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bug#22147: Obsolete search-forward-lax-whitespace
From: |
Juri Linkov |
Subject: |
bug#22147: Obsolete search-forward-lax-whitespace |
Date: |
Mon, 14 Dec 2015 02:23:34 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/25.1.50 (x86_64-pc-linux-gnu) |
>> Thanks, setting search-default-regexp-mode to #'search-whitespace-regexp
>> gives the same effect.
>>
>> One drawback is that then it removes char-fold search.
>
> True. I think it might also be possible to get what you want by just
> setting the search-whitespace-regexp variable to "[ \t\r\n]+". That would
> have the advantage of not removing char folding (and would reduce
> everything to one line).
This still doesn't allow ^J in the search string to match a newline.
I often paste multi-line texts into the search string and need to
ignore differences in newlines usually caused by text re-filling.
What the mentioned regexp function does is replacing all whitespace
in the search string with the regexp that matches whitespace (also
it's possible to replace whitespace with a space character and then
use search-spaces-regexp to match this space character using the regexp
in search-whitespace-regexp).
By analogy with char-folding, this means symmetric whitespace folding.
When char-fold-symmetric causes all members of a folding equivalence
class to be treated equivalently, lax-whitespace-symmetric could
treat only whitespace character equivalently.
>> Do you have a plan to combine lax-whitespace search with char-fold search?
>
> Char-folding is perfectly compatible with the regular lax-whitespace.
Could char-folding already do the described above (maybe simpler
would be to normalize the search string by turning all whitespace
into space characters), or better first implement char-fold-symmetric
and then use it for whitespace characters?
- bug#22147: Obsolete search-forward-lax-whitespace, Juri Linkov, 2015/12/11
- bug#22147: Obsolete search-forward-lax-whitespace, Artur Malabarba, 2015/12/11
- bug#22147: Obsolete search-forward-lax-whitespace, Juri Linkov, 2015/12/12
- bug#22147: Obsolete search-forward-lax-whitespace, Artur Malabarba, 2015/12/12
- bug#22147: Obsolete search-forward-lax-whitespace,
Juri Linkov <=
- bug#22147: Obsolete search-forward-lax-whitespace, Artur Malabarba, 2015/12/13
- bug#22147: Obsolete search-forward-lax-whitespace, Juri Linkov, 2015/12/14
- bug#22147: Obsolete search-forward-lax-whitespace, Artur Malabarba, 2015/12/15
- bug#22147: Obsolete search-forward-lax-whitespace, Juri Linkov, 2015/12/15
- bug#22147: Obsolete search-forward-lax-whitespace, Drew Adams, 2015/12/15
- bug#22147: Obsolete search-forward-lax-whitespace, Artur Malabarba, 2015/12/16
- bug#22147: Obsolete search-forward-lax-whitespace, Juri Linkov, 2015/12/16
- bug#22147: Obsolete search-forward-lax-whitespace, Artur Malabarba, 2015/12/17
- bug#22147: Obsolete search-forward-lax-whitespace, Drew Adams, 2015/12/17
- bug#22147: Obsolete search-forward-lax-whitespace, Artur Malabarba, 2015/12/17