Yuri said:
> > This helped, but there is still some valid shell syntax in BSD
> > (Almquist) shell that is highlighted red:
> > > CR=$'\r'
> > > NL=$'\n'
> > dollar sign and enclosing quotation symbols.

Christian replied: 
> That is not valid posix syntax, isn't it?

Indeed, that's ksh syntax; with ash it accepts it but includes an extra $ 
character. The correct syntax with my ash is
CR='\r'
NL='\n'

In this case flagging the $ as an error is useful, with my ash at least.

Regards, John Little

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