Peter Eisentraut <peter_e(at)gmx(dot)net> writes:
> Since we ran out of time/ideas on this, I would propose just committing
> the part that breaks ties based on the number of arguments, which
> already solves a large part of the problem (at least in a pre-default
> values world) and would very likely be a part of any possible future
> utterly complete solution.
Seems safe enough.
regards, tom lane