// Basic call, whitespace insignificant.
[f], [ f ], [
    f
]

[f bold]

[f 1,]

[f a:2]

[f 1, a: (3, 4), 2, b: "5"]

---
// Body and no body.
[f][[f]]

// Lots of potential bodies.
[f][f][f]

// Multi-paragraph body.
[box][
    First

    Second
]

---
// Chained.
[f | f]

// Multi-chain.
[f|f|f]

// With body.
[f | box][💕]

// Error: 1:2-1:2 expected function name
[|f true]

// Error: 1:6-1:6 expected function name
[f 1|]

// Error: 2:5-2:5 expected closing paren
// Error: 1:8-1:9 expected expression, found closing paren
[f (|f )]

// With actual functions.
[box width: 1cm | image "res/rhino.png"]

---
// Error: 1:4-1:6 expected expression, found end of block comment
[f */]

// Error: 1:7-1:8 expected expression, found colon
[f a:1:]

// Error: 1:5-1:5 expected comma
[f 1 2]

// Error: 2:4-2:5 expected identifier
// Error: 1:6-1:6 expected expression
[f 1:]

// Error: 1:4-1:5 expected identifier
[f 1:2]

// Error: 1:4-1:7 expected identifier
[f (x):1]

---
// Ref: false
// Error: 2:2-2:3 a value of type string is not callable
#let x = "string";
[x]

// Error: 1:2-1:3 expected function name, found hex value
[# 1]

// Error: 4:1-4:1 expected function name
// Error: 3:1-3:1 expected closing bracket
[

---
// Ref: false
// Error: 2:2-2:3 expected function name, found closing paren
// Error: 3:1-3:1 expected closing bracket
[)

---
// Error: 3:1-3:1 expected closing bracket
[f [*]

---
// Error: 3:1-3:1 expected closing bracket
[f][`a]`

---
// Error: 3:1-3:1 expected quote
// Error: 2:1-2:1 expected closing bracket
[f "]