🚀 go-pugleaf

When using emacs with a terminal program emulating a 132x50 vt100, I've
noticed some really poor choices in emacs' redisplay.  For example, if I have
one window which is 80 columns wide side-by-side with one that is 52 wide, and
I page forward in the 52 column one, emacs redisplays *both* windows - rather
than sending a sequence like "goto column 80, clear-to-eol, write some
characters," it's redrawing the whole line.  Similarly with things like ^U^V,
and with switching buffers.  However, if I switch the rightmost of the windows
to an empty buffer, the column is cleared without redrawing the leftmost one.

When drawing the "|"s dividing the two windows, a line of spaces followed by 
a | is sent, instead of using direct cursor positioning.

I thought it was possible to hand a vt100 a rectangle on the screen and tell
it to scroll that without affecting the characters to the right and left; that
doesn't seem to be being used.

Maybe the termcap entry I have isn't sophisticated enough; it's included
below. 

When a mode-line does not extend all the way across the screen, it is
not drawn in inverse video.

Is there any way to get the line of "|"s to be in inverse video?

		-- Jamie

j1|home|home|vt100-132-49|:do=^J:co#132:li#49:cl=49\E[;H\E[2J:sf=5\ED:le=^H:\
bs:am:cm=5\E[%i%d;%dH:nd=2\E[C:up=2\E[A:ce=3\E[K:cd=49\E[J:so=2\E[7m:\
se=2\E[m:us=2\E[4m:ue=2\E[m:md=2\E[1m:mr=2\E[7m:mb=2\E[5m:me=2\E[m:\
is=\E[1;49r\E[49;1H:rf=/usr/lib/tabset/vt100:\
rs=\E>\E[?3l\E[?4l\E[?5l\E[?7h\E[?8h:ks=\E[?1h\E=:ke=\E[?1l\E>:ku=\EOA:\
kd=\EOB:kr=\EOC:kl=\EOD:kb=^H:ho=\E[H:k1=\EOP:k2=\EOQ:k3=\EOR:k4=\EOS:pt:\
sr=5\EM:vt#3:xn:sc=\E7:rc=\E8:cs=\E[%i%d;%dr: