Add new @ shortcut for HEAD

diff --git a/refs.c b/refs.c
index de2d8eb866062649a0d0f23a77e350bca1a182cd..4e70b3eca037a084fae0eae00386cd040305ce21 100644 (file)
--- a/refs.c
+++ b/refs.c
@@ -72,6 +72,10 @@ int check_refname_format(const char *refname, int flags)
 {
        int component_len, component_count = 0;
 
+       if (!strcmp(refname, "@"))
+               /* Refname is a single character '@'. */
+               return -1;
+
        while (1) {
                /* We are at the start of a path component. */
                component_len = check_refname_component(refname, flags);