completion: fix zsh check under bash with 'set -u'

diff --git a/sha1_name.c b/sha1_name.c
index 7b7e61719fa63e41917b41240061c68e3cbabf01..484081de82928108a23a714a76ea88693e56bdd1 100644 (file)
--- a/sha1_name.c
+++ b/sha1_name.c
@@ -1062,6 +1062,7 @@ int get_sha1_with_context_1(const char *name, unsigned char *sha1,
        /* sha1:path --> object name of path in ent sha1
         * :path -> object name of path in index
         * :[0-3]:path -> object name of path in index at stage
+        * :/foo -> recent commit matching foo
         */
        if (name[0] == ':') {
                int stage = 0;