I can confirm

[image: 54.png]


On Sun, Jul 16, 2023 at 11:40 AM Eli Zaretskii <eliz@gnu.org> wrote:

> > From: Ihor Radchenko <yantar92@posteo.net>
> > Cc: senkijun@gmail.com, ruijie@netyu.xyz, 64652@debbugs.gnu.org
> > Date: Sun, 16 Jul 2023 08:07:01 +0000
> >
> > Eli Zaretskii <eliz@gnu.org> writes:
> >
> > >> Org inherits outline-mode-syntax-table, which inherits
> > >> standard-syntax-table, AFAIU. Is there anything wrong with this
> > >> approach?
> > >
> > > I'm talking about case-table, not syntax-table.
> >
> > Org does nothing about case-table. So, it should be the default one.
>
> That's the problem: the default case-table in Turkish locales will
> fail case-insensitive search for ASCII strings.  Try this:
>
>   emacs -Q
>   M-x set-language-environment RET Turkish RET
>
> Then type "PROPERTIES" into *scratch*, go to its beginning, and type
> M-l.  You will see "propertıes".
>
> > > It sounds like Org searches for "PROPERTIES" with case-fold-search
> > > non-nil, and in Turkish locales that downcases PROPERTIES to
> > > propertıes (not the dotless ı letter instead of i), which then fails
> > > to find the string.  Something like that.
> >
> > Does it also mean that any user with Turkish locale will experience the
> > same failure when searching for "i"? Like M-x isearch <RET> i
>
> Yes (except that Isearch has some heuristics regarding letter-case
> when invoked interactively).  After set-language-environment to
> Turkish, type "PROPERTIES", go to the beginning of the word you typed,
> and do
>
>    M-: (search-forward "i") RET
>
> You will see that it fails.  Now reset language-environment to English
> and repeat the same search: it will now succeed.
>