RGB print support for {fmt}

[Remotion]

What do you think about this RGB print support?
https://github.com/Remotion/fmt_extension/blob/develop/include/fmt_rgb.h

fmt::print(fmt::rgb(120,55,220), "some colored  text");

fmt::print(fmt::AliceBlue, "some colored text");

This also work on Windows 10 too.

[eliaskosunen]

There's (v)print_colored already:

fmt/include/fmt/core.h

Lines 1167 to 1188 in dd1a5ef

	enum color { black, red, green, yellow, blue, magenta, cyan, white };
	FMT_API void vprint_colored(color c, string_view format, format_args args);
	FMT_API void vprint_colored(color c, wstring_view format, wformat_args args);
	/**
	Formats a string and prints it to stdout using ANSI escape sequences to
	specify color (experimental).
	Example:
	fmt::print_colored(fmt::RED, "Elapsed time: {0:.2f} seconds", 1.23);
	*/
	template <typename... Args>
	inline void print_colored(color c, string_view format_str,
	const Args & ... args) {
	vprint_colored(c, format_str, make_format_args(args...));
	}
	template <typename... Args>
	inline void print_colored(color c, wstring_view format_str,
	const Args & ... args) {
	vprint_colored(c, format_str, make_format_args<wformat_context>(args...));
	}

although it's not documented anywhere and the comments deem it as experimental.

[Remotion]

Yes I know this, but it does support only 8 colors and not full RGB.

Also writing fmt::print_colored(fmt::rgb(120,55,220), "some colored text"); is too long without any benefit.

[vitaut]

What do you think about this RGB print support?

I think it can be useful and, as @eliaskosunen already pointed out, there is a limited support for this already. PRs to extend this functionality are welcome.

Also writing fmt::print_colored(fmt::rgb(120,55,220), "some colored text"); is too long without any benefit.

You are probably right, overloading fmt::print should be harmless provided that there are no undesirable conversions to rgb.