Return same string object when no interpolations were made #649
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See for the details - rails/rails#47421
Even when there are no interpolations,
gsub
turnsSafeBuffer
into aString
- https://github.com/rails/rails/blob/6af9cba73db6296ab9aec7dbeae1e193ea69f09f/activesupport/lib/active_support/core_ext/string/output_safety.rb#L169So we need to preserve the original "string" object.