[tool.black]
# Ignore all submodules
extend-exclude = """(\
    src/doc/nomicon|\
    src/tools/cargo/|\
    src/doc/reference/|\
    src/doc/book/|\
    src/doc/rust-by-example/|\
    library/stdarch/|\
    src/doc/rustc-dev-guide/|\
    src/doc/edition-guide/|\
    src/llvm-project/|\
    src/doc/embedded-book/|\
    library/backtrace/
    )"""