Yes, as said here:
I have used this in a PR to support auto lowercase in the pretty text discourse lib on non-english forums.
I need to extend that to make the site setting allow uppercase posts work as expected on non-english forums too, so I can take a look on the slug generation for you, if you don’t PR that before me 
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c# is a compiled language, it is 10x to 100x faster than Ruby. Please write back when you have tested in Ruby.
I strongly recommend switching to another discussion software if this is a hard requirement.
It’s not a hard requirement for my current forum. I was enquiring and wanted to share a helpful tip.
Thanks for the support.