From: "Andreas Röhler" <andreas.roehler@easy-emacs.de>
To: help-gnu-emacs@gnu.org
Subject: Re: symbols verses words
Date: Thu, 03 Mar 2011 08:52:27 +0100 [thread overview]
Message-ID: <4D6F48BB.7010101@easy-emacs.de> (raw)
In-Reply-To: <06BF1211-A1CA-4E57-ADF4-8C89EF6ACDE1@gmail.com>
Am 03.03.2011 01:20, schrieb Perry Smith:
> I need some help understanding Emac's design. I use a lot of "word" constructs where I *think* I should be using symbol. For example, if I'm writing C code and I want to find foo but not foo_bar, I usually do \<foo\> but really it seems that I should be doing \_<foo\_> ... fine. I can make that adjustment. But when I do incremental search, I often hit ^w to pull in the next word but what I really want (often but not always) is to pull in the next symbol (into the search string). So if I'm sitting at this_that, I'd ilke to hit ^W (perhaps) and pull in this_that instead of just this.
>
> So, I started looking at isearch-yank-word-or-char and I was going to concoct isearch-yank-symbol-or-char and got stuck-- at least briefly. Because not only is _ marked as symbol, -, +, /, *, etc are marked as symbol characters too. So now, I'm confused...
>
> If I have: this this_that this-that
>
> and search for \_<this\_> I hit the first and third this -- which is exactly what I want.
Which should not happen IMHO, as
`\_>'
matches the empty string, but only at the end of a symbol
and your third this of this-that is not at the end.
BTW can't reproduce this with C-M-s, isearch-repeat-forward
it doesn't match this-that, as expected.
Looks like a bug, maybe try the last pre-release, which works fine here:
ftp://alpha.gnu.org/gnu/emacs/pretest/emacs-23.3-rc1.tar.gz
Andreas
--
https://code.launchpad.net/~a-roehler/python-mode/python-mode-components
https://code.launchpad.net/s-x-emacs-werkstatt/
But how is it doing that since this_that and this-that are the same as
far as looking at the syntax table entries? They are both wwww_wwww.
>
> I'd like to understand how the \_< and \_> constructs work so I can make my isearch-yank-symbol-or-char work in a consistent manner.
>
> Thanks,
> Perry
>
>
>
next prev parent reply other threads:[~2011-03-03 7:52 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-03 0:20 symbols verses words Perry Smith
2011-03-03 7:52 ` Andreas Röhler [this message]
2011-03-03 10:19 ` Tassilo Horn
2011-03-03 14:14 ` Perry Smith
2011-03-03 14:48 ` Tassilo Horn
2011-03-03 19:25 ` Perry Smith
[not found] ` <mailman.9.1299163745.10269.help-gnu-emacs@gnu.org>
2011-03-03 15:34 ` rusi
2011-03-04 9:06 ` Andreas Röhler
2011-03-03 14:26 ` MBR
2011-03-03 14:33 ` Perry Smith
[not found] <mailman.10.1299111607.15358.help-gnu-emacs@gnu.org>
2011-03-05 4:36 ` Stefan Monnier
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