t / t4135 / diff-with quote.diffon commit color.c: fix color_parse_mem() with value_len == 0 (c2f41bf)
   1--- "postimage".txt.orig        2010-08-18 20:13:31.744002255 -0500
   2+++ "postimage".txt     2010-08-18 20:13:31.744002255 -0500
   3@@ -1 +1 @@
   4-preimage
   5+postimage