From: Richard Riley <rileyrg@gmail.com>
To: help-gnu-emacs@gnu.org
Subject: Re: System operating detection
Date: Wed, 11 Aug 2010 11:22:32 +0200 [thread overview]
Message-ID: <i3tq4p$2k9$1@dough.gmane.org> (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:
>
>
>
>
> --8<---------------cut here---------------start------------->8---
> (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))
> --8<---------------cut here---------------end--------------->8---
>
>
>
> 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...
I think you need to show your usage patterns for the variables you have
defined for a better answer. How are you using the results?
That said, maybe just define sysop and then load-library a filename stub
concat'ed with the sysop along the lines of
(load-library (concat "os-specific-" sysop))
is a better approach? And then os-specific-win etc all contain their OS
specific details.
next prev parent reply other threads:[~2010-08-11 9:22 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 [this message]
2010-08-11 10:19 ` Andrea Crotti
2010-08-11 11:58 ` Thierry Volpiatto
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
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