Re: [RFC] test: Old shells and physical paths

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Hi,

On Thu, Dec 20, 2012 at 12:01 AM, David Aguilar <davvid@xxxxxxxxx> wrote:
> Do you know if the differences are relegated to "cd",
> or do other common commands such as awk, grep, sed, mktemp, expr,
> etc. have similar issues?

There are almost certainly going to be incompatibilities with other
commands.  The system implemented UNIX95 plus some extensions, then
they began supporting UNIX03/SUSv3/POSIX.1-2001/whatever for certain
commands by using an environment variable to toggle between the
incompatible behaviors.

Their documentation on the UNIX03 commands indicates it is still only
partially supported.  For example: "cp" supports "-L" and "-P", but
"cd" doesn't.

> I wonder if it'd be helpful to have a low-numbered test that checks
> the basics needed by the scripted Porcelains and test suite.
> It would give us an easy way to answer these questions, and could
> be a good way to document (in code) the capabilities we expect.

I'd be in favor of something like this as well.

Thanks.

David


P.S.
In the meantime, I am handling the "cd" situation by replacing "-P"
with "$PHYS" and prepending the following to t/test-lib.sh.
set +o logical >/dev/null 2>&1 || PHYS=-P
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