How can I follow a link that contains 2 things using Mechanize in Perl?

Question

I want to follow a link that contains $foo AND $bar.

I've tried this and it didn't work.

$mech->follow_link( url_regex => qr/$foo/i && url_regex => qr/$bar/i)

Answer 1

You could write a regex that matches both subpatterns:

qr/(?=.*?$foo)(?=.*$bar)/is

This uses two lookaheads that can match anywhere in the string, due to the .* prefix.

Note that this is more inefficient, and that the matched substring will differ.