fix(ui2): wildmenu hidden behind dialog window #37684

Problem:  The wildmenu is hidden behind the dialog window with "list" in 'wildmode'.
          Global ('laststatus' set to 3) statusline is hidden behind the
          pager window.
Solution: Check wildmenumode() to adjust the dialog position when necessary.
          Ensure pager is positioned above the global statusline with 'laststus' set to 3.

runtime/lua/vim/_extui/cmdline.lua

@@ -8,6 +8,7 @@ local M = {
   srow = 0, -- Buffer row at which the current cmdline starts; > 0 in block mode.
   erow = 0, -- Buffer row at which the current cmdline ends; messages appended here in block mode.
   level = -1, -- Current cmdline level; 0 when inactive, -1 one loop iteration after closing.
+  wmnumode = 0, -- Return value of wildmenumode(), dialog position adjusted when toggled.
 }
 
 --- Set the 'cmdheight' and cmdline window height. Reposition message windows.
@@ -28,6 +29,9 @@ local function win_config(win, hide, height)
       vim.o.cmdheight = height
     end)
     ext.msg.set_pos()
+  elseif M.wmnumode ~= (M.prompt and fn.wildmenumode() or 0) then
+    M.wmnumode = (M.wmnumode == 1 and 0 or 1)
+    ext.msg.set_pos()
   end
 end
 

runtime/lua/vim/_extui/messages.lua

@@ -469,25 +469,20 @@ end
 ---@param type? 'cmd'|'dialog'|'msg'|'pager' Type of to be positioned window (nil for all).
 function M.set_pos(type)
   local function win_set_pos(win)
+    local cfg = { hide = false, relative = 'laststatus', col = 10000 }
     local texth = type and api.nvim_win_text_height(win, {}) or {}
-    local height = type and math.min(texth.all, math.ceil(o.lines * 0.5))
     local top = { vim.opt.fcs:get().msgsep or ' ', 'MsgSeparator' }
-    local border = win ~= ext.wins.msg and { '', top, '', '', '', '', '', '' } or nil
-    local config = {
-      hide = false,
-      relative = (win == ext.wins.pager or win == ext.wins.dialog) and 'editor' or 'laststatus',
-      border = border,
-      height = height,
-      row = (win == ext.wins.pager or win == ext.wins.dialog) and o.lines - o.cmdheight or 0,
-      col = 10000,
-      focusable = type == 'cmd' or nil, -- Allow entering the cmdline window.
-    }
-    api.nvim_win_set_config(win, config)
+    cfg.height = type and math.min(texth.all, math.ceil(o.lines * 0.5))
+    cfg.border = win ~= ext.wins.msg and { '', top, '', '', '', '', '', '' } or nil
+    cfg.focusable = type == 'cmd' or nil
+    cfg.row = (win == ext.wins.msg and 0 or 1) - ext.cmd.wmnumode
+    cfg.row = cfg.row - ((win == ext.wins.pager and o.laststatus == 3) and 1 or 0)
+    api.nvim_win_set_config(win, cfg)
 
     if type == 'cmd' and not cmd_on_key then
       -- Temporarily showing a full message in the cmdline, until next key press.
       local save_spill = M.virt.msg[M.virt.idx.spill][1]
-      local spill = texth.all > height and (' [+%d]'):format(texth.all - height)
+      local spill = texth.all > cfg.height and (' [+%d]'):format(texth.all - cfg.height)
       M.virt.msg[M.virt.idx.spill][1] = spill and { 0, spill } or nil
       set_virttext('msg', 'cmd')
       M.virt.msg[M.virt.idx.spill][1] = save_spill
@@ -554,7 +549,7 @@ function M.set_pos(type)
       end)
     elseif type == 'msg' then
       -- Ensure last line is visible and first line is at top of window.
-      local row = (texth.all > height and texth.end_row or 0) + 1
+      local row = (texth.all > cfg.height and texth.end_row or 0) + 1
       api.nvim_win_set_cursor(ext.wins.msg, { row, 0 })
     elseif type == 'pager' then
       if fn.getcmdwintype() ~= '' then
@@ -571,10 +566,10 @@ function M.set_pos(type)
         api.nvim_create_autocmd({ 'WinEnter', 'CmdwinEnter', 'CmdwinLeave' }, {
           callback = function(ev)
             if api.nvim_win_is_valid(ext.wins.pager) then
-              local cfg = ev.event == 'CmdwinLeave' and config
+              local config = ev.event == 'CmdwinLeave' and cfg
                 or ev.event == 'WinEnter' and { hide = true }
                 or { relative = 'win', win = 0, row = 0, col = 0 }
-              api.nvim_win_set_config(ext.wins.pager, cfg)
+              api.nvim_win_set_config(ext.wins.pager, config)
             end
             return ev.event == 'WinEnter'
           end,

runtime/lua/vim/_extui/shared.lua

@@ -33,7 +33,7 @@ local tab = 0
 ---Ensure target buffers and windows are still valid.
 function M.check_targets()
   local curtab = api.nvim_get_current_tabpage()
-  for _, type in ipairs({ 'cmd', 'dialog', 'msg', 'pager' }) do
+  for i, type in ipairs({ 'cmd', 'dialog', 'msg', 'pager' }) do
     local setopt = not api.nvim_buf_is_valid(M.bufs[type])
     if setopt then
       M.bufs[type] = api.nvim_create_buf(false, false)
@@ -50,8 +50,8 @@ function M.check_targets()
         anchor = type ~= 'cmd' and 'SE' or nil,
         hide = type ~= 'cmd' or M.cmdheight == 0 or nil,
         border = type ~= 'msg' and 'none' or nil,
-        -- kZIndexMessages < zindex < kZIndexCmdlinePopupMenu (grid_defs.h), pager below others.
-        zindex = 200 + (type == 'cmd' and 1 or type == 'pager' and -1 or 0),
+        -- kZIndexMessages < cmd zindex < kZIndexCmdlinePopupMenu (grid_defs.h), pager below others.
+        zindex = 201 - i,
         _cmdline_offset = type == 'cmd' and 0 or nil,
       })
       if tab ~= curtab and api.nvim_win_is_valid(M.wins[type]) then

test/functional/ui/cmdline2_spec.lua

@@ -13,6 +13,7 @@ describe('cmdline2', function()
     screen = Screen.new()
     screen:add_extra_attr_ids({
       [100] = { foreground = Screen.colors.Magenta1, bold = true },
+      [101] = { background = Screen.colors.Yellow, foreground = Screen.colors.Grey0 },
     })
     exec_lua(function()
       require('vim._extui').enable({})
@@ -180,6 +181,44 @@ describe('cmdline2', function()
       {16::}{15:s}{16:/f}^                                                 |
     ]])
   end)
+
+  it('dialog position is adjusted for toggled wildmenu', function()
+    exec([[
+      set wildmode=list:full,full wildoptions-=pum
+      func Foo()
+      endf
+      func Fooo()
+      endf
+    ]])
+    feed(':call Fo<C-Z>')
+    screen:expect([[
+                                                           |
+      {1:~                                                    }|*9
+      {3:                                                     }|
+      Foo()   Fooo()                                       |
+                                                           |
+      {16::}{15:call} Fo^                                             |
+    ]])
+    feed('<C-Z>')
+    screen:expect([[
+                                                           |
+      {1:~                                                    }|*8
+      {3:                                                     }|
+      Foo()   Fooo()                                       |
+                                                           |
+      {101:Foo()}{3:  Fooo()                                        }|
+      {16::}{15:call} {25:Foo}{16:()}^                                          |
+    ]])
+    feed('()')
+    screen:expect([[
+                                                           |
+      {1:~                                                    }|*9
+      {3:                                                     }|
+      Foo()   Fooo()                                       |
+                                                           |
+      {16::}{15:call} {25:Foo}{16:()()}^                                        |
+    ]])
+  end)
 end)
 
 describe('cmdline2', function()