Commits on Apr 24, 2021

1. test tidy should ignore alternative build dir patterns …

   I need to have multiple `build` directories, such as `build`,
   `build-fuchsia`, and `build-test`. But when I'm uploading a change, I
   run `./x.py test tidy`, and if I have a `build-something` directory with
   Rust sources, I git a bunch of formatting errors.
   
   `rustfmt.toml` only ignores the directory named `build`.
   
   This change extends the patterns to also ignore `build-*` and `*-build`.
   
   As a rustc contributor, I not only build the rust compiler to develop
   new features, but I also build alternative "distributions" (using
   secondary `*-config.toml` files with different configurations),
   including:
   
   * To occasionally rebuild a version of the compiler that `rust-analyzer`
   can use to `check` source (which fixes issues in the VS Code UI, so
   changing and rebuilding the compiler does not break VS Code editing Rust
   code).
   * To build custom distributions for Fuchsia
   * To build test distributions when working on changes to `bootstrap`
   (e.g., when I recently added `rust-demangler` to distributions)

   

   richkadel committed Apr 24, 2021
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