This might be what you're after to escape (not negate) the characters- 

perl -MHTML::Entities -le 'print encode_entities(shift)' '"><'
&quot;&gt;&lt;

[download]

HTML::Entities is tunable so you can set it to only escape exactly what you want.

In reply to Re: REGEX negate XML tags by Your Mother
in thread REGEX negate XML tags by kcvenkat123

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