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Can I redefine a command to contain itself?

How can I redefine the same macro that uses the original macro?


(this results in an endless loop)

calling \macro should print xyzzzz. (I want to redefine some symbols)

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marked as duplicate by diabonas, Thorsten, lockstep, Peter Grill, Roelof Spijker Apr 10 '12 at 16:17

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1 Answer 1

up vote 6 down vote accepted

Assuming that the macros don't have optional parameters you can use:


If you wish to redefine a macro that has optional parameters, you have to use \LetLtxMacro from the letltxmacro package . A detailed description of \LetLtxMacro can be found at this question at closed square root symbol.

The MWE below yields:

enter image description here



\verb|\OldMacro:| \OldMacro

\verb|\macro:| \macro
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