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I have php files well any file type in general that I would like vim to highlight here docs sections using a different syntax highlighting.

echo <<<HTMLDOC
<h1> I am highlighted as html </h1>

echo 'High Lighted as PHP again '
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up vote 1 down vote accepted

You can tweak the colors of course but try this:

:highlight MyHereDoc ctermbg=green guibg=green
:match MyHereDoc /<<<\([A-Za-z]*\)\_.*\1/

Also, if you plan on it being something more perminant in your vimrc add:

highlight MyHereDoc ctermbg=green guibg=green
matchadd("MyHereDoc", '<<<\([A-Za-z]*\)\_.*\1')
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TY I will try it as soon as I get the chance. – Prospero Oct 6 '11 at 16:47

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