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Macro Details

Due to unavoidable disparities in the TeX and @command{makeinfo} implementations, Texinfo macros have the following limitations.

• All macros are expanded inside at least one TeX group. This means that @set and other such commands will have no effect inside a macro.
• Macros containing a command which must be on a line by itself, such as a conditional, cannot be invoked in the middle of a line.
• The TeX implementation cannot construct macros that define macros in the natural way. To do this, you must use conditionals and raw TeX. For example:

  @ifinfo
  @macro ctor {name, arg}
  @macro \name\
  something involving \arg\ somehow
  @end macro
  @end macro
  @end ifinfo
  @tex
  \gdef\ctor#1{\ctorx#1,}
  \gdef\ctorx#1,#2,{\def#1{something involving #2 somehow}}
  @end tex
  

• It is best to avoid comments inside macro definitions.

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