refspec: move refspec parsing logic into its own file

diff --git a/builtin/submodule--helper.c b/builtin/submodule--helper.c
index 7586f776fe3cf2140c86f1f1842389f186929201..6ab032acb1a77b3188644393e647fec6991753c8 100644 (file)
--- a/builtin/submodule--helper.c
+++ b/builtin/submodule--helper.c
@@ -12,6 +12,7 @@
 #include "run-command.h"
 #include "remote.h"
 #include "refs.h"
+#include "refspec.h"
 #include "connect.h"
 #include "revision.h"
 #include "diffcore.h"
@@ -596,8 +597,12 @@ static void print_status(unsigned int flags, char state, const char *path,
 
        printf("%c%s %s", state, oid_to_hex(oid), displaypath);
 
-       if (state == ' ' || state == '+')
-               printf(" (%s)", compute_rev_name(path, oid_to_hex(oid)));
+       if (state == ' ' || state == '+') {
+               const char *name = compute_rev_name(path, oid_to_hex(oid));
+
+               if (name)
+                       printf(" (%s)", name);
+       }
 
        printf("\n");
 }