I'm trying to write a quick regex to (imperfectly) entity encode some HTML. I can't seem to figure out how to express "if a defined symbol is not inside of < > then match." He is the code I have now: 
my $html = "<b>foo & bar</b>";
my %Map = ( '&' => '&amp;', '"' => '&quot;', '<' => '&lt;',
 '>' => '&gt;', "'" => '&#39;' );
my $RE = join '|', keys %Map;

# This of course encodes everything.
#$html=~s!($RE)!$Map{$1}!g; 

# Returns <b&gt;foo &amp; bar&lt;/b&gt;
$html=~s/(?:(?!<\w[^>]*)($RE))/$Map{$1}/g; 

print $html;

[download]
Any wisdom to how to make this work? Thanks.

In reply to A quick regex to (imperfectly) entity encode some HTML? by Anonymous Monk

Title:
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