Re: portability of sed's \{0,1\}?

[Eli Zaretskii]

> Date: Fri, 11 Aug 2000 12:56:20 -0700 (PDT)
> From: Paul Eggert <[EMAIL PROTECTED]>
> 
> Most likely, seds that don't support ? and \| also don't support
> \{m,n\}, as I recall that those features were introduced to USG Unix
> at about the same time.

My references indicate otherwise.  For example, SunOS 4.x man page
for ed(1) clearly says that \{m,n\} is supported, while ? and \| are
not.  This is consistent with the latter two not being part of BRE.

Ken, could you comment on this?