================================================================================
Escaped string
================================================================================

echo "word$hi \$bye word"

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

(source_file
  (command
    (simple_word)
    (word_list
      (quoted_word
        (variable_substitution
          (id))
        (escaped_character)))))

================================================================================
Slash in string
================================================================================

set dir $build_dir/subdir

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

(source_file
  (set
    (id)
      (variable_substitution
        (id))
      (simple_word)))

================================================================================
Curly in string
================================================================================

set v $a{b}

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

(source_file
  (set
    (id)
      (variable_substitution
        (id))
      (braced_word_simple
        (simple_word))))
