[texhax] recursive \defs

Neal H. Walfield neal at walfield.org
Thu Aug 16 13:07:23 CEST 2012


I have a large \def that takes some parameters.  I want to define a
convenience macro, which I use from my outer definition, and which
also takes parameters.  Consider:

      xxx #1 yyy%
    \bar{aaa #1 bbb}%

When I compile this, I get:

  ! Use of \bar doesn't match its definition.
  \foo #1->\def \bar #1{xxx #1 yyy}\bar {
                                         aaa #1 bbb}
  l.12 \foo{!}
This is because the #1 in the \bar definition is expanded to the value
of the argument passed to \foo.  How do I escape the #1 in bar's
definition?  What are good approaches to do this type of thing?



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