From: Juri Linkov <juri@jurta.org>
To: Chong Yidong <cyd@stupidchicken.com>
Cc: 'Lars Magne Ingebrigtsen' <larsi@gnus.org>, 9361@debbugs.gnu.org
Subject: bug#9361: 24.0.50; default value of `dired-do-chmod'
Date: Mon, 12 Sep 2011 14:49:23 +0300 [thread overview]
Message-ID: <87mxea55u8.fsf@mail.jurta.org> (raw)
In-Reply-To: <87bouqlptn.fsf@stupidchicken.com> (Chong Yidong's message of "Sun, 11 Sep 2011 17:41:24 -0400")
> I think there's a problem here, indeed. It's a bad idea to take an
> empty input to mean a certain default permission---especially when that
> default permission is not displayed in the prompt.
>
> The following patch makes dired-do-chmod demand a non-empty input. The
> precomputed permission is still available in the M-n `future history'.
There are other demands that dired commands should not use `read-string'
that returns the default value for an empty input. Please see
http://lists.gnu.org/archive/html/emacs-devel/2011-07/msg01200.html
So we should either change `read-string' (backward-incompatible change)
or to change `dired-mark-read-string' not to use `read-string'.
Another solution is to add a new global variable that changes the default
behavior of `read-string' and let-bind it in `dired-mark-read-string'.
> + (while (equal result "")
> + (setq result
> + (read-from-minibuffer prompt nil nil
> + nil nil default)))
I think it should tell the user what's wrong, like `read-number' does
with "Please enter a number."
Too bad that currently semantically similar functions
`read-string' and `read-number' differ significantly
WRT handling an empty input and default values.
next prev parent reply other threads:[~2011-09-12 11:49 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-24 16:10 bug#9361: 24.0.50; default value of `dired-do-chmod' Drew Adams
2011-08-24 18:45 ` Juri Linkov
2011-09-11 2:23 ` Lars Magne Ingebrigtsen
2011-09-11 15:00 ` Drew Adams
2011-09-11 21:41 ` Chong Yidong
2011-09-12 11:49 ` Juri Linkov [this message]
2011-09-12 20:47 ` Chong Yidong
2011-09-14 11:20 ` Juri Linkov
2011-09-14 15:07 ` Chong Yidong
2011-09-14 15:54 ` Juri Linkov
2011-09-12 11:39 ` Juri Linkov
2011-09-12 14:45 ` Drew Adams
2012-01-26 16:27 ` Drew Adams
2012-01-27 1:38 ` Juri Linkov
2012-01-27 3:04 ` Drew Adams
2012-01-27 7:24 ` Chong Yidong
2012-01-27 12:09 ` Juri Linkov
2012-01-27 16:58 ` Drew Adams
2012-01-27 15:42 ` Drew Adams
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