[issue13475] Add '-p'/'--path0' command line option to override sys.path[0] initialisation

[Nick Coghlan]

Nick Coghlan <ncoghlan at gmail.com> added the comment:

I realised "-P" is available for use as the short form of the "suppress sys.path[0] initialisation" option.

So "-p" would override the calculation of sys.path[0], while "-P" would switch it off completely (similar to the way "-S" and "-E" switch off other aspects of the normal initialisation process).

Whether or not to provide "--path0" and "--nopath0" as long form alternatives would then be a separate question.

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