I wrote:
> Oh, right -- it does let PostgreSQL automatically deal with the file
> left by a different instance, but could still fail on it's own file.
Er, it does let PostgreSQL automatically deal with a different
instance using the PID matching what this instance left in its file,
but could be a problem if something else under this same user ID, like
a higher level script above pg_ctl, is now using the PID.
<sigh />
-Kevin
