I think ToddAndMargo was thinking of perl5 regexes, where [.] is
a good way of matching a literal dot-- though myself, I'm more
inclined to use \.
In Raku, the square brackets just do non-capturing grouping
much like (?: ... } in perl5. To do a character class, you need
angles around the squares. This would work to match a single dot:
<[.]>
In Raku regexes a \. would also work to match a literal dot.
Until I saw JJ Merelo's post, I don't think I realized that
you could quote a meta-character using quotes: "."
Which means there's some potential confusion if you really need
to match quotes:
my $str = 'string_632="The chicken says--", voice="high"';
say
$str ~~ m:g{ ( " .*? " ) }; # False
say
$str ~~ m:g{ ( \" .*? \" ) }; # let's feed another quote: " to
an emacs syntax highlighting bug
# ｢"The chicken says--"｣
# 0 => ｢"The chicken says--"｣ ｢"high"｣
# 0 => ｢"high"｣)
