From 239dad775b1a08c3ad8f1ba614c29cb8cb619301 Mon Sep 17 00:00:00 2001
From: Rudy Mizrahi Celekli <47457359+rudycelekli@users.noreply.github.com>
Date: Sun, 18 Oct 2026 01:24:01 -0400
Subject: [PATCH] fix(upstream): distinguish new paths from fork deletions
(#585)
* fix(upstream): distinguish new paths from fork deletions
* docs(changelog): record fix for #585
---
CHANGELOG.md | 2 ++
tests/test_upstream_triage.py | 49 ++++++++++++++++++++++++++++++-----
tools/upstream_triage.py | 27 ++++++++++++-------
3 files changed, 63 insertions(+), 15 deletions(-)
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8927cc0d..637f76c7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -194,6 +194,8 @@ per-file diff commands.
the Jobtype item and a description paragraph (fails on master), and an entity-encoded
`
` in a description that stays in the text.
+- **Upstream checks distinguish new files from fork deletions** (#585) - a path absent from the base is reported as newly added upstream instead of incorrectly treated as a deletion in the fork.
+
- **`/add-portal` includes the `.agents` prefix in generated `allowed-tools`** (#545,
`.claude/commands/add-portal.md`, `tests/test_add_portal_command.py`) - the specification template
for the new portal's `SKILL.md` frontmatter wrote `allowed-tools: Bash(bun run skills//cli/src/cli.ts *)`
diff --git a/tests/test_upstream_triage.py b/tests/test_upstream_triage.py
index de91a40a..198c9e82 100644
--- a/tests/test_upstream_triage.py
+++ b/tests/test_upstream_triage.py
@@ -71,13 +71,15 @@ class UpToDateTests(TriageRepoFixture):
class RelevanceFilterTests(TriageRepoFixture):
def test_commit_touching_only_removed_files_is_skipped(self):
- # Upstream edits a file this fork never had -> not relevant.
+ # Both start with the portal; upstream edits it while the fork drops it.
self.write("portals/removed_portal.py", "x = 1\n")
- self.commit("upstream: add removed_portal")
+ self.commit("shared: add portal")
+ self.write("portals/removed_portal.py", "x = 2\n")
+ self.commit("upstream: update portal")
self.set_upstream_to_head()
- # Fork drops back to before that commit and deletes nothing extra;
- # the file simply is not in fork HEAD.
git(self.root, "reset", "--hard", "HEAD~1")
+ git(self.root, "rm", "portals/removed_portal.py")
+ self.commit("fork: remove demo portal")
result = self.run_triage()
self.assertEqual(result.returncode, 0, result.stderr)
@@ -98,19 +100,54 @@ class RelevanceFilterTests(TriageRepoFixture):
self.assertIn("git cherry-pick", result.stdout)
def test_changelog_only_footprint_is_skipped(self):
+ self.write("portals/gone.py", "y = 1\n")
+ self.write("CHANGELOG.md", "- base\n")
+ self.commit("shared: add portal and changelog")
self.write("portals/gone.py", "y = 2\n")
self.write("CHANGELOG.md", "- did a thing\n")
self.commit("upstream: feature living in removed area + changelog")
self.set_upstream_to_head()
# Fork ships CHANGELOG.md but not the removed portal file.
git(self.root, "reset", "--hard", "HEAD~1")
- self.write("CHANGELOG.md", "- fork changelog\n")
- self.commit("fork changelog")
+ git(self.root, "rm", "portals/gone.py")
+ self.commit("fork: remove demo portal")
result = self.run_triage()
self.assertEqual(result.returncode, 0, result.stderr)
self.assertIn("changelog-only footprint in this fork", result.stdout)
+ def test_new_upstream_tool_is_worth_reviewing(self):
+ self.write("tools/new_workflow.py", "print('new workflow')\n")
+ added = self.commit("upstream: add a new workflow tool")
+ self.set_upstream_to_head()
+ git(self.root, "reset", "--hard", "HEAD~1")
+ before = git(self.root, "status", "--porcelain")
+
+ result = self.run_triage()
+
+ self.assertEqual(result.returncode, 0, result.stderr)
+ self.assertIn("**1** worth reviewing", result.stdout)
+ self.assertIn("tools/new_workflow.py", result.stdout)
+ self.assertIn(f"git cherry-pick {added}", result.stdout)
+ self.assertEqual(git(self.root, "status", "--porcelain"), before)
+ self.assertFalse((self.root / "tools/new_workflow.py").exists())
+
+ def test_new_tool_with_changelog_is_not_changelog_only(self):
+ self.write("CHANGELOG.md", "- base\n")
+ self.commit("shared: add changelog")
+ self.write("tools/new_workflow.py", "print('new workflow')\n")
+ self.write("CHANGELOG.md", "- new workflow tool\n")
+ added = self.commit("upstream: ship a new tool and changelog")
+ self.set_upstream_to_head()
+ git(self.root, "reset", "--hard", "HEAD~1")
+
+ result = self.run_triage()
+
+ self.assertEqual(result.returncode, 0, result.stderr)
+ self.assertIn("**1** worth reviewing", result.stdout)
+ self.assertIn(f"git cherry-pick {added}", result.stdout)
+ self.assertNotIn("changelog-only footprint in this fork", result.stdout)
+
class AlreadyAppliedTests(TriageRepoFixture):
def test_cherry_picked_commit_drops_off_via_patch_id(self):
diff --git a/tools/upstream_triage.py b/tools/upstream_triage.py
index 9f6a83a2..4de0f800 100755
--- a/tools/upstream_triage.py
+++ b/tools/upstream_triage.py
@@ -23,7 +23,8 @@ Two signals drive the sort:
2. Relevant to this fork? A commit that only touches files this fork deleted
(e.g. removed demo portals) is almost certainly N/A. We check each commit's
- touched paths against the working tree and flag accordingly.
+ touched paths against HEAD and the shared base: a genuinely new upstream
+ path is worth reviewing, rather than a file the fork chose to remove.
Usage: python tools/upstream_triage.py [--remote upstream] [--branch master]
Exits 0 always (a report, not a gate). Prints a note to stderr and exits 0 if
@@ -81,10 +82,10 @@ def files_touched(sha: str) -> list[str]:
return [f for f in out.splitlines() if f]
-def path_exists(path: str) -> bool:
- # ls-tree against HEAD is authoritative for "does this fork still ship it".
+def path_exists(path: str, ref: str = "HEAD") -> bool:
+ # Read committed trees, rather than uncommitted files in the working tree.
r = subprocess.run(
- ["git", "cat-file", "-e", f"HEAD:{path}"], capture_output=True
+ ["git", "cat-file", "-e", f"{ref}:{path}"], capture_output=True
)
return r.returncode == 0
@@ -154,6 +155,11 @@ def main() -> int:
fork_only = rev_list(f"{ref}..HEAD")
fork_patch_ids = {p for p in (patch_id(s) for s in fork_only) if p}
fork_subjects = {subject(s) for s in fork_only}
+ try:
+ common_base = git("merge-base", "HEAD", ref).strip()
+ except subprocess.CalledProcessError:
+ # Without shared history, absence cannot establish a deliberate deletion.
+ common_base = None
review: list[tuple[str, str, str, list[str]]] = []
skip: list[tuple[str, str, str, str]] = []
@@ -168,14 +174,17 @@ def main() -> int:
skip.append((short, sha, subj, "on the fork's won't-port list"))
continue
touched = files_touched(sha)
- present = [f for f in touched if path_exists(f)]
+ relevant = [
+ f for f in touched
+ if path_exists(f) or common_base is None or not path_exists(f, common_base)
+ ]
# A commit whose only surviving footprint is the changelog is one whose
# real change lives in files this fork removed - the code doesn't apply,
# only a doc line would. Low signal; demote it.
- substantive = [f for f in present if f != "CHANGELOG.md"]
- if touched and not present:
+ substantive = [f for f in relevant if f != "CHANGELOG.md"]
+ if touched and not relevant:
skip.append((short, sha, subj, "touches only files not in this fork"))
- elif present and not substantive:
+ elif relevant and not substantive:
skip.append((short, sha, subj, "changelog-only footprint in this fork"))
else:
review.append((short, sha, subj, substantive))
@@ -190,7 +199,7 @@ def main() -> int:
lines.append("### Worth reviewing")
if review:
lines.append("")
- lines.append("| Commit | Subject | Fork files it touches |")
+ lines.append("| Commit | Subject | Relevant files it touches |")
lines.append("|---|---|---|")
for short, sha, subj, present in review:
shown = ", ".join(f"`{p}`" for p in present[:4]) or "_(new/shared paths)_"