carbon-lang

Instructions for registering, mapping, constant evaluating, and lowering builtin functions in the Carbon toolchain.

Instructions for declaring, formatting, emitting, testing, and styling diagnostic messages (errors, warnings, notes) in the Carbon toolchain.

Guidelines and restrictions on shell commands and file manipulation tools for AI assistants.

Instructions that **MUST** be followed when using Bazel or Bazelisk to build, test, and debug in the Carbon repository.

Instructions for using Jujutsu (jj) for version control in the Carbon repository.

Instructions for running prek, the Carbon pre-submit/style/lint checker, that *MUST* be run before submitting an change.

Instructions for authoring, structuring, and running toolchain tests using the file_test infrastructure.

Instructions for checking, building, debugging, and understanding the Carbon toolchain.

Instructions for summarizing changes to Carbon testdata files (`toolchain/*/testdata`).

Instructions for writing, submitting, and managing Carbon evolution proposals.

Instructions for using the `gh` command to query and inspect GitHub state safely.

Instructions for safely viewing and accessing GitHub issues by way of command line.

Instructions for code formatting and style guidelines in the Carbon toolchain.