From: Eric Abrahamsen <eric@ericabrahamsen.net>
To: help-gnu-emacs@gnu.org
Subject: Re: Understanding Word and Sentence Boundaries
Date: Tue, 11 Dec 2012 20:03:55 +0800 [thread overview]
Message-ID: <878v94n6c4.fsf@ericabrahamsen.net> (raw)
In-Reply-To: 50C716A3.7070302@mousecar.com
ken <gebser@mousecar.com> writes:
> On 06/26/2010 11:05 PM Deniz Dogan wrote:
>> 2010/6/27 ken<gebser@mousecar.com>:
>>>
>>> On 06/26/2010 06:53 AM Paul Drummond wrote:
>>>> Thanks for the responses guys.
>>>>
>>>> I think the point I am trying to make here is that it's a *big* task to
>>>> fix word boundaries for every case (every word-related key binding
>>>> multiplied by each language/major mode I use!).
>>>>
>>>> I presume that Emacs hackers either a) put up with it or b) spend a lot
>>>> of time fixing each case until they are happy.
>>>>
>>>> I suspect the answer is b. ;-)
>>>>
>>>> I wish there was a single minor-mode that fixes all the word boundary
>>>> issues for every major-mode I use! I can but dream. Or maybe I will
>>>> get round to doing it myself one day! ;)
>>>>
>>>> Cheers,
>>>> Paul Drummond
>>>
>>>
>>> Is it possible to specify word boundaries for a particular mode?
>>>
>>
>> Yes, it's part of the syntax table. See e.g. `modify-syntax-entry'.
>
> Thanks for the pointer to that function.
>
> The behavior I see in need of repair is the role of so-called "comments"
> in sentence syntax.</tag> For instance, immediately before this
> sentence are two spaces... which should signify the end of the
> previous sentence. But functions like "forward-sentence" and
> "fill-paragraph" and "backward-sentence" don't recognize it.
>
> Said another way, the "</tag>" string obscures the relationship
> between the period before it and the two spaces after it and so fails
> to see that one sentence ends and another starts. This occurs in
> text-mode and seems to be inherited by other modes.
>
> If I'm reading "modify-syntax-entry" correctly, the default meanings
> of '<' and '>' are, respectively, beginning and end of comment, so
> modifying them wouldn't fix this problem. Or can this be remedied by
> a change in the syntax table? Or is this a bug?
For this particular case, I think you can modify the value of the
`sentence-end' variable (which is returned by the `sentence-end'
function? The whole thing is a little confusing). You'd probably be best
off starting with the docstring for the sentence-end function, and
working back from there.
I think the `sentence-end' variable is automatically buffer-local, which
means if you change it in a mode-hook it ought to work the way you want.
I agree that the whole syntax thing feels like a very well-polished
hack.
E
next prev parent reply other threads:[~2012-12-11 12:03 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-16 10:44 Understanding Word Boundaries Paul Drummond
2010-06-16 20:07 ` Karan Bathla
2010-06-17 13:37 ` Deniz Dogan
2010-06-23 9:02 ` Gary
2010-06-26 10:46 ` Paul Drummond
2010-06-26 10:53 ` Paul Drummond
2010-06-26 11:22 ` Thien-Thi Nguyen
2010-06-26 23:49 ` ken
2010-06-27 3:05 ` Deniz Dogan
2012-12-11 11:18 ` Understanding Word and Sentence Boundaries ken
2012-12-11 12:03 ` Eric Abrahamsen [this message]
2012-12-11 15:17 ` ken
2012-12-12 7:02 ` Eric Abrahamsen
2012-12-12 14:32 ` Finding end of sentence[ was Re: Understanding ... Sentence Boundaries] ken
2012-12-13 4:27 ` Eric Abrahamsen
2012-12-13 5:59 ` Eric Abrahamsen
[not found] ` <mailman.7.1277607983.30403.help-gnu-emacs@gnu.org>
2010-06-27 15:02 ` Understanding Word Boundaries Xah Lee
2012-12-11 2:11 ` Samuel Wales
[not found] ` <mailman.2.1277549613.3306.help-gnu-emacs@gnu.org>
2010-06-27 14:58 ` Xah Lee
2010-06-25 10:33 ` andreas.roehler
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