tree f69f454cbf43c0588181ec7a93313dfc6c1117db
parent 0a3a6441bc30ff3c1837562d6620c5e74317cf04
author Benno Schulenberg <bensberg@justemail.net> 1469526473 +0200
committer Benno Schulenberg <bensberg@justemail.net> 1470073273 +0200

screen: don't look at placewewant but at where we actually were and are

For horizontal scrolling, it is not the /desired/ column position that
is relevant for determining whether a line needs to be redrawn after a
cursor movement, but the /actual/ column positions before and after.

This fixes https://savannah.gnu.org/bugs/?48627,
and fixes https://savannah.gnu.org/bugs/?48629.