From: Stefan Kangas <stefan@marxist.se>
To: Eli Zaretskii <eliz@gnu.org>
Cc: Noam Postavsky <npostavs@gmail.com>, 37507@debbugs.gnu.org
Subject: bug#37507: 26.3; Non-number value for `fill-column' causes wrong-type-arg error for `C-h f'
Date: Sat, 19 Oct 2019 02:35:31 +0200 [thread overview]
Message-ID: <CADwFkm=4Hg1L1_6-D4FDdSaDV5fotjBf_rE9XQOP6zua-sNS7g@mail.gmail.com> (raw)
In-Reply-To: <326973dd-0844-40e1-ad2e-55b3a7ea35bf@default>
tags 37507 + notabug
close 37507
quit
Eli Zaretskii <eliz@gnu.org> writes:
>> From: Noam Postavsky <npostavs@gmail.com>
>> Date: Tue, 24 Sep 2019 15:53:15 -0400
>> Cc: 37507@debbugs.gnu.org
>>
>> Drew Adams <drew.adams@oracle.com> writes:
>>
>> > `fill-column' is supposed to have an integer value > 0.
>> >
>> > But if it has a non-numeric value then other functions can barf, unless
>> > they watch out for that.
>>
>> Shouldn't users just not set it to a non-numeric value then? I'm sure
>> you can cause all sort of errors by setting things to invalid values.
>>
>> > emacs -Q
>> >
>> > (setq fill-column nil)
>>
>> Do you mean setq-default (otherwise I can't reproduce)?
>
> I agree that this is a cockpit error. Users who are prone to such
> mistakes should use Customize to set values of variables. Users who
> use setq-default should know what they are doing.
>
> It is unreasonable to request that we have an explicit test for valid
> values in every place that references a variable. Our protection is
> that we signal an error, and that should IMO be good enough in cases
> such as this one.
>
> P.S. This bug report came from a question on Reddit, where it
> received the same responses.
I think the above makes it clear that this is not a bug. I'm
consequently closing this report.
Best regards,
Stefan Kangas
prev parent reply other threads:[~2019-10-19 0:35 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-24 18:23 bug#37507: 26.3; Non-number value for `fill-column' causes wrong-type-arg error for `C-h f' Drew Adams
2019-09-24 18:30 ` Drew Adams
2019-09-24 19:53 ` Noam Postavsky
2019-09-24 20:49 ` Drew Adams
2019-09-25 6:37 ` Eli Zaretskii
2019-10-19 0:35 ` Stefan Kangas [this message]
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