or [*] or [a] or  or  or  or [666a] or [1a] ...
etc. I need to find.
The numbers, or numbers and characters, are always between the square
brackets. Numbers and characters, or a combination of them, are
variabel, the brackets are there always. And if the find-command
match, the square brackets must also be selected.
Till now I'm used: \[.] or \[..], etc, or: \[\d]
But I can not find a way to match the variables at once, if, for
example, there is one [5a] in a range of  -  I must find it
The helpfile about Regular Expressions was a bit to complicated for
me to fully understand.