From: Stefan Monnier <monnier@iro.umontreal.ca>
Subject: Re: how do I know that the buffer is narrowed
Date: Sun, 04 Dec 2005 09:54:10 -0500 [thread overview]
Message-ID: <871x0sgbnq.fsf-monnier+gnu.emacs.help@gnu.org> (raw)
In-Reply-To: mailman.17838.1133698823.20277.help-gnu-emacs@gnu.org
>> Yes, there is a very good one: you unnecessarily assume that the buffer
>> starts at position 1.
> Both `what-cursor-position' and `what-line' (in simple.el) do this
> assumption. After looking in buffer.h and seeing:
> /* Position of beginning of buffer. */
> #define BEG (1)
> I don't see any reason NOT to assume this.
I didn't say it was a bad assumption. Just an unneeded one.
Code with fewer assumptions is generally better than a code with
more assumptions. Especially when it's shorter and more efficient,
of course.
Stefan "whose Emacs uses #define BEG (12345678)"
next prev parent reply other threads:[~2005-12-04 14:54 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <mailman.17354.1133368063.20277.help-gnu-emacs@gnu.org>
2005-11-30 22:10 ` how do I know that the buffer is narrowed Pascal Bourguignon
2005-11-30 22:41 ` Johan Bockgård
2005-11-30 23:10 ` David Kastrup
2005-12-01 11:31 ` Giorgos Keramidas
2005-12-01 12:12 ` David Kastrup
2005-12-01 12:44 ` Giorgos Keramidas
2005-12-01 16:52 ` Stefan Monnier
2005-12-01 18:41 ` Giorgos Keramidas
2005-12-04 12:13 ` Ehud Karni
[not found] ` <mailman.17838.1133698823.20277.help-gnu-emacs@gnu.org>
2005-12-04 14:54 ` Stefan Monnier [this message]
2005-11-30 16:27 mak kwak
2005-11-30 19:54 ` Kevin Rodgers
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