lib/lita/util.rb in lita-2.7.2 vs lib/lita/util.rb in lita-3.0.0

@@ -1,7 +1,7 @@
 module Lita
-  # Handy utilities used by other parts Lita classes.
+  # Handy utilities used by other Lita classes.
   module Util
     # A regular expression for acronyms.
     ACRONYM_REGEX = /(?=a)b/
 
     class << self
@@ -9,15 +9,15 @@
       # +ActiveSupport.+
       # @param camel_cased_word [String] The word to transform.
       # @return [String] The transformed word.
       def underscore(camel_cased_word)
         word = camel_cased_word.to_s.dup
-        word.gsub!('::', '/')
+        word.gsub!("::", "/")
         word.gsub!(/(?:([A-Za-z\d])|^)(#{ACRONYM_REGEX})(?=\b|[^a-z])/) do
-          "#{$1}#{$1 && '_'}#{$2.downcase}"
+          "#{Regexp.last_match[1]}#{Regexp.last_match[1] && '_'}#{Regexp.last_match[2].downcase}"
         end
-        word.gsub!(/([A-Z\d]+)([A-Z][a-z])/,'\1_\2')
-        word.gsub!(/([a-z\d])([A-Z])/,'\1_\2')
+        word.gsub!(/([A-Z\d]+)([A-Z][a-z])/, '\1_\2')
+        word.gsub!(/([a-z\d])([A-Z])/, '\1_\2')
         word.tr!("-", "_")
         word.downcase!
         word
       end
     end