On Sun, Oct 24, 2021 at 04:26:44PM +0200, Martin Schulte wrote:
> Hi Greg, hi *!
>
> > For bash scripts using this, I'd go a little bit fancier:
> >
> > read_line() {
> > if (($# == 0)) || [[ ${!#} = -* ]]; then
> > declare -n _rl_lastvar=REPLY
> > else
> > declare -n _rl_lastvar=${!#}
> > fi
> > read -r "$@" || test -n "$_rl_lastvar"
> > }
>
> Great, thanks - this solution seems to solve more real world problems than it
> introduces ;-)
>
> > This intentionally skips a trailing incomplete line that has too few
> > fields, as in:
> >
> > ...
> >
> > The incomplete line here only has one field, so the "lastvar" (b) is
> > empty, and therefore the incomplete line isn't counted. I consider
> > this a feature, but others may not.
>
> Yes, one might discuss this...
>
> Nevertheless, am I right that this solution relies on an undocumented feature?
Which "undocumented" feature did you have in mind? Most things are
documented, somewhere.
Are you thinking of -d '' signifying NUL as the delimiter? Chet told
us that he supports this "happy accident" and won't take it away.
Are you thinking of the equivalence of "$array" and "${array[0]}"? I
think that's documented somewhere, but I'm not going to dig for it right
now.
