_diffs">Git Diffs</h3>
<div class="dlist">
<dl>
<dt class="hdlist1"><code>GIT_DIFF_OPTS</code></dt>
<dd>
<p>Only valid setting is "--unified=??" or "-u??" to set the
number of context lines shown when a unified diff is created.
This takes precedence over any "-U" or "--unified" option
value passed on the Git diff command line.</p>
</dd>
<dt class="hdlist1"><code>GIT_EXTERNAL_DIFF</code></dt>
<dd>
<p>When the environment variable <code>GIT_EXTERNAL_DIFF</code> is set, the
program named by it is called, inste