Fix 6th line of infotext being cut off in half (#11456)

doc/lua_api.txt

@@ -2100,7 +2100,9 @@ Some of the values in the key-value store are handled specially:
 * `formspec`: Defines an inventory menu that is opened with the
               'place/use' key. Only works if no `on_rightclick` was
               defined for the node. See also [Formspec].
-* `infotext`: Text shown on the screen when the node is pointed at
+* `infotext`: Text shown on the screen when the node is pointed at.
+              Line-breaks will be applied automatically.
+              If the infotext is very long, it will be truncated.
 
 Example:
 
@@ -7189,7 +7191,7 @@ Player properties need to be saved manually.
         -- Default: false
 
         infotext = "",
-        -- By default empty, text to be shown when pointed at object
+        -- Same as infotext for nodes. Empty by default
 
         static_save = true,
         -- If false, never save this object statically. It will simply be

src/client/gameui.cpp

@@ -71,11 +71,14 @@ void GameUI::init()
 			chat_font_size, FM_Unspecified));
 	}
 
-	// At the middle of the screen
-	// Object infos are shown in this
+
+	// Infotext of nodes and objects.
+	// If in debug mode, object debug infos shown here, too.
+	// Located on the left on the screen, below chat.
 	u32 chat_font_height = m_guitext_chat->getActiveFont()->getDimension(L"Ay").Height;
 	m_guitext_info = gui::StaticText::add(guienv, L"",
-		core::rect<s32>(0, 0, 400, g_fontengine->getTextHeight() * 5 + 5) +
+		// Size is limited; text will be truncated after 6 lines.
+		core::rect<s32>(0, 0, 400, g_fontengine->getTextHeight() * 6) +
 			v2s32(100, chat_font_height *
 			(g_settings->getU16("recent_chat_messages") + 3)),
 			false, true, guiroot);