==================
Commas delimit fields by default
==================
#!srfv1
name::alice,age:num:30
name::bob,age:num:25

---

(document
  (magic)
  (field
    (untyped_field
      (key)
      (value)))
  (field
    (typed_field
      (key)
      (type_hint)
      (value)))
  (field
    (untyped_field
      (key)
      (value)))
  (field
    (typed_field
      (key)
      (type_hint)
      (value))))

==================
Explicit compact directive
==================
#!srfv1
#!compact
name::alice,age:num:30

---

(document
  (magic)
  (directive
    (directive_compact))
  (field
    (untyped_field
      (key)
      (value)))
  (field
    (typed_field
      (key)
      (type_hint)
      (value))))

==================
Last format directive wins
==================
#!srfv1
#!long
#!compact
name::alice,age:num:30

---

(document
  (magic)
  (directive
    (directive_long))
  (directive
    (directive_compact))
  (field
    (untyped_field
      (key)
      (value)))
  (field
    (typed_field
      (key)
      (type_hint)
      (value))))

==================
Directives sharing a prefix with the format markers
==================
#!srfv1
#!created=1772500000
#!longhand=1
#!compaction=1
name::alice,age:num:30

---

(document
  (magic)
  (directive
    (directive_created
      value: (timestamp)))
  (directive
    (directive_unknown))
  (directive
    (directive_unknown))
  (field
    (untyped_field
      (key)
      (value)))
  (field
    (typed_field
      (key)
      (type_hint)
      (value))))

==================
A format marker inside an inline comment is not a directive
==================
#!srfv1
#!long # compact format is optional #!compact
name::alice, bob

---

(document
  (magic)
  (directive
    (directive_long
      (inline_comment)))
  (field
    (untyped_field
      (key)
      (value))))

==================
A format marker in a value is not a directive
==================
#!srfv1
k::#!long,j::#!compact
name::alice,age:num:30

---

(document
  (magic)
  (field
    (untyped_field
      (key)
      (value)))
  (field
    (untyped_field
      (key)
      (value)))
  (field
    (untyped_field
      (key)
      (value)))
  (field
    (typed_field
      (key)
      (type_hint)
      (value))))

==================
Compact format from the SRF README
==================
#!srfv1 # mandatory comment with format and version. Parser instructions start with #!
key::string value must have a length between colons or end with a comma,this is a number:num:5 ,null value:null:,array::array's don't exist. Use json or toml or something,data with newlines must have a length:7:foo
bar,boolean value:bool:false
key::this is the second record

---

(document
  (magic
    (inline_comment))
  (field
    (untyped_field
      (key)
      (value)))
  (field
    (typed_field
      (key)
      (type_hint)
      (value)))
  (field
    (typed_field
      (key)
      (type_hint)))
  (field
    (untyped_field
      (key)
      (value)))
  (field
    (typed_field
      (key)
      (type_hint)
      (value)))
  (field
    (typed_field
      (key)
      (type_hint)
      (value)))
  (field
    (untyped_field
      (key)
      (value))))