patch 9.0.0683: cannot specify a time for :echowindow
Problem: Cannot specify a time for :echowindow.
Solution: A count can be used to specify the display time. Add
popup_findecho().
diff --git a/runtime/doc/builtin.txt b/runtime/doc/builtin.txt
index 686cc84..2ed7399 100644
--- a/runtime/doc/builtin.txt
+++ b/runtime/doc/builtin.txt
@@ -396,6 +396,7 @@
popup_dialog({what}, {options}) Number create a popup window used as a dialog
popup_filter_menu({id}, {key}) Number filter for a menu popup window
popup_filter_yesno({id}, {key}) Number filter for a dialog popup window
+popup_findecho() Number get window ID of popup for `:echowin`
popup_findinfo() Number get window ID of info popup window
popup_findpreview() Number get window ID of preview popup window
popup_getoptions({id}) Dict get options of popup window {id}