feat(extmark): window scoped extmark

Co-authored-by: zeertzjq <zeertzjq@outlook.com>

runtime/lua/vim/_meta/api.lua

@@ -613,6 +613,8 @@ function vim.api.nvim_buf_line_count(buffer) end
 ---               • url: A URL to associate with this extmark. In the TUI, the
 ---                 OSC 8 control sequence is used to generate a clickable
 ---                 hyperlink to this URL.
+---               • scoped: boolean that indicates that the extmark should
+---                 only be displayed in the namespace scope. (experimental)
 --- @return integer
 function vim.api.nvim_buf_set_extmark(buffer, ns_id, line, col, opts) end
 
@@ -1982,6 +1984,13 @@ function vim.api.nvim_tabpage_set_var(tabpage, name, value) end
 --- @param win integer Window handle, must already belong to {tabpage}
 function vim.api.nvim_tabpage_set_win(tabpage, win) end
 
+--- Adds the namespace scope to the window.
+---
+--- @param window integer Window handle, or 0 for current window
+--- @param ns_id integer the namespace to add
+--- @return boolean
+function vim.api.nvim_win_add_ns(window, ns_id) end
+
 --- Calls a function with window as temporary current window.
 ---
 --- @param window integer Window handle, or 0 for current window
@@ -2032,6 +2041,12 @@ function vim.api.nvim_win_get_cursor(window) end
 --- @return integer
 function vim.api.nvim_win_get_height(window) end
 
+--- Gets all the namespaces scopes associated with a window.
+---
+--- @param window integer Window handle, or 0 for current window
+--- @return integer[]
+function vim.api.nvim_win_get_ns(window) end
+
 --- Gets the window number
 ---
 --- @param window integer Window handle, or 0 for current window
@@ -2084,6 +2099,13 @@ function vim.api.nvim_win_hide(window) end
 --- @return boolean
 function vim.api.nvim_win_is_valid(window) end
 
+--- Removes the namespace scope from the window.
+---
+--- @param window integer Window handle, or 0 for current window
+--- @param ns_id integer the namespace to remove
+--- @return boolean
+function vim.api.nvim_win_remove_ns(window, ns_id) end
+
 --- Sets the current buffer in a window, without side effects
 ---
 --- @param window integer Window handle, or 0 for current window

runtime/lua/vim/_meta/api_keysets.lua

@@ -252,6 +252,7 @@ error('Cannot require a meta file')
 --- @field ui_watched? boolean
 --- @field undo_restore? boolean
 --- @field url? string
+--- @field scoped? boolean
 --- @field _subpriority? integer
 
 --- @class vim.api.keyset.user_command