utf8lwr() - handle accented upper case vowels about utf8.h

[sheredom]

Thanks for your comment!

So this is my primary issue with bringing functionality like this in - I really do want to support it, I'm just scared to add some of the additional lwr/upr variants without adding them all!

You've identified the correct place in the code for where this needs to go - I'll go explore the utf8 codepoints and see if there is an easy way to do this transformation and get back to you.

[giampaolo]

Thanks for your fast reply. I understand your concern. FWIW I think utf8proc is a lib which is supposed to cover most cases.

[r-lyeh]

Don't simplify this. It is a major issue.

Spanish will need ÁÉÍÓÚ and ÑÜ, romanian adds ĂÂÎȘȚ, hungarian adds ÖŐŰ, polish adds ĄĆĘŁŃŚŹŻ and so on (...) And yet they are all still latin languages.

[sheredom]

Right - I can mostly follow the latin list here https://en.wikipedia.org/wiki/List_of_Unicode_characters#Latin_script to get at least the latin based languages working.

[sheredom]

I've given this a first bash in #46 - it was more work than I expected to add the latin case support to all the utf8case functions!

Please check out the PR.

[giampaolo]

Sweet, I will check this tomorrow. Thanks a lot for working on this, I think it's a valuable improvement.

[sheredom]

I've added the greek letters you requested in #47 - can you check it out?

[sheredom]

@giampaolo stated that #47 handled his requirement (#47 (comment)) so I'm closing this issue!

If you have any requests in future please get in touch though!

[giampaolo]

I'm trying other languages by using (python) unit tests in which I copy articles from wikipedia.
Amongst others, Armenian, Bulgarian and Baskir languages have some issues.