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--debug

-d

Enable the interactive debugger. See the Interactive Debugger documentation for more information.

The optional file argument is a list of debugger commands that are provided to the debugger as if it was type by the user.

This option cannot be used with the --trace option.

Enable a trace mode. This mode prints out helpful information during every stage of parsing.

This option cannot be used with the --debug option.

--version

-v

Enable verbose output.