bug#52038: Completion for user mailcap entries

[Arash Esbati <arash@gnu.org>]

Lars Ingebrigtsen <larsi@gnus.org> writes:

> The entries you are seeing as vnd\.ms-excel etc come from here:
>
> (defvar mailcap-mime-data
>   `(("application"
>      ("vnd\\.ms-excel"
>       (viewer . "gnumeric %s")
>
> These are regexps, and we want to specify that we're matching the "."
> character, and not the [.] character class, so we don't match
> "vndxms-excel".  That's probably overly pedantic, but...
>
> But I think this is working as designed, and I'm therefore closing this
> bug report.

Thanks for looking at this.  My impression back then was that the entry
"application/vnd.ms-excel" is coming from `mailcap-mime-data' and
"application/vnd\.ms-excel" is generated by the function
`mailcap-parse-mailcap' which is called inside `mailcap-parse-mailcaps'
where the former pushes the entries in ~/.mailcap through
`regexp-quote'.  So I think the bug is that 2 different entries are
generated for the same mime-type.  Or am I missing something?

Best, Arash