PG Bug reporting form <noreply(at)postgresql(dot)org> writes:
> I accidentally found that the \d command in psql does not match exactly, but
> it can be executed. Just like the demo below.
Yeah, this is true for the entire \d family: trailing garbage in the
command name doesn't really matter. I'm not excited about trying
to tighten that up; we'd likely get more complaints than kudos.
regards, tom lane