Let’s assume that I have a string like this:

blah.blah.blah.(hi.there).[la.la].la.ext

what I want is a Bash regex that captures only the first part of the string:

blah.blah.blah

The following regex captures that, but it includes the dot:

[[ "blah.blah.blah.(hi.there).[la.la].la.ext" =~ ([^[(]*) ]]

so I have:

'blah.blah.blah.' in ${BASH_REMATCH[1]}

Tried multiple ways to get rid of the dot, but with no luck. Is there a regex that gives me that string without the final dot?

The regex should work with square brackets too, like:

'blah.blah.blah.[hi.there].(la.la).la.ext'

Thanks in advance.