static void process_file_arg (const char *, const char **, FILE **);
static void read_print_stream (bool, const struct color **, const char *, FILE *);
static void merge_print_line (bool, const struct color **, const char *, const char *, FILE *);
static void process_file_arg (const char *, const char **, FILE **);
static void read_print_stream (bool, const struct color **, const char *, FILE *);
static void merge_print_line (bool, const struct color **, const char *, const char *, FILE *);