[Feature] Add support for std args c++26/gnu++26/c++2c/gnu++2c/c++23preview

[sean-mcmanus]

Request Overview

The change would be similar to the PR that added c++23 at #434 . I could do it myself depending on the ETA your team expects to be able to do it.

The corresponding vscode-cpptools change is at https://github.com/microsoft/vscode-cpptools/pull/13608/files and microsoft/vscode-cpptools-api#60 for C/C++ extension version 1.26.0. The 6.3 version of vscode-cpptools has not yet been published to npm but should be available.

Without this change, Make Tools may incorrectly report a project using c++23 as using c++latest with MSVC mode and clang/gcc modes may report c++23 instead of c++26.

There's a CMake Tools issue at microsoft/vscode-cmake-tools#4464 .

Additional Information

No response

[sean-mcmanus]

This may not actually be needed. It's possible c++26 may already be supported (like it was with CMake Tools). I just need to confirm that and possibly do some code cleanup or handling some newer input better (see microsoft/vscode-cmake-tools#4482 ).

[sean-mcmanus]

Yeah, I've confirmed that no change is needed and I'll submit a PR to do some minor cleanup, similar to microsoft/vscode-cmake-tools#4482 .