Multi-expression matching support

[Lyrth]

Would it be possible (and useful) to have match accept multiple expressions? Each match expression will match the corresponding case expression and evaluated as an and for each expression in a case.

local a, b = 2, 5
match a, b+1 {
  1,   a   => { print('no') }
  2,   4   => { print('neither') }
  b-1, 6   => { print('nay') }
  2,   a*3 => { print('THIS CASE will be selected') } 
}

If implemented, will probably be neater to have "passthrough" case expressions too, that technically works as a wildcard that always matches for that case expression, albeit it might be difficult to come up with a symbol (or existing keyword) for it.

[Markos-Th09]

There is no case in clue. Also I am not sure how the b-1 and a*3 patterns would work, as they not supported anyways.

[Lyrth]

Oops, fixed that. Also unknowingly removed the print parentheses.

As for the latter concern, they do work and end up being if (_internal0 == b-1), etc. The precedence is another story, but in this case it's not a worry (yet)

[Markos-Th09]

Oops, fixed that. Also unknowingly removed the print parentheses.

As for the latter concern, they do work and end up being if (_internal0 == b-1), etc. The precedence is another story, but in this case it's not a worry (yet)

this is if statement is basically unintended behavior, since b won’t be defined to what you would expect it to be?

[Maiori44]

match branches can have any expression for its pattern, even if it's a useless/nonsensical expression