10 Eylül 2021 Cuma tarihinde Robert Elz via austin-group-l at The Open
Group <austin-group-l@opengroup.org> yazdı:
>
> When %n$ was added to those implementations of printf which support it,
> it seems to have been added in the simplest way possible - printf simply
> picks the identified arg, instead of the "next" one, and the implementation
> is more or less finished. Generally the implementations remember the
> highest
> n in any %n$ and that identifies the number of args to remove before
> determining if any remain and the format string should be rescanned.
>
Wouldn't it be more useful if, in printf(1), `n' in `%n$' referred to the
nth argument in the current set of arguments being processed? For example,
the command:
printf '%2$s %1$s\n' a b c d
would print:
b a
d c
And the command:
printf '%3$s %1$s\n' a b c d
would print:
a
c
That is, the empty string would be taken for the third argument.
--
Oğuz
