use strict;
my $str = '<p>by <a rel="author" href="/users/Ellixerff/pseuds/Ellixerff">Ellixerff</a></p>
<p>It\'s happened before, but this time is different. Can the consequences of bringing the one you love back, cost you ev fin story.</p>
<p>Words: 8003, Chapters: 7/7, Language: English</p>
<ul>
<li>Fandoms: <a full_pat class="tag" href="https://archiveofourown.org/tags/Xena:%20Warrior%20Princess/works">Xeni Princess</a></li>
<li>Rating: <a full_path="true" class="tag" href="https://archiveofourown.org/tags/Mature/works">Mature</a></li>
<li>Warnings: <a full_f class="tag" href="https://archiveofourown.org/tags/Choose"> Chose Not To Use Archive Warnings</a></li>
<li>Categories: <a full_path="true" class="tag" href="https://archiveofourown.org/tags/F*s*F/works">F/F</a></li>
<li>Characters: <a full_path="true" href="https://archiveofourown.org/tags/Gabrielle%20(Xena)/works">Gabrielle (Xena)</a></li>
<li><a fi class="tag" href="https://archiveofourown.org/tags/Xena%20(Xena)/works">Xena (Xena)</a></li>
<li>Relationships: <a full_path="true" class="tag" href="https://archiveofourown.org/tags/Gabrielle*s*Xena/works">Gabrielle/Xena</a></li>
</ul>
';
my $regex = qr/\<li\>[^<]*?(Fandoms).*?\<\/li\>/sp;
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