Merge #27223 nvim_open_tabpage

runtime/lua/vim/_meta/api.lua

@@ -1673,6 +1673,17 @@ function vim.api.nvim_load_context(dict) end
 --- @return any
 function vim.api.nvim_notify(msg, log_level, opts) end
 
+--- Opens a new tabpage.
+---
+--- @param buffer integer Buffer to open in the first window of the new tabpage.
+--- Use 0 for current buffer.
+--- @param enter boolean Enter the tabpage (make it the current tabpage).
+--- @param config vim.api.keyset.tabpage_config Configuration for the new tabpage. Keys:
+--- - after: Position to insert tabpage (default: -1; after current).
+---          0 = first, N = after Nth.
+--- @return integer # Tabpage handle of the created tabpage
+function vim.api.nvim_open_tabpage(buffer, enter, config) end
+
 --- Open a terminal instance in a buffer
 ---
 --- By default (and currently the only option) the terminal will not be

runtime/lua/vim/_meta/api_keysets.lua

@@ -437,6 +437,9 @@ error('Cannot require a meta file')
 --- @field scoped? boolean
 --- @field _subpriority? integer
 
+--- @class vim.api.keyset.tabpage_config
+--- @field after? integer
+
 --- @class vim.api.keyset.user_command
 --- @field addr? any
 --- @field bang? boolean