Unusual preprocessors in longstanding classical languages such as C and Fortran should be a well-considered decision. I know a particular example of a mature Fo

Unusual preprocessors in longstanding classical languages such as C and Fortran should be a well-considered decision. I know a particular example of a mature Fortran code which must be preprocessed with a weird perl script which enriches the Fortran notation with some semantic meaning of the array indices. We can do something similar now in a C++ code which uses templates but can be compiled without any tricks. My personal bottom line: Better stick to the language canon and switch the complete infrastructure then only parts of it, except it is a small developer group or exceptional documentation.