Say whether a given stream should be colorized or not. It's always true for ATTY streams and may be true for streams marked with colorize flag.

Change Windows Terminal colors attribute. If some parameter is `-1` then attribute won't changed.

Format help message

An index to be used to access a private storage of I/O streams. See colorize / nocolorize I/O manipulators for details. Due to the fact that static va

auxiliary function for binary search in interval table */

Test whether a given `std::ostream` object refers to a terminal.

Call parse_args_internal - which does all the work * Then, validate the parsed arguments * This variant is used mainly for testing * @throws

* @throws std::runtime_error if argument values are not valid */

clear??

Used by print_help.

Since C++ hasn't a true way to extract stream handler from the a given `std::ostream` object, I have to write this kind of hack.

* positional: * _empty_ * '-' * '-' decimal-literal * !'-' anything */

* The following functions are the same as mk_wcwidth() and * mk_wcswidth(), except that spacing characters in the East Asian * Ambiguous (A) categor