Re: Better title output for psql \dt \di etc. commands

Greg Sabino Mullane <htamfids(at)gmail(dot)com> writes:
> I like the ntypes idea: please find attached version 3 which implements it.
> I wrote it slightly differently as I did not want to leave any chance of it
> escaping the if else blocks without a match.

Hmm, I was envisioning being a little more in-your-face about the
no-match case, because that would surely represent somebody failing
to update the code correctly when adding a new relation kind.
So I was imagining something like the attached.

One problem with it is that while we can leave "List of ???" out
of the set of translatable strings easily, we can't currently
do that for the argument of pg_log_error because it's automatically
a gettext trigger. I'd rather not burden translators with figuring
out what to do with that. Is it worth creating pg_log_error_internal,
equivalently to elog and errmsg_internal in the backend?

BTW, I updated the regression tests for this, and that bears out
your argument that one-type commands are the majority. There
are still a couple "List of relations", but not many.

regards, tom lane