Compact syntax for combining `Tuple` and `NamedTuple`: `(1, 2; x=2, y=3) == ((1, 2), (x=2, y=3))`

[mtfishman]

@Henrique_Becker

Sincerely, thinking a little more about the subject, I think this is a no-go because of ambiguity.

julia> (1; x = 2)
2

For elements with a single positional argument and a single keyword argument the syntax already means do anything before the ; and then set the variable after the ; .

What if we required a trailing comma for that case?

julia> (1; x=2)
2

julia> (1,; x=2)
ERROR: syntax: unexpected semicolon in tuple around REPL[24]:1
Stacktrace:
 [1] top-level scope
   @ REPL[24]:1

Not much different from disambiguating (1) from (1,) for making either an expression or Tuple.