I don't know that there's a general way.  Each command has
its own options, some of which might override components.
This overrides the moreproc profile component for
mhshow:

  $ mhshow -moreproc cat

Something like -moreproc true would be equivalent to
unsetting it, I suppose.

David


Paul wrote:

> can someone remind me how to replace a profile component
> for a single invocation of an mh command?
> 
> say, for instance, i wanted to override, or even unset, moreproc? 
> i'm missing it in the man pages...

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