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m4: Debugging

 
 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
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