Handle quantification of vanishing things.

Raku · Oct 7, 2012 · 5591588 · 5591588
1 parent 9e503bd
commit 5591588
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/QRegex/P5Regex/Actions.nqp b/src/QRegex/P5Regex/Actions.nqp
@@ -44,7 +44,7 @@ class QRegex::P5Regex::Actions is HLL::Actions {
         my $qast := $<atom>.ast;
         if $<quantifier> {
             my $ast := $<quantifier>[0].ast;
-            $ast.unshift($qast);
+            $ast.unshift($qast || QAST::Regex.new( :rxtype<anchor>, :name<pass> ));
             $qast := $ast;
         }
         $qast.backtrack('r') if $qast && !$qast.backtrack && %*RX<r>;