in reply to Regular expression question

#!/usr/bin/perl
# Using perl to remove svg tags from html
# Because someone asked for an example
# Not because this is advisable

use strict;
use warnings;

my $htm = do { local $/; <DATA> };

$htm =~ s,
  <svg   # begin svg tag
  [^>]*  # svg tag attributes
  >      # end svg tag
  .*?    # inside svg tag (BRITTLE!)
  </svg> # close svg tag
  ,,gsx; # replace with nothing g=global, s=single-line, x=extended

print $htm;

__DATA__
<!DOCTYPE html>
<html>
<body>
 
<svg width="100" height="100">
  <circle cx="50" cy="50" r="40" stroke="green" stroke-width="4" fill=
+"yellow" />
</svg>

</body>
</html>

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In Section Seekers of Perl Wisdom