>Ummm, yes, and no. Vi's "ex" mode borrows heavily from its Unix v6/v7
>predecessor "ed", in terms of its command structure (the 1,$s business)
>but vi/ex was a complete rewrite from scratch and doesn't use any of
>the code from ed (or its variants, e.g. xed). One thing that they all
>ahve in common is their use of regular expressions -- something they
>share with the shell, Perl, and many other Unix components.
you're right on the naming.. it was 'ed' not 'ex'. can't think how i got
*those* mixed up. ;-)
OTOH, while i can't cite a source offhand (the O'R&A vi manual is a
probable), i was under the impression that vi, ed, ex, & sed were all
implemented by the same binary under the current unix distributions. hard
linking and name-based switching.. one of those ugly little tricks that are
made possible by the C runtime architecture, which supplies the filepath by
which a program was invoked in argv[0].
mike stone <[EMAIL PROTECTED]> 'net geek..
been there, done that, have network, will travel.
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