pretty: add pointer and tag options to %(decorate)

Add pointer and tag options to %(decorate) format, to allow to override
the " -> " string used to show where HEAD points and the "tag: " string
used to mark tags.

Document in pretty-formats.txt and test in t4205-log-pretty-formats.sh.

Signed-off-by: Andy Koppe <andy.koppe@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 5 insertions, 1 deletions

diff --git a/pretty.c b/pretty.c
index 1639efe2f8..7f3abb676c 100644
--- a/pretty.c
+++ b/pretty.c
@@ -1407,7 +1407,9 @@ static void parse_decoration_options(const char **arg,
 {
 	while (parse_decoration_option(arg, "prefix", &opts->prefix) ||
 	       parse_decoration_option(arg, "suffix", &opts->suffix) ||
-	       parse_decoration_option(arg, "separator", &opts->separator))
+	       parse_decoration_option(arg, "separator", &opts->separator) ||
+	       parse_decoration_option(arg, "pointer", &opts->pointer) ||
+	       parse_decoration_option(arg, "tag", &opts->tag))
 		;
 }
 
@@ -1416,6 +1418,8 @@ static void free_decoration_options(const struct decoration_options *opts)
 	free(opts->prefix);
 	free(opts->suffix);
 	free(opts->separator);
+	free(opts->pointer);
+	free(opts->tag);
 }
 
 static size_t format_commit_one(struct strbuf *sb, /* in UTF-8 */