Mark Thomas <mthomas(a)jprc.com> writes:
 The following patch solves the problem of losing the value of
 match-data when you change buffers while the gutter/tabs are
 visible. 
[...]
 1999-12-02  Mark Thomas  <mthomas(a)jprc.com>
 
 	* gutter-items.el (buffers-tab-items): Wrap the function in a
 	save-match-data 
Thanks for the patch; I've now applied it to the sources.