Today the "Show Inline Values" feature of VS Code's debugger is based on a generic implementation in the VS Code core and provides neither customisability through settings, nor extensibility via extensions.

As a consequence, it is not a perfect fit for all languages (e.g. #101797) and sometimes even shows incorrect values because it doesn't understand the scope regions of the underlying language.

This features asks for an extension API that either replaces the built-in implementation completely or allows to replace parts of the implementation with custom code.