[RFC 7/8] Convert symlink dest in diff

[Robin Rosenberg <robin.rosenberg@dewire.com>]

---
 diff.c |   14 ++++++++++++--
 1 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/diff.c b/diff.c
index 170ec5a..c8132a4 100644
--- a/diff.c
+++ b/diff.c
@@ -1319,8 +1319,18 @@ int diff_populate_filespec(struct diff_filespec *s, int size_only)
 				locate_size_cache(s->sha1, 0, s->size);
 		}
 		else {
-			s->data = read_sha1_file(s->sha1, type, &s->size);
-			s->should_free = 1;
+			if (S_ISLNK(s->mode)) {
+				int linksize;
+			        char *linkdata = read_sha1_file(s->sha1, type, &linksize);
+				s->size = locallen(linkdata, linksize);
+				s->data = xmalloc(s->size + 1);
+				localcpy(s->data, linkdata, linksize + 1);
+				s->should_free = 1;
+				free(linkdata);
+			} else {
+				s->data = read_sha1_file(s->sha1, type, &s->size);
+				s->should_free = 1;
+			}
 		}
 	}
 	return 0;
-- 
1.6.3.dirty