Add reuse of extents for rectangular zmacs-region

I was working on adding a rectangular selection option to some of the register functions we've been working on lately, when I ran across a bug. None of the obvious functions for updating a zmacs-region will check for a change in rectangular/streamwise selection mode. It turned out this was largely due to (`zmacs-make-extent-for-region ') assuming that zmacs-region-rectangular-p reflected the current stored value of zmacs-region-extent. I changed this, and added some checks to let it reuse the existing extents in a rectangular region. (It already reused the extent in the streamwise case.) The one other change I made was for zmacs-update-region to update the internal flag for rectangular selection whenever the region is valid. Here's a patch to simple.el! _______________________________________________ XEmacs-Beta mailing list XEmacs-Beta(a)xemacs.org http://lists.xemacs.org/mailman/listinfo/xemacs-beta