Re: Modify hook in group parameters?

[Katsumi Yamaoka <yamaoka@jpl.org>]

>>>>> Steinar Bang wrote:
>>>>>> Katsumi Yamaoka <yamaoka@jpl.org>:

>> I don't know why it takes too much time though.

> The check in is from May 2003, and one of the machines I was running on,
> at that point in time, was the PII 233MHz machine with 128MB of RAM,
> that is the same machine that hosts the imap server (a 1996 vintage DEC
> PC 5000... still running... still hosting the imap server).

> Another Gnus machine was a 1997 vintage DEC HiNote Ultra II, with 48MB
> RAM.

> Anyway, the machines used may have had something to do with the speed
> issues. :-)

I see.  I recalled the machine I'd been using till the year before
last. :)

>> This will work:

>> (setq gnus-summary-prepare-exit-hook nil)
>> (add-to-list 'gnus-parameters
>> 	     '("\\`nnimap[+:]" (gnus-summary-prepare-exit-hook
>> 				'(gnus-summary-expire-articles t))))

> Hm... what does the backslash-quoted backquote at the start of the
> rexexp mean?  My existing gnus-parameters entries all start with a "^"
> (start of line).

Both "\\`" and "^" match the beginning of a string object (and
the beginning of contents in an Emacs buffer), while "^" also
matches the beginning of a line (i.e., the next position of the
newline character) in a string or a buffer.  Anyway you can use
either in that case.  I usually use "\\`" when the matching target
is a string (a newsgroup name in that case).
Cf. (info "(emacs)Regexp")

[...]

> So if I leave my current
>  (remove-hook 'gnus-summary-prepare-exit-hook 'gnus-summary-expire-articles)
> in place in your example, instead of setting it to nil, that should also
> work?

It should be ok.