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

I do not like the choice of "elseif", which exists in PHP & VB. PL/pgSQL has "ELSIF" like perl, that I do not like much, though. Given the syntax and behavioral proximity with cpp, I suggest that "elif" would be a better choice.

I'm personally indifferent to elif vs elsif vs elseif, but I think elseif was the consensus. It's easy enough to change.

 

Documentation: I do not think that the systematic test-like example in the documentation is relevant, a better example should be shown. The list of what is considered true or false should be told explicitely, not end with "etc" that is everyone to guess.

It was copied from the regression test. I knew there would be follow-up suggestions for what should be shown.

  case ...: case ...:

The project rules are to add explicit /* PASSTHROUGH */ comment.

Will do.