Add a trailing guard to the magic-rewrite recignizer.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/scan.l b/src/scan.l
index 87c0d47..871130c 100644
--- a/src/scan.l
+++ b/src/scan.l
@@ -970,13 +970,13 @@ nmstr[yyleng - 2 - end_is_ws] = '\0';  /* chop trailing brace */
 			add_action(yytext);
 			add_action("[""[");
 	}
-	yyin|yyout|yyextra|yyleng|yytext|yyflexdebug {
+	(yyin|yyout|yyextra|yyleng|yytext|yyflexdebug)/[^[:alnum:]_] {
 			if (ctrl.rewrite)
 				context_member(yytext, "M4_PROPERTY_CONTEXT_FORMAT");
 			else
 				ACTION_ECHO;
 	}
-	yylineno|yycolumn {
+	(yylineno|yycolumn)/[^[:alnum:]_] {
 			if (ctrl.rewrite)
 				context_member(yytext, "M4_PROPERTY_BUFFERSTACK_CONTEXT_FORMAT");
 			else