From: David Kastrup <dak@gnu.org>
Subject: Re: newbie : elisp - prompt for input
Date: Mon, 28 Aug 2006 23:24:54 +0200 [thread overview]
Message-ID: <85hczwtuxl.fsf@lola.goethe.zz> (raw)
In-Reply-To: mailman.5849.1156799345.9609.help-gnu-emacs@gnu.org
Kevin Rodgers <ihs_4664@yahoo.com> writes:
> Hadron Quark wrote:
>> Is the snippet below the best way to prompt and parse an integer value?
>>
>>
>> (defun count-words(max)
>> "count words in buffer"
>> (interactive "nMax words to count to:")
>> (while (zerop max)
>> (setq max (string-to-number(read-string "> 0 please. re-enter:"))))
>
> The only thing I see wrong with it is that the check runs outside
> of the interactive form, and prompts the user (regardless of whether
> the function was called interactively).
It will also permit entering negative numbers.
--
David Kastrup, Kriemhildstr. 15, 44793 Bochum
next prev parent reply other threads:[~2006-08-28 21:24 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-08-28 19:17 newbie : elisp - prompt for input Hadron Quark
2006-08-28 21:07 ` Kevin Rodgers
[not found] ` <mailman.5849.1156799345.9609.help-gnu-emacs@gnu.org>
2006-08-28 21:15 ` Hadron Quark
2006-08-29 19:51 ` Kevin Rodgers
2006-08-28 21:24 ` David Kastrup [this message]
2006-08-29 19:53 ` Kevin Rodgers
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
List information: https://www.gnu.org/software/emacs/
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=85hczwtuxl.fsf@lola.goethe.zz \
--to=dak@gnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).