================================================================================
Line comment
================================================================================

% Foo
Bar

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

(source_file
  (line_comment)
  (text
    (word)))

================================================================================
Escaped percent
================================================================================

\% Foo

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

(source_file
  (generic_command
    (command_name))
  (text
    (word)))

================================================================================
Block comment
================================================================================

Hello World

\iffalse

\foo Bar \begin{Baz

\fi

Test

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

(source_file
  (text
    (word)
    (word)
    (block_comment
      (comment))
    (word)))
