Regex match outer nested tags

Question

I have this string

blabla [IC=\"test\"]Hello, [IC=\"testing\"] this is a nested tag [EC], cya.[EC] blabla

I\'m trying to match the outer [

Answer 1

The regular expression below should do the trick:

[^\[]*(\[.*\])[^\]]*

You can try a working demo visiting this link.

Alternatively, if you don't want to rely on capturing groups, this should be enough:

(\[.*\])

A working demo of the regular expression above can be tested here.