-> declarations cannot immediately follow an import

[catb0t]

module A { class X {} }
module B {
  include A

  import A::X

  -> f (x) { }
  -> g (x) { }
}

the error is

[INFO] `x` is parsed as a prefix method-call at t.sf line 7
sidef: You're embarrassing me! That's not funny!

File : t.sf
Line : 7 : 6
Error: variable <x> is not declared in the current scope

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.f (x) -> Bool { }

I think the .f in the deparsed is revealing the parser bug; it is parsed as (import ...)->f(x). That's perfectly logical but it's probably not intended.

The imported name does not have to appear anywhere; the import statement alone causes the problem.

If -> f () {} is declared without arguments, then it compiles to Perl without errors, but Perl says Bareword "f" not allowed while "strict subs" in use at (eval 8) line 138.

It behaves the same if the code is not inside a module, but in main scope (but then that requires another file to demonstrate the bug).

It works in any of these separate cases:

• f is changed to func f (x) { } while g is still -> g, or
• the import is removed, but the include is kept

Here's the full -Rperl output: t.pl.txt