That is only with procedural macros.
Normal macros operate just by token substitutions.
Procedural macros are also special in that they are the only macros that can be 'unhygenic': creating new identifiers in the current scope that were not passed as an argument to the macro.
(Although knowing if something is a procedural macro or not is not obvious when using one in code)
Procedural macros are also special in that they are the only macros that can be 'unhygenic': creating new identifiers in the current scope that were not passed as an argument to the macro.
(Although knowing if something is a procedural macro or not is not obvious when using one in code)