Problem: No way to get the arity of a Vim function
(Austin Ziegler)
Solution: Enhance get() Vim script function to return the function
argument info using get(func, "arity") (LemonBoy)
fixes: #15097closes: #15109
Signed-off-by: LemonBoy <thatlemon@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>