[PATCH] diff: use filespec as in-place size cache

From: Junio C Hamano <junkio@cox.net>
Date: May 6, 2007, 08:51 UTC
Message-ID: <7vfy6acp32.fsf@assigned-by-dhcp.cox.net>
In-Reply-To: <7vr6pucp9e.fsf@assigned-by-dhcp.cox.net>

When we have a filespec primed with size, later size_only request should be fillable without recomputing it.

---

diff --git a/diff.c b/diff.c
index 0f8c68f..fb3eba5 100644
--- a/diff.c
+++ b/diff.c
@@ -1515,6 +1515,9 @@ int diff_populate_filespec(struct diff_filespec *s, int size_only)
 	if (s->data)
 		return err;
 
+	if (size_only && 0 < s->size)
+		return err;
+
 	if (S_ISDIRLNK(s->mode))
 		return diff_populate_gitlink(s, size_only);