================================================================================
Export keyword
================================================================================

export VAR=one
export  VAR  = one
export	TAB=two
export export=var

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

(document
 (assignment
  (export)
  (identifier)
  (value))
 (assignment
  (export)
  (identifier)
  (value))
 (assignment
  (export)
  (identifier)
  (value))
 (assignment
  (export)
  (identifier)
  (value))
)

================================================================================
Export-like identifiers
================================================================================

export=one
export = one
exportVAR=two
exportVAR = two


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

(document
 (assignment
  key: (identifier)
  value: (value))
 (assignment
  key: (identifier)
  value: (value))
 (assignment
  key: (identifier)
  value: (value))
 (assignment
  key: (identifier)
  value: (value))
)