Maintainer decision on the escalated ReDoS fork: use re2. The regex path
compiled agent-supplied patterns with `new RegExp` and ran them synchronously in
the shared event-loop; a catastrophic-backtracking pattern (e.g. `(a+)+$`) hung
the whole Node backend for all users (the tool is in both transports incl. the
in-app apps/server agent), and size caps do NOT bound backtracking.
Switch the regex engine to re2 (Google RE2, linear-time, no backtracking):
- `new RE2(query, caseSensitive?'g':'gi')`. RE2 extends RegExp, so eachMatch and
the zero-length-match lastIndex guard are unchanged.
- Unsupported patterns are now a CLEAN error, not a hang: RE2 throws on invalid
syntax AND on the backtracking-only features it can't do (lookaround
(?=…)/(?<=…), backreferences \1) — caught at compile and returned as a clear
tool error telling the agent to rewrite without them.
- Removed MAX_CONTAINER_TEXT + the per-container slice (re2 is linear, so it's no
longer a ReDoS defense, and truncating risked silently dropping real matches in
a long container); kept MAX_PATTERN_LENGTH as a cheap query sanity cap.
- Verified: `(a+)+$` over 50k `a` completes in ~4ms; lookaround/backref throw.
- Added re2 (^1.21.0) to packages/mcp; lockfile updated.
Reviewer DO items:
- F1 [doc]: removed the false "pass nodeId as a comment anchor" claim
(create_comment has no nodeId param — it needs a text `selection`). Fixed in
tool-specs.ts + page-search.ts (module + SearchMatch JSDoc) + client.ts; the ref
is for get_node/patch_node, and for a comment you build a unique text selection
from before+match+after.
- F2 [doc]: clarified `#<index>` refs (id-less table/cell) are accepted by get_node
but NOT patch_node (id-only).
- F3 [test]: round-trip — each match's nodeId fed to the real getNodeByRef
(attrs.id node + `#<index>` table-cell) to prove the ref format is consumable.
- F4 [test]: before/after edge-pinning (match in first 40 chars of a long
container; index 0 → before==""; container end → after=="").
- New re2 tests: catastrophic patterns complete fast; lookaround/backref → error.
mcp: tsc clean; node --test 472 passed (+5). apps/server: tsc --noEmit clean.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
mcp had its OWN drifted copy of the converter (markdown-converter.ts ~900 lines,
docmost-schema.ts ~1270 lines, markdown-document.ts) — older than the shared
package, missing the git-sync fixes AND the #293 canon. This switches mcp's
converter CORE to @docmost/prosemirror-markdown, so mcp jumps straight to the
canonical format and the drift-generating second copy is gone.
- markdown-converter.ts / markdown-document.ts / docmost-schema.ts become thin
re-export shims of the package (convertProseMirrorToMarkdown, the docmost:meta
envelope, docmostExtensions + docmostSchema=getSchema(docmostExtensions)). The
mcp-only helpers clampCalloutType/sanitizeCssColor are preserved verbatim in
the schema shim (the package doesn't expose them via its barrel). ~2170 lines
of the drifted converter/schema bodies deleted.
- collaboration.ts drops its own ~360-line marked pipeline (preprocessCallouts,
bridgeTaskLists, extractFootnotes, the footnoteRef extension) and re-points to
the package's markdownToProseMirror, keeping markdownToProseMirrorCanonical and
all the yjs/collab write glue. footnote-lex/analyze doc comments updated (they
now describe advisory legacy-syntax diagnostics, not an importer).
Schema parity verified: the package schema is a strict SUPERSET of mcp's old
schema — every node and attr mcp declared is present (the package only adds
status/pageEmbed/transclusion*/subpages.recursive/etc.), so nothing is silently
dropped on the switch. The switch actually FIXES two pre-existing mcp data-loss
bugs its own tests documented: htmlEmbed and pageBreak now round-trip (were
dropped by the old mcp converter).
Footnotes: the package assembles inline ^[body] footnotes on import (sequential
fn-N ids, identical bodies merged), so mcp's canonicalizeFootnotes is now an
idempotent no-op after it (verified). Legacy reference footnotes [^id]/[^id]:
are inert literal text (canon #2 no-backward-compat) — lossless, the text
survives verbatim.
Build hygiene: packages/mcp/build/ is now gitignored and untracked, matching the
git-sync/prosemirror-markdown convention (private package, rebuilt in CI/Docker,
so src and prod can never silently diverge). This also removes a dead untracked
build/_vendored_editor_ext/ artifact that a broad `git add` would otherwise
commit.
Dependency: packages/mcp/package.json gains @docmost/prosemirror-markdown
(workspace:*); pnpm-lock.yaml gets the matching link importer (mirrors git-sync).
mcp tests updated deliberately to the canonical forms (highlight ==, math $…$,
image <!--img-->, drawio/media discriminators, subpages/pageBreak
comments, textAlign, inline ^[…] footnotes) with strict assertions; 4 structural
safety-net round-trip tests added.
mcp: node --test 454 passed; tsc clean. package: 657 passed. git-sync: 268 passed.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
mutatePageContent wrote agent edits back by DELETING the whole Yjs fragment and
re-applying a fresh Y.Doc. Yjs is a CRDT — the editor anchors its selection to
node ids — so wiping every id made an open editor's cursor lose its anchor and
snap to the end of the document on every agent write. It was most visible on
comment anchoring (issue #152): a comment changes no text, yet the cursor jumped.
(Before commit 4201f0a3 the anchoring silently no-op'd, so the destructive write
never ran for comments — hence the regression.)
Fix: write via `updateYFragment` (y-prosemirror) — the same routine the editor
uses to sync its own edits into Yjs. It structurally diffs the new doc against
the live fragment and touches only changed nodes, preserving the ids of unchanged
ones, so the cursor stays put. This improves ALL agent write tools (text edits,
node ops, comments, replace) — minimal diff instead of full replace: less collab
noise, stable block-ids, other users' cursors no longer disrupted.
- collaboration.ts: new `applyDocToFragment` (sanitize -> PMNode.fromJSON against
a memoized docmost schema -> updateYFragment in one transact), keeping the
`findUnstorableAttr` encode diagnostic; swap the destructive write-back for it.
- package.json: `y-prosemirror` promoted to a direct dependency (was transitive).
- test: comment-cursor-stability.test.mjs — a Yjs RelativePosition (the cursor
anchor) survives both a sibling edit and a comment-mark anchoring (the old
full-replace tombstoned it -> null). 292 package tests green.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Replace the removed enterprise EE MCP (private apps/server/src/ee submodule,
license-gated /mcp route) with our docmost-mcp, vendored as an isolated ESM
workspace package and served by the server over HTTP — no enterprise license.
Backend:
- Add packages/mcp (@docmost/mcp): vendored docmost-mcp refactored into a
side-effect-free createDocmostMcpServer() factory (38 tools preserved),
stdio entry kept in stdio.ts, Streamable-HTTP session manager in http.ts.
- Add apps/server McpModule: @Post/@Get/@Delete('mcp') (served at /mcp via the
existing global-prefix exclude), @SkipTransform + reply.hijack to bridge raw
Fastify req/res into the SDK transport. The module dynamically imports the
ESM-only package from CommonJS via a Function-indirected import resolved with
require.resolve + file:// URL. Gated by the workspace ai.mcp toggle, a
service-account (MCP_DOCMOST_EMAIL/PASSWORD/API_URL) and optional MCP_TOKEN;
per-session idle eviction (MCP_SESSION_IDLE_MS).
- Drop the enterprise license check on mcpEnabled in workspace.service.
- Dockerfile: copy packages/mcp into the production image.
- .env.example: document MCP_DOCMOST_*, MCP_TOKEN, MCP_SESSION_IDLE_MS.
Frontend:
- Recreate the community "AI & MCP" workspace-settings panel (mcp-settings.tsx):
admin-only toggle on settings.ai.mcp with optimistic update, copyable
${APP_URL}/mcp URL; wired into workspace-settings page. Reuses existing i18n.
Fixes:
- Pin packages/mcp tiptap deps to 3.20.4 (matching the client) and inline
getStyleProperty, preventing a duplicate @tiptap/core@3.26.1 from leaking into
the client editor via pnpm shamefully-hoist (was breaking apps/client tsc).
claude code agent 227
vvzvlad