Eric Blake wrote:
> Paolo Bonzini <bonzini <at> gnu.org> writes:
>
>> -_AS_ECHO([$as_me:$LINENO: $1], [AS_MESSAGE_LOG_FD])])
>> +_AS_ECHO([$as_me:${as_lineno:-$LINENO}: $1], [AS_MESSAGE_LOG_FD])])
>
> Actually, the manual states that ${as_lineno:-$LINENO} is not portable; we
> have
> to stick with ${as_lineno-$LINENO} or with a more complex expression.
I'd okay with -, but what if unset does not work? I planned to do
something like
as_lineno=; AS_UNSET([as_lineno])
but that could expand to
as_lineno=; false as_lineno
Do we still care about "old BSD shells, including the Ultrix sh"? How
old are these?
Paolo
