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To: Paul Crovella <paul.crovella@gmail.com>
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Date: Fri, 26 Nov 2021 09:26:07 +1100
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Subject: Re: [PHP-DEV] [VOTE] Locale-independent case conversion
From: tstarling@wikimedia.org (Tim Starling)

On 25/11/21 11:34 pm, Paul Crovella wrote:
> On Thu, Nov 25, 2021 at 3:14 AM Tim Starling <tstarling@wikimedia.org> wrote:
>> On 25/11/21 7:57 pm, Côme Chilliet wrote:
>>
>>> To reuse the example from the RFC, if I want to convert a UTF string to uppercase using Turkish rules and get dotted capital I, what should I use?
>> For case-insensitive comparison you can use Collator. But for display
>> you just have to do it yourself. For the Turkish Wikipedia and other
>> Turkic language websites we are currently using str_replace().
> Any particular reason not to use transliterators? https://3v4l.org/I038T

Thanks, I missed that.

You would need to do your own mapping from language code to
transliterator name, since it only has converters for az/tr, el, lt
and "Any", with no fallbacks. For example if you did
Transliterator::create("en-Upper")->transliterate('a') you would get a
fatal error.

Presumably if I submitted a PR adding wrappers for u_strToUpper()
etc., it would not be rejected on the basis that we already have
transliterators.

-- Tim Starling