Capitalized log level

[luzilong2005]

By default, when using %l, the level is output in lowercase. How can it be displayed in uppercase?
For example: [INFO] Hello

[tt4g]

You can change the log level by defining the SPDLOG_LEVEL_NAMES macro.

spdlog/include/spdlog/tweakme.h

Lines 102 to 121 in 45b67ee

	///////////////////////////////////////////////////////////////////////////////
	// Uncomment to customize level names (e.g. "MY TRACE")
	//
	// #define SPDLOG_LEVEL_NAMES { "MY TRACE", "MY DEBUG", "MY INFO", "MY WARNING", "MY ERROR", "MY
	// CRITICAL", "OFF" }
	//
	// For C++17 use string_view_literals:
	//
	// #include <string_view>
	// using namespace std::string_view_literals;
	// #define SPDLOG_LEVEL_NAMES { "MY TRACE"sv, "MY DEBUG"sv, "MY INFO"sv, "MY WARNING"sv, "MY
	// ERROR"sv, "MY CRITICAL"sv, "OFF"sv }
	///////////////////////////////////////////////////////////////////////////////
	///////////////////////////////////////////////////////////////////////////////
	// Uncomment to customize short level names (e.g. "MT")
	// These can be longer than one character.
	//
	// #define SPDLOG_SHORT_LEVEL_NAMES { "T", "D", "I", "W", "E", "C", "O" }
	///////////////////////////////////////////////////////////////////////////////

Another way.
You can define custom log format (flag).
See Wiki: https://github.com/gabime/spdlog/wiki/Custom-formatting#extending-spdlog-with-your-own-flags