use strict;
my $str = 'test $ffsd\\$ggg\\\\\\\\\\\\\\\\$iU';
my $regex = qr/(?(DEFINE)
(?P<realEnd>
(?(3)\>)
(?(4)\))
(?(5)\])
(?(6)\})
(?(7)\7)
)
)
#Ограничитель 1
((\<)|(\()|(\[)|(\{)|
((?=[[:ascii:]])[^\s\w\\\)\]\}\>]))
#Шаблон
(
(?:
\\. | # что-то экранированое ИЛИ
[\w\d\s]++ | # литералы, которые не могут быть ограничителем ИЛИ
(?!(?P>realEnd)). # что угодно кроме ограничителя
)*+
)
#Ограничитель 2
(?P>realEnd)
#Модификаторы шаблонов
#PHP [mixXsuUAJ] JavaScript [gmi] python [gmixsu]
((?:[mixXsuUAJ]*)|(?(?=.*?[mixXsuUAJ]+)[mixXsuUAJ]+))/xsup;
if ( $str =~ /$regex/g ) {
print "Whole match is ${^MATCH} and its start/end positions can be obtained via \$-[0] and \$+[0]\n";
# print "Capture Group 1 is $1 and its start/end positions can be obtained via \$-[1] and \$+[1]\n";
# print "Capture Group 2 is $2 ... and so on\n";
}
# ${^POSTMATCH} and ${^PREMATCH} are also available with the use of '/p'
# Named capture groups can be called via $+{name}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Perl, please visit: http://perldoc.perl.org/perlre.html