api: Replace set_var(name, NIL) with del_var(name)

1 files changed, 19 insertions, 2 deletions

diff --git a/src/nvim/api/window.c b/src/nvim/api/window.c
index aad616c7bf..58218af09d 100644
--- a/src/nvim/api/window.c
+++ b/src/nvim/api/window.c
@@ -197,7 +197,7 @@ Object window_get_var(Window window, String name, Error *err)
   return dict_get_value(win->w_vars, name, err);
 }
 
-/// Sets a window-scoped (w:) variable. 'nil' value deletes the variable.
+/// Sets a window-scoped (w:) variable
 ///
 /// @param window The window handle
 /// @param name The variable name
@@ -212,7 +212,24 @@ Object window_set_var(Window window, String name, Object value, Error *err)
     return (Object) OBJECT_INIT;
   }
 
-  return dict_set_value(win->w_vars, name, value, err);
+  return dict_set_value(win->w_vars, name, value, false, err);
+}
+
+/// Removes a window-scoped (w:) variable
+///
+/// @param window The window handle
+/// @param name The variable name
+/// @param[out] err Details of an error that may have occurred
+/// @return The old value
+Object window_del_var(Window window, String name, Error *err)
+{
+  win_T *win = find_window_by_handle(window, err);
+
+  if (!win) {
+    return (Object) OBJECT_INIT;
+  }
+
+  return dict_set_value(win->w_vars, name, NIL, true, err);
 }
 
 /// Gets a window option value