How to match once per file in grep?

Question

Is there any grep option that let\'s me control total number of matches but stops at first match on each file?

Example:

If I do this grep -ri --include \'*

Answer 1

find . -name \*.coffee -exec grep -m1 -i 're' {} \;

find's -exec option runs the command once for each matched file (unless you use + instead of \;, which makes it act like xargs).