From: Emden Gansner <erg@research.att.com>
Date: Tue, 8 Nov 2011 18:18:57 +0000 (-0500)
Subject: Don't reset LexPtr unless file changes. This allows multiple graphs
X-Git-Tag: LAST_LIBGRAPH~32^2~603^2
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=ff3c0115a73ae01d00766a4555093ea182ff14c1;p=graphviz

Don't reset LexPtr unless file changes. This allows multiple graphs
on the same line.
---

diff --git a/lib/graph/lexer.c b/lib/graph/lexer.c
index b142fb32e..05452c809 100644
--- a/lib/graph/lexer.c
+++ b/lib/graph/lexer.c
@@ -73,12 +73,13 @@ void agsetfile(char *f)
 
 void aglexinit(FILE * fp, gets_f mygets)
 {
+    if (Lexer_fp != fp)
+	LexPtr = NULL;
     Lexer_fp = fp;
     if (mygets)
         AG.fgets = mygets;
     if (AG.fgets == NULL)
 	AG.fgets = fgets;
-    LexPtr = NULL;
     if (AG.linebuf == NULL) {
 	LineBufSize = BUFSIZ;
 	AG.linebuf = N_NEW(LineBufSize, char);