Re: [PATCH] t0001: fix broken not-quite getcwd(3) test in bed67874e2

>> On AIX under both bash and ksh this test breaks because "pwd -P" will
>> happily display the current working directory, but getcwd(3) called by
>> the "git init" we're testing here will fail to get it.
>>
>> I checked whether clobbering the $PWD environment variable would
>> affect it, and it didn't. Presumably these shells keep track of their
>> working directory internally.
>>
>> Let's change the test to a new "test-tool getcwd".
>
> Makes sense.
>
> If /bin/pwd can figure out the path to the current working directory
> without read permissions to parent directories then it might be possible
> to teach strbuf_getcwd() the same trick, though.  How does it do it?
> ...
> If strbuf_getcwd() were to learn any of these tricks, then so would
> "test-tool getcwd", via its xgetcwd() call.  At that point we'd better
> rename GETCWD_IGNORES_PERMS to XGETCWD_IGNORES_PERMS.
>
> But I guess we need none of that because we never got a request from
> an AIX user to support a /home directory without read permissions,
> right?