patch 8.1.1622: wrong width if displaying a lot of lines in a popup window
Problem: Wrong width if displaying a lot of lines in a popup window.
Solution: Accurately compute the line overflow.
diff --git a/src/testdir/dumps/Test_popupwin_firstline.dump b/src/testdir/dumps/Test_popupwin_firstline.dump
index 1371297..b3b0349 100644
--- a/src/testdir/dumps/Test_popupwin_firstline.dump
+++ b/src/testdir/dumps/Test_popupwin_firstline.dump
@@ -1,10 +1,10 @@
>1+0&#ffffff0| @73
|2| @73
|3| @73
-|4| @33|3+0#0000001#ffd7ff255@4| +0#0000000#a8a8a8255| +0&#ffffff0@33
-|5| @33|4+0#0000001#ffd7ff255@1| @2| +0#0000000#0000001| +0&#ffffff0@33
-|6| @33|5+0#0000001#ffd7ff255| @3| +0#0000000#0000001| +0&#ffffff0@33
-|7| @33|6+0#0000001#ffd7ff255@4| +0#0000000#a8a8a8255| +0&#ffffff0@33
+|4| @32|3+0#0000001#ffd7ff255@4| | +0#0000000#a8a8a8255| +0&#ffffff0@33
+|5| @32|4+0#0000001#ffd7ff255@1| @3| +0#0000000#0000001| +0&#ffffff0@33
+|6| @32|5+0#0000001#ffd7ff255| @4| +0#0000000#0000001| +0&#ffffff0@33
+|7| @32|6+0#0000001#ffd7ff255@5| +0#0000000#a8a8a8255| +0&#ffffff0@33
|8| @73
|9| @73
@57|1|,|1| @10|T|o|p|
diff --git a/src/testdir/test_popupwin.vim b/src/testdir/test_popupwin.vim
index cc25976..f7579f5 100644
--- a/src/testdir/test_popupwin.vim
+++ b/src/testdir/test_popupwin.vim
@@ -1697,3 +1697,16 @@
redraw
call popup_close(winid)
endfunc
+
+func Test_popupwin_width()
+ let winid = popup_create(repeat(['short', 'long long long line', 'medium width'], 50), {
+ \ 'maxwidth': 40,
+ \ 'maxheight': 10,
+ \ })
+ for top in range(1, 20)
+ call popup_setoptions(winid, {'firstline': top})
+ redraw
+ call assert_equal(19, popup_getpos(winid).width)
+ endfor
+ call popup_clear()
+endfunc