I see, [.] is not very "pure" but sometimes we get lost when we use a lot of \ and / so it can be useful to cheat a bit
May be you could help me with my other post, that don't seem to passionate peole lol
It's a post still about regex.
You can find it here :
Change case in a regular expression
Anyway, thank you very much for the explanations, it is always better that getting the solution too fast