commit 90a997987dbbe43af3c15118a35f658f0f037d1d
author Bram Moolenaar <Bram@vim.org> Wed Sep 12 21:52:18 2018 +0200
committer Bram Moolenaar <Bram@vim.org> Wed Sep 12 21:52:18 2018 +0200
tree 53f3974a235a4bc9c0a266fde3c5e86d5fde5ac6
parent 643b6140873e0e6f297df0cbca11bc1ea1f21925

patch 8.1.0372: screen updating slow when 'cursorline' is set

Problem:    Screen updating slow when 'cursorline' is set.
Solution:   Only redraw the old and new cursor line, not all lines.

src/edit.c

diff --git a/src/edit.c b/src/edit.c
index ff45bb7..72dc586 100644
--- a/src/edit.c
+++ b/src/edit.c
@@ -1966,7 +1966,7 @@
 	if (pc_status == PC_STATUS_RIGHT)
 	    ++curwin->w_wcol;
 	if (pc_status == PC_STATUS_RIGHT || pc_status == PC_STATUS_LEFT)
-	    redrawWinline(curwin->w_cursor.lnum, FALSE);
+	    redrawWinline(curwin, curwin->w_cursor.lnum, FALSE);
 	else
 #endif
 	    screen_puts(pc_bytes, pc_row - msg_scrolled, pc_col, pc_attr);
@@ -2017,7 +2017,7 @@
     if (dollar_vcol >= 0)
     {
 	dollar_vcol = -1;
-	redrawWinline(curwin->w_cursor.lnum, FALSE);
+	redrawWinline(curwin, curwin->w_cursor.lnum, FALSE);
     }
 }
 
@@ -7079,7 +7079,7 @@
 	linenr_T	lnum = spell_redraw_lnum;
 
 	spell_redraw_lnum = 0;
-	redrawWinline(lnum, FALSE);
+	redrawWinline(curwin, lnum, FALSE);
     }
 }