File: m4.info,  Node: Debugging,  Next: Input Control,  Prev: Conditionals,  Up: Top

7 How to debug macros and input
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When writing macros for ‘m4’, they often do not work as intended on the
first try (as is the case with most programming languages).
Fortunately, there is support for macro debugging in ‘m4’.

* Menu:

* Dumpdef::                     Displaying macro definitions
* Trace::                       Tracing macro calls
* Debug Levels::                Controlling debugging output
* Debug Output::                Saving debugging output