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Programming in M4sugar

M4 by itself provides only a small, but sufficient, set of all-purpose macros. M4sugar introduces additional generic macros. Its name was coined by Lars J. Aas: "Readability And Greater Understanding Stands 4 M4sugar".

• Redefined M4 Macros: M4 builtins changed in M4sugar
• Evaluation Macros: More quotation and evaluation control
• Forbidden Patterns: Catching unexpanded macros