Re: bug in emacs 21.2.1?

[Richard Stallman]

This does not fail for me in the latest development Emacs,
or in the pre-21.3 sources I have.  However, your test case
is not precise; it's possible that it fails in some cases
but not the one I tried.

Please read the Bugs section in the Emacs manual, which provides
guidelines on how to write a bug report to give us the
necessary information so we can fix the bug.