i have found a small bug in speedbar which probably prevents =
`speedbar-vc-directory-enable-hook' to work correct or to work at all.
because the docstring of run-hook-with-args says "...it is the best to =
to depend on the value returned by run-hook-with-args!..."
Otherwise the result of speedbar-vc-check-dir-p is unpredictable for all =
backends besides CVS, RCS and SCCS...