Improve parsing of MIME parameter part#103
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Fix problem where single encoded + unencoded MIME parameter of same name get concatenated.
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- Fix problem where single encoded + unencoded MIME parameter of same name get concatenated (thanks to @stefanw at mailgun/flanker#103) - Prevent concatenating any splitted and unsplitted parameters - Improve docstring of concatenate()
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I have mails with MIME headers like this:
The parameter
nameandfilenameare present as single encoded and single unencoded. This leads to an interpretation as a parameter continuation and to a concatenation of the values so that the result would be "30676_2015.pdf30676_2015.pdf".I added code to avoid joining parameter values of the same name if they are not actually continuations, but just different encodings of the same value. Test is included!