Robert Haas <robertmh...@gmail.com> writes:
> On Wed, Oct 2, 2024 at 6:00 AM Daniel Westermann (DWE)
> <daniel.westerm...@dbi-services.com> wrote:
>> Maybe checking if a valid "-D" or "--pgdata" was given and return a more
>> generic error message would be an option?
> It doesn't really seem reasonable to me to make the tools guess
> whether somebody left out the argument to an option that requires an
> argument. Consider these equivalent cases:
> ...
> I assume there are similar cases that don't involve PostgreSQL at all.
Yeah. This has to be a standard problem for anything that uses getopt
or getopt_long at all. Unless there's a standard approach (which I've
not heard of) to resolving these ambiguities, I'm not sure that we
should try to outsmart everybody else.
In the case of getopt_long there's an additional problem, which is
that that function itself may contain heuristics that rearrange the
argument order based on what looks like a switch or not. It's likely
that anything we did on top of that would behave differently depending
on which version of getopt_long it is.
regards, tom lane
