_pu_start_of_path
start_path = _pu_start_of_path(line, word_end);
start_path = _pu_start_of_path(gl->line, gl->buff_curpos);
start_path = _pu_start_of_path(gl->line, gl->buff_curpos);
start_path = _pu_start_of_path(gl->line, gl->buff_curpos);
char *_pu_start_of_path(const char *string, int back_from);
start_path = _pu_start_of_path(line, word_end);