From: Harald Hanche-Olsen <hanche@math.ntnu.no>
Subject: Re: What's wrong with this lisp code in my init file?!
Date: Sun, 31 Dec 2006 23:16:44 +0100 [thread overview]
Message-ID: <pcolkknyalv.fsf@shuttle.math.ntnu.no> (raw)
In-Reply-To: mailman.2595.1167601997.2155.help-gnu-emacs@gnu.org
+ Eric Hanchrow <offby1@blarg.net>:
| But there's an even more general way to do more than one thing inside
| an "if": the "progn" form. It simply does a bunch of things one after
| the other:
And of course, there is cond:
(cond
((eq window-system 'w32)
(setq ps-printer-name t)
(setq ps-lpr-command "c:/Program Files/Ghostgum/gsview/gsprint.exe"))
((eq window-system nil)
(setq ps-printer-name t)
(setq ps-lpr-command "/cygdrive/c/Program Files/Ghostgum/gsview/gsprint.exe")))
And then there are when and unless in the cl package:
(require 'cl)
(when (eq window-system 'w32)
(setq ps-printer-name t)
(setq ps-lpr-command "c:/Program Files/Ghostgum/gsview/gsprint.exe"))
(unless window-system
(setq ps-printer-name t)
(setq ps-lpr-command "/cygdrive/c/Program Files/Ghostgum/gsview/gsprint.exe"))
--
* Harald Hanche-Olsen <URL:http://www.math.ntnu.no/~hanche/>
- It is undesirable to believe a proposition
when there is no ground whatsoever for supposing it is true.
-- Bertrand Russell
next prev parent reply other threads:[~2006-12-31 22:16 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-12-31 16:15 What's wrong with this lisp code in my init file?! Endless Story
2006-12-31 18:48 ` Eric Hanchrow
[not found] ` <mailman.2592.1167591202.2155.help-gnu-emacs@gnu.org>
2006-12-31 19:57 ` Endless Story
2006-12-31 21:51 ` Eric Hanchrow
2006-12-31 22:29 ` Drew Adams
[not found] ` <mailman.2595.1167601997.2155.help-gnu-emacs@gnu.org>
2006-12-31 22:16 ` Harald Hanche-Olsen [this message]
2006-12-31 22:50 ` Drew Adams
[not found] ` <mailman.2599.1167605423.2155.help-gnu-emacs@gnu.org>
2007-01-01 1:48 ` Endless Story
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