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Ellipsis mode for zmacs?
Date: Wed, 26 Jun 1991 13:46-0400
From: Barry Margolin <barmar@Think.COM>
Date: Tue, 25 Jun 1991 19:05 EDT
From: rsl@MAX-FLEISCHER.SF.Dialnet.ILA.COM (Richard Lamson)
I assume so, because Concordia uses it. I don't know anything about how
you actually build buffers which can do this, though.
I think this is the "disconnected sections" stuff that appeared in Zwei
a few releases ago.
Unfortunately, there don't appear to be any uses of this in the standard
system, so there are no source examples to look at. From what I can
tell, the way you do this is to define a buffer flavor that implements the
:UNLINKED-SECTIONS-P () - returns non-NIL
:BUFFER-NEXT-UNLINKED-LINE (BUFFER LINE) - LINE will always be the last
line of a section, and this should return the first line of the next
section, or NIL if LINE was the last line of the last section.
:BUFFER-PREVIOUS-UNLINKED-LINE (BUFFER LINE) - analogous for the other
You'd also probably need to implement a whopper for :SAVE to expand all
the ellipses before writing the buffer out.
Yes. You also need to replace the key line in ZWEI:FIND-FILE-NEW-BUFFER
which creates a buffer of the flavor ZWEI:FILE-BUFFER with one which
creates a buffer of your flavor, perhaps in response to the canonical
type in the pathname.