On Sat, 13 Nov 1999, Ilya Zakharevich wrote:
> From: Klaus Weide <[8][EMAIL PROTECTED]>
> > (b) Tweak HText implementation in GridText.c. I assume it's enough to
> > do the collapsing/expanding in a line oriented way (not affecting
> > parts of lines, but only lines as a whole. The required basis for
> > this could be adding a 'visible' flag to each HTLine, which would
> > be set/unset in some way by user actions. [...]
>
> No need for such monstrosities. Just add a new field to HTLine, say,
> HiddenLines. If you need to collapse several lines into one, create
> an HTLine for the new line, move collapsed HTLines to HiddenLines
> field of the new line, and replace these lines by the newly created
> line. Reverse on uncollapsing.
>
> (Of course, one may need to recalculate other hashed info in struct _HText.)
Your idea may be simpler. I am not convinced it really is, given all
the places where lists of lines (and anchors) are being traversed.
Klaus
