api: nvim_ui_attach(): Flatten ext_* options.

runtime/doc/msgpack_rpc.txt

@@ -264,13 +264,11 @@ a dictionary with these (optional) keys:
 				colors.
 				Set to false to use terminal color codes (at
 				most 256 different colors).
-	`ui_ext`		String array of "externalized" widgets.
-				Widgets in this list will not be drawn by
+	`ext_popupmenu`		Externalize the popupmenu. |ui-ext-popupmenu|
+	`ext_tabline`		Externalize the tabline. |ui-ext-tabline|
+				Externalized widgets will not be drawn by
 				Nvim; only high-level data will be published
-				in new UI event kinds. Valid names:
-					popupmenu	|ui-ext-popupmenu|
-					tabline         |ui-ext-tabline|
-				Defaults to empty.
+				in new UI event kinds.
 
 Nvim will then send msgpack-rpc notifications, with the method name "redraw"
 and a single argument, an array of screen updates (described below).  These

src/nvim/api/ui.c

@@ -173,13 +173,33 @@ void nvim_ui_set_option(uint64_t channel_id, String name,
 
 static void ui_set_option(UI *ui, String name, Object value, Error *error)
 {
+#define UI_EXT_OPTION(o, e) \
+  do { \
+    if (strequal(name.data, #o)) { \
+      if (value.type != kObjectTypeBoolean) { \
+        api_set_error(error, kErrorTypeValidation, #o " must be a Boolean"); \
+        return; \
+      } \
+      ui->ui_ext[(e)] = value.data.boolean; \
+      return; \
+    } \
+  } while (0)
+
   if (strequal(name.data, "rgb")) {
     if (value.type != kObjectTypeBoolean) {
       api_set_error(error, kErrorTypeValidation, "rgb must be a Boolean");
       return;
     }
     ui->rgb = value.data.boolean;
-  } else if (strequal(name.data, "popupmenu_external")) {
+    return;
+  }
+
+  UI_EXT_OPTION(ext_cmdline, kUICmdline);
+  UI_EXT_OPTION(ext_popupmenu, kUIPopupmenu);
+  UI_EXT_OPTION(ext_tabline, kUITabline);
+  UI_EXT_OPTION(ext_wildmenu, kUIWildmenu);
+
+  if (strequal(name.data, "popupmenu_external")) {
     // LEGACY: Deprecated option, use `ui_ext` instead.
     if (value.type != kObjectTypeBoolean) {
       api_set_error(error, kErrorTypeValidation,
@@ -187,38 +207,11 @@ static void ui_set_option(UI *ui, String name, Object value, Error *error)
       return;
     }
     ui->ui_ext[kUIPopupmenu] = value.data.boolean;
-  } else if (strequal(name.data, "ui_ext")) {
-    if (value.type != kObjectTypeArray) {
-      api_set_error(error, kErrorTypeValidation,
-                    "ui_ext must be an Array");
     return;
   }
 
-    for (size_t i = 0; i < value.data.array.size; i++) {
-      Object item = value.data.array.items[i];
-      if (item.type != kObjectTypeString) {
-        api_set_error(error, kErrorTypeValidation,
-                      "ui_ext: item must be a String");
-        return;
-      }
-      char *name = item.data.string.data;
-      if (strequal(name, "cmdline")) {
-        ui->ui_ext[kUICmdline] = true;
-      } else if (strequal(name, "popupmenu")) {
-        ui->ui_ext[kUIPopupmenu] = true;
-      } else if (strequal(name, "tabline")) {
-        ui->ui_ext[kUITabline] = true;
-      } else if (strequal(name, "wildmenu")) {
-        ui->ui_ext[kUIWildmenu] = true;
-      } else {
-        api_set_error(error, kErrorTypeValidation,
-                      "ui_ext: unknown widget: %s", name);
-        return;
-      }
-    }
-  } else {
   api_set_error(error, kErrorTypeValidation, "No such ui option");
-  }
+#undef UI_EXT_OPTION
 }
 
 static void push_call(UI *ui, char *name, Array args)

test/functional/ui/screen_basic_spec.lua

@@ -577,28 +577,10 @@ describe('nvim_ui_attach()', function()
     eq(999, eval('&lines'))
     eq(999, eval('&columns'))
   end)
-  it('"ui_ext" widgets', function()
+  it('invalid option returns error', function()
     local screen = Screen.new()
-    screen:attach({ui_ext={
-      'cmdline',
-      'popupmenu',
-      'tabline',
-      'wildmenu',
-    }})
-  end)
-  it('invalid "ui_ext" returns error', function()
-    local screen = Screen.new()
-
-    local status, rv = pcall(function() screen:attach({ui_ext={'foo'}}) end)
+    local status, rv = pcall(function() screen:attach({foo={'foo'}}) end)
     eq(false, status)
-    eq('ui_ext: unknown widget: foo', rv:match("ui_ext:.*"))
-
-    status, rv = pcall(function() screen:attach({ui_ext={'cmdline','foo'}}) end)
-    eq(false, status)
-    eq('ui_ext: unknown widget: foo', rv:match("ui_ext:.*"))
-
-    status, rv = pcall(function() screen:attach({ui_ext={'cmdline',1}}) end)
-    eq(false, status)
-    eq('ui_ext: item must be a String', rv:match("ui_ext:.*"))
+    eq('No such ui option', rv:match("No such .*"))
   end)
 end)

test/functional/ui/tabline_spec.lua

@@ -9,7 +9,7 @@ describe('ui/tabline', function()
   before_each(function()
     clear()
     screen = Screen.new(25, 5)
-    screen:attach({rgb=true, ui_ext={'tabline'}})
+    screen:attach({rgb=true, ext_tabline=true})
     screen:set_on_event_handler(function(name, data)
       if name == "tabline_update" then
         curtab, tabs = unpack(data)

test/functional/viml/completion_spec.lua

@@ -874,7 +874,7 @@ describe('ui/externalized/popupmenu', function()
   before_each(function()
     clear()
     screen = Screen.new(60, 8)
-    screen:attach({rgb=true, ui_ext={'popupmenu'}})
+    screen:attach({rgb=true, ext_popupmenu=true})
     screen:set_default_attr_ids({
       [1] = {bold=true, foreground=Screen.colors.Blue},
       [2] = {bold = true},