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Date: Thu, 8 Feb 2024 17:03:32 +0900
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To: php internals <internals@lists.php.net>
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Subject: Re: [PHP-DEV][VOTE][RFC] mb_ucfirst and mb_lcfirst functions
From: youkidearitai@gmail.com (youkidearitai)

2024=E5=B9=B42=E6=9C=887=E6=97=A5(=E6=B0=B4) 12:56 Tim Starling <tstarling@=
wikimedia.org>:
>
> On 7/2/24 13:43, Ayesh Karunaratne wrote:
> >
> > Hi Tim,
> > Now that the RFC is restarted, could you mention some examples in
> > Georgian that might be good test cases?
> >
> > I was thinking there might be some good test cases in Turkish, but
> > couldn't find any. The RFC has examples
> > (https://github.com/php/php-src/pull/13161) in Vietnamese, but they
> > are correct for both "uppercase first character" and titlecase
> > conversions.
>
> Any Georgian word would do. Your ASCII test case is "abc". The
> Georgian equivalent for that would be "=E1=83=90=E1=83=91=E1=83=92" (ani =
bani gani, U+10D0
> U+10D1 U+10D2) which should remain the same after passing through
> mb_ucfirst(). Compare mb_strtoupper("=E1=83=90=E1=83=91=E1=83=92") -> "=
=E1=B2=90=E1=B2=91=E1=B2=92" (U+1C90 U+1C91
> U+1C92).
>
> On the task I mentioned that ligatures are also affected. I gave the
> example mb_ucfirst("=C7=89") -> "=C7=88", that is, U+01C9 -> U+01C8. You =
could
> add a test case for that. Compare mb_strtoupper("=C7=89") -> "=C7=87" (U+=
01C7).
>
> To repeat my rationale -- we can view ucfirst() either through a
> technical lens (convert the first character of a string to upper case)
> or through a natural language lens (convert a string to sentence case,
> with the initial letter capitalised per local conventions). I am
> arguing to make mb_ucfirst() be a natural language extension of
> ucfirst(), because applying the technical extension would produce
> results that look quite jarring in a natural language context.
>
> There are some edge cases which are not quite right. To really do a
> good job, a new case map will be needed. But if we document it as
> being for natural language, and set the right expectations, we can fix
> the edge cases later.
>
> -- Tim Starling
>

Hi, Tim
Thank you for Georgian test case.
I added to test case.

If other any comments, please feel free.

Regards
Yuya

--=20
---------------------------
Yuya Hamada (tekimen)
- https://tekitoh-memdhoi.info
- https://github.com/youkidearitai
-----------------------------