variables in include path setting

[hmoffatt]

Should VSCode variables work in the include path setting?

I'm trying to set C_Cpp.default.includePath to include ${userHome}/some/path/include/**, but it's not working. If I write /home/hamish/... instead then it works.

[sean-mcmanus]

Yeah, it works for me. Can you try remove the "**" temporarily and then run the C/C++: Log Diagnostics command and look for that include path in the logging? Using "**" will cause the include paths to be removed if they aren't actually referenced. Or can you provide any more repro info?

[hmoffatt]

In the extension settings I added
${userHome}/dev/Qt5.15.12/5.15.12/gcc_64/include/QtCore and one other.

In c_cpp_properties.json I have

            "includePath": [
                "${default}",
                "${workspaceFolder}/**"
            ],

The log diagnostics command produces:

-------- Diagnostics - 24/05/2023, 18:31:05
Version: 1.15.4
Current Configuration:
{
    "name": "Linux",
    "includePath": [
        "/home/hamish/dev/trunk/src/${userHome}/dev/Qt5.15.12/5.15.12/gcc_64/include/QtCore",
        "/home/hamish/dev/trunk/src/${userHome}/dev/Qt5.15.12/5.15.12/gcc_64/include",
        "/home/hamish/dev/trunk/src/**"
    ],
    "defines": [],
    "compilerPath": "/usr/bin/clang",
    "cStandard": "c17",
    "cppStandard": "c++14",
    "intelliSenseMode": "linux-clang-x64",
    "compilerPathIsExplicit": true,
    "cStandardIsExplicit": true,
    "cppStandardIsExplicit": true,
    "intelliSenseModeIsExplicit": true,
    "compilerPathInCppPropertiesJson": "/usr/bin/clang",
    "mergeConfigurations": false,
    "browse": {
        "path": [
            "${userHome}/dev/Qt5.15.12/5.15.12/gcc_64/include/QtCore",
            "${userHome}/dev/Qt5.15.12/5.15.12/gcc_64/include",
            "${workspaceFolder}/**"
        ],
        "limitSymbolsToIncludedHeaders": true
    }
}

[hmoffatt]

It works if I use ${env:HOME} instead of ${userHome}.

Glancing at the source, I think only workspaceFolder, workspaceFolderBasename and env: may be supported, none of the other variables documented at https://code.visualstudio.com/docs/editor/variables-reference

[sean-mcmanus]

Yeah, we don't support all the variables defined in https://code.visualstudio.com/docs/editor/variables-reference . Those are not environment variables. There's a previous request at #10350 . ${HOME} works for me though, because it's an environment variable.

Oh, looks like I misread your original reference to "VSCode variables".