Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|diff --git a/config.def.h b/config.def.h
|index 877afab..6a1699f 100644
|--- a/config.def.h
|+++ b/config.def.h
--------------------------
Patching file config.def.h using Plan A...
Hunk #1 succeeded at 84.
done