From: Emanuel Berg via Users list for the GNU Emacs text editor <help-gnu-emacs@gnu.org>
To: help-gnu-emacs@gnu.org
Subject: Re: wrong type error in local variables
Date: Fri, 03 Jul 2020 04:00:52 +0200 [thread overview]
Message-ID: <87zh8hnyqz.fsf@ebih.ebihd> (raw)
In-Reply-To: 7fa40d4a-f713-9771-a7ed-8cb83e24bf59@gmail.com
Douglas Lewan wrote:
>> Okay, but what exactly is the problem with it,
>> from Lisp?
>
> The problem is that it changes the buffer.
>
> If a (find-file) fails and you were depending on
> the change of the current buffer all kinds of other
> things might go wrong.
>
> If you use (find-file-noselect), then the current
> buffer doesn't change and any attempt to use that
> buffer would fail. In particular, you should be
> verifying that the (find-file-noselect) succeeded.
Gotcha, but then why not just have a single such
function that does the checking itself and aborts
further execution immediately after the initial,
failed attempt to find the file? Then 1 (onee)
function would be used, and with no need to
explicitely check if it succeeded?
--
underground experts united
http://user.it.uu.se/~embe8573
https://dataswamp.org/~incal
next prev parent reply other threads:[~2020-07-03 2:00 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-02 14:46 wrong type error in local variables Douglas Lewan
2020-07-02 15:06 ` Joost Kremers
2020-07-02 15:59 ` Douglas Lewan
2020-07-02 15:56 ` Stefan Monnier
2020-07-02 16:36 ` Emanuel Berg via Users list for the GNU Emacs text editor
2020-07-02 17:09 ` Douglas Lewan
2020-07-02 17:45 ` Emanuel Berg via Users list for the GNU Emacs text editor
2020-07-02 17:42 ` Stefan Monnier
2020-07-03 1:19 ` Emanuel Berg via Users list for the GNU Emacs text editor
2020-07-03 1:40 ` Douglas Lewan
2020-07-03 2:00 ` Emanuel Berg via Users list for the GNU Emacs text editor [this message]
2020-07-03 2:24 ` Douglas Lewan
2020-07-03 3:45 ` Emanuel Berg via Users list for the GNU Emacs text editor
2020-07-03 5:13 ` Douglas Lewan
2020-07-03 6:05 ` Emanuel Berg via Users list for the GNU Emacs text editor
2020-07-02 17:04 ` Douglas Lewan
2020-07-02 17:15 ` Douglas Lewan
-- strict thread matches above, loose matches on Subject: below --
2020-07-03 8:33 Anders Munch
2020-07-03 10:36 ` Emanuel Berg via Users list for the GNU Emacs text editor
2020-07-03 14:07 ` Douglas Lewan
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