From: Dirk-Jan C. Binnema <djcb.bulk@gmail.com>
To: Harry Putnam <reader@newsguy.com>
Cc: help-gnu-emacs@gnu.org
Subject: Re: test for presence of library
Date: Sat, 20 Feb 2010 01:12:41 +0200 [thread overview]
Message-ID: <87aav4vmza.wl%djcb@djcbsoftware.nl> (raw)
In-Reply-To: <873a0wq35z.fsf@newsguy.com>
>>>>> "HP" == Harry Putnam <reader@newsguy.com> writes:
HP> But looking at the suggested documentation I'm left non the wiser:
HP> (require FEATURE &optional FILENAME NOERROR)
HP> That isn't going to get it for me.. I've tried a few arrangements but
HP> being an idiot and all, I have no idea how something optional is
HP> introduced into the require.
(when (require 'foo nil 'noerror)
;; do something with foo
)
is a common pattern to deal with such things.
Best wishes,
Dirk.
--
Dirk-Jan C. Binnema Helsinki, Finland
e:djcb@djcbsoftware.nl w:www.djcbsoftware.nl
pgp: D09C E664 897D 7D39 5047 A178 E96A C7A1 017D DA3C
next prev parent reply other threads:[~2010-02-19 23:12 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <mailman.1463.1266533787.14305.help-gnu-emacs@gnu.org>
2010-02-19 1:09 ` test for presence of library Pascal J. Bourguignon
2010-02-19 22:19 ` Harry Putnam
2010-02-19 23:12 ` Dirk-Jan C. Binnema [this message]
[not found] ` <mailman.1516.1266618008.14305.help-gnu-emacs@gnu.org>
2010-02-20 1:09 ` Tim X
2010-02-20 9:54 ` Pascal J. Bourguignon
[not found] ` <slrnho35vq.493.oudeis@nephthys.thalatta.eme>
2010-02-22 1:58 ` Pascal J. Bourguignon
2010-02-25 18:59 ` Harry Putnam
[not found] ` <mailman.1877.1267124412.14305.help-gnu-emacs@gnu.org>
2010-02-25 20:17 ` Pascal J. Bourguignon
2010-02-26 20:21 ` Harry Putnam
2010-02-18 22:56 Harry Putnam
2010-02-18 23:10 ` Lennart Borgman
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