vim-patch:8.2.0007: popup menu positioned wrong with folding in two tabs

Problem:    Popup menu positioned wrong with folding in two tabs.
Solution:   Update the cursor line height. (closes vim/vim#5353)
09dd2bb336

src/nvim/move.c

@@ -641,7 +641,7 @@ void validate_virtcol_win(win_T *wp)
 /*
  * Validate curwin->w_cline_height only.
  */
-static void validate_cheight(void)
+void validate_cheight(void)
 {
   check_cursor_moved(curwin);
   if (!(curwin->w_valid & VALID_CHEIGHT)) {

src/nvim/popupmnu.c

@@ -226,6 +226,7 @@ void pum_display(pumitem_T *array, int size, int selected, bool array_changed,
       pum_above = false;
 
       // Leave two lines of context if possible
+      validate_cheight();
       if (curwin->w_cline_row + curwin->w_cline_height - curwin->w_wrow >= 3) {
         context_lines = 3;
       } else {

src/nvim/testdir/test_ins_complete.vim

@@ -1,3 +1,5 @@
+source screendump.vim
+source check.vim
 
 " Test for insert expansion
 func Test_ins_complete()
@@ -338,3 +340,27 @@ func Test_compl_in_cmdwin()
   delcom GetInput
   set wildmenu& wildchar&
 endfunc
+
+func Test_pum_with_folds_two_tabs()
+  CheckScreendump
+
+  let lines =<< trim END
+    set fdm=marker
+    call setline(1, ['" x {{{1', '" a some text'])
+    call setline(3, range(&lines)->map({_, val -> '" a' .. val}))
+    norm! zm
+    tab sp
+    call feedkeys('2Gzv', 'xt')
+    call feedkeys("0fa", 'xt')
+  END
+
+  call writefile(lines, 'Xpumscript')
+  let buf = RunVimInTerminal('-S Xpumscript', #{rows: 10})
+  call term_wait(buf, 100)
+  call term_sendkeys(buf, "a\<C-N>")
+  call VerifyScreenDump(buf, 'Test_pum_with_folds_two_tabs', {})
+
+  call term_sendkeys(buf, "\<Esc>")
+  call StopVimInTerminal(buf)
+  call delete('Xpumscript')
+endfunc