aragraph">
<p>The definition of a diff driver is done in <code>gitconfig</code>, not
<code>gitattributes</code> file, so strictly speaking this manual page is a
wrong place to talk about it.  However&#8230;&#8203;</p>
</div>
<div class="paragraph">
<p>To define an external diff driver <code>jcdiff</code>, add a section to your
<code>$GIT_DIR/config</code> file (or <code>$HOME/.gitconfig</code> file) like this:</p>
</div>
<div class="listingblock">
<div class="content">
<pre>[diff "jcdiff"]
	comm