Difference between "ASCII alphabetic character required. A-Z, a-z. a" and "ASCII alphabetic character permitted but not required." on QLineEdit input



  • What is the difference between the following two settings for input mask on a QLineEdit.So far i find that they have the same effect.I suspect there is something I am not seeing.

    A ASCII alphabetic character required. A-Z, a-z.
    a ASCII alphabetic character permitted but not required._

    Thanks.


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