content_type_parameters fails when parameters have extraneous whitespace

[Botster]

When parsing either a single-part or MultiPart email that has extra white space surrounding the equal sign in a ContentType parameter definition (ie. 'Content-Type: text/html; charset = "iso-8859-1"'), content_type_parameters does not appear to recognize the parameter.

I do not know off-hand and have been unable to determine by my research if extra whitespace in the parameter specification is a violation of the internet message RFC, but TMail did (does) not have a problem with it.

[jeremy]

Works now:

> Mail.new(%(Content-Type: text/html; charset = "iso-8859-1"\r\n\r\n)).charset
=> "iso-8859-1"