runtime(vim): Update base-syntax, match tuples

Tuples were introduced in commit 9cb865e.  See PR #16776.

fixes: #16965
closes: #16935

Signed-off-by: Doug Kearns <dougkearns@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>

runtime/syntax/testdir/input/vim9_lambda.vim

@@ -1,4 +1,7 @@
 vim9script
+# VIM_TEST_SETUP hi link vim9LambdaOperator Todo
+# VIM_TEST_SETUP hi link vim9LambdaParen Todo
+
 
 # Vim 9 lambda expressions
 
@@ -6,6 +9,7 @@ var Foo: func
 var expr = 0
 
 # without return type
+
 Foo = () => expr
 Foo = (_) => expr
 Foo = (x) => expr
@@ -26,6 +30,7 @@ Foo = (x: number, ...y: list<number>) => expr
 Foo = (x: number, y: number) => expr
 
 # with return type
+
 Foo = (): number => expr
 Foo = (_): number => expr
 Foo = (x): number => expr
@@ -45,6 +50,27 @@ Foo = (x: number, ...y: list<number>): number => expr
 
 Foo = (x: number, y: number): number => expr
 
+# with compound return type
+
+Foo = (): list<number> => expr
+Foo = (_): list<number> => expr
+Foo = (x): list<number> => expr
+
+Foo = (...y): list<number> => expr
+Foo = (_, ...y): list<number> => expr
+Foo = (x, ...y): list<number> => expr
+
+Foo = (x, y): list<number> => expr
+
+Foo = (_: number): list<number> => expr
+Foo = (x: number): list<number> => expr
+
+Foo = (...y: list<number>): list<number> => expr
+Foo = (_: number, ...y: list<number>): list<number> => expr
+Foo = (x: number, ...y: list<number>): list<number> => expr
+
+Foo = (x: number, y: number): list<number> => expr
+
 
 # post operator comments
 
@@ -62,15 +88,29 @@ Foo = () =>
 
 # line continuations
 
+Foo = (x: string,
+      \ y: number,
+      \ z: bool) => expr
+
+Foo = (x: string,
+      \ y: number,
+      \ z: bool)
+      \ => expr
+
 Foo = (x: string,
       \ y: number,
       \ z: bool): number => expr
-# FIXME
+
 Foo = (x: string,
       \ y: number,
       \ z: bool): number
       \ => expr
 
+Foo = (x: string,
+      \ y: number,
+      \ z: bool): 
+      \ number => expr
+
 
 # funcref call
 
@@ -114,3 +154,9 @@ def Op(): func(func(number, number): number): func(number, Digit): number
 	(x: number, y: Digit): number => F(x, y.value)
 enddef ####################### ^ vimCommand?
 
+
+# Issue #16965 (vim syntax: wrong highlight with lambda, autoload, and false keyword)
+
+autocmd BufRead * timer_start(0, (_) => f#a(false, false))
+autocmd
+