Variable declaration in typed Multiline Lambda

[plink-plonk-will]

Hi! I've noticed an issue with lambda's with statically typed return type:

Creating an untyped lambda like this works:

new_button.pressed.connect(
    func():
        var test := ""
        _game_flow.ref.request_transition(menu[button_name].transition, menu[button_name].data)
)

Creating a typed lambda without a variable declaration works:

new_button.pressed.connect(
    func() -> void:
        _game_flow.ref.request_transition(menu[button_name].transition, menu[button_name].data)
)

But creating a typed lambda containing a variable declaration does not:

new_button.pressed.connect(
    func() -> void:
        var test := ""
        _game_flow.ref.request_transition(menu[button_name].transition, menu[button_name].data)
)

Failure is:

					_game_flow.ref.request_transition(
                                        ^

Unexpected token Token('TYPE_HINT', '_game_flow.ref.request_transition') at line 52, column 6.
Expected one of: 
	* IN
	* "-="
	* ">>="
	* IS
	* ">="
	* VBAR
	* MORETHAN
	* "/="
	* LESSTHAN
	* "*="
	* "**="
	* AND
	* COMMA
	* PERCENT
	* "%="
	* "&&"
	* EQUAL
	* AS
	* "&="
	* "||"
	* PLUS
	* RPAR
	* "+="
	* AMPERSAND
	* "!="
	* SEMICOLON
	* "=="
	* ">>"
	* NOT
	* "<="
	* OR
	* "<<="
	* SLASH
	* IF
	* CIRCUMFLEX
	* STAR
	* "<<"
	* "**"
	* "|="
	* "is not"
	* "^="
	* DOT
	* MINUS
	* LSQB
Previous tokens: [Token('_NL', '\n\t\t\t\t\t')]

[Scony]

Hi, thank you for reporting.

I've confirmed this is a bug within lexer that produces such a strange error on the high level.

I've quick-fixed the issue on master. I'll prepare more generic fix soon, but you should be already able to proceed.

[plink-plonk-will]

That was fast! Thank you!