From: Thierry Volpiatto <thierry.volpiatto@gmail.com>
To: help-gnu-emacs@gnu.org
Subject: Re: System operating detection
Date: Wed, 11 Aug 2010 13:58:48 +0200 [thread overview]
Message-ID: <87vd7hmkcn.fsf@tux.homenetwork> (raw)
In-Reply-To: m139ulbjsx.fsf@80-163.eduroam.rwth-aachen.de
Andrea Crotti <andrea.crotti.0@gmail.com> writes:
> Is there a way to make this ugly thing:
>
> (defconst sysop
> (cond
> ((string-match "linux" system-configuration) "linux")
> ((string-match "apple" system-configuration) "mac")
> ((string-match "win" system-configuration) "win")
> (t "other")))
>
> (defconst linux (string= "linux" sysop))
> (defconst mac (string= "mac" sysop))
> (defconst win (string= "win" sysop))
> (defconst other (string= "other" sysop))
>
> looking better?
> I would like to have all the constants defined (to nil or t) but
> avoiding this ugly repetition.
> One (small) problem is that without the "cond" also "darwin" matches
> "win", so I get a wrong constant...
Use case:
,----
| (case system-type
| (gnu/linux "Linux")
| (window-nt "windows")
| (darwin "mac")
| (t "other")
`----
>
>
--
Thierry Volpiatto
Get my Gnupg key:
gpg --keyserver pgp.mit.edu --recv-keys 59F29997
next prev parent reply other threads:[~2010-08-11 11:58 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-11 9:06 System operating detection Andrea Crotti
2010-08-11 9:22 ` Richard Riley
2010-08-11 10:19 ` Andrea Crotti
2010-08-11 11:58 ` Thierry Volpiatto [this message]
2010-08-11 12:58 ` Andrea Crotti
[not found] ` <mailman.1.1281531533.2853.help-gnu-emacs@gnu.org>
2010-08-11 14:27 ` Pascal J. Bourguignon
2010-08-16 21:53 ` Oleksandr Gavenko
[not found] <mailman.3.1281517588.2982.help-gnu-emacs@gnu.org>
2010-08-11 11:13 ` TheFlyingDutchman
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=87vd7hmkcn.fsf@tux.homenetwork \
--to=thierry.volpiatto@gmail.com \
--cc=help-gnu-emacs@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).