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-rw-r--r--actionview/lib/action_view/helpers/url_helper.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/actionview/lib/action_view/helpers/url_helper.rb b/actionview/lib/action_view/helpers/url_helper.rb
index 8a4918a8c0..2f5246f42a 100644
--- a/actionview/lib/action_view/helpers/url_helper.rb
+++ b/actionview/lib/action_view/helpers/url_helper.rb
@@ -455,7 +455,7 @@ module ActionView
html_options, name = name, nil if block_given?
html_options = (html_options || {}).stringify_keys
- extras = %w{ cc bcc body subject }.map { |item|
+ extras = %w{ cc bcc body subject }.map! { |item|
option = html_options.delete(item) || next
"#{item}=#{Rack::Utils.escape_path(option)}"
}.compact