ghc_cmm.rb in rouge-4.2.1

- old
+ new

@@ -20,14 +20,14 @@
       aliases 'cmm'
 
       ws = %r(\s|//.*?\n|/[*](?:[^*]|(?:[*][^/]))*[*]+/)mx
 
       # Make sure that this is not a preprocessor macro, e.g. `#if` or `#define`.
-      id = %r((?!\#[a-zA-Z])[\w#\$%_']+)
+      id = %r((?!\#[a-zA-Z])[\w#\$%']+)
 
       complex_id = %r(
-        (?:[\w#$%_']|\(\)|\(,\)|\[\]|[0-9])*
-        (?:[\w#$%_']+)
+        (?:[\w#$%']|\(\)|\(,\)|\[\]|[0-9])*
+        (?:[\w#$%']+)
       )mx
 
       state :root do
         rule %r/\s+/m, Text
 