Handle warning formats produced by prism compiler

Most prism warnings are the same as parse.y, but there are a
couple that are different.

Author: jeremyevans

CHANGELOG

@@ -1,5 +1,7 @@
 === master
 
+* Handle warning formats produced by prism compiler (jeremyevans)
+
 * Add support for :default_gem_removal as regexp argument to Warning.ignore (jamiemccarthy, jeremyevans) (#24)
 
 === 1.4.0 (2024-05-24)

lib/warning.rb

@@ -4,8 +4,8 @@ module Warning
   module Processor
     # Map of symbols to regexps for warning messages to ignore.
     IGNORE_MAP = {
-      ambiguous_slash: /: warning: ambiguous first argument; put parentheses or a space even after [`']\/' operator\n\z|: warning: ambiguity between regexp and two divisions: wrap regexp in parentheses or add a space after [`']\/' operator\n\z/,
-      arg_prefix: /: warning: [`'][&\*]' interpreted as argument prefix\n\z/,
+      ambiguous_slash: /: warning: ambiguous first argument; put parentheses or a space even after [`']\/' operator\n\z|: warning: ambiguity between regexp and two divisions: wrap regexp in parentheses or add a space after [`']\/' operator\n\z|ambiguous `\/`; wrap regexp in parentheses or add a space after `\/` operator\n\z/,
+      arg_prefix: /: warning: ([`'][&\*]'||ambiguous `[\*&]` has been) interpreted as( an)? argument prefix\n\z/,
       bignum: /: warning: constant ::Bignum is deprecated\n\z/,
       default_gem_removal: /: warning: .+? was loaded from the standard library, but will no longer be part of the default gems starting from Ruby [\d.]+\./,
       fixnum: /: warning: constant ::Fixnum is deprecated\n\z/,

test/test_warning.rb

@@ -340,11 +340,11 @@ def test_warning_ignore_useless_operator
   end
 
   def test_warning_ignore_arg_prefix
-    assert_warning(/: warning: [`']\*' interpreted as argument prefix/) do
+    assert_warning(/: warning: ([`']\*'|ambiguous `\*` has been) interpreted as( an)? argument prefix/) do
       instance_eval('Array *[nil]', __FILE__)
     end
 
-    assert_warning(/: warning: [`']&' interpreted as argument prefix/) do
+    assert_warning(/: warning: ([`']&'|ambiguous `&` has been) interpreted as( an)? argument prefix/) do
       instance_eval('tap &proc{}', __FILE__)
     end
     Warning.ignore(:arg_prefix, __FILE__)