From: Marcin Borkowski <mbork@mbork.pl>
To: Rolf Ade <rolf@pointsman.de>
Cc: help-gnu-emacs@gnu.org
Subject: Re: How to test if the current line contains only white-spache?
Date: Thu, 19 Nov 2015 16:20:34 +0100 [thread overview]
Message-ID: <87bnaqvwvx.fsf@mbork.pl> (raw)
In-Reply-To: <877fle6qnc.fsf@linux-qg7d.fritz.box>
On 2015-11-19, at 14:54, Rolf Ade <rolf@pointsman.de> wrote:
> Yes, this is, what my instinct also telling me. But this instinct was
> trained by other programming languages and environments. I'm aware, that
> it may be not applicable to emacs lisp / emacs.
And you're right: it's not.
> Discussing programming concepts at such 'meta level' is difficult. But
> maybe some may express their thinking about this. Is this 'moving point
> around' in emacs lisp programming code the "right thing" to do [...]
Yes it is.
See e.g. answers to this question:
http://emacs.stackexchange.com/questions/2120/how-to-insert-text-after-point
(not the same case, but similar) or many definitions in Emacs core.
You can e.g. grep for `save-excursion' in simple.el and other places.
A few highlights: check the definitions of `line-number-at-pos',
`kill-line', `insert-buffer', `next-line', `mark-word' and many others.
It turns out that e.g. this is quite a common idiom:
(save-excursion
(move-point-someplace-of-interest)
(point))
Best,
--
Marcin Borkowski
http://octd.wmi.amu.edu.pl/en/Marcin_Borkowski
Faculty of Mathematics and Computer Science
Adam Mickiewicz University
next prev parent reply other threads:[~2015-11-19 15:20 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-14 16:11 How to test if the current line contains only white-spache? Rolf Ade
2015-11-14 18:42 ` Barry Margolin
2015-11-15 13:29 ` Marcin Borkowski
2015-11-16 21:15 ` Philipp Stephani
2015-11-25 13:58 ` looking-at-p slower than looking-at Nicolas Richard
2015-11-25 20:34 ` Marcin Borkowski
2015-11-25 21:28 ` Michael Heerdegen
2015-11-25 21:32 ` Marcin Borkowski
2015-11-26 13:37 ` Nicolas Richard
2015-11-25 22:39 ` Emanuel Berg
2015-11-26 13:58 ` Nicolas Richard
[not found] ` <mailman.675.1448463102.31583.help-gnu-emacs@gnu.org>
2015-11-25 15:48 ` Barry Margolin
2015-11-25 20:39 ` Marcin Borkowski
2015-11-15 19:18 ` How to test if the current line contains only white-spache? Rolf Ade
2015-11-17 0:26 ` Emanuel Berg
2015-11-17 20:38 ` Marcin Borkowski
[not found] ` <mailman.23.1447720376.31583.help-gnu-emacs@gnu.org>
2015-11-19 1:56 ` Rolf Ade
2015-11-19 2:05 ` Stefan Monnier
2015-11-19 2:18 ` Emanuel Berg
2015-11-19 2:23 ` Emanuel Berg
[not found] ` <mailman.202.1447899839.31583.help-gnu-emacs@gnu.org>
2015-11-19 13:54 ` Rolf Ade
2015-11-19 15:20 ` Marcin Borkowski [this message]
2015-11-19 23:58 ` Emanuel Berg
2015-11-20 6:14 ` Marcin Borkowski
2015-11-21 2:26 ` Emanuel Berg
[not found] ` <mailman.279.1447976946.31583.help-gnu-emacs@gnu.org>
2015-11-20 0:48 ` How to test if the current line contains only white-space? Rolf Ade
2015-11-21 2:02 ` Emanuel Berg
[not found] ` <mailman.375.1448070734.31583.help-gnu-emacs@gnu.org>
2015-11-21 2:28 ` Rolf Ade
2015-11-24 3:01 ` Emanuel Berg
2015-11-20 0:48 ` Rolf Ade
2015-11-26 17:51 ` How to test if the current line contains only white-spache? Alex Bennée
2015-11-26 23:59 ` predicates (was: Re: How to test if the current line contains only white-spache?) Emanuel Berg
[not found] ` <mailman.787.1448581762.31583.help-gnu-emacs@gnu.org>
2015-11-27 4:28 ` predicates Pascal J. Bourguignon
2015-11-27 19:52 ` predicates Emanuel Berg
2015-11-15 5:56 ` How to test if the current line contains only white-spache? Yuri Khan
2015-11-15 9:18 ` John Mastro
2015-11-25 14:04 ` Nicolas Richard
2015-11-25 20:36 ` Marcin Borkowski
2015-11-25 22:41 ` Emanuel Berg
[not found] ` <mailman.676.1448463105.31583.help-gnu-emacs@gnu.org>
2015-11-26 15:24 ` Rolf Ade
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