listbas: exit with status 2 on invaid tokens, add note to doc about aha.

1 files changed, 4 insertions, 2 deletions

diff --git a/listbas.c b/listbas.c
index fd7d8aa..ef3f031 100644
--- a/listbas.c
+++ b/listbas.c
@@ -321,8 +321,10 @@ int main(int argc, char **argv) {
 	setup_outfh();
 	list();
 
-	if(badtok)
-		die("program has unknown tokens; maybe Turbo BASIC or BASIC XL/XE?");
+	if(badtok) {
+		fprintf(stderr, "%s: program has unknown tokens; maybe Turbo BASIC or BASIC XL?", self);
+		return 2;
+	}
 
 	return 0;
 }