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 b142fb32e9ae9711c39fda45b7466011c46599d9..05452c8096e57463e1be68d3a8a52d7535f79dad 100644 (file)
--- 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);