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* @defgroup options Options
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* Opaque type for options ADT.
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typedef struct options options_t;
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int options_new(options_t **opts, size_t nopts);
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int options_get_option(options_t *opts, char **val, size_t key);
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int options_set_option(options_t *opts, size_t key, char *val);
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int options_free(options_t *opts);
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#endif /* _OPTIONS_H */