Unclear default value for unity-size and python.bytecompile in "meson setup --help" output

[radioactiveman]

Describe the bug meson setup --help prints confusing information for the options --unity-size and --python.bytecompile. It looks like the supported values are listed here instead of the default value.

options:
  --unity-size UNITY_SIZE                    Unity block size (default: (2, None, 4)).
  --python.bytecompile PYTHON.BYTECOMPILE    Whether to compile bytecode (default: (-1, 2, 0)).

To reproduce meson setup --help

Expected behavior Only one (the actual) default value should be stated here. The supported values should be printed in the first column. --optimization does it like this:

options:
  --optimization {plain,0,g,1,2,3,s}         Optimization level (default: 0).

System parameters

• What operating system: Arch Linux
• What Python version: 3.12.3
• What meson --version: 1.4.1

Additional information

• https://mesonbuild.com/Builtin-options.html#python-module
• https://mesonbuild.com/Unity-builds.html#unity-builds