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FabledGrimoire/tests/test_hook_pipefail_head.py
bvandeusenandClaude Opus 5.5 c5eeec471f
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rename(547): the plugin is grimoire — manifest, MCP key, hooks, env, skills
Step 3 of the Scribe -> Grimoire rename.

- Plugin `grimoire` in marketplace `grimoire-plugin`, MCP server key
  `grimoire`, so tools reach a session as mcp__plugin_grimoire_grimoire__*.
- hooks/scribe_* -> hooks/grimoire_*, their shell functions and the TMPDIR
  ledgers with them; SCRIBE_URL / SCRIBE_TOKEN / SCRIBE_HOOK_DIR /
  SCRIBE_LEDGER_DIRS -> GRIMOIRE_*; the project marker is `.grimoire`.
- skills/using-scribe -> using-grimoire, /grimoire:sync, stored processes
  arrive as grimoire-proc-<slug>; moment_actions names them the same way.
- Migration 0124 rewrites stored skill names (rule_moments,
  rule_moment_judgments, moment_mappings) from scribe:/scribe-proc- to
  grimoire:/grimoire-proc-, so a rule mounted on a skill keeps firing.
- Settings' install commands and MCP-only defaults, the docs and the
  tests follow.
- scripts/check_plugin.py drops the smoke event for a report-check hook
  that has no file in plugin/hooks.

Kept on purpose: the secret-sealing label, and the names that let backups
written as Scribe restore and be counted.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-22 10:52:55 -04:00

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"""Under `pipefail`, an early-exiting `head` must not void the output it kept.
The hooks run with `set -uo pipefail`. `hits=$(git grep -l … | head -4) ||
hits=""` loses its four hits whenever git grep is still writing when head
exits: SIGPIPE, a failed substitution, and the fallback wipes the result. It
only shows on big outputs, so the by-name duplicate arm goes silent for
exactly the most-duplicated names.
Two halves: the real function on a repo big enough to overflow the pipe, and
the check_plugin pattern that keeps the shape out of every hook (shown able to
fail).
"""
from __future__ import annotations
import os
import shutil
import subprocess
from pathlib import Path
import pytest
ROOT = Path(__file__).resolve().parents[1]
DEFS = ROOT / "plugin" / "hooks" / "grimoire_defs.sh"
def test_the_duplicate_arm_still_names_a_name_defined_in_thousands_of_files(tmp_path):
for tool in ("git", "bash"):
if shutil.which(tool) is None:
pytest.skip(f"{tool!r} not installed")
env = {"PATH": os.environ["PATH"], "HOME": str(tmp_path),
"GIT_AUTHOR_NAME": "t", "GIT_AUTHOR_EMAIL": "t@x",
"GIT_COMMITTER_NAME": "t", "GIT_COMMITTER_EMAIL": "t@x"}
repo = tmp_path / "repo"
repo.mkdir()
subprocess.run(["git", "init", "-q"], cwd=repo, check=True, env=env)
# ~3000 × ~60 bytes of `git grep -l` output: well past a 64 KiB pipe buffer,
# so git grep is still writing when head has its four lines.
for i in range(3000):
(repo / f"module_with_a_fairly_long_descriptive_name_{i}.py").write_text("def slug(t):\n return t\n")
subprocess.run(["git", "add", "."], cwd=repo, check=True, env=env)
subprocess.run(["git", "commit", "-q", "-m", "base"], cwd=repo, check=True, env=env)
script = f'set -uo pipefail\n. "{DEFS}"\nprintf "sym\\tslug\\n" | grimoire_local_dups "{repo}" new.py\n'
out = subprocess.run(["bash", "-c", script], capture_output=True, text=True, env=env, timeout=60)
assert out.returncode == 0, out.stderr
assert "`slug` is already defined in 4 other file(s)" in out.stdout
def test_the_lint_pattern_catches_the_shape_and_passes_the_fix():
from scripts.check_plugin import PATTERNS
pattern = next(p for p, label, _why in PATTERNS if label.startswith("early-exit consumer"))
for bad in ('hits=$(git grep -l x | head -4) || hits=""',
" | grep -m1 -v '^[[:space:]]*$') || old_first=\"\"",
'x=$(a | grep -q b) || x=""'):
assert pattern.search(bad), bad
for good in ('hits=$(git grep -l x | head -4 || true)',
'ln=$(grep -nF -m1 -- "$a" "$f" | cut -d: -f1) || ln=""'):
assert not pattern.search(good), good