RE: return codes

Correction:

> :0
> * $ RC ?? ^^1^^
> {   } # Return code is exactly 1
Got a little crazy with the $-sign there. It doesn't hurt anything,
but isn't needed either. Rewrite:

:0
* ! ? razor-check
{
RC=$?
 
:0
* -1^0
* $ $RC^0
{ ONE_OR_MORE = yes } # Return code is > 1
 
:0
* RC ?? ^^1^^
{ EXACTLY_ONE = yes  } # Return code is exactly 1
 
}


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