Re: pg_regress breaks on msys

After looking at the presumably-working uses of system() in initdb and
pg_ctl, I have a theory about the pg_regress problem --- could it be
that Windows system() requires a space between I/O redirection symbols
and pathnames? I see that the pre-existing code consistently puts one,
except in cases like "2>&1":

snprintf(cmd, MAXPGPATH, "%s\"%s\" %s%s < \"%s\" >> \"%s\" 2>&1 &%s",
SYSTEMQUOTE, postgres_path, pgdata_opt, post_opts,
DEVNULL, log_file, SYSTEMQUOTE);

but there's nothing in our docs saying this is necessary ...

regards, tom lane