int i9e_extract_completions(const char *word, char **string_list,
char ***result);
char **i9e_complete_commands(const char *word, struct i9e_completer *completers);
void i9e_complete_option(char **opts, struct i9e_completion_info *ci,
struct i9e_completion_result *cr);
int i9e_print_completions(struct i9e_completer *completers);
int i9e_extract_completions(const char *word, char **string_list,
char ***result);
char **i9e_complete_commands(const char *word, struct i9e_completer *completers);
void i9e_complete_option(char **opts, struct i9e_completion_info *ci,
struct i9e_completion_result *cr);
int i9e_print_completions(struct i9e_completer *completers);