From 46fc386cfba104b5b49ad41465bf920b60291415 Mon Sep 17 00:00:00 2001
From: krasimir <krasimir@chalmers.se>
Date: Wed, 14 Oct 2015 07:36:46 +0000
Subject: [PATCH] bugfix for lookupMorpho in the C runtime

---
 src/runtime/c/pgf/parser.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/runtime/c/pgf/parser.c b/src/runtime/c/pgf/parser.c
index d308943dc..e99c4b400 100644
--- a/src/runtime/c/pgf/parser.c
+++ b/src/runtime/c/pgf/parser.c
@@ -1026,8 +1026,11 @@ pgf_symbols_cmp(GuString* psent, PgfSymbols* syms, bool case_sensitive)
 		PgfSymbol sym = gu_seq_get(syms, PgfSymbol, i);
 
 		if (i > 0) {
-			if (!skip_space(psent))
+			if (!skip_space(psent)) {
+				if (**psent == 0)
+					return -1;
 				return 1;
+			}
 
 			while (**psent != 0) {
 				if (!skip_space(psent))