================================================================================
Operator with comment inside - comment breaks the pipe (and other seq nodes)
================================================================================

set (
    echo 1 \
    | string trim )
set (
    echo 1 \
    # This comment breaks the pipe node
    | string trim )

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

(program
  (command
    (word)
    (command_substitution
      (pipe
        (command
          (word)
          (integer)
          (escape_sequence))
        (command
          (word)
          (word)))))
  (command
    (word)
    (command_substitution
      (command
        (word)
        (integer)
        (escape_sequence))
      (comment)
      (ERROR)
      (command
        (word)
        (word)))))
