Use variable as RegEx pattern

Question

I\'d like to use a variable as a RegEx pattern for matching filenames:

my $file = \"test~\";
my $regex1 = \'^.+\\Q~\\E$\';
my $regex2 = \'^.+\\\\Q~\\\\E$\';
prin         


        

Answer 1

You cannot use \Q in a single-quoted / non-interpolated string. It must be seen by the lexer.

Anyway, tilde isn’t a meta-character.

Add use regex "debug" and you will see what is actually happening.