patch 8.2.1989: info popup triggers WinEnter and WinLeave autocommands

Problem:    Info popup triggers WinEnter and WinLeave autocommands.
Solution:   Suppress autocommands for the info popup. (closes #7296)

src/popupmenu.c

@@ -795,6 +795,10 @@ pum_set_selected(int n, int repeat UNUSED)
 		use_popup = USEPOPUP_NORMAL;
 	    else
 		use_popup = USEPOPUP_NONE;
+	    if (use_popup != USEPOPUP_NONE)
+		// don't use WinEnter or WinLeave autocommands for the info
+		// popup
+		block_autocmds();
 # endif
 	    // Open a preview window and set "curwin" to it.
 	    // 3 lines by default, prefer 'previewheight' if set and smaller.
@@ -972,6 +976,10 @@ pum_set_selected(int n, int repeat UNUSED)
 	    if (WIN_IS_POPUP(curwin))
 		// can't keep focus in a popup window
 		win_enter(firstwin, TRUE);
+# endif
+# ifdef FEAT_PROP_POPUP
+	    if (use_popup != USEPOPUP_NONE)
+		unblock_autocmds();
 # endif
 	}
 #endif

src/testdir/test_popupwin.vim

@@ -3243,6 +3243,10 @@ func Get_popupmenu_lines()
 	  call popup_show(id)
 	endif
       endfunc
+
+      " Check that no autocommands are triggered for the info popup
+      au WinEnter * if win_gettype() == 'popup' | call setline(2, 'WinEnter') | endif
+      au WinLeave * if win_gettype() == 'popup' | call setline(2, 'WinLeave') | endif
   END
   return lines
 endfunc

src/version.c

@@ -750,6 +750,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1989,
 /**/
     1988,
 /**/