patch to add getopt parsing to expr

[Joerg Sonnenberger]

On Tue, Jan 20, 2009 at 10:18:37AM -0500, Joe Talbott wrote:
> Since POSIX requires arguments beginning with '-' to be options
> shouldn't the following result in an error?

No. POSIX only says that -- has to be supported to disable the use of
options. It doesn't say that options have to be used.

Joerg