+static char *resolve_relative_path(const char *rel)
+{
+ if (prefixcmp(rel, "./") && prefixcmp(rel, "../"))
+ return NULL;
+
+ if (!startup_info)
+ die("BUG: startup_info struct is not initialized.");
+
+ if (!is_inside_work_tree())
+ die("relative path syntax can't be used outside working tree.");
+
+ /* die() inside prefix_path() if resolved path is outside worktree */
+ return prefix_path(startup_info->prefix,
+ startup_info->prefix ? strlen(startup_info->prefix) : 0,
+ rel);
+}
+