I like to use this technique for CLI command and help tables. It eliminates having a single giant table in a file, instead you have a C macro which makes the s

I like to use this technique for CLI command and help tables. It eliminates having a single giant table in a file, instead you have a C macro which makes the system aware of your command right next to your command definition. int my_command(..) { ... } COMMAND(my_command, "command_name", "example command") HELP("use --foo argument for this...") HELP("use --bar argument for that...") Also used this all the time back when I programmed assembly language. It's definitely a problem that this is not standardized. For example, TI has their own C compiler for their ARM CPUs, not everybody uses gcc..