# HG changeset patch
# User Bram Moolenaar <Bram@vim.org>
# Date 1598110203 -7200
# Node ID ebc6d07840fdafd11d7d41baff370c0c2b143fb0
# Parent  d94d2fd69d0615038e3a53e9cd9a746c570d58b4
patch 8.2.1509: vertical separator is cleared when dragging a popup window

Commit: https://github.com/vim/vim/commit/9943b3d97955ece99c747c959e0a7d493bb762bb
Author: Bram Moolenaar <Bram@vim.org>
Date:   Sat Aug 22 17:21:14 2020 +0200

    patch 8.2.1509: vertical separator is cleared when dragging a popup window

    Problem:    Vertical separator is cleared when dragging a popup window using a
                multi-byte character for the border.
    Solution:   Only clear the character before the window if it is using a
                multi-byte character. (closes #6766)

diff --git a/src/screen.c b/src/screen.c
--- a/src/screen.c
+++ b/src/screen.c
@@ -464,7 +464,8 @@ screen_line(
     // First char of a popup window may go on top of the right half of a
     // double-wide character. Clear the left half to avoid it getting the popup
     // window background color.
-    if (coloff > 0 && ScreenLines[off_to] == 0)
+    if (coloff > 0 && ScreenLines[off_to] == 0
+					     && ScreenLinesUC[off_to - 1] != 0)
     {
 	ScreenLines[off_to - 1] = ' ';
 	ScreenLinesUC[off_to - 1] = 0;
diff --git a/src/version.c b/src/version.c
--- a/src/version.c
+++ b/src/version.c
@@ -755,6 +755,8 @@ static char *(features[]) =
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1509,
+/**/
     1508,
 /**/
     1507,