Patterns are not always parsed as such in conditions

[ObserverOfTime]

Conditional statement patterns should be (regex) nodes unless quoted.

Example with case

case $a in
  [a-zA-Z0-9]) ;;
esac

Current tree

(program [0, 0] - [3, 0]
  (case_statement [0, 0] - [2, 4]
    value: (simple_expansion [0, 5] - [0, 7]
      (variable_name [0, 6] - [0, 7]))
    (case_item [1, 2] - [1, 17]
      value: (concatenation [1, 2] - [1, 13]
        (word [1, 2] - [1, 3])
        (word [1, 3] - [1, 12])
        (word [1, 12] - [1, 13])))))

Expected tree

(program [0, 0] - [3, 0]
  (case_statement [0, 0] - [2, 4]
    value: (simple_expansion [0, 5] - [0, 7]
      (variable_name [0, 6] - [0, 7]))
    (case_item [1, 2] - [1, 17]
      value: (regex [1, 2] - [1, 13]))))

Example with [[

[[ $b = foo* ]]

Current tree

(program [0, 0] - [1, 0]
  (test_command [0, 0] - [0, 15]
    (binary_expression [0, 3] - [0, 12]
      left: (simple_expansion [0, 3] - [0, 5]
        (variable_name [0, 4] - [0, 5]))
      right: (word [0, 8] - [0, 12]))))

Expected tree

(program [0, 0] - [1, 0]
  (test_command [0, 0] - [0, 15]
    (binary_expression [0, 3] - [0, 12]
      left: (simple_expansion [0, 3] - [0, 5]
        (variable_name [0, 4] - [0, 5]))
      right: (regex [0, 8] - [0, 12]))))