type == OBJ_TREE) {
+		/*
+		 * TRANSLATORS: This is a line of ambiguous <type>
+		 * object output. E.g. "deadbeef tree".
+		 */
+		strbuf_addf(&desc, _("%s tree"), hash);
+	} else if (type == OBJ_BLOB) {
+		/*
+		 * TRANSLATORS: This is a line of ambiguous <type>
+		 * object output. E.g. "deadbeef blob".
+		 */
+		strbuf_addf(&desc, _("%s blob"), hash);
 	}
 
+
 out:
-	advise("  %s %s",
-	       repo_find_unique_abbrev(ds->repo, oid, DEFAULT_ABBREV),
-	       desc.buf);
+	/*
+	 * TRANSLATORS: This is line item of ambiguous object output
+	 * from describe_ambiguous_object() above. For RTL languages
+	 * you'll probably want to swap the "%s" and leading " " space
+	 * around.
+	 */
+	advise(_("  %s"), desc.buf);
 
 	strbuf_release(&desc);
 	return 0;
-- 
2.35.0.890.gd7e422415d9




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