Replacing tango.text.Ascii.isearch

[rikki cattermole]

On 13/10/2022 9:42 PM, bauss wrote:
> Oh and to add onto this, IFF you have to do it the hacky way, then 
> converting to uppercase instead of lowercase should be preferred, 
> because not all lowercase characters can perform round trip, although a 
> small group of characters, then using uppercase fixes it, so that's a 
> relatively easy fix. A round trip is basically converting characters 
> from one culture to another and then back. It's impossible with some 
> characters when converting to lowercase, but should always be possible 
> when converting to uppercase.

You will want to repeat this process with normalize to NFKC and 
normalize to NFD before transforming. Otherwise there is a possibility 
that you will miss some transformations as the simplified mappings are 
1:1 for characters and not everything is representable as a single 
character.