You probably want mmm-mode

Install and load the mmm-mode library, then use the mmm-ify-by-regexp command to turn it on for a buffer. Set to a hotkey or something if you want to be able to do it quickly after you load a file.

Eg, one I used for Parse::ePerl: 

(mmm-ify-by-regexp 'cperl-mode "<[\?]" 0 "[\?][\>]" 0 2)

[download]
$h=$ENV{HOME};my@q=split/\n\n/,`cat $h/.quotes`;$s="$h/."
."signature";$t=`cat $s`;print$t,"\n",$q[rand($#q)],"\n";

[download]

In reply to Re: [WT] Perl mode in mixed emacs buffer by mugwumpjism
in thread [WT] Perl mode in mixed emacs buffer by sfink

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