I had the session still open, so I narrowed the match-data change to semantic-mrub-push before it stopped reproducing.<br><br>The trace: semantic-change-function<br>     calls (run-hook-with-args &#39;semantic-change-functions start end length)<br>

     calls semantic-edits-change-function-handle-changes<br>     calls (run-hook-with-args &#39;semantic-edits-new-change-functions o)<br>     calls semantic-mru-bookmark-change-hook-fcn<br>     calls semantic-mrub-push<br>

<br>I&#39;ve forwarded this bug report to cedet-semantic list.<br><br>