Spaces inside function calls

[lhunath]

It would be great to have the option to insert spaces inside function call parenthesis (matching AppCode's Method/function call parenthesis option).

@available( *, unavailable, renamed: "M" )
func foo() {}

bar( name: "Hello, \(world)!", len: 13 )

x = f( x * 3 + 5 )

print( "unexpected error!" )

These spaces create very useful visual distinction between the function and their parameters, which helps a lot with avoiding the density that results from having no spaces there, visually merging the function name and parameters, increasing cognitive load.

Related & based on the same rationale, we might also consider spaces inside collections:

[ .foo: "Foo", .bar: "Bar" ]
[ .foo, .bar ]

Existing spaces inside parenthesis are currently removed by the following rules:

• spaceInsideParens
• wrap
• wrapArguments