================================================================================
Simple shape key
================================================================================
foo
bar

--------------------------------------------------------------------------------

(source_file
  (shape (shape_key))
  (shape (shape_key))
)

================================================================================
Complex shape key
================================================================================
 Foo bar 
-Biz-baz-

--------------------------------------------------------------------------------

(source_file
  (shape (shape_key))
  (shape (shape_key))
)

================================================================================
Use quoted string as a shape key
================================================================================
'foo'

--------------------------------------------------------------------------------

(source_file
  (shape (shape_key (string)))
)

================================================================================
Define multiple shapes using semicolons
================================================================================
a;b;c

--------------------------------------------------------------------------------

(source_file
  (shape (shape_key))
  (shape (shape_key))
  (shape (shape_key))
)

================================================================================
Labeled shapes
================================================================================
a: Foo Bar
a: Foo Bar; b: Biz Baz

--------------------------------------------------------------------------------

(source_file
  (shape (shape_key) (label))
  (shape (shape_key) (label))
  (shape (shape_key) (label))
)

================================================================================
It should skip white spaces
================================================================================

foo

bar   :  Foo Bar;     baz

--------------------------------------------------------------------------------

(source_file
  (shape (shape_key))
  (shape (shape_key) (label))
  (shape (shape_key))
)

================================================================================
Use quoted string as shape key and label
================================================================================
'foo': "Label"

--------------------------------------------------------------------------------

(source_file
  (shape (shape_key (string)) (label (string)))
)