GNU bug report logs - #13480
24.3.50; `C-w' from Isearch should translate newlines to spaces

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From: Juri Linkov <juri <at> jurta.org>
To: Stefan Monnier <monnier <at> iro.umontreal.ca>
Cc: 13480 <at> debbugs.gnu.org, Drew Adams <drew.adams <at> oracle.com>, 'Dani Moncayo' <dmoncayo <at> gmail.com>
Subject: bug#13480: 24.3.50; `C-w' from Isearch should translate newlines to spaces
Date: Sun, 20 Jan 2013 01:30:07 +0200

>>> So we could use `isearch-message' to display the translated
>>> search string but not to translate it in `isearch-string'.
>> Yes, +1.
>
> IIRC there's the same problem with case-sensitivity.

Not downcasing the yanked string could help to fix bug#10118.

According to the docstring of `search-upper-case',
if its value is `not-yanks', text yanked into the
search string is always downcased.

So maybe a better default value for `search-upper-case'
would be `nil' instead of the current default `not-yanks'.

If a tri-state option with three values t/nil/not-yanks
is a good customization UI then perhaps `isearch-lax-whitespace'
should provide the option `not-yanks' too, specifying whether
newlines should be translated to a single space in text yanked
into the search string.

If the value `not-yanks' is a bad UI then search functions should
take care about translating the characters in the search string internally
depending on a new set of options specifying how search functions should
use the right case and whitespace.

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