Bruce Momjian <bruce(at)momjian(dot)us> writes:
> pg_ctl.c::test_postmaster_connection() has some fragile code that tries
> to detect the server port number by looking in the pg_ctl -o string,
It may be fragile, but it works; or at least I've not heard complaints
about it lately.
> I think a simpler solution would be to look in postmaster.pid:
> pg_ctl already knows the data directory. If the file is missing, the
> server is not running. If the file exists, the first number on the last
> line, divided by 1000, is the port number.
That's somewhere between fragile and outright wrong.
regards, tom lane