On 1/30/21 5:52 PM, Joseph Brenner wrote:
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"｣)
Hi Joseph,
I am coming from Perl 5 and sed.
I simply use a single quote. These are from actual code:
$NewRev ~~ s/ '<' .* //;
( my $x = $NewRev ) ~~ s:global/ '.' //; # remove the dots
( my $y = $NewRev ) ~~ s:global/ '.' /_/; # replace the dots with
underscores
$ClickHere ~~ s| .*? 'a href="' ||;
$ClickHere ~~ s| '"' .* ||;
Same as Perl 5 and sed
-T
