Subject: Re: bug#35443: 27.0.50; Gnus (nnimap) shows "ghost" messages in summary buffer

From: Lars Ingebrigtsen <[email-masked]>
Date: Fri, 12 Jul 2019 16:18:02 +0200

Eric Abrahamsen <[email-masked]> writes:

> Which is obviously insufficient. I've since changed it to:
>
> "\\([A-Z][[:ascii:]-]+: \\)"
>
> Which works better, but also seems susceptible to breakage due to
> ignorance. A quick scan doesn't turn up any `mail-header-regexp'
> variables or `this-is-a-mail-header-p' functions -- does the above
> regexp seem reasonable?

Headers are case insensitive...  but not all characters in the [:ascii:]
set are allowed; far from it.  [:alnum:] is closer, but with - and...
er...  stuff...  One of the RFCs probably has the definition.  :-)

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no