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<body class="manpage">
<div id="header">
<h1>
git-contacts(1) Manual Page
</h1>
<h2>NAME</h2>
<div class="sectionbody">
<p>git-contacts -
   List people who might be interested in a set of changes
</p>
</div>
</div>
<div id="content">
<div class="sect1">
<h2 id="_synopsis">SYNOPSIS</h2>
<div class="sectionbody">
<div class="verseblock">
<pre class="content"><em>git contacts</em> (&lt;patch&gt;|&lt;range&gt;|&lt;rev&gt;)&#8230;</pre>
<div class="attribution">
</div></div>
</div>
</div>
<div class="sect1">
<h2 id="_description">DESCRIPTION</h2>
<div class="sectionbody">
<div class="paragraph"><p>Given a set of changes, specified as patch files or revisions, determine people
who might be interested in those changes.  This is done by consulting the
history of each patch or revision hunk to find people mentioned by commits
which touched the lines of files under consideration.</p></div>
<div class="paragraph"><p>Input consists of one or more patch files or revision arguments.  A revision
argument can be a range or a single <code>&lt;rev&gt;</code> which is interpreted as
<code>&lt;rev&gt;..HEAD</code>, thus the same revision arguments are accepted as for
<a href="git-format-patch.html">git-format-patch(1)</a>. Patch files and revision arguments can be combined
in the same invocation.</p></div>
<div class="paragraph"><p>This command can be useful for determining the list of people with whom to
discuss proposed changes, or for finding the list of recipients to Cc: when
submitting a patch series via <code>git send-email</code>. For the latter case, <code>git
contacts</code> can be used as the argument to <code>git send-email</code>'s <code>--cc-cmd</code> option.</p></div>
</div>
</div>
<div class="sect1">
<h2 id="_discussion">DISCUSSION</h2>
<div class="sectionbody">
<div class="paragraph"><p><code>git blame</code> is invoked for each hunk in a patch file or revision.  For each
commit mentioned by <code>git blame</code>, the commit message is consulted for people who
authored, reviewed, signed, acknowledged, or were Cc:'d.  Once the list of
participants is known, each person&#8217;s relevance is computed by considering how
many commits mentioned that person compared with the total number of commits
under consideration.  The final output consists only of participants who exceed
a minimum threshold of participation.</p></div>
</div>
</div>
<div class="sect1">
<h2 id="_output">OUTPUT</h2>
<div class="sectionbody">
<div class="paragraph"><p>For each person of interest, a single line is output, terminated by a newline.
If the person&#8217;s name is known, &#8220;Name &lt;user@host&gt;&#8221; is printed; otherwise
only &#8220;&lt;user@host&gt;&#8221; is printed.</p></div>
</div>
</div>
<div class="sect1">
<h2 id="_examples">EXAMPLES</h2>
<div class="sectionbody">
<div class="ulist"><ul>
<li>
<p>
Consult patch files:
</p>
<div class="listingblock">
<div class="content">
<pre><code>$ git contacts feature/*.patch</code></pre>
</div></div>
</li>
<li>
<p>
Revision range:
</p>
<div class="listingblock">
<div class="content">
<pre><code>$ git contacts R1..R2</code></pre>
</div></div>
</li>
<li>
<p>
From a single revision to <code>HEAD</code>:
</p>
<div class="listingblock">
<div class="content">
<pre><code>$ git contacts origin</code></pre>
</div></div>
</li>
<li>
<p>
Helper for <code>git send-email</code>:
</p>
<div class="listingblock">
<div class="content">
<pre><code>$ git send-email --cc-cmd='git contacts' feature/*.patch</code></pre>
</div></div>
</li>
</ul></div>
</div>
</div>
<div class="sect1">
<h2 id="_limitations">LIMITATIONS</h2>
<div class="sectionbody">
<div class="paragraph"><p>Several conditions controlling a person&#8217;s significance are currently
hard-coded, such as minimum participation level (10%), blame date-limiting (5
years), and <code>-C</code> level for detecting moved and copied lines (a single <code>-C</code>). In
the future, these conditions may become configurable.</p></div>
</div>
</div>
<div class="sect1">
<h2 id="_git">GIT</h2>
<div class="sectionbody">
<div class="paragraph"><p>Part of the <a href="git.html">git(1)</a> suite</p></div>
</div>
</div>
</div>
<div id="footnotes"><hr /></div>
<div id="footer">
<div id="footer-text">
Last updated
 2025-06-13 22:14:31 UTC
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