# HG changeset patch
# User Bram Moolenaar <Bram@vim.org>
# Date 1605550503 -3600
# Node ID 6145a1232c3a40c856a9493b6e065a9c0009299b
# Parent  040778b130ee4ab3d873eab484876cf1d4f12599
patch 8.2.1995: the popup menu can cause too much redrawing

Commit: https://github.com/vim/vim/commit/714cbe5b212abbecb578b90424d89f47142e8f25
Author: Bram Moolenaar <Bram@vim.org>
Date:   Mon Nov 16 19:12:00 2020 +0100

    patch 8.2.1995: the popup menu can cause too much redrawing

    Problem:    The popup menu can cause too much redrawing.
    Solution:   Reduce the length of the displayed text. (Yasuhiro Matsumoto,
                closes #7306)

diff --git a/src/popupmenu.c b/src/popupmenu.c
--- a/src/popupmenu.c
+++ b/src/popupmenu.c
@@ -361,6 +361,8 @@ pum_display(
 	// redo the positioning.  Limit this to two times, when there is not
 	// much room the window size will keep changing.
     } while (pum_set_selected(selected, redo_count) && ++redo_count <= 2);
+
+    pum_redraw();
 }
 
 /*
@@ -541,8 +543,23 @@ pum_redraw(void)
 			{
 			    if (st != NULL)
 			    {
-				screen_puts_len(st, (int)STRLEN(st), row, col,
-									attr);
+				int size = (int)STRLEN(st);
+				int cells = (*mb_string2cells)(st, size);
+
+				// only draw the text that fits
+				while (size > 0
+					  && col + cells > pum_width + pum_col)
+				{
+				    --size;
+				    if (has_mbyte)
+				    {
+					size -= (*mb_head_off)(st, st + size);
+					cells -= (*mb_ptr2cells)(st + size);
+				    }
+				    else
+					--cells;
+				}
+				screen_puts_len(st, size, row, col, attr);
 				vim_free(st);
 			    }
 			    col += width;
@@ -990,9 +1007,6 @@ pum_set_selected(int n, int repeat UNUSE
 	popup_hide_info();
 #endif
 
-    if (!resized)
-	pum_redraw();
-
     return resized;
 }
 
diff --git a/src/version.c b/src/version.c
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@ static char *(features[]) =
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1995,
+/**/
     1994,
 /**/
     1993,