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fix: .ghost bookkeeping excluded via .git/info/exclude (author edit, as-is) #21

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Merged
arko33 merged 1 commit into from
Oct 21, 2026
Merged

fix: .ghost bookkeeping excluded via .git/info/exclude (author edit, as-is) #21

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19 changes: 16 additions & 3 deletions packages/ghost/lib/shadowgit.mjs
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Original file line number Diff line number Diff line change
Expand Up @@ -27,8 +27,11 @@ export function commitSnapshot(repo, message = "ghost checkpoint") {
try { git(["read-tree", "HEAD"]); } catch { /* empty repo without HEAD */ }
// .ghost is the recorder's own bookkeeping (shadow index + patches). Staging
// it would grow every snapshot by megabytes and eventually blow maxBuffer —
// the city would silently stop growing. Exclude it at the source.
git(["add", "-A", "--", ".", ":(exclude).ghost", ":(exclude).ghost/**"]);
// the city would silently stop growing. Add it to the repo-local exclude
// (never committed, never touches the user's .gitignore) so a plain add
// skips it everywhere, including repos that do not ignore .ghost.
ensureExcluded(repo);
git(["add", "-A", "--", "."]);
const tree = git(["write-tree"]);
let parent = null;
try { parent = git(["rev-parse", "HEAD"]); } catch { /* first snapshot */ }
Expand All @@ -41,9 +44,19 @@ export function commitSnapshot(repo, message = "ghost checkpoint") {
return { sha, diff: diffOut, changedFiles: listChangedFiles(repo, parent ? parent : "4b825dc642cb6eb9a060e54bf8d69288fbee4904", sha) };
}

function ensureExcluded(repo) {
try {
const file = path.join(repo, ".git", "info", "exclude");
const text = fs.existsSync(file) ? fs.readFileSync(file, "utf8") : "";
if (text.split(/\r?\n/).includes(".ghost/")) return;
fs.mkdirSync(path.dirname(file), { recursive: true });
fs.appendFileSync(file, (text && !text.endsWith("\n") ? "\n" : "") + ".ghost/\n");
} catch { /* worktree without .git — nothing to exclude */ }
}

function listChangedFiles(repo, from, to) {
try {
const out = execFileSync("git", ["diff", "--name-only", from, to, "--", ".", ":(exclude).ghost", ":(exclude).ghost/**"], { cwd: repo, encoding: "utf8" }).trim();
const out = execFileSync("git", ["diff", "--name-only", from, to], { cwd: repo, encoding: "utf8" }).trim();
return out ? out.split("\n").map((s) => s.trim()).filter(Boolean) : [];
} catch { return []; }
}
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