root ()
....node1 (col 4 line 1 range {1 3} text foo type Command)
........node5 (col 6 line 1 range {5 5} text x type Text)
........node7 (col 9 line 1 range {7 8} text {$y} type Text)
....node8 (col 0 line 2 range {10 10} text {
} type Text)