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Fix rejection of non-ambigious options
This GetOpt patch was sent the the libraries list by Eelis van der Weegen with the explanation: There is a bug in System.Console.GetOpt causing it to mistakenly reject options as ambiguous. Example: optsDesc = [Option "" ["color", "colour"] (ReqArg id "color") ""] Output: option `--col' is ambiguous; could be one of: --color=color, --colour=color Foreground color --color=color, --colour=color Foreground color This error is silly, because the two alternatives listed are the same option.
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