em> can
be removed this way:</p>
</div>
<div class="listingblock">
<div class="content">
<pre>git filter-branch --msg-filter '
        sed -e "/^git-svn-id:/d"
'</pre>
</div>
</div>
<div class="paragraph">
<p>If you need to add <em>Acked-by</em> lines to, say, the last 10 commits (none
of which is a merge), use this command:</p>
</div>
<div class="listingblock">
<div class="content">
<pre>git filter-branch --msg-filter '
        cat &amp;&amp;
        echo "Acked-by: Bugs Bunny &lt;bunny@bugzilla.org&gt;"
'