Re: [Groff] condition: OR of two string comparisons

[Werner LEMBERG]

>> But (E; expr) would cover only a minor subset of possible improvements
>> – it would be still necessary to provide backwards compatibility.
> 
> Would it?  That form could reject backwards compatibility;  only new
> format allowed, just as after .iff.  I don't see why old syntax has to
> be handled if it currently makes no sense to use `E' after the `('.

Well, using (E;...) everywhere is tedious.  Maybe it makes more sense
to have the slightly more verbose

  .iff
  .then
  .else

so that we can avoid excessive parentheses – the `.then' keyword would
be the sentinel to stop the conditional expression.  Alternatively, we
could mandate to always use braces:

  .iff ... \{\
  .\}
  .else \{\
  .\}


    Werner