| Value | Meaning |
|---|---|
| UnknownOption0 | An option was not known to the parser. This error will only be reported, if the parser hasn't been instructed to ignore unknown options, see glib.option_context.OptionContext.setIgnoreUnknownOptions. |
| BadValue1 | A value couldn't be parsed. |
| Failed2 | A #GOptionArgFunc callback failed. |
Error codes returned by option parsing.