bug#18198: Gnus fails to read ~/.newsrc with group names which are not symbols

[Eric Abrahamsen]

Ivan Shmakov <ivan@siamics.net> writes:

>>>>>> Lars Ingebrigtsen <larsi@gnus.org> writes:
>>>>>> Ivan Shmakov <ivan@siamics.net> writes:
>
> […]
>
>  >> Here, the “group” field of .newsrc is read as an Emacs Lisp
>  >> expression.  Which may result either in an error, or, in the case of
>  >> [Hello]/World – and, similarly, (Hello)/World – in only the leading
>  >> [Hello] or (Hello) being actually read.
>
>  > Well, "[Hello]/World" isn't a valid newsgroup name,
>
>       Yet (Hello)/World is.  (Per the newsgroup-name and wildmat-exact
>       productions given in section 9.8 of RFC 3977.)
>
>  > and I think only newsgroups are supposed to be in ~/.newsrc?  How did
>  > you get such a group name there?
>
>       I didn’t.  The person who brought this issue to IRC has
>       apparently used something like (nnimap "imap.gmail.com") for
>       gnus-select-method.
>
>       Though indeed, I know of no reason /not/ to set
>       gnus-save-newsrc-file to nil in this case.

This was discussed on the gnus.general list, and I produced a fix for it
(at least, I'm 95% sure it's the same issue), and then apparently never
sent the patch to the list, despite having thought I did. Attaching the
patch here.

Eric

0001-Handle-unquoted-IMAP-group-names.patch
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