Fix stringify_headers so it can handle hyphenated symbols #650
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…s into strings (like it does with underscores already)
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In what way does this break compatibility? If it does, maybe it can't go into 2.x? |
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stringify_headersincorrectly assumed symbolized header keys only use underscores for separating words. However, symbols may also contain hyphens for that purpose. E.g.{'Content-Type': 'application/json'}has to be treated the same way as{:content_type => 'application/json'}.