The symbol !, used to show the hinst for unselected answers, presents issues when using the :randomized: option for the pick-any question

[jaguarfi]

If we prepend the ! symbol to the hints within a pick-any question, and pick-any question has the `:randomized: setting, all the hints will be displayed if one of the correct answers are not selected.

In this case, only one hint should be displayed.

  .. pick-any:: 10
    :randomized: 4
    :correct-count: 1

    :math:`20` is the result of the following arithmetic operation.

    *a. :math:`5 \times 4`
    *b. :math:`40 \div 2`
    *c. :math:`(2+2+2+2+2) \times 2`
    d. :math:`50 \div 4`
    e. :math:`6+4+8+4`
    *f. :math:`6 \times 2+2`
    g. :math:`2 \times 8+3`
    h. :math:`6+3+6+6`
    *i. :math:`4 \times (2+3)`

    !a § This is correct. Multiplication.
    !b § This is correct. Division.
    !c § This is correct. Sum and Multiplication.
    d § Incorrect answer. The solution to this operation is not equal to 20.
    e § Incorrect answer. Please try again.
    !f § This is correct. Multiplication and Sum with operator precedence.
    g § Incorrect. Remember the operators precedence.
    h § Incorrect. Verify your results.
    !i § This is correct. Sum and multiplication with grouping symbols.

[markkuriekkinen]

The hints are rendered by MOOC-Grader and the code would be fixed there. This might not require any changes in a-plus-rst-tools.