Commits on Jun 29, 2023

1. main: improve test flag handling …

   A TestMain func is added to parse the test executable's flags.  Before running
   all tests, any flags that it did not parse (in particular, those following a
   double hyphen (--) which the flag package will stop parsing after) are retained
   in the modified os.Args value.  This allows the tests that exercise go-flags
   options to test these options with any user-provided flags prepended.
   
   One such use case for this fix is to change the default appdata directory that
   tests will use, which allows tests to succeed when the default home directory is
   read only.  For example:
   
   go test . -args -- --appdata=/some/other/appdata
   
   This well cause the go-flags tests to perform their tests with their own options
   being tested following the appdata change.

   

   jrick committed Jun 29, 2023
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