result: 
[(module [(prelude "prelude")] [] []) (eoi "")]
result: 
[(module [] [(import "import" [(import_path [] me)])] []) (eoi "")]
error at line 1, column 0:
expected command
partial syntax tree:
[(module [] [] []) (eoi "")]
error at line 1, column 6:
expected "." or identifier
partial syntax tree:
[(module
  []
  [(import "import" [(import_path [] <missing>) <missing>]) <missing>]
  <missing>)
 (eoi "")]
result: 
[(module
  [(prelude "prelude")]
  [(import "import" [(import_path ["." "."] a) (import_path [] b)])
   (import "import" [(import_path [] c)])]
  [])
 (eoi "")]
result: 
[(module [] [] [(open "open" [[me [] [] [] []] [you [] [] [] []]])]) (eoi "")]
result: 
[(module
  []
  []
  [(open
    "open"
    [[me
      [["as" you]]
      [[["(" a] [b c] ")"]]
      [[["(" "renaming"] [[a "->" b] [c "->" d]] ")"]]
      [["(" "hiding" [a b] ")"]]]])])
 (eoi "")]
error at line 1, column 8:
expected command
partial syntax tree:
[(module [] [] [(open "open" [[me [] [] [] []]])]) (eoi "")]
error at line 1, column 5:
expected identifier
error at line 1, column 9:
expected identifier
partial syntax tree:
[(module
  []
  []
  [(open "open" [[<missing> <missing> <missing> <missing> <missing>] <missing>])
   (open "open" [[<missing> <missing> <missing> <missing> <missing>] <missing>])])
 (eoi "")]
error at line 1, column 8:
expected command
partial syntax tree:
[(module
  []
  []
  [(open "open" [[me [] [] [] []]]) (open "open" [[you [] [] [] []]])])
 (eoi "")]
result: 
[(module
  []
  []
  [(open "open" [[a [] [] [] []]])
   (section
    "section"
    [b]
    [(open "open" [[c [] [] [] []]])
     (section "section" [d] [(open "open" [[e [] [] [] []]])] "end" [d])]
    "end"
    [b])])
 (eoi "")]
result: 
[(module [] [] [(section "section" [a] [] "end" [])]) (eoi "")]
result: 
[(module
  []
  []
  [(notation "notation" [[] [[["`" "Prop" "`" []] []]]] ":=" (hole "_"))])
 (eoi "")]
result: 
[(mixfix "prefix" ["`" "+" "`" [[":" (base10_lit "10")]]] ":=" (hole "_"))
 (eoi "")]
(notation
 "notation"
 [[] [[["`" "+" "`" [[":" (base10_lit "10")]]] [[b [[":" (base10_lit "10")]]]]]]]
 ":="
 (hole "_"))
notation`+`:10 b:10 :=_
error at line 10, column 19:
expected "_"
error at line 11, column 26:
expected "_"
error at line 85, column 0:
expected command
partial syntax tree:
[(module
  [(prelude "prelude")]
  []
  [(notation "notation" [[] [[["`" "Prop" "`" []] []]]] ":=" (hole <missing>))
   (notation
    "notation"
    [[f] [[["`" "$ " "`" [[":" (base10_lit "1")]]] [[a [[":" (base10_lit "0")]]]]]]]
    ":="
    (hole <missing>))
   (reserve_mixfix ["reserve" "prefix"] ["`" "¬" "`" [[":" (base10_lit "40")]]])
   (reserve_mixfix ["reserve" "prefix"] ["`" "~" "`" [[":" (base10_lit "40")]]])
   (reserve_mixfix ["reserve" "infixr"] ["`" "∧ " "`" [[":" (base10_lit "35")]]])
   (reserve_mixfix ["reserve" "infixr"] ["`" "/\\ " "`" [[":" (base10_lit "35")]]])
   (reserve_mixfix ["reserve" "infixr"] ["`" "\\/ " "`" [[":" (base10_lit "30")]]])
   (reserve_mixfix ["reserve" "infixr"] ["`" "∨ " "`" [[":" (base10_lit "30")]]])
   (reserve_mixfix ["reserve" "infix"] ["`" "<-> " "`" [[":" (base10_lit "20")]]])
   (reserve_mixfix ["reserve" "infix"] ["`" "↔ " "`" [[":" (base10_lit "20")]]])
   (reserve_mixfix ["reserve" "infix"] ["`" "= " "`" [[":" (base10_lit "50")]]])
   (reserve_mixfix ["reserve" "infix"] ["`" "== " "`" [[":" (base10_lit "50")]]])
   (reserve_mixfix ["reserve" "infix"] ["`" "≠ " "`" [[":" (base10_lit "50")]]])
   (reserve_mixfix ["reserve" "infix"] ["`" "≈ " "`" [[":" (base10_lit "50")]]])
   (reserve_mixfix ["reserve" "infix"] ["`" "~ " "`" [[":" (base10_lit "50")]]])
   (reserve_mixfix ["reserve" "infix"] ["`" "≡ " "`" [[":" (base10_lit "50")]]])
   (reserve_mixfix ["reserve" "infixl"] ["`" "⬝ " "`" [[":" (base10_lit "75")]]])
   (reserve_mixfix ["reserve" "infixr"] ["`" "▸ " "`" [[":" (base10_lit "75")]]])
   (reserve_mixfix ["reserve" "infixr"] ["`" "▹ " "`" [[":" (base10_lit "75")]]])
   (reserve_mixfix ["reserve" "infixr"] ["`" "⊕ " "`" [[":" (base10_lit "30")]]])
   (reserve_mixfix ["reserve" "infixr"] ["`" "× " "`" [[":" (base10_lit "35")]]])
   (reserve_mixfix ["reserve" "infixl"] ["`" "+ " "`" [[":" (base10_lit "65")]]])
   (reserve_mixfix ["reserve" "infixl"] ["`" "- " "`" [[":" (base10_lit "65")]]])
   (reserve_mixfix ["reserve" "infixl"] ["`" "* " "`" [[":" (base10_lit "70")]]])
   (reserve_mixfix ["reserve" "infixl"] ["`" "/ " "`" [[":" (base10_lit "70")]]])
   (reserve_mixfix ["reserve" "infixl"] ["`" "% " "`" [[":" (base10_lit "70")]]])
   (reserve_mixfix ["reserve" "infixl"] ["`" "%ₙ " "`" [[":" (base10_lit "70")]]])
   (reserve_mixfix ["reserve" "prefix"] ["`" "-" "`" [[":" (base10_lit "100")]]])
   (reserve_mixfix ["reserve" "infixr"] ["`" "^ " "`" [[":" (base10_lit "80")]]])
   (reserve_mixfix ["reserve" "infixr"] ["`" "∘ " "`" [[":" (base10_lit "90")]]])
   (reserve_mixfix ["reserve" "infix"] ["`" "<= " "`" [[":" (base10_lit "50")]]])
   (reserve_mixfix ["reserve" "infix"] ["`" "≤ " "`" [[":" (base10_lit "50")]]])
   (reserve_mixfix ["reserve" "infix"] ["`" "< " "`" [[":" (base10_lit "50")]]])
   (reserve_mixfix ["reserve" "infix"] ["`" ">= " "`" [[":" (base10_lit "50")]]])
   (reserve_mixfix ["reserve" "infix"] ["`" "≥ " "`" [[":" (base10_lit "50")]]])
   (reserve_mixfix ["reserve" "infix"] ["`" "> " "`" [[":" (base10_lit "50")]]])
   (reserve_mixfix ["reserve" "prefix"] ["`" "!" "`" [[":" (base10_lit "40")]]])
   (reserve_mixfix ["reserve" "infixl"] ["`" "&& " "`" [[":" (base10_lit "35")]]])
   (reserve_mixfix ["reserve" "infixl"] ["`" "|| " "`" [[":" (base10_lit "30")]]])
   (reserve_mixfix ["reserve" "infix"] ["`" "∈ " "`" [[":" (base10_lit "50")]]])
   (reserve_mixfix ["reserve" "infix"] ["`" "∉ " "`" [[":" (base10_lit "50")]]])
   (reserve_mixfix ["reserve" "infixl"] ["`" "∩ " "`" [[":" (base10_lit "70")]]])
   (reserve_mixfix ["reserve" "infixl"] ["`" "∪ " "`" [[":" (base10_lit "65")]]])
   (reserve_mixfix ["reserve" "infix"] ["`" "⊆ " "`" [[":" (base10_lit "50")]]])
   (reserve_mixfix ["reserve" "infix"] ["`" "⊇ " "`" [[":" (base10_lit "50")]]])
   (reserve_mixfix ["reserve" "infix"] ["`" "⊂ " "`" [[":" (base10_lit "50")]]])
   (reserve_mixfix ["reserve" "infix"] ["`" "⊃ " "`" [[":" (base10_lit "50")]]])
   (reserve_mixfix ["reserve" "infix"] ["`" "\\ " "`" [[":" (base10_lit "70")]]])
   (reserve_mixfix ["reserve" "infix"] ["`" "∣ " "`" [[":" (base10_lit "50")]]])
   (reserve_mixfix ["reserve" "infixl"] ["`" "++ " "`" [[":" (base10_lit "65")]]])
   (reserve_mixfix ["reserve" "infixr"] ["`" ":: " "`" [[":" (base10_lit "67")]]])
   (reserve_mixfix ["reserve" "infixl"] ["`" "; " "`" [[":" (base10_lit "1")]]])
   (universe [["universes" [u v w]]])])
 (eoi "")]