From: martin rudalics <rudalics@gmx.at>
To: Eli Zaretskii <eliz@gnu.org>
Cc: monnier@iro.umontreal.ca, emacs-devel@gnu.org
Subject: Re: point-min and 1
Date: Wed, 12 Aug 2009 10:55:58 +0200 [thread overview]
Message-ID: <4A82839E.2010409@gmx.at> (raw)
In-Reply-To: <83tz0ejjm8.fsf@gnu.org>
>> > Can `(goto-char (point-min))' be different from `(goto-char 1)' after
>> > a call to `widen'?
>>
>> simple.el should not promote bad programming style ;-)
>
> What's bad about it?
The call to `widen' is of no importance here. As a matter of fact,
`(goto-char (point-min))' and `(goto-char 1)' are operationally
equivalent - they "always" move point to the same buffer position
regardless of whether the buffer was narrowed or not.
IMHO writing `(goto-char 1)' is bad style because it exhibits a low
level detail of Elisp implementation, namely that it sees buffer
positions as numbers counted from 1. I think Elisp code - and in
particular code in simple.el which might be used as some kind of
reference code for people starting to speak Elisp - should hide such
details wherever it can.
martin
next prev parent reply other threads:[~2009-08-12 8:55 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <E1Macea-0002f3-HQ@monty-python.gnu.org>
2009-08-11 3:07 ` point-min and 1 Eli Zaretskii
2009-08-11 9:18 ` martin rudalics
2009-08-11 18:22 ` Eli Zaretskii
2009-08-12 8:55 ` martin rudalics [this message]
2009-08-12 17:39 ` Eli Zaretskii
2009-08-12 23:03 ` Miles Bader
2009-08-13 0:13 ` Daniel Colascione
2009-08-13 9:52 ` martin rudalics
2009-08-13 16:49 ` Stefan Monnier
2009-08-13 18:08 ` martin rudalics
2009-08-13 21:28 ` Chong Yidong
2009-08-13 23:21 ` Juri Linkov
2009-08-14 7:16 ` martin rudalics
2009-08-14 9:30 ` David Kastrup
2009-08-14 9:50 ` martin rudalics
2009-08-14 9:55 ` Miles Bader
2009-08-14 1:29 ` Stefan Monnier
2009-08-14 7:15 ` martin rudalics
2009-08-14 8:44 ` David Kastrup
2009-08-14 9:50 ` martin rudalics
2009-08-11 15:13 ` Stefan Monnier
2009-08-11 18:32 ` Eli Zaretskii
2009-08-13 2:22 ` Stefan Monnier
2009-08-13 4:38 ` Eli Zaretskii
2009-08-13 9:53 ` martin rudalics
2009-08-13 12:38 ` David Kastrup
2009-08-13 14:40 ` martin rudalics
2009-08-13 16:48 ` Stefan Monnier
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