mirror of
https://github.com/carbon-language/carbon-lang.git
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Richard Smith
455f1af2b2
Instead of running on the "current" `@` (the state at which the previous `jj` command happened to be run), intentionally trigger a working copy snapshot from `jj_prek`. Assisted-by: Claude Opus 5 via Antigravity
29 lines
1.1 KiB
Bash
Executable File
29 lines
1.1 KiB
Bash
Executable File
#!/usr/bin/env bash
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#
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# Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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# Exceptions. See /LICENSE for license information.
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# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#
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# Runs prek within a jj repository that is backed by a git repository, including
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# the case where the repository is a non-colocated jj workspace.
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set -eu
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# Map `@` to a git commit. This deliberately doesn't pass
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# `--ignore-working-copy`, so that jj first snapshots the files on disk into `@`;
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# otherwise the index built below can describe stale file contents, and hooks
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# both check the wrong thing and fail to write back their fixes.
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HEAD="$(jj show --no-patch -r @ --template 'commit_id')"
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# Find the .git directory. The working copy was snapshotted above, so this
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# doesn't need to do so again.
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export GIT_DIR="$(jj git root --ignore-working-copy)"
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# Create a git index file describing `@`.
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export GIT_INDEX_FILE="$(mktemp)"
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trap 'rm -f "$GIT_INDEX_FILE"' EXIT
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git read-tree "$HEAD"
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# Run prek with the `.git` directory and index we built earlier.
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prek run --from-ref trunk --to-ref "$HEAD"
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