From: Drew Adams <drew.adams@oracle.com>
To: 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: Tue, 24 Sep 2019 11:23:06 -0700 (PDT) [thread overview]
Message-ID: <326973dd-0844-40e1-ad2e-55b3a7ea35bf@default> (raw)
`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.
E.g.
emacs -Q
(setq fill-column nil)
C-h f forward-char ; raises error
That happens because `describe-function-1` calls
`fill-region-as-paragraph`, which ultimately calls
`fill-match-adaptive-prefix`, which barfs when it tries to add the
result of `current-fill-column` (nil) to integers.
This is a regression from older releases.
In GNU Emacs 26.3 (build 1, x86_64-w64-mingw32)
of 2019-08-29
Repository revision: 96dd0196c28bc36779584e47fffcca433c9309cd
Windowing system distributor `Microsoft Corp.', version 10.0.17763
Configured using:
`configure --without-dbus --host=x86_64-w64-mingw32
--without-compress-install 'CFLAGS=-O2 -static -g3''
next reply other threads:[~2019-09-24 18:23 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-24 18:23 Drew Adams [this message]
2019-09-24 18:30 ` bug#37507: 26.3; Non-number value for `fill-column' causes wrong-type-arg error for `C-h f' 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
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