Documenation issue on policy CMP0127

Usage
1

Hello!

I am confused with description of CMP0127. It says that:

requires expressions like:
"FOO MATCHES (UPPER|lower)"
to be re-written as:
"FOO MATCHES \"(UPPER|lower)\""

I’ve written CMakeLists.txt like this:

cmake_minimum_required(VERSION 3.10)
project(dependent_option)

include(CMakeDependentOption)

option(FOO "" "")
cmake_dependent_option(BAR "" "" "FOO MATCHES \"(UPPER|lower)\"" OFF)

But it still gives me warning:

$ cmake -B build
CMake Warning (dev) at /usr/share/cmake/Modules/CMakeDependentOption.cmake:89 (message):
  Policy CMP0127 is not set: cmake_dependent_option() supports full Condition
  Syntax.  Run "cmake --help-policy CMP0127" for policy details.  Use the
  cmake_policy command to set the policy and suppress this warning.
Call Stack (most recent call first):
  CMakeLists.txt:7 (cmake_dependent_option)
This warning is for project developers.  Use -Wno-dev to suppress it.