Speed up vertical-motion when screen coordinates are known

 src/indent.c (Fvertical_motion): Accept an additional argument
 CUR-COL and use it as the starting screen coordinate.
 src/window.c (window_scroll_line_based, Fmove_to_window_line): All
 callers of vertical-motion changed.

 doc/lispref/positions.texi (Screen Lines): Update the documentation of
 vertical-motion to document the new additional argument.

1 files changed, 5 insertions, 0 deletions

diff --git a/doc/lispref/ChangeLog b/doc/lispref/ChangeLog
index 3fe3d6fd6a0..0c76a6b8b34 100644
--- a/doc/lispref/ChangeLog
+++ b/doc/lispref/ChangeLog
@@ -1,3 +1,8 @@
+2015-02-09  Eli Zaretskii  <eliz@gnu.org>
+
+        * positions.texi (Screen Lines): Update the documentation of
+        vertical-motion to document the new additional argument.
+
 2015-02-06  Nicolas Petton <nicolas@petton.fr>
 
         * sequences.texi (Sequence Functions): Add documentation for