[Octave-bug-tracker] [bug #51439] Save file dialog not allowing file to be saved on VMWare shared folder

[Mike Miller]

Follow-up Comment #7, bug #51439 (project octave):

If you do want to investigate, the Qt code is pretty clear on what tests it
does to decide whether to enable or disable the Save button.

https://github.com/qt/qtbase/blob/5.9/src/widgets/dialogs/qfiledialog.cpp#L3493

Just by reading the code, the case that seems most likely to me is that the
filesystem is returning 0 for the maximum file name length. This can be tested
in the command shell with


$ getconf _POSIX_NAME_MAX /mnt/hgfs/whatever


If that returns a number greater than 0 (for example 255 on a typical Linux
native filesystem), then it may take using a debugger to see when the button
state is set to disabled.

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