Re: psql tab completion & USERSET vars

Neil Conway <neilc@samurai.com> writes:
> While reviewing Andrew Dunstan's patch that implements the
> log_disconnections GUC var, I noticed that tab-complete.c in psql
> claims that only "USERSET and possibly SUSET" GUC variables should be
> included in the list of variables that can be auto-completed.

I think I was the one who put in that suggestion (which I agree has been
largely ignored subsequently).  The motivation was to avoid cluttering
the tab completion facility with seldom-used parameters.  As an example,
the presence of the "stats_xxx" parameters in the tab list means more
keystrokes are needed to type "statement_timeout".  Seems like this is a
bad tradeoff considering that people would rarely bother to look at the
stats settings.

I'm not by any means wedded to the "USERSET and possibly SUSET" policy,
but I would like to stop somewhere short of "include everything".  Any
thoughts?
        regards, tom lane