definitions local to a component

definitions local to a component

[Sanjoy Mahajan]

What's the safe way to make \def's local to a component?  I could wrap
each component in a \begingroup..\endgroup but that might do bad
things to the output routine.

-Sanjoy

`Never underestimate the evil of which men of power are capable.'
         --Bertrand Russell, _War Crimes in Vietnam_, chapter 1.

Re: definitions local to a component

[Hans Hagen]

Sanjoy Mahajan wrote:
> What's the safe way to make \def's local to a component?  I could wrap
> each component in a \begingroup..\endgroup but that might do bad
> things to the output routine.
>   
\pushmacro\whateveryouwant

ungrouped stuff 

\popmacro\whateveryouwant


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Re: definitions local to a component

[Sanjoy Mahajan]

> \pushmacro\whateveryouwant
> ungrouped stuff 
> \popmacro\whateveryouwant

Thanks, that works.  A small example, in case others find it useful:

\starttext
\def\y{outside\par}
\y
\pushmacro\y
\def\y{inside\par}
\y
\popmacro\y
\y
\stoptext

which produces

outside
inside
outside


-Sanjoy

`Never underestimate the evil of which men of power are capable.'
         --Bertrand Russell, _War Crimes in Vietnam_, chapter 1.