patch 8.1.2292: v:mouse_winid not set on click in popup window
Problem: v:mouse_winid not set on click in popup window.
Solution: Set v:mouse_winid. (closes #5171)
diff --git a/runtime/doc/popup.txt b/runtime/doc/popup.txt
index 0dd8d1a..a74c2ad 100644
--- a/runtime/doc/popup.txt
+++ b/runtime/doc/popup.txt
@@ -863,8 +863,9 @@
Tab accept current suggestion
A mouse click arrives as <LeftMouse>. The coordinates are in |v:mouse_col|
-and |v:mouse_lnum|. The top-left screen cell of the popup is col 1, row 1
-(not counting the border).
+and |v:mouse_lnum|. |v:mouse_winid| holds the window ID, |v:mouse_win| is
+always zero. The top-left screen cell of the popup is col 1, row 1 (not
+counting the border).
Vim provides standard filters |popup_filter_menu()| and
|popup_filter_yesno()|.