Actions dependent on Tab key not working in Windows due to LLVM's LineEditor class (e.g. clang-query Tab auto-completion)

[MichelleCDjunaidi]

As per #106672 (comment), most of the Tab key actions relies on GNU read-line and as a result things like clang-query's Tab auto-completion doesn't work in Windows. LLVM currently has no fallback code for this.

[llvmbot]

@llvm/issue-subscribers-clang-query

Author: None (MichelleCDjunaidi)

As per https://github.com//pull/106672#issuecomment-2326442298, most of the Tab key actions relies on GNU read-line and as a result things like clang-query's Tab auto-completion doesn't work in Windows. LLVM currently has no fallback code for this.

[AaronBallman]

This isn't specific to clang-query, but is true of anything using LLVM's LineEditor class.