Unusable letter on layer name As Selective option

[ini]

Hello.

I think quite recently, some letters are restricted from using on layer name, "<>:;"/|\?*"

I used ";" as a splitter, when make interaction with other programs,
after the recent update, I can not change to the name that is cantaining them, no more.

I can understand other letter as unusable letter because they are restricted from OS,
but ; is useful alternative one. so, actually I want to use it continuously.

and some of them is really so useful store the direct on the layer name.


I understand they can occure the ploblems, but for flexibility,

Is it possible to make restricted letter as a selective option?
or just show them 'alert' that those letter can cause some ploblems.


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OK, I find I can add them with george,
but still, I think It's restricting the tool's flexibility.