Hello Daniel,

Ah, I see why *that* wants to know about it ... I think.  I suppose you're
arguing that variable expansion shouldn't be able to insert, say, an \else
in a non-active branch?  Maybe, but if it can insert an \else in an active
branch, then why not non-active too?  Seems a bit inconsistent.

Are we sold on the idea that conditionals should be implemented
by meta-commands, rather than for example terminal symbols of
a new grammar on top of the existing?

I would say that this already exists server-side, and it is named PL/pgSQL:-)

I think that once psql has started with \xxx commands, then client-side extensions must stick with it till the end of time.


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