Regexp: how to match everythings that is not into a pattern?

Question

I want to match everything in a string that does not match a given pattern; for example [a-z].

Given the string abc4jkf8 4à3in, I need to match 48 4à3.

I've tried with ([a-z])+(?![a-z]) but this matches exactly the opposite of what I need. With the string above, this regexp matches abcjkfin.

Any ideas?

Answer 1

You use a negative set:

([^a-z]+)