From cf8718b69cbf8edfa51286b69d14aafb1dcc5ff8 Mon Sep 17 00:00:00 2001
From: Josh Holtrop <jholtrop@gmail.com>
Date: Mon, 17 May 2021 22:40:23 -0400
Subject: [PATCH] Allow token definition with no pattern

---
 lib/imbecile/grammar.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/imbecile/grammar.rb b/lib/imbecile/grammar.rb
index b71823e..2757e72 100644
--- a/lib/imbecile/grammar.rb
+++ b/lib/imbecile/grammar.rb
@@ -21,7 +21,7 @@ module Imbecile
           @modulename = $1
         elsif line =~ /^\s*class\s+(\S+)$/
           @classname = $1
-        elsif line =~ /^\s*token\s+(\S+)\s+(.*)$/
+        elsif line =~ /^\s*token\s+(\S+)(?:\s+(.*))?$/
           name, expr = $1, $2
           if expr == ""
             expr = name