patch 8.1.1406: popup_hide() and popup_show() not implemented yet
Problem: popup_hide() and popup_show() not implemented yet.
Solution: Implement the functions.
diff --git a/src/structs.h b/src/structs.h
index ca7c540..925bf03 100644
--- a/src/structs.h
+++ b/src/structs.h
@@ -2871,6 +2871,7 @@
int w_vsep_width; /* Number of separator columns (0 or 1). */
pos_save_T w_save_cursor; /* backup of cursor pos and topline */
#ifdef FEAT_TEXT_PROP
+ int w_popup_flags; // PFL_ values
int w_zindex;
int w_maxheight; // "maxheight" for popup window
int w_maxwidth; // "maxwidth" for popup window