"argsExpansion" debug property is not working anymore

[int19h]

It always behaves as "none" now, because VSCode started escaping arguments in "runInTerminal" request:
microsoft/vscode#98471

There's no way for debugpy to work around this, so until VSCode provides the functionality necessary to do it, we should disable the property in the extension (i.e. remove it from the launch.json schema).

[frankli0324]

may I ask what's the status of this issue? just wasted half an hour stuck into this.
args in launch.json still gets escaped, is this expected or not? what does it mean that "argsExpansion" always behaves as "none" now?

[int19h]

VSCode always escapes it (but only for the shells that they're aware of).

However, debugpy is not tied to VSCode, and other clients may do things differently. The true meaning of the property is basically whether debugpy allows the DAP client to handle your script arguments (e.g. by escaping them) by propagating them via the "runInTerminal" DAP request, or whether it uses its own channel where no modification is guaranteed.

Hence why it's down to the specific clients to expose the property or not, as needed.