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Sender: Mailing list for the LaTeX3 project <[log in to unmask]>
Date: Mon, 30 Jun 2014 19:28:18 +0100
Reply-To: Mailing list for the LaTeX3 project <[log in to unmask]>
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From: Joseph Wright <[log in to unmask]>
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On 30/06/2014 09:22, Joseph Wright wrote:
> To support case-changing operations in expl3, the team some time ago
> added an experimental pair
> \tl_expandable_uppercase:n/\tl_expandable_lowercase:n as alternatives to
> \tl_to_uppercase:n/\tl_to_lowercase:n. While the expandable operations
> are useful, there are issues both in terms of naming (solvable) and
> functionality (more complex). In particular, they cover only the ASCII
> range and do not offer some of the context-sensitive case changing that
> is required for languages other than English.
> 
> In order to address this, we have now added a new set of experimental
> functions to l3candidates:
> 
>  - \tl_upper_case:n(n)
>  - \tl_lower_case:n(n)
>  - \tl_mixed_case:n(n)

A question raised elsewhere
(http://chat.stackexchange.com/transcript/message/16351207#16351207) is
of course whether "tl" is the right place for such functions at all.
It's arguable that they can be regarded a "text" functions, so perhaps a
"text manipulation" module would be a better location. That does not of
course preclude discussing the detail of how they should also work, but
may be worth consideration. Feedback here also welcome!
--
Joseph Wright

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