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-rw-r--r--activesupport/lib/active_support/inflector/methods.rb3
1 files changed, 1 insertions, 2 deletions
diff --git a/activesupport/lib/active_support/inflector/methods.rb b/activesupport/lib/active_support/inflector/methods.rb
index 8e546c0176..d063fcb49c 100644
--- a/activesupport/lib/active_support/inflector/methods.rb
+++ b/activesupport/lib/active_support/inflector/methods.rb
@@ -89,8 +89,7 @@ module ActiveSupport
#
# 'SSLError'.underscore.camelize # => "SslError"
def underscore(camel_cased_word)
- word = camel_cased_word.to_s.dup
- word.gsub!('::', '/')
+ word = camel_cased_word.to_s.gsub('::', '/')
word.gsub!(/(?:([A-Za-z\d])|^)(#{inflections.acronym_regex})(?=\b|[^a-z])/) { "#{$1}#{$1 && '_'}#{$2.downcase}" }
word.gsub!(/([A-Z\d]+)([A-Z][a-z])/,'\1_\2')
word.gsub!(/([a-z\d])([A-Z])/,'\1_\2')