Re: Invoking as 'ed - filename' broken in ed-0.3-pre[12]

[Paul Eggert]

>> So please revert that change.  POSIX explicitly permits the
>> traditional behavior, and I don't see why GNU 'ed' should depart from it.
>
> POSIX permits the use of `-' as a filename,

Sure, but that does not contradict my statement.  POSIX allows 'ed -'
to generate whatever output it likes.  "ed -" could output a copy of
the Rime of the Ancient Mariner, say.  But that's not enough
justification to change from behavior that has been common practice
for 30 years, especially when such a change breaks widely used and
stable applications that themselves have been common use for over 20 years.