On Tue, 27 Dec 2016 15:21:11 +0100 Laslo Hunhold <d...@frign.de> wrote:
> On Tue, 27 Dec 2016 15:14:44 +0100 > Mattias Andrée <maand...@kth.se> wrote: > > Hey Mattias, > > > POSIX says “--” should be supported unless stated > > otherwise. I interpret that standard saying that this > > also applies utilities that do not take any flags. And > > to be on the safe side I think it is a good idea to > > support “--” for two reasons: (1) existing scripts may > > require it, and (2) if POSIX adds a flag to the utility > > in the future we must support “--” now, otherwise > > compatibility will be broken. > > so what about "echo --"? > > Cheers > > Laslo > POSIX explicitly states that echo(1) shall treat “--” as a string operand and not as a delimiter. My guess is that this is for historical reason, much like the existence of echo(1) itself.
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