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grep options

From: Ken Goldman
Subject: grep options
Date: Fri, 14 Jan 2011 13:47:38 -0500
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.13) Gecko/20101208 Red Hat/3.1.7-3.el6_0 Thunderbird/3.1.7
When I use grep on C source, I'd like it to search all C source (.c, .h, .cpp), not just the files with the same extension.
I could do that with the (obsolete) igrep like this. Can I reproduce it with emacs 23 / grep? 

(put 'igrep-files-default 'c-mode
     (lambda () "*.[ch] *.cpp"))
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