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dev/vendor/codex/execpolicy/examples/example.codexpolicy
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zeekay 25f1f1da4f vendor: upstream lives under vendor/, so ours is what is left
codex-rs/ is a read-only mirror of openai/codex that just-every refreshes and
we never edit. It sat at the repo root next to code-rs/, the product, and the
only thing separating them was that everyone knew. Nothing checked it.

That knowing is what makes branding endless. There are ~400 upstream-brand
literals in code-rs today and ~224 of ours, hand-placed on the same lines the
sync delta lands on, so every sync re-fights the same 17 files. You cannot fix
that while the line between "theirs" and "ours" is a convention.

vendor/codex/ makes it a boundary. Everything under vendor/ is upstream: never
branded, never edited, replaced wholesale on sync. Everything outside it is
ours and must carry our name — which is now a question a test can ask.

code-rs coupled to the mirror through exactly one line, an include_str! of
models.json, and it still does. The other 17 files are path strings.

Syncing changes by one sed: just-every's delta names codex-rs/, so rewrite the
patch paths to vendor/codex/ before applying it.
2026-08-07 21:22:34 -07:00

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# Example policy to illustrate syntax; not comprehensive and not recommended for actual use.
prefix_rule(
pattern = ["git", "reset", "--hard"],
decision = "forbidden",
justification = "destructive operation",
match = [
["git", "reset", "--hard"],
],
not_match = [
["git", "reset", "--keep"],
"git reset --merge",
],
)
prefix_rule(
pattern = ["ls"],
match = [
["ls"],
["ls", "-l"],
["ls", "-a", "."],
],
)
prefix_rule(
pattern = ["cat"],
match = [
["cat", "file.txt"],
["cat", "-n", "README.md"],
],
)
prefix_rule(
pattern = ["cp"],
decision = "prompt",
match = [
["cp", "foo", "bar"],
"cp -r src dest",
],
)
prefix_rule(
pattern = ["head"],
match = [
["head", "README.md"],
["head", "-n", "5", "CHANGELOG.md"],
],
not_match = [
["hea", "-n", "1,5p", "CHANGELOG.md"],
],
)
prefix_rule(
pattern = ["printenv"],
match = [
["printenv"],
["printenv", "PATH"],
],
not_match = [
["print", "-0"],
],
)
prefix_rule(
pattern = ["pwd"],
match = [
["pwd"],
],
)
prefix_rule(
pattern = ["which"],
match = [
["which", "python3"],
["which", "-a", "python3"],
],
)