Javascript regExp cyrillic pattern

Question

I know that this is a dumb question, but i spent two days googling without any result. What the regExp pattern should be to allow my user to type only cyrillic characters and spaces? Thanks in advance!

Answer 1

You cannot do this in Javascript because Javascript does not provide even the most basic Level 1 Unicode support in its regexes. You would have to switch languages to do this correctly.

You cannot use enumerated block ranges for this. That confuses blocks and scripts, which is deeply flawed. There are 150 code points that have the \p{Script=Cyrillic} property but which lack the \p{Block=Cyrillic} property. They are in different blocks. Watch:

$ unichars '\p{Script=Cyrillic}' '\P{Block=Cyrillic}' | wc -l
150

Furthermore, there are a couple of non-Cyrillic code points within the Cyrillic block.

The best you could do is to enumerate all 404 Cyrillic code points as a character class, which may prove prohibitively large.

$ unichars '\p{Script=Cyrillic}'  | wc -l
404

You can use the unichars scripts to list those all out if you really want to. You might also want to grab the uniprops script while you’re there.