Meh, this will teach me about posting when I can't test. I meant q< \\\\" >; but thought the \ wouldn't escape the next one. The case where the \ just before the " is litteral because escaped, so it can't escape the ".

use v5.20;
use Data::Dump qw( pp );
my $str = <<STR;
 " .. \\\\" .. "
STR

print $str;

my %re = (LanX => qr/ " (?: \\\\ | \\" | [^"] )* " /x,
          Eily => qr/ " (?: [^\\] | \\. )* " /x);

$str =~ /$re{$_}/ and say "$_ found $&" for keys %re;

[download]
 " .. \\" .. "
Eily found " .. \\" .. "
LanX found " .. \\"

[download]

In reply to Re^6: Parser Performance Question (updated) by Eily
in thread Parser Performance Question by songmaster

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