[Issue 18019] getopt: different behaviour for built-in and custom options

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=18019

Dmitry <dmitry at indiedev.ru> changed:

           What    |Removed                     |Added
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            Summary|getopt wrong behaviour      |getopt: different behaviour
                   |(ConvException instead of   |for built-in and custom
                   |GetOptException)            |options

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