completion: improve ls-remote output filtering in __git_refs()

diff --git a/dir.c b/dir.c
index 7bc75c94486b0419039e54185c29ae2657e26d6b..6c0d7825799f6c35a2c1f1830767ab6203e2da92 100644 (file)
--- a/dir.c
+++ b/dir.c
@@ -34,7 +34,7 @@ int fnmatch_icase(const char *pattern, const char *string, int flags)
        return fnmatch(pattern, string, flags | (ignore_case ? FNM_CASEFOLD : 0));
 }
 
-size_t common_prefix_len(const char **pathspec)
+static size_t common_prefix_len(const char **pathspec)
 {
        const char *n, *first;
        size_t max = 0;
@@ -61,6 +61,17 @@ size_t common_prefix_len(const char **pathspec)
        return max;
 }
 
+/*
+ * Returns a copy of the longest leading path common among all
+ * pathspecs.
+ */
+char *common_prefix(const char **pathspec)
+{
+       unsigned long len = common_prefix_len(pathspec);
+
+       return len ? xmemdupz(*pathspec, len) : NULL;
+}
+
 int fill_directory(struct dir_struct *dir, const char **pathspec)
 {
        const char *path;