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-rw-r--r--actionpack/lib/action_view/helpers/number_helper.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/actionpack/lib/action_view/helpers/number_helper.rb b/actionpack/lib/action_view/helpers/number_helper.rb
index 1c0fdb8ff9..857c4fd992 100644
--- a/actionpack/lib/action_view/helpers/number_helper.rb
+++ b/actionpack/lib/action_view/helpers/number_helper.rb
@@ -114,6 +114,7 @@ module ActionView
defaults = I18n.translate(:'number.format', :locale => options[:locale], :default => {})
currency = I18n.translate(:'number.currency.format', :locale => options[:locale], :default => {})
+ currency[:negative_format] ||= "-" + currency[:format] if currency[:format]
defaults = DEFAULT_CURRENCY_VALUES.merge(defaults).merge!(currency)
defaults[:negative_format] = "-" + options[:format] if options[:format]