Re: cut -DF

[Pádraig Brady]

On 15/01/2022 08:44, Shehu Dikko wrote:
> * Rob Landley [2022-01-05] [gmane.comp.gnu.coreutils.general]:
> > Around 5 years ago toybox added the -D, -F, and -O options to cut:
> >
> >      -D  Don't sort/collate selections or match -fF lines without delimiter
> >      -F  Select fields separated by DELIM regex
> >      -O  Output delimiter (default one space for -F, input delim for -f)
> >
> > This lets you do:
> >
> >    $ echo one two three four five six seven eight nine | cut -DF 7,1-3,2
> >    seven one two three two
>
> Nice to see that one can specify a range of fields which is not
> something that is as straigtforward with awk. I have also seen that it's
> undocumented but one can also do the even more useful:
>
> $ echo one two three four five six seven eight nine | cut -DF 1,5-$
> one five six seven eight nine
>
> Do please also add the undocumented feature to cut.
>
> For now, it's alias cut='toybox cut'

Open ended ranges are already supported by coreutils cut:

  $ echo one two three four five six seven eight nine | cut -d ' ' -f 1,5-
  one five six seven eight nine

I don't think we need to support an explicit '$' for this.

cheers,
Pádraig