Re: \if, \elseif, \else, \endif (was Re: PSQL commands: \quit_if, \quit_unless)

Hello Corey,

> It doesn't strike me as much cleaner, but it's no worse, either.

Hmmm.

The "if (x) { x = ... ; if (x) {" does not help much to improve
readability and understandability...

My 0.02€ about v19:

If there are two errors, I do not care which one is shown, both will have
to be fixed anyway in the end... So I would suggest to choose the simplest
possible implementation:

on elif:
always eval expression
=> possible eval error
switch
=> including detecting misplaced elif errors

If the second error must absolutely be shown in all cases, then add a
second misplaced elif detection in the eval expression failure branch:

on elif
always eval
if (eval failed)
also checked for misplaced (hey user, you have 2 errors in fact...)
bye bye...
// else eval was fine
switch
including misplaced elif detection

If the committer is angry at these simple approach, then revert to the
strange looking and hard to understand switch-if-switch solution (~ v18,
or some simplified? v19), but I do not think the be weak benefit is worth
the code complexity.

--
Fabien.