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-rw-r--r--activesupport/lib/active_support/xml_mini.rb5
1 files changed, 4 insertions, 1 deletions
diff --git a/activesupport/lib/active_support/xml_mini.rb b/activesupport/lib/active_support/xml_mini.rb
index dff8a8f4c4..d8f40ab8b1 100644
--- a/activesupport/lib/active_support/xml_mini.rb
+++ b/activesupport/lib/active_support/xml_mini.rb
@@ -139,7 +139,10 @@ module ActiveSupport
protected
def _dasherize(key)
- key.gsub(/(?!^[_]*)_(?![_]*$)/, '-')
+ left = key.strip.rpartition(/^_*/)
+ right = left.pop.partition(/_*$/)
+ right.first.tr!('_ ', '--')
+ left.concat(right).join
end
# TODO: Add support for other encodings