docs(extui): rename box->msg, more->pager, prompt->dialog

Includes breaking changes to the `opts` layout. "box" doesn't really
describe anything other than a floating window so was an unwanted synonym.

runtime/doc/lua.txt

@@ -2683,12 +2683,10 @@ To enable the experimental UI (default opts shown): >lua
     require('vim._extui').enable({
      enable = true, -- Whether to enable or disable the UI.
      msg = { -- Options related to the message module.
-       ---@type 'box'|'cmd' Type of window used to place messages, either in the
-       ---cmdline or in a separate message box window with ephemeral messages.
-       pos = 'cmd',
-       box = { -- Options related to the message box window.
-         timeout = 4000, -- Time a message is visible.
-       },
+       ---@type 'cmd'|'msg' Where to place regular messages, either in the
+       ---cmdline or in a separate ephemeral message window.
+       target = 'cmd',
+       timeout = 4000, -- Time a message is visible in the message window.
      },
     })
 <
@@ -2696,15 +2694,15 @@ To enable the experimental UI (default opts shown): >lua
 There are four separate window types used by this interface:
 • "cmd": The cmdline window; also used for 'showcmd', 'showmode', 'ruler', and
   messages if 'cmdheight' > 0.
-• "box": The message box window; used for messages when 'cmdheight' == 0.
-• "more": The more-prompt window; used for |:messages| and certain messages
-  that should be shown in full.
-• "prompt": The cmdline prompt window; used for prompt messages that expect
-  user input.
+• "msg": The message window; used for messages when 'cmdheight' == 0.
+• "pager": The pager window; used for |:messages| and certain messages that
+  should be shown in full.
+• "dialog": The dialog window; used for prompt messages that expect user
+  input.
 
-These four windows are assigned the "cmdline", "msgbox", "msgmore" and
-"msgprompt" 'filetype' respectively. Use a |FileType| autocommand to configure
-any local options for these windows and their respective buffers.
+These four windows are assigned the "cmd", "msg", "pager" and "dialog"
+'filetype' respectively. Use a |FileType| autocommand to configure any local
+options for these windows and their respective buffers.
 
 Rather than a |hit-enter-prompt|, messages shown in the cmdline area that do
 not fit are appended with a `[+x]` "spill" indicator, where `x` indicates the

runtime/lua/vim/_extui.lua

@@ -8,12 +8,10 @@
 ---require('vim._extui').enable({
 ---  enable = true, -- Whether to enable or disable the UI.
 ---  msg = { -- Options related to the message module.
----    ---@type 'box'|'cmd' Type of window used to place messages, either in the
----    ---cmdline or in a separate message box window with ephemeral messages.
----    pos = 'cmd',
----    box = { -- Options related to the message box window.
----      timeout = 4000, -- Time a message is visible.
----    },
+---    ---@type 'cmd'|'msg' Where to place regular messages, either in the
+---    ---cmdline or in a separate ephemeral message window.
+---    target = 'cmd',
+---    timeout = 4000, -- Time a message is visible in the message window.
 ---  },
 ---})
 ---```
@@ -21,15 +19,14 @@
 ---There are four separate window types used by this interface:
 ---- "cmd": The cmdline window; also used for 'showcmd', 'showmode', 'ruler', and
 ---  messages if 'cmdheight' > 0.
----- "box": The message box window; used for messages when 'cmdheight' == 0.
----- "more": The more-prompt window; used for |:messages| and certain messages
+---- "msg": The message window; used for messages when 'cmdheight' == 0.
+---- "pager": The pager window; used for |:messages| and certain messages
 ---   that should be shown in full.
----- "prompt": The cmdline prompt window; used for prompt messages that expect
----   user input.
+---- "dialog": The dialog window; used for prompt messages that expect user input.
 ---
----These four windows are assigned the "cmdline", "msgbox", "msgmore" and
----"msgprompt" 'filetype' respectively. Use a |FileType| autocommand to configure
----any local options for these windows and their respective buffers.
+---These four windows are assigned the "cmd", "msg", "pager" and "dialog"
+---'filetype' respectively. Use a |FileType| autocommand to configure any local
+---options for these windows and their respective buffers.
 ---
 ---Rather than a |hit-enter-prompt|, messages shown in the cmdline area that do
 ---not fit are appended with a `[+x]` "spill" indicator, where `x` indicates the
@@ -59,6 +56,10 @@ local scheduled_ui_callback = vim.schedule_wrap(ui_callback)
 ---@nodoc
 function M.enable(opts)
   vim.validate('opts', opts, 'table', true)
+  if opts.msg then
+    vim.validate('opts.msg.pos', opts.msg.pos, 'nil', true, 'nil: "pos" moved to opts.target')
+    vim.validate('opts.msg.box', opts.msg.box, 'nil', true, 'nil: "timeout" moved to opts.msg')
+  end
   ext.cfg = vim.tbl_deep_extend('keep', opts, ext.cfg)
 
   if ext.cfg.enable == false then
@@ -84,13 +85,13 @@ function M.enable(opts)
 
   -- Use MsgArea and hide search highlighting in the cmdline window.
   -- TODO: Add new highlight group/namespaces for other windows? It is
-  -- not clear if MsgArea is wanted in the box, more and prompt windows.
+  -- not clear if MsgArea is wanted in the msg, pager and dialog windows.
   api.nvim_set_hl(ext.ns, 'Normal', { link = 'MsgArea' })
   api.nvim_set_hl(ext.ns, 'Search', { link = 'MsgArea' })
   api.nvim_set_hl(ext.ns, 'CurSearch', { link = 'MsgArea' })
   api.nvim_set_hl(ext.ns, 'IncSearch', { link = 'MsgArea' })
 
-  -- The visibility and appearance of the cmdline and message box window is
+  -- The visibility and appearance of the cmdline and message window is
   -- dependent on some option values. Reconfigure windows when option value
   -- has changed and after VimEnter when the user configured value is known.
   -- TODO: Reconsider what is needed when this module is enabled by default early in startup.
@@ -101,7 +102,7 @@ function M.enable(opts)
       api.nvim_win_set_config(ext.wins.cmd, cfg)
       -- Change message position when 'cmdheight' was or becomes 0.
       if value == 0 or ext.cmdheight == 0 then
-        ext.cfg.msg.pos = value == 0 and 'box' or ext.cmdheight == 0 and 'cmd'
+        ext.cfg.msg.target = value == 0 and 'msg' or 'cmd'
         ext.msg.prev_msg = ''
       end
       ext.cmdheight = value

runtime/lua/vim/_extui/cmdline.lua

@@ -4,7 +4,7 @@ local api, fn = vim.api, vim.fn
 local M = {
   highlighter = nil, ---@type vim.treesitter.highlighter?
   indent = 0, -- Current indent for block event.
-  prompt = false, -- Whether a prompt is active; messages are placed in the 'prompt' window.
+  prompt = false, -- Whether a prompt is active; messages are placed in the 'dialog' window.
   row = 0, -- Current row in the cmdline buffer, > 0 for block events.
   level = -1, -- Current cmdline level, 0 when inactive, -1 one loop iteration after closing.
 }
@@ -69,7 +69,7 @@ function M.cmdline_show(content, pos, firstc, prompt, indent, level, hl_id)
   M.cmdline_pos(pos)
 
   -- Clear message cmdline state; should not be shown during, and reset after cmdline.
-  if ext.cfg.msg.pos == 'cmd' and ext.msg.cmd.msg_row ~= -1 then
+  if ext.cfg.msg.target == 'cmd' and ext.msg.cmd.msg_row ~= -1 then
     ext.msg.prev_msg, ext.msg.dupe, ext.msg.cmd.msg_row = '', 0, -1
     api.nvim_buf_clear_namespace(ext.bufs.cmd, ext.ns, 0, -1)
     ext.msg.virt.msg = { {}, {} }
@@ -129,7 +129,8 @@ function M.cmdline_hide(_, abort)
     -- loop iteration. E.g. when a non-choice confirm button is pressed.
     if was_prompt and not M.prompt then
       api.nvim_buf_set_lines(ext.bufs.cmd, 0, -1, false, {})
-      api.nvim_win_set_config(ext.wins.prompt, { hide = true })
+      api.nvim_buf_set_lines(ext.bufs.dialog, 0, -1, false, {})
+      api.nvim_win_set_config(ext.wins.dialog, { hide = true })
     end
     -- Messages emitted as a result of a typed command are treated specially:
     -- remember if the cmdline was used this event loop iteration.

runtime/lua/vim/_extui/messages.lua

@@ -3,13 +3,13 @@ local ext = require('vim._extui.shared')
 
 ---@class vim._extui.messages
 local M = {
-  -- Message box window. Used for regular messages with 'cmdheight' == 0 or,
-  -- cfg.msg.pos == 'box'. Also used for verbose messages regardless of
-  -- cfg.msg.pos. Automatically resizes to the text dimensions up to a point,
+  -- Message window. Used for regular messages with 'cmdheight' == 0 or,
+  -- cfg.msg.target == 'msg'. Also used for verbose messages regardless of
+  -- cfg.msg.target. Automatically resizes to the text dimensions up to a point,
   -- at which point only the most recent messages will fit and be shown.
   -- A timer is started for each message whose callback will remove the message
   -- from the window again.
-  box = {
+  msg = {
     count = 0, -- Number of messages currently in the message window.
     width = 1, -- Current width of the message window.
     timer = nil, ---@type uv.uv_timer_t Timer that removes the most recent message.
@@ -36,12 +36,12 @@ local M = {
   },
 }
 
-function M.box:close()
+function M.msg:close()
   self.width, M.virt.msg = 1, { {}, {} }
-  M.prev_msg = ext.cfg.msg.pos == 'box' and '' or M.prev_msg
-  api.nvim_buf_clear_namespace(ext.bufs.box, -1, 0, -1)
-  if api.nvim_win_is_valid(ext.wins.box) then
-    api.nvim_win_set_config(ext.wins.box, { hide = true })
+  M.prev_msg = ext.cfg.msg.target == 'msg' and '' or M.prev_msg
+  api.nvim_buf_clear_namespace(ext.bufs.msg, -1, 0, -1)
+  if api.nvim_win_is_valid(ext.wins.msg) then
+    api.nvim_win_set_config(ext.wins.msg, { hide = true })
   end
 end
 
@@ -49,20 +49,20 @@ end
 ---
 ---@param buf integer Buffer the message was written to.
 ---@param len integer Number of rows that should be removed.
-function M.box:start_timer(buf, len)
+function M.msg:start_timer(buf, len)
   self.timer = vim.defer_fn(function()
     if self.count == 0 or not api.nvim_buf_is_valid(buf) then
-      return -- Messages moved to more or buffer was closed.
+      return -- Messages moved to pager or buffer was closed.
     end
     api.nvim_buf_set_lines(buf, 0, len, false, {})
     self.count = self.count - 1
-    -- Resize or hide message box for removed message.
+    -- Resize or hide message window for removed message.
     if self.count > 0 then
-      M.set_pos('box')
+      M.set_pos('msg')
     else
       self:close()
     end
-  end, ext.cfg.msg.box.timeout)
+  end, ext.cfg.msg.timeout)
 end
 
 --- Place or delete a virtual text mark in the cmdline or message window.
@@ -88,11 +88,11 @@ local function set_virttext(type)
     M.virt.ids[type] = nil
     M.cmd.last_col = type == 'last' and o.columns or M.cmd.last_col
   elseif #chunks > 0 then
-    local tar = type == 'msg' and ext.cfg.msg.pos or 'cmd'
+    local tar = type == 'msg' and ext.cfg.msg.target or 'cmd'
     local win = ext.wins[tar]
     local max = api.nvim_win_get_height(win)
     local erow = tar == 'cmd' and M.cmd.msg_row or nil
-    local srow = tar == 'box' and fn.line('w0', ext.wins.box) - 1 or nil
+    local srow = tar == 'msg' and fn.line('w0', ext.wins.msg) - 1 or nil
     local h = api.nvim_win_text_height(win, { start_row = srow, end_row = erow, max_height = max })
     local row = h.end_row ---@type integer
     local col = fn.virtcol2col(win, row + 1, h.end_vcol)
@@ -102,17 +102,17 @@ local function set_virttext(type)
       -- Calculate at which column to place the virt_text such that it is at the end
       -- of the last visible message line, overlapping the message text if necessary,
       -- but not overlapping the 'last' virt_text.
-      local offset = tar ~= 'box' and 0
+      local offset = tar ~= 'msg' and 0
         or api.nvim_win_get_position(win)[2] + (api.nvim_win_get_config(win).border and 1 or 0)
 
-      -- Check if adding the virt_text on this line will exceed the current 'box' width.
-      local boxwidth = math.max(M.box.width, math.min(o.columns, scol - offset + width))
-      if tar == 'box' and api.nvim_win_get_width(win) < boxwidth then
-        api.nvim_win_set_width(win, boxwidth)
-        M.box.width = boxwidth
+      -- Check if adding the virt_text on this line will exceed the current window width.
+      local maxwidth = math.max(M.msg.width, math.min(o.columns, scol - offset + width))
+      if tar == 'msg' and api.nvim_win_get_width(win) < maxwidth then
+        api.nvim_win_set_width(win, maxwidth)
+        M.msg.width = maxwidth
       end
 
-      local mwidth = tar == 'box' and M.box.width or M.cmd.last_col
+      local mwidth = tar == 'msg' and M.msg.width or M.cmd.last_col
       if scol - offset + width > mwidth then
         col = fn.virtcol2col(win, row + 1, h.end_vcol - (scol - offset + width - mwidth))
       end
@@ -174,45 +174,45 @@ end
 
 -- We need to keep track of the current message column to be able to
 -- append or overwrite messages for :echon or carriage returns.
-local col, will_more, hlopts = 0, false, { undo_restore = false, invalidate = true, priority = 1 }
---- Move message to more buffer, appending if window was already open.
-local function msg_to_more(tar)
-  if will_more then
+local col, will_pager, hlopts = 0, false, { undo_restore = false, invalidate = true, priority = 1 }
+--- Move message to pager, appending if window was already open.
+local function msg_to_pager(tar)
+  if will_pager then
     return
   end
-  will_more, M.prev_msg = true, ''
+  will_pager, M.prev_msg = true, ''
 
   vim.schedule(function()
-    local hidden = api.nvim_win_get_config(ext.wins.more).hide
+    local hidden = api.nvim_win_get_config(ext.wins.pager).hide
     local marks = api.nvim_buf_get_extmarks(ext.bufs[tar], -1, 0, -1, { details = true })
     local lines = api.nvim_buf_get_lines(ext.bufs[tar], 0, -1, false)
-    api.nvim_buf_set_lines(ext.bufs.more, hidden and 0 or -1, -1, false, lines)
-    local rows = api.nvim_buf_line_count(ext.bufs.more) - #lines
+    api.nvim_buf_set_lines(ext.bufs.pager, hidden and 0 or -1, -1, false, lines)
+    local rows = api.nvim_buf_line_count(ext.bufs.pager) - #lines
     api.nvim_buf_set_lines(ext.bufs[tar], 0, -1, false, {})
     for _, mark in ipairs(marks) do
       hlopts.end_col, hlopts.hl_group = mark[4].end_col, mark[4].hl_group
-      api.nvim_buf_set_extmark(ext.bufs.more, ext.ns, mark[2] + rows, mark[3], hlopts)
+      api.nvim_buf_set_extmark(ext.bufs.pager, ext.ns, mark[2] + rows, mark[3], hlopts)
     end
-    M.box:close()
-    M.set_pos('more')
+    M.msg:close()
+    M.set_pos('pager')
     if not hidden then
       api.nvim_command('norm! G')
     end
-    M[tar].count, col, will_more = 0, 0, false
+    M[tar].count, col, will_pager = 0, 0, false
   end)
 end
 
----@param tar 'box'|'cmd'|'more'|'prompt'
+---@param tar 'cmd'|'dialog'|'msg'|'pager'
 ---@param content MsgContent
 ---@param replace_last boolean
 ---@param append boolean
----@param more boolean? If true, route messages that exceed the target window to more window.
-function M.show_msg(tar, content, replace_last, append, more)
+---@param pager boolean? If true, route messages that exceed the target window to the pager.
+function M.show_msg(tar, content, replace_last, append, pager)
   local msg, restart, cr, dupe, count = '', false, false, 0, 0
   append = append and col > 0
 
-  if M[tar] then -- tar == 'box'|'cmd'
-    if tar == ext.cfg.msg.pos then
+  if M[tar] then -- tar == 'cmd'|'msg'
+    if tar == ext.cfg.msg.target then
       -- Save the concatenated message to identify repeated messages.
       for _, chunk in ipairs(content) do
         msg = msg .. chunk[2]
@@ -233,10 +233,10 @@ function M.show_msg(tar, content, replace_last, append, more)
   local line_count = api.nvim_buf_line_count(ext.bufs[tar])
   ---@type integer Start row after last line in the target buffer, unless
   ---this is the first message, or in case of a repeated or replaced message.
-  local row = M[tar] and count <= 1 and not will_more and (tar == 'cmd' and ext.cmd.row or 0)
+  local row = M[tar] and count <= 1 and not will_pager and (tar == 'cmd' and ext.cmd.row or 0)
     or line_count - ((replace_last or restart or cr or append) and 1 or 0)
   local curline = (cr or append) and api.nvim_buf_get_lines(ext.bufs[tar], row, row + 1, false)[1]
-  local start_row, width = row, M.box.width
+  local start_row, width = row, M.msg.width
   col = append and not cr and math.min(col, #curline) or 0
 
   -- Accumulate to be inserted and highlighted message chunks for a non-repeated message.
@@ -254,7 +254,7 @@ function M.show_msg(tar, content, replace_last, append, more)
         api.nvim_buf_set_text(ext.bufs[tar], row, col, row, ecol, { repl })
       end
       curline = api.nvim_buf_get_lines(ext.bufs[tar], row, row + 1, false)[1]
-      width = tar == 'box' and math.max(width, api.nvim_strwidth(curline)) or 0
+      width = tar == 'msg' and math.max(width, api.nvim_strwidth(curline)) or 0
 
       if chunk[3] > 0 then
         hlopts.end_col, hlopts.hl_group = end_col, chunk[3]
@@ -269,22 +269,22 @@ function M.show_msg(tar, content, replace_last, append, more)
     end
   end
 
-  if tar == 'box' then
-    api.nvim_win_set_width(ext.wins.box, width)
-    local h = api.nvim_win_text_height(ext.wins.box, { start_row = start_row })
-    if more and h.all > 1 then
-      msg_to_more(tar)
+  if tar == 'msg' then
+    api.nvim_win_set_width(ext.wins.msg, width)
+    local h = api.nvim_win_text_height(ext.wins.msg, { start_row = start_row })
+    if pager and h.all > 1 then
+      msg_to_pager(tar)
       return
     end
 
-    M.set_pos('box')
-    M.box.width = width
+    M.set_pos('msg')
+    M.msg.width = width
     if restart then
-      M.box.timer:stop()
-      M.box.timer:set_repeat(4000)
-      M.box.timer:again()
+      M.msg.timer:stop()
+      M.msg.timer:set_repeat(4000)
+      M.msg.timer:again()
     else
-      M.box:start_timer(ext.bufs.box, row - start_row + 1)
+      M.msg:start_timer(ext.bufs.msg, row - start_row + 1)
     end
   elseif tar == 'cmd' and dupe == 0 then
     fn.clearmatches(ext.wins.cmd) -- Clear matchparen highlights.
@@ -296,8 +296,9 @@ function M.show_msg(tar, content, replace_last, append, more)
       api.nvim__redraw({ flush = true, cursor = true, win = ext.wins.cmd })
     else
       local h = api.nvim_win_text_height(ext.wins.cmd, {})
-      if (more or not api.nvim_win_get_config(ext.wins.cmd).hide) and h.all > ext.cmdheight then
-        msg_to_more(tar)
+      local want_pager = pager or will_pager or not api.nvim_win_get_config(ext.wins.pager).hide
+      if want_pager and h.all > ext.cmdheight then
+        msg_to_pager(tar)
         return
       end
 
@@ -312,7 +313,7 @@ function M.show_msg(tar, content, replace_last, append, more)
 
   if M[tar] then
     -- Place (x) indicator for repeated messages. Mainly to mitigate unnecessary
-    -- resizing of the message box window, but also placed in the cmdline.
+    -- resizing of the message window, but also placed in the cmdline.
     M.virt.msg[M.virt.idx.dupe][1] = dupe > 0 and { 0, ('(%d)'):format(dupe) } or nil
     M.prev_msg, M.dupe, M[tar].count = msg, dupe, count
     set_virttext('msg')
@@ -350,16 +351,15 @@ function M.msg_show(kind, content, _, _, append)
     vim.api.nvim_feedkeys(vim.keycode('<CR>'), 'n', false)
   elseif kind == 'verbose' then
     -- Verbose messages are sent too often to be meaningful in the cmdline:
-    -- always route to box regardless of cfg.msg.pos.
-    M.show_msg('box', content, false, append)
+    -- always route to message window regardless of cfg.msg.target.
+    M.show_msg('msg', content, false, append)
   elseif ext.cmd.prompt then
-    -- Route to prompt that stays open so long as the cmdline prompt is active.
-    api.nvim_buf_set_lines(ext.bufs.prompt, 0, -1, false, { '' })
-    M.show_msg('prompt', content, true, append)
-    M.set_pos('prompt')
+    -- Route to dialog that stays open so long as the cmdline prompt is active.
+    M.show_msg('dialog', content, api.nvim_win_get_config(ext.wins.dialog).hide, append)
+    M.set_pos('dialog')
   else
     -- Set the entered search command in the cmdline (if available).
-    local tar = kind == 'search_cmd' and 'cmd' or ext.cfg.msg.pos
+    local tar = kind == 'search_cmd' and 'cmd' or ext.cfg.msg.target
     if tar == 'cmd' then
       if ext.cmdheight == 0 or (ext.cmd.level > 0 and ext.cmd.row == 0) then
         return -- Do not overwrite an active cmdline unless in block mode.
@@ -372,10 +372,10 @@ function M.msg_show(kind, content, _, _, append)
       M.msg_showcmd({})
     end
 
-    -- Typed "inspection" messages should be routed to the more window.
-    local typed_more = { 'echo', 'echomsg', 'lua_print' }
-    local more = kind == 'list_cmd' or (ext.cmd.level >= 0 and vim.tbl_contains(typed_more, kind))
-    M.show_msg(tar, content, replace_bufwrite, append, more)
+    -- Typed "inspection" messages should be routed to the pager.
+    local inspect = { 'echo', 'echomsg', 'lua_print' }
+    local pager = kind == 'list_cmd' or (ext.cmd.level >= 0 and vim.tbl_contains(inspect, kind))
+    M.show_msg(tar, content, replace_bufwrite, append, pager)
     -- Replace message for every second bufwrite message.
     replace_bufwrite = not replace_bufwrite and kind == 'bufwrite'
     -- Don't remember search_cmd message as actual message.
@@ -415,7 +415,7 @@ function M.msg_ruler(content)
 end
 
 ---@alias MsgHistory [string, MsgContent]
---- Open the message history in the more window.
+--- Open the message history in the pager.
 ---
 ---@param entries MsgHistory[]
 function M.msg_history_show(entries)
@@ -423,19 +423,19 @@ function M.msg_history_show(entries)
     return
   end
 
-  api.nvim_buf_set_lines(ext.bufs.more, 0, -1, false, {})
+  api.nvim_buf_set_lines(ext.bufs.pager, 0, -1, false, {})
   for i, entry in ipairs(entries) do
-    M.show_msg('more', entry[2], i == 1, false)
+    M.show_msg('pager', entry[2], i == 1, false)
   end
 
-  M.set_pos('more')
+  M.set_pos('pager')
 end
 
 function M.msg_history_clear() end
 
 --- Adjust dimensions of the message windows after certain events.
 ---
----@param type? 'box'|'cmd'|'more'|'prompt' Type of to be positioned window (nil for all).
+---@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 texth = type and api.nvim_win_text_height(win, {}) or 0
@@ -444,18 +444,18 @@ function M.set_pos(type)
       hide = false,
       relative = 'laststatus',
       height = height,
-      row = win == ext.wins.box and 0 or 1,
+      row = win == ext.wins.msg and 0 or 1,
       col = 10000,
     }
 
-    if type == 'box' then
+    if 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
-      api.nvim_win_set_cursor(ext.wins.box, { row, 0 })
-    elseif type == 'more' and api.nvim_win_get_config(win).hide then
-      -- Cannot leave the cmdwin to enter the "more" window, so close it.
+      api.nvim_win_set_cursor(ext.wins.msg, { row, 0 })
+    elseif type == 'pager' and api.nvim_win_get_config(win).hide then
+      -- Cannot leave the cmdwin to enter the pager, so close it.
       -- NOTE: regression w.r.t. the message grid, which allowed this. Resolving
-      -- that would require somehow bypassing textlock for the "more" window.
+      -- that would require somehow bypassing textlock for the pager.
       if fn.getcmdwintype() ~= '' then
         api.nvim_command('quit')
       end
@@ -465,18 +465,17 @@ function M.set_pos(type)
         api.nvim_set_current_win(win)
         api.nvim_create_autocmd({ 'WinEnter', 'CmdwinEnter', 'CmdwinLeave' }, {
           callback = function(ev)
-            if ev.event == 'CmdwinEnter' then
-              api.nvim_win_set_config(win, { relative = 'win', win = 0, row = 0, col = 0 })
-            elseif ev.event == 'CmdwinLeave' then
+            -- Make pager relative to cmdwin when it is opened, restore when it is closed.
+            config = ev.event == 'CmdwinLeave' and config
+              or ev.event == 'WinEnter' and { hide = true }
+              or { relative = 'win', win = 0, row = 0, col = 0 }
+            if api.nvim_win_is_valid(win) then
               api.nvim_win_set_config(win, config)
-            else
-              if api.nvim_win_is_valid(win) then
-                api.nvim_win_set_config(win, { hide = true })
-              end
-              return true
             end
+            -- Delete autocmd when a window other than the cmdwin is entered.
+            return ev.event == 'WinEnter'
           end,
-          desc = 'Hide inactive "more" window.',
+          desc = 'Hide inactive pager window.',
         })
       end)
     end

runtime/lua/vim/_extui/shared.lua

@@ -5,17 +5,15 @@ local M = {
   ns = api.nvim_create_namespace('nvim._ext_ui'),
   augroup = api.nvim_create_augroup('nvim._ext_ui', {}),
   cmdheight = -1, -- 'cmdheight' option value set by user.
-  wins = { box = -1, cmd = -1, more = -1, prompt = -1 },
-  bufs = { box = -1, cmd = -1, more = -1, prompt = -1 },
+  wins = { cmd = -1, dialog = -1, msg = -1, pager = -1 },
+  bufs = { cmd = -1, dialog = -1, msg = -1, pager = -1 },
   cfg = {
     enable = true,
     msg = { -- Options related to the message module.
-      ---@type 'box'|'cmd' Type of window used to place messages, either in the
-      ---cmdline or in a separate ephemeral message box window.
-      pos = 'cmd',
-      box = { -- Options related to the message box window.
-        timeout = 4000, -- Time a message is visible.
-      },
+      ---@type 'cmd'|'msg' Where to place regular messages, either in the
+      ---cmdline or in a separate ephemeral message window.
+      target = 'cmd',
+      timeout = 4000, -- Time a message is visible in the message window.
     },
   },
 }
@@ -33,7 +31,7 @@ local tab = 0
 --- Ensure the various buffers and windows have not been deleted.
 function M.tab_check_wins()
   local curtab = api.nvim_get_current_tabpage()
-  for _, type in ipairs({ 'box', 'cmd', 'more', 'prompt' }) do
+  for _, 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, true)
@@ -50,16 +48,16 @@ function M.tab_check_wins()
       or not api.nvim_win_get_config(M.wins[type]).zindex -- no longer floating
     then
       local top = { vim.opt.fcs:get().horiz or o.ambw == 'single' and '─' or '-', 'WinSeparator' }
-      local border = (type == 'more' or type == 'prompt') and { '', top, '', '', '', '', '', '' }
+      local border = (type == 'pager' or type == 'dialog') and { '', top, '', '', '', '', '', '' }
       local cfg = vim.tbl_deep_extend('force', wincfg, {
-        focusable = type == 'more',
+        focusable = type == 'pager',
         mouse = type ~= 'cmd' and true or nil,
         anchor = type ~= 'cmd' and 'SE' or nil,
         hide = type ~= 'cmd' or M.cmdheight == 0 or nil,
-        title = type == 'more' and 'Messages' or nil,
-        border = type == 'box' and 'single' or border or 'none',
-        -- kZIndexMessages < zindex < kZIndexCmdlinePopupMenu (grid_defs.h), 'more' below others.
-        zindex = 200 - (type == 'more' and 1 or 0),
+        title = type == 'pager' and 'Pager' or nil,
+        border = type == 'msg' and 'single' or border or 'none',
+        -- kZIndexMessages < zindex < kZIndexCmdlinePopupMenu (grid_defs.h), pager below others.
+        zindex = 200 - (type == 'pager' and 1 or 0),
         _cmdline_offset = type == 'cmd' and 0 or nil,
       })
       if tab ~= curtab and api.nvim_win_is_valid(M.wins[type]) then
@@ -77,10 +75,11 @@ function M.tab_check_wins()
     end
 
     if setopt then
-      api.nvim_buf_set_name(M.bufs[type], 'nvim.' .. type)
-      if type == 'more' then
-        -- Close more window with `q`, same as `checkhealth`
-        api.nvim_buf_set_keymap(M.bufs.more, 'n', 'q', '<Cmd>wincmd c<CR>', {})
+      local name = { cmd = 'Cmd', dialog = 'Dialog', msg = 'Msg', pager = 'Pager' }
+      api.nvim_buf_set_name(M.bufs[type], ('[%s]'):format(name[type]))
+      if type == 'pager' then
+        -- Close pager with `q`, same as `checkhealth`
+        api.nvim_buf_set_keymap(M.bufs.pager, 'n', 'q', '<Cmd>wincmd c<CR>', {})
       end
 
       -- Fire a FileType autocommand with window context to let the user reconfigure local options.
@@ -88,9 +87,9 @@ function M.tab_check_wins()
         api.nvim_set_option_value('wrap', true, { scope = 'local' })
         api.nvim_set_option_value('linebreak', false, { scope = 'local' })
         api.nvim_set_option_value('smoothscroll', true, { scope = 'local' })
-        local ft = type == 'cmd' and 'cmdline' or ('msg' .. type)
+        local ft = name[type]:sub(1, 1):lower() .. name[type]:sub(2)
         api.nvim_set_option_value('filetype', ft, { scope = 'local' })
-        local ignore = 'all' .. (type == 'more' and ',-TextYankPost' or '')
+        local ignore = 'all' .. (type == 'pager' and ',-TextYankPost' or '')
         api.nvim_set_option_value('eventignorewin', ignore, { scope = 'local' })
       end)
     end