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-rw-r--r--activesupport/lib/active_support/configurable.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/activesupport/lib/active_support/configurable.rb b/activesupport/lib/active_support/configurable.rb
index e0d39d509f..bafcadff9a 100644
--- a/activesupport/lib/active_support/configurable.rb
+++ b/activesupport/lib/active_support/configurable.rb
@@ -107,7 +107,7 @@ module ActiveSupport
options = names.extract_options!
names.each do |name|
- raise NameError.new('invalid config attribute name') unless name =~ /^[_A-Za-z]\w*$/
+ raise NameError.new('invalid config attribute name') unless name =~ /\A[_A-Za-z]\w*\Z/
reader, reader_line = "def #{name}; config.#{name}; end", __LINE__
writer, writer_line = "def #{name}=(value); config.#{name} = value; end", __LINE__