Docs — Markdown Rendering — QA Test Cases

Source: every write path that turns a user's Markdown into a Google Doc. That's our converter (tools/docs/content.py _md_to_html → html_parser.py → emitter.py), Drive's native Markdown import (tools/drive/transfer.py _CONVERT_MIME[".md"]), and Drive's HTML import of upload_file(source_format='markdown').

Tracking: #1044. This file is the v0.9.4 release gate for Markdown rendering: v0.9.4 ships when every case below passes on screen through every entry point.

Fixtures: docs/qa/fixtures/md/. The nesting, containment, adjacency, inline-matrix, long-document and docstart/ fixtures, and the four matrix tables in this file, are generated by uv run python scripts/qa_gen_md_fixtures.py (--check reports drift); change those there, not by hand. Substitute {FOLDER_ID} (a throwaway child folder of TEST_FOLDER_ID, see "Running this suite") and {REPO} (absolute path of the checkout the server under test runs from).

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Rules

1. Playwright is the oracle. Every case is Playwright: required. The verdict comes from the rendered Doc on screen, with one screenshot saved per case per entry point. get_doc_structure and get_doc_as_markdown are supporting evidence only, never the verdict: the Markdown export writes every numbered item as 1., so it can't see a numbering restart, and it may be blind to more. "Confirmed via unit tests" or "known gap, visual only" is not a result.
2. The expected rendering is written down before a case runs (this file). It says what a reader sees: numbering, indent level, glyph, font, link target. Where the screen alone can't settle a detail, the case names the structural check that does (the Structural column or line).
3. A known failure is a FAIL. "Matches documented failure mode," "known gap," "pre-existing," and "not a new regression" are never a PASS. A failing case stays FAIL, linked to an open issue, until the fix lands and the case passes on screen.
4. Nondeterminism is a FAIL. The whole matrix runs twice (Run 1, Run 2). A case that renders differently across the two runs fails, even if both renderings look acceptable.
5. No sampling. Every case goes through every entry point in the table below, unless the case is marked N/A for an entry point with a reason. Shared code is how a path-specific wrapper bug hides.
6. Anything that looks wrong is a finding, whether or not a case below covers it. Phase 1 especially: read each document top to bottom against its source.

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Entry points

Every case runs through every entry point. EP-1 to EP-4 use our converter. EP-5 to EP-7 use Drive's native Markdown import (they upload the .md file and Drive converts it). EP-8 converts with Python-Markdown's extra extension and then uses Drive's HTML import. A rendering difference between engines is itself a finding: the same Markdown should read the same way whichever tool turned it into a Doc.

EP	Tool call (fixture F = absolute path of the .md file)	Engine
EP-1	create_doc(title="MD-<case>-EP1", content=<contents of F>, content_format="markdown", folder_id="{FOLDER_ID}")	ours
EP-2	write_doc_content(doc_id=<a blank Doc in {FOLDER_ID}>, content=<contents of F>, content_format="markdown")	ours
EP-3	create_doc_from_file(local_path=F, title="MD-<case>-EP3", folder_id="{FOLDER_ID}")	ours
EP-4	update_doc_from_file(doc_id=<a blank Doc in {FOLDER_ID}>, local_path=F)	ours
EP-5	upload_local_file(local_path=F, parent_folder_id=<empty child of {FOLDER_ID} for EP-5>, convert=True)	Drive Markdown import
EP-6	upload_local_folder(local_path=<a temp dir holding only F>, parent_folder_id=<empty child of {FOLDER_ID} for EP-6>, convert=True)	Drive Markdown import
EP-7	sync_folder(local_path=<a temp dir holding only F>, folder_id=<empty child of {FOLDER_ID} for EP-7>, direction="upload", convert_markdown=True)	Drive Markdown import
EP-8	upload_file(name="<case>.md", content=<contents of F>, source_format="markdown", folder_id="{FOLDER_ID}", convert_to_doc=True)	Python-Markdown extra + Drive HTML import

EP-5, EP-6 and EP-7 each get their own empty child folder: these tools skip a file whose converted Doc already exists in the target folder (skip_if_exists defaults to True), so a shared folder would turn a later entry point's render into a skipped.

Not an entry point: no tool inserts Markdown at an index in an existing Doc (insert_doc_text takes plain text). The "insert at an index" state in #1044 is therefore N/A; if such a tool is added, it joins this table.

Parameter variants that only some entry points take:

• autolink_urls=False (EP-1 to EP-4 only; the Drive engines have no such switch): run md-links.md a second time with it. Cases LK-05 and LK-06 then expect plain, unlinked text; every other links case is unchanged.
• Images with a local path or drive: source (IM-04 to IM-06): EP-5 to EP-8 don't resolve them, so those cells expect whatever Drive does with an unresolvable image reference. Record what's on screen; a broken-image icon or literal ![...](...) text is a FAIL for that engine.

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What correct looks like in a Google Doc

Markdown describes HTML, and Docs has no direct equivalent for some constructs. These conventions turn "renders correctly" into something checkable. They follow the converter's documented design (docs/design/markdown-support.md, docs/design/blockquote-representation.md) where one exists.

#	Construct	Expected on screen	Structural check when the screen is ambiguous
C1	ATX/Setext heading level N	Docs "Heading N" style (font size and weight of that named style)	get_doc_structure: namedStyleType == HEADING_N
C2	Bullet list, levels 0/1/2	Glyphs ● / ○ / ■, each level indented one step further	bullet.nestingLevel = 0/1/2; contiguous same-type items of one Markdown list share one listId (a bullet run nested in a numbered list is its own Docs list)
C3	Numbered list, levels 0/1/2	1. 2. … / a. b. … / i. ii. …; numbering never restarts inside one Markdown list, including after a nested block	contiguous same-type items share one listId; the screen is the verdict for the number shown, since a nested block of the other type is a separate Docs list
C4	Task item	Bullet item whose text starts with ☐ (unchecked) or ☑ (checked); no literal [ ]/[x]	—
C5	Inline code	Courier New on exactly the code characters	textStyle.weightedFontFamily.fontFamily == "Courier New" on that run only
C6	Code block (fenced or indented)	One Courier New block; each source line on its own visual line; leading indentation and blank lines kept; no Markdown inside it interpreted	one paragraph (lines joined by soft breaks), all runs Courier New
C7	Blockquote, depth N	Indented N steps with a gray left border; content inside keeps its own formatting (lists stay lists, headings stay headings)	paragraphStyle.indentStart = 36pt × N and borderLeft set
C8	Thematic break	A visible horizontal line across the page; never an empty-looking gap	—
C9	Hard break (two trailing spaces, \)	Line break inside the same paragraph: no extra blank line, no paragraph spacing between the two lines	one paragraph containing a \v (soft line break)
C10	Soft break (a plain newline inside a paragraph)	The lines join into one paragraph, separated by a space	one paragraph
C11	Image	The image itself is visible at its natural size (or scaled to page width); alt text is not shown as visible text	inlineObjectElement present
C12	Link	Link-styled text (blue, underlined) whose target is the Markdown URL	hover or textStyle.link.url
C13	Table	A Docs table, header row bold, cell text and inline formatting intact; column alignment from :--/:-:/--: applied to the cells of that column	tableCells[].content[].paragraph.paragraphStyle.alignment
C14	Block inside a list item (paragraph, code, quote, table, heading)	Shown under the item, indented to the item's text, not as a new top-level block and not as literal Markdown; the list continues after it (next item keeps the list's numbering and nesting)	the screen is the verdict: the next item shows the continued number or glyph; it shares the preceding items' listId when they're the same type
C15	Empty paragraph spacing	No visible empty paragraph that the source doesn't imply. The known collapsed blank paragraph before each table (docs/known-limitations.md, "Blank paragraph before every table") must stay invisible	—

Decisions where CommonMark/GFM and what a user means disagree, approved by the maintainer on 2026-10-17. Each is the expected behavior for this plan; changing one changes the expected rendering of the cases that cite it.

• D1 — nesting width. A list marker indented at least 2 spaces (or one tab) further than the previous item's marker nests under that item, whatever the parent's marker width. CommonMark requires the child to reach the parent's content column, so 1. A followed by - a1 (2 spaces) doesn't nest under CommonMark, but that is how models and people write sub-bullets, and #1044's own example expects it to nest.
• D2 — a table starts its own block. A pipe table directly under a paragraph, list item or quote line (no blank line) renders as a separate table after that block, not as text joined to it.
• D3 — YAML front matter is not shown. A leading ----delimited YAML block is omitted from the Doc (docs/design/markdown-support.md currently calls it "acceptable" that it renders as a rule; that is a FAIL under this plan).

Anything CommonMark/GFM permits that the converter deliberately won't support goes into docs/known-limitations.md, tied to an open issue, and its cases stay FAIL until a decision changes the expected rendering here.

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Running this suite

1. Server and slot. Use a server running the code under test with LOCAL_FILE_ACCESS=full (EP-3 to EP-7 are local-only tools). Use an OAuth identity, or a service account with a Shared Drive {FOLDER_ID}.
2. Throwaway folder. Create a child folder of TEST_FOLDER_ID named QA-MD-<date>-run<N> and use it as {FOLDER_ID}. Everything this suite creates goes there. Trash the folder after the results are recorded.
3. Placeholders. md-images.md contains {QA_IMAGE_LOCAL_PATH} and {QA_IMAGE_DRIVE_ID}. Copy the fixture to docs/qa/fixtures/md/syntax/md-images.local.md (next to the original, so IM-05's relative path still resolves the same way), substitute the absolute path of docs/qa/fixtures/qa-fixture-pixel.png and the Drive ID of an uploaded copy of it, and use the copy. *.local.md under docs/qa/fixtures/ is ignored by version control, so the substituted copy (it holds a resource ID) can't be committed by accident.
4. One render per fixture per entry point. Each syntax fixture holds many small cases, each under its own ### <ID> — <description> heading, so one render covers them all and a failure still points at one construct. Phase 1 documents and the document-boundary files (docstart/) are one case per file.
5. Screenshots. Open the Doc at https://docs.google.com/document/d/<id>/edit and take one screenshot per case, scrolled so the case's heading and its full content are in view. Name it docs/qa/screenshots/md/<run>/<EP>/<case>.png (the screenshots/ tree is gitignored; keep the files until every issue filed from the run has them attached). Follow the Playwright mutex in run.md §"Coordinating Playwright across parallel shards", and verify the account first per §"Verifying Playwright is signed into the right account".
6. Order. Phase 1 first, and file its failures before starting Phase 2 (#1044, "obvious problems first"). Then Phase 2, then the document-state cases.
7. Determinism. Repeat the whole matrix as Run 2 in a fresh folder. Compare each case's Run 2 screenshot with Run 1.
8. Recording. Write the per-case × per-entry-point grid to docs/qa/results/<date>-markdown.md (rows: case IDs; columns: EP-1 to EP-8; cells ✅, ❌ with the issue number, or N/A with the reason). Under each TC below, add one summary line: **Result (<date>) ❌ FAIL — <passed>/<total> case×EP cells pass; failures: #…**. A TC is ✅ PASS only when every cell of every case in it passes in both runs.
9. Group. docs/qa/operations.yaml run_group with group: docs_markdown runs this file.

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Phase 1 — Realistic documents

Documents of the kind AI clients produce, written the way a model writes them (2- and 3-space nesting, numbered steps with sub-bullets, bold lead-ins, tables, code). For each: render it, then read the Doc on screen top to bottom against the source, as a user would. Every construct follows the conventions above. The checklist names what's most likely to go wrong in that document; it doesn't limit what counts as a finding.

TC-MD001: Meeting notes ⚠️ destructive

Prompt Playwright: required

Render docs/qa/fixtures/md/realistic/r01-meeting-notes.md through EP-1 to EP-8.

Checks - The Date/Attendees/Facilitator lines: each label bold. Under C10 the three source lines join into one paragraph (no blank lines between them in the source); that is expected, not a finding. - Agenda: items numbered 1–4 with no restart; the 3-space sub-bullets under items 1 and 2 nest at level 1 (○), and no - shows as text. - The two-line blockquote with the attribution line: one quote, left border, both lines inside it, italic/bold intact. - Decisions table: 3 columns, bold header, every cell's text intact. - Action items: ☐/☑ glyphs, no literal [ ]/[x]; the bold names stay bold. - The closing italic line is italic.

Result (2026-10-18) ❌ FAIL — 0/8 case×EP cells pass, in both runs; failures: #1071, #1093, #1056, #1098, #1101, #1102. Grid: results/2026-10-18-markdown.md.

TC-MD002: Project plan ⚠️ destructive

Prompt Playwright: required

Render docs/qa/fixtures/md/realistic/r02-project-plan.md through EP-1 to EP-8.

Checks - Goals: 1–3 numbered with no restart after the 3-space sub-bullets; each goal's bold lead-in bold. - Phase 1 list: 1–4 with a nested numbered list (a. b. c.) under item 3, and item 4 numbered 4. - Phase 2: bullets with a nested level under "Usability tests". - Timeline table: four rows, en-dash date ranges intact. - **30%** bold in the overview.

Result (2026-10-18) ❌ FAIL — 0/8 case×EP cells pass, in both runs; failures: #1071, #1093, #1101, #1102. Grid: results/2026-10-18-markdown.md.

TC-MD003: Spec / PRD ⚠️ destructive

Prompt Playwright: required

Render docs/qa/fixtures/md/realistic/r03-spec-prd.md through EP-1 to EP-8.

Checks - The --- under the metadata block renders as a horizontal line (C8), not a Setext heading (there's a blank line above it). - Section headings "1. Problem", "4.1 Functional": headings, not list items. - Requirements table: the Priority column is centered (:--------:), ID and Requirement left-aligned. - http code block: monospace, blank line inside it kept, JSON line intact. - Appendix links: both link to their URLs; the titled link shows no title text.

Result (2026-10-18) ❌ FAIL — 0/8 case×EP cells pass, in both runs; failures: #1093, #1095, #1096, #1101, #1102. Grid: results/2026-10-18-markdown.md.

TC-MD004: README ⚠️ destructive

Prompt Playwright: required

Render docs/qa/fixtures/md/realistic/r04-readme.md through EP-1 to EP-8.

Checks - The badge (a linked image) shows as an image and links to the CI URL. - Each fenced block (bash, python) is one monospace block; Python indentation and the blank line between definitions kept. - Configuration table: backticked values monospace inside cells. - Usage notes: 1–4 numbered, with the fenced code block under item 3 (C14) and item 4 numbered 4. - The > **Note:** blockquote spans both source lines, with "Note:" bold. - © renders.

Result (2026-10-18) ❌ FAIL — 0/8 case×EP cells pass, in both runs; failures: #1094, #1093, #1099, #1101, #1102. EP-8 rendering changed between runs (Rule 4). Grid: results/2026-10-18-markdown.md.

TC-MD005: Status report ⚠️ destructive

Prompt Playwright: required

Render docs/qa/fixtures/md/realistic/r05-status-report.md through EP-1 to EP-8.

Checks - Emoji in headings (🟢 🟡) render inside the heading style. - "Mitigation:" bullet has two nested bullets at level 1 (2-space indentation). - Performance table: three right-aligned numeric columns. - Asks: numbered 1–2.

Result (2026-10-18) ❌ FAIL — 0/8 case×EP cells pass, in both runs; failures: #1071, #1095, #1093, #1101, #1102. Grid: results/2026-10-18-markdown.md.

TC-MD006: How-to with numbered steps and code ⚠️ destructive

Prompt Playwright: required

Render docs/qa/fixtures/md/realistic/r06-howto.md through EP-1 to EP-8.

Checks - Steps: numbered 1–5 with no restart, although each step holds a fenced code block (loose list, code inside items, C14). - Each code block sits under its step, indented to the step text, in monospace; no literal `` fences. - Step 3's second paragraph ("Wait until…") and its second code block stay inside step 3. - Step 4's sub-bullets nest under step 4. -http://localhost:8000` is a link. - Troubleshooting: the bold lead-in paragraphs are bold, and the OS bullet list follows.

Result (2026-10-18) ❌ FAIL — 0/8 case×EP cells pass, in both runs; failures: #1094, #1072, #1071, #1056, #1093, #1101, #1102. Grid: results/2026-10-18-markdown.md.

TC-MD007: Comparison with tables ⚠️ destructive

Prompt Playwright: required

Render docs/qa/fixtures/md/realistic/r07-comparison.md through EP-1 to EP-8.

Checks - "At a glance" table: empty top-left header cell; provider columns centered; ✅/❌ emoji in cells. - Scoring table: Weight/A/B/C right-aligned; the bold "Weighted total" row bold in every cell. - Each provider's Pros / Cons bold paragraphs followed by their own bullet lists (separate lists).

Result (2026-10-18) ❌ FAIL — 0/8 case×EP cells pass, in both runs; failures: #1095, #1093, #1101, #1102. Grid: results/2026-10-18-markdown.md.

TC-MD008: Research summary with quotes and links ⚠️ destructive

Prompt Playwright: required

Render docs/qa/fixtures/md/realistic/r08-research-summary.md through EP-1 to EP-8.

Checks - Key findings: 1–3 numbered; finding 1's text continues onto a second source line and joins into one item (C10); item 2's nested bullets at level 1; item 3 numbered 3. - Two separate one-paragraph quotes, then a nested quote (depth 2) followed by a depth-1 attribution line. - The bare URL in "Related reading" is a link. - The data table's two numeric columns right-aligned.

Result (2026-10-18) ❌ FAIL — 0/8 case×EP cells pass, in both runs; failures: #1071, #1093, #1098, #1056, #1095, #1101, #1102. Grid: results/2026-10-18-markdown.md.

TC-MD009: Changelog ⚠️ destructive

Prompt Playwright: required

Render docs/qa/fixtures/md/realistic/r09-changelog.md through EP-1 to EP-8.

Checks - Version headings [2.4.0] - 2026-10-15 show as headings in which "2.4.0" links to its compare URL: the reference definitions at the bottom make [2.4.0] a shortcut reference link (CommonMark). No brackets shown, and the three definition lines at the bottom aren't shown at all. - The fenced code block nested in the "Added" bullet stays under that bullet. - "Breaking:" bold.

Result (2026-10-18) ❌ FAIL — 0/8 case×EP cells pass, in both runs; failures: #1094, #1093, #1101, #1102. Grid: results/2026-10-18-markdown.md.

TC-MD010: Checklist-heavy task plan ⚠️ destructive

Prompt Playwright: required

Render docs/qa/fixtures/md/realistic/r10-task-plan.md through EP-1 to EP-8.

Checks - Nested task items at level 1 under "Accessibility pass" and "Performance budget met", each with its own ☐/☑. - Release candidate: numbered task items 1–4 (C3 + C4), with nested task bullets under item 3 and item 4 numbered 4. - The blockquote with a bold first line and a bullet list inside it: the list stays a list inside the quote (C7). - 5% → 20% → 50% → 100% bold, arrows intact.

Result (2026-10-18) ❌ FAIL — 0/8 case×EP cells pass, in both runs; failures: #1071, #1056, #1101, #1102. Grid: results/2026-10-18-markdown.md.

TC-MD011: Incident postmortem ⚠️ destructive

Prompt Playwright: required

Render docs/qa/fixtures/md/realistic/r11-incident-postmortem.md through EP-1 to EP-8.

Checks - The bold-label metadata lines join per C10. - Timeline table and Action items table intact; pool_size × replicas monospace inside its cell. - The yaml code block keeps its indentation and comments. - Lessons: 1–2 numbered; three nested bullets under item 2.

Result (2026-10-18) ❌ FAIL — 0/8 case×EP cells pass, in both runs; failures: #1071, #1093, #1101, #1102. EP-8 rendering changed between runs (Rule 4). Grid: results/2026-10-18-markdown.md.

TC-MD012: Interview guide (numbered in numbered) ⚠️ destructive

Prompt Playwright: required

Render docs/qa/fixtures/md/realistic/r12-interview-guide.md through EP-1 to EP-8.

Checks - Prompts: 1–3 at level 0 with a.–c. at level 1 under each (3-space indentation), no restart of the level-0 numbers. - "What good looks like": a bullet with two nested bullets at level 1. - Scorecard table with empty cells: all 6 rows and 5 columns present. - "After the interview": numbered 1–3, "one hour" bold. - résumé renders.

Result (2026-10-18) ❌ FAIL — 0/8 case×EP cells pass, in both runs; failures: #1071, #1093, #1101, #1102. Grid: results/2026-10-18-markdown.md.

TC-MD013: API reference ⚠️ destructive

Prompt Playwright: required

Render docs/qa/fixtures/md/realistic/r13-api-reference.md through EP-1 to EP-8.

Checks - Paragraphs that are only inline code (`GET /orders`) render as monospace text in a normal paragraph. - The bash block keeps its backslash line continuation; the json block its indentation. - Body list: items with two nested bullets at level 1. - Query-parameter table: the Required column centered.

Result (2026-10-18) ❌ FAIL — 0/8 case×EP cells pass, in both runs; failures: #1095, #1071, #1097, #1098, #1056, #1093, #1101, #1102. EP-8 rendering changed between runs (Rule 4). Grid: results/2026-10-18-markdown.md.

TC-MD014: Study notes ⚠️ destructive

Prompt Playwright: required

Render docs/qa/fixtures/md/realistic/r14-study-notes.md through EP-1 to EP-8.

Checks - Raft section: numbered 1–3 with nested bullets; the bullet whose text continues on an indented second source line joins into one item. - Italic variables (f, n) italic; ⌊5/2⌋ renders. - The table with an empty top-left header cell. - Questions: numbered 1–3.

Result (2026-10-18) ❌ FAIL — 0/8 case×EP cells pass, in both runs; failures: #1071, #1093, #1101, #1102. Grid: results/2026-10-18-markdown.md.

TC-MD015: Travel itinerary ⚠️ destructive

Prompt Playwright: required

Render docs/qa/fixtures/md/realistic/r15-travel-itinerary.md through EP-1 to EP-8.

Checks - Each day: numbered list with 3-space nested bullets, no restart (Thursday 1–4, Friday 1–2). - Saturday's bullets with a nested level under "Afternoon". - Packing task list, budget table with right-aligned amounts and a bold total row. - Accented Portuguese names render.

Result (2026-10-18) ❌ FAIL — 0/8 case×EP cells pass, in both runs; failures: #1071, #1097, #1095, #1101, #1102. Grid: results/2026-10-18-markdown.md.

TC-MD016: Planning notes (the #1044 report document) ⚠️ destructive

Prompt Playwright: required

Render docs/qa/fixtures/md/realistic/r16-planning-notes.md through EP-1 to EP-8.

Checks - Agenda: items 1, 2, 3, 4 at level 0 (no restart after the sub-bullets), each with its 2-space sub-bullets nested at level 1 (D1). No literal - text anywhere. - Prep tasks: ☐/☑ glyphs. - The un-languaged fenced block shows 1. Q4 results etc. as literal monospace lines, not a list. - Logistics table intact.

---

Result (2026-10-18) ❌ FAIL — 0/8 case×EP cells pass, in both runs; failures: #1071, #1093, #1100, #1101, #1102. Grid: results/2026-10-18-markdown.md.

Phase 2 — Syntax coverage

Each TC renders one fixture; the cases are the ### sections inside it. "Expected" is what a reader sees, per the conventions above.

TC-MD101: Headings ⚠️ destructive

Prompt Playwright: required

Render docs/qa/fixtures/md/syntax/md-headings.md through EP-1 to EP-8.

Case	Expected
HD-01	Six headings, Heading 1 to Heading 6, in decreasing size
HD-02	A normal paragraph reading "####### Seven hashes stay a paragraph"
HD-03	Heading 2 "Closed heading" and Heading 3 "Closed with extra hashes"; no trailing # shown
HD-04	A paragraph "#hashtag stays a paragraph"
HD-05	Heading 1 "Setext level one", Heading 2 "Setext level two"; no ===/--- shown
HD-06	One Heading 2 with "bold" bold, "italic" italic, "code" Courier New, "link" linked; the rest plain heading text
HD-07	A paragraph "A paragraph line." then a Heading 2 "Heading right after paragraph"
HD-08	A paragraph "# Not a heading" (the backslash not shown)

TC-MD102: Emphasis and strikethrough ⚠️ destructive

Prompt Playwright: required

Render docs/qa/fixtures/md/syntax/md-emphasis.md through EP-1 to EP-8.

Case	Expected
EM-01	Both "italic" words italic
EM-02	Both "bold" words bold
EM-03	All three phrases bold and italic
EM-04	First line bold throughout, "italic inside" also italic; second line italic throughout, "bold inside" also bold
EM-05	"bold" and "italic" styled inside their words; snake_case_name plain with underscores shown
EM-06	"struck through" with a line through it; "bold struck" bold and struck
EM-07	Literal stars shown, nothing italic
EM-08	One paragraph, all bold, the two source lines joined by a space (C10)

TC-MD103: Inline code ⚠️ destructive

Prompt Playwright: required

Render docs/qa/fixtures/md/syntax/md-inline-code.md through EP-1 to EP-8.

Case	Expected
IC-01	"make test" Courier New, rest of the sentence in the body font
IC-02	"a b" and "ticks`" in Courier New with the backticks shown
IC-03	"bold code" bold + Courier New; "italic code" italic + Courier New; "code" Courier New immediately followed by bold "bold"; bold "bold" immediately followed by Courier New "code"
IC-04	All three spans literal in Courier New: no bold, no link, no HTML interpretation
IC-05	"start" and "end" Courier New, the middle text plain
IC-06	One paragraph with "only_code_here()" in Courier New (C5; not required to look like a code block)

TC-MD104: Code blocks ⚠️ destructive

Prompt Playwright: required

Render docs/qa/fixtures/md/syntax/md-code-blocks.md through EP-1 to EP-8.

Case	Expected
CB-01	One Courier New block, two lines, the 4-space indent of return kept; the language tag not shown
CB-02	One Courier New block, two lines
CB-03	One Courier New block "tilde fenced block"
CB-04	Paragraph, then a Courier New block of two lines (the 4 leading spaces not shown)
CB-05	One Courier New block with one empty line between lines 1 and 3 and two empty lines before line 6
CB-06	The long line in Courier New, wrapping at the page edge; nothing cut off
CB-07	Four literal lines in Courier New: no heading, list, bold, or table
CB-08	YAML with 0/2/4-space indents kept
CB-09	The inner ``` lines shown literally around "inner fence is literal"
CB-10	Paragraph "A paragraph line.", then the code block (a fence may interrupt a paragraph)

TC-MD105: List markers and numbering ⚠️ destructive

Prompt Playwright: required

Render docs/qa/fixtures/md/syntax/md-lists-markers.md through EP-1 to EP-8.

Case	Expected	Structural
LM-01	Three separate 2-item bullet lists (a blank line plus a marker change starts a new list)	three listIds
LM-02	1. 2. 3.	—
LM-03	1. 2. 3. (an ordered list; no literal 1) text)	—
LM-04	3. 4. 5.	—
LM-05	1. 2. 3.	—
LM-06	1. to 11., two-digit numbers aligned with the rest	—
LM-07	Two separate one-item bullet lists	two listIds
LM-08	A one-item bullet list, then a one-item numbered list "1."	—

TC-MD106: Nesting widths × list-type combinations ⚠️ destructive

Prompt Playwright: required

Render docs/qa/fixtures/md/syntax/md-lists-nesting.md through EP-1 to EP-8.

Sixteen cases, LN-01 to LN-16: every combination of indent width (2 spaces, 3 spaces, 4 spaces, tab; D1) and parent/child type (bullet in bullet, bullet in numbered, numbered in bullet, numbered in numbered), each three levels deep, then back to level 1, then back to level 0 twice.

Every case expects the same shape:

Line	Level	Glyph if the level is bullets	Number if the level is numbered
Top one	0	●	1.
Child one	1	○	a.
Grandchild one	2	■	i.
Grandchild two	2	■	ii.
Child two	1	○	b.
Top two	0	●	2.
Top three	0	●	3.

No literal - or 1. text anywhere. Level 0 and level 2 have the parent's type; level 1 the child's.

Structural: nestingLevel 0/1/2 as in the table. Contiguous same-type items share one listId: in the same-type cases (bullet in bullet, numbered in numbered) all seven items do; in the mixed cases the level-1 items are a separate Docs list, so listId can't show continuation there. The numbers on screen (b., 2., 3.) are the verdict for continuation in every case.

TC-MD107: Loose lists and blocks inside list items ⚠️ destructive

Prompt Playwright: required

Render docs/qa/fixtures/md/syntax/md-lists-blocks.md through EP-1 to EP-8.

Case	Expected
LB-01	Three bullets
LB-02	Three bullets (still a bulleted list; extra spacing between items is fine)
LB-03	Numbered 1. 2. 3.
LB-04	Item 1 with its second paragraph indented under it (C14), then item 2.
LB-05	Item 1, the code block under it (C6 + C14), then item 2.
LB-06	Bullet, the quote under it (C7 + C14), then the next bullet in the same list
LB-07	Item 1, the 3×2 table under it (C13 + C14), then item 2.
LB-08	A bullet whose text is a Heading 1 "Heading inside an item", then a plain bullet, one list
LB-09	Item 1 with two nested bullets (level 1), then item 2.

TC-MD108: List boundaries ⚠️ destructive

Prompt Playwright: required

Render docs/qa/fixtures/md/syntax/md-lists-boundaries.md through EP-1 to EP-8.

Case	Expected
LX-01	Paragraph "Things to bring:" then a 2-item bullet list
LX-02	Paragraph "Steps:" then a numbered list 1. 2.
LX-03	Heading 4 then a 2-item bullet list
LX-04	One bullet whose text is "Last item Paragraph after the list without a blank line." (lazy continuation; CommonMark)
LX-05	Two separate bullet lists (two listIds); the comment not shown
LX-06	List 1. 2., the paragraph, then a new list 1. 2.
LX-07	A bullet list, then a separate numbered list starting at 1.
LX-08	1., the code block under it, then 2. and 3.
LX-09	1., then an unindented code block, then a new numbered list starting at 2. (the source says 2.)

TC-MD109: Task lists ⚠️ destructive

Prompt Playwright: required

Render docs/qa/fixtures/md/syntax/md-tasks.md through EP-1 to EP-8.

Case	Expected
TK-01	☐ Unchecked task, ☑ Checked task, ☑ Checked with uppercase X
TK-02	☐ Parent task; level 1 ☑ Child done, ☐ Child open; level 2 ☐ Grandchild open
TK-03	One list: ☐ A task, plain "A plain bullet" (no glyph), ☑ Another task
TK-04	Numbered 1. ☐ First…, 2. ☑ Second…, 3. Plain numbered item
TK-05	☐ then the task text with bold, code and link styling
TK-06	Two plain bullets with "[link-looking]" and "[]" shown literally

TC-MD110: Blockquotes ⚠️ destructive

Prompt Playwright: required

Render docs/qa/fixtures/md/syntax/md-blockquotes.md through EP-1 to EP-8.

Case	Expected
BQ-01	One quoted paragraph (C7, depth 1)
BQ-02	Two quoted paragraphs, both depth 1
BQ-03	"Outer level." depth 1, "Inner level." depth 2, "Third level." depth 3
BQ-04	Inside the quote: paragraph, 2-item bullet list, 2-item numbered list 1. 2.
BQ-05	Inside the quote: paragraph and a Courier New code block
BQ-06	Inside the quote: a Heading 2, then a paragraph
BQ-07	One quoted paragraph containing both lines joined by a space
BQ-08	Quoted paragraph with each inline style intact
BQ-09	Two separate quotes

TC-MD111: Links ⚠️ destructive

Prompt Playwright: required

Render docs/qa/fixtures/md/syntax/md-links.md through EP-1 to EP-8, and md-links.md again through EP-1 to EP-4 with autolink_urls=False.

Case	Expected	autolink_urls=False
LK-01	"the docs" links to /docs	same
LK-02	"the titled docs" links to /titled; no title text visible	same
LK-03	Three links, to /ref-a, /collapsed, /shortcut; definition lines not shown	same
LK-04	"https://example.com/angle" linked; no angle brackets shown	same
LK-05	Both bare URLs linked; the trailing period after /end is not part of the link	both plain text
LK-06	"www.example.com/www" linked (GFM extended www. autolink)	plain text
LK-07	Both addresses link to mailto:team@example.com	first linked, second plain
LK-08	Both bold and linked	same
LK-09	Both spans Courier New, not linked	same
LK-10	Heading 4 with "link" linked	same
LK-11	Links keep the full query string and the closing ) of (disambiguation)	same
LK-12	"the guide" links to ./guide.md as written (relative) and "an anchor" links to the LK-01 heading or is dropped as text, not left pointing nowhere (docs/design/heading-anchor-resolution.md)	same

TC-MD112: Images ⚠️ destructive

Prompt Playwright: required

Render the placeholder-substituted copy of docs/qa/fixtures/md/syntax/md-images.md (see "Running this suite" step 3) through EP-1 to EP-8.

Case	Expected
IM-01	The image, on its own line (C11)
IM-02	One paragraph: "Text before", the image inline, "text after"
IM-03	The image
IM-04	The 1×1 fixture pixel embedded; the call's images result reports success
IM-05	The fixture pixel, with the path resolved relative to the .md file's own directory (EP-3/EP-4 read a file; a README's relative image is relative to the README). For EP-1/EP-2 (content string, no file) N/A
IM-06	The fixture pixel embedded from Drive
IM-07	The image, linked to /linked-image
IM-08	The image, no visible alt text
IM-09	A bullet with the image inline at the end of its text; a 2×2 table with the image inside the body cell

TC-MD113: Tables ⚠️ destructive

Prompt Playwright: required

Render docs/qa/fixtures/md/syntax/md-tables.md through EP-1 to EP-8.

Case	Expected	Structural
TB-01	3×2 table, bold header	—
TB-02	Column 1 left, column 2 centered, column 3 right, in every row including the header	cell paragraph alignment START / CENTER / END
TB-03	Each cell shows its style: bold, italic, struck, Courier New, linked, and the mixed cell with all three	run styles per cell
TB-04	Cells "a | b" in Courier New showing the pipe; "x | y" plain showing the pipe; the table stays 2 columns	2 columns
TB-05	Empty cells empty; the table stays 3 columns	—
TB-06	3 columns throughout: the short row padded with empty cells, the long row's 4th cell dropped (GFM)	3 columns
TB-07	Heading 4, then the table	—
TB-08	The paragraph, then the table (D2)	—
TB-09	8 columns, all text visible (wrapping in cells is fine)	—
TB-10	2 columns, header Name/Score, Score right-aligned	—
TB-11	Two separate one-column tables	2 tables
TB-12	The long text wraps inside its cell	—

TC-MD114: Breaks and thematic breaks ⚠️ destructive

Prompt Playwright: required

Render docs/qa/fixtures/md/syntax/md-breaks-rules.md through EP-1 to EP-8.

Case	Expected	Structural
BR-01	One paragraph: "This sentence is written across three source lines but is one paragraph." (C10)	1 paragraph
BR-02	"Line one with two trailing spaces" and "Line two" on consecutive lines of one paragraph, no gap (C9)	1 paragraph with \v
BR-03	Same as BR-02; no backslash shown	1 paragraph with \v
BR-04	Paragraph, a horizontal line (C8), paragraph	—
BR-05	Same as BR-04	—
BR-06	Same as BR-04	—
BR-07	A Heading 2 "This line becomes a level-two heading"; no line	HEADING_2
BR-08	Same as BR-04	—
BR-09	Two paragraphs with normal paragraph spacing, no extra empty paragraphs	2 paragraphs

TC-MD115: Escapes and entities ⚠️ destructive

Prompt Playwright: required

Render docs/qa/fixtures/md/syntax/md-escapes.md through EP-1 to EP-8.

Case	Expected
ES-01	All 32 punctuation characters shown once each, no backslashes, nothing formatted
ES-02	"$12" and "$120" with no backslashes (#213)
ES-03	Literal stars and underscores, nothing italic or bold
ES-04	Three plain paragraphs: "- not a bullet", "1. not a numbered item", "# not a heading"
ES-05	& < > " © — (a non-breaking space) © ☃
ES-06	The sentence exactly as written, with < > & shown
ES-07	Backslashes kept: C:\Users\name\file.txt and a\b

TC-MD116: Inline HTML ⚠️ destructive

Prompt Playwright: required

Render docs/qa/fixtures/md/syntax/md-inline-html.md through EP-1 to EP-8.

CommonMark passes raw HTML through, and every entry point turns HTML into a Doc, so the HTML's meaning is the expected rendering. A tag the converter decides not to support becomes a known limitation tied to an open issue; its case stays FAIL.

Case	Expected
HT-01	bold, bold, italic, italic, underlined, struck, struck; no tags shown
HT-02	"2" subscript; "2" superscript
HT-03	"Line one" and "Line two" on consecutive lines of one paragraph (C9)
HT-04	"HTML link" linked
HT-05	A paragraph with the div's text
HT-06	"Visible beforevisible after."; no comment text
HT-07	"Ctrl" and "C" in a key style or plain (no tags shown); "highlighted" with a highlight

TC-MD117: Unicode ⚠️ destructive

Prompt Playwright: required

Render docs/qa/fixtures/md/syntax/md-unicode.md through EP-1 to EP-8.

Case	Expected
UN-01	Emoji render; "🎉 here" bold; the ZWJ sequence 👩‍💻 shows as one glyph; three bullets
UN-02	Japanese, Chinese and Korean text intact
UN-03	Both lines shown right-to-left, characters intact
UN-04	Both é forms look identical; the stacked accents render
UN-05	The no-break, thin and ideographic spaces kept (no line break inside "100 km")
UN-06	Exactly "bold after three emoji" bold, exactly "code after" Courier New, exactly "link after" linked: no style shifted by a character (UTF-16 offsets, #358)
UN-07	Heading 4 with the globe; flag emoji in the table cells

---

Phase 2 — Matrices

TC-MD201: Containment matrix ⚠️ destructive

Prompt Playwright: required

Render docs/qa/fixtures/md/syntax/md-containment.md through EP-1 to EP-8.

Every block construct (paragraph, heading, bullet list, numbered list, task list, code block, blockquote, table, image, rule) inside every container that can hold it: a bullet item and a numbered item at levels 0, 1 and 2, a blockquote, and a nested blockquote. Contained content is indented 4 spaces per list level, so a failure here isolates containment from the indent-width cases in TC-MD106. Blank lines appear only where CommonMark needs them (around a contained paragraph, table or image), so most cases are tight lists; TC-MD107 covers loose ones.

A list contained in a list item nests one level deeper than the item and uses that level's glyph (C2/C3); every other contained block follows C14.

Not expressible, so not in the matrix: - Any block inside a table cell: GFM table cells hold inline content only. Inline content and images in cells are covered by TC-MD113 (TB-03) and TC-MD112 (IM-09). - A list item at level 3 or deeper: covered by nesting depth in TC-MD106, not containment.

Case	Block	Container	Expected
CT-01	paragraph	bullet item, level 0	"Container item", then a plain paragraph "Plain paragraph text." indented under it as part of that item, then "Sibling after" as the next bullet at level 0, in the same list
CT-02	heading	bullet item, level 0	"Container item", then a Heading 4 "Inner heading" indented under it as part of that item, then "Sibling after" as the next bullet at level 0, in the same list
CT-03	bullet list	bullet item, level 0	"Container item", then a nested bullet list (Bullet A, Bullet B) one level deeper, with that level's glyph indented under it as part of that item, then "Sibling after" as the next bullet at level 0, in the same list
CT-04	numbered list	bullet item, level 0	"Container item", then a nested numbered list (Number A, Number B) one level deeper, with that level's numbering style (C3) indented under it as part of that item, then "Sibling after" as the next bullet at level 0, in the same list
CT-05	task list	bullet item, level 0	"Container item", then a nested task list (☐ Task A, ☑ Task B) one level deeper indented under it as part of that item, then "Sibling after" as the next bullet at level 0, in the same list
CT-06	code block	bullet item, level 0	"Container item", then a monospace code block "code line" indented under it as part of that item, then "Sibling after" as the next bullet at level 0, in the same list
CT-07	blockquote	bullet item, level 0	"Container item", then a quote (indent + left border) "Quoted line" indented under it as part of that item, then "Sibling after" as the next bullet at level 0, in the same list
CT-08	table	bullet item, level 0	"Container item", then a 2x2 table (bold header K/V, row k1/v1) indented under it as part of that item, then "Sibling after" as the next bullet at level 0, in the same list
CT-09	image	bullet item, level 0	"Container item", then the image indented under it as part of that item, then "Sibling after" as the next bullet at level 0, in the same list
CT-10	rule	bullet item, level 0	"Container item", then a horizontal rule indented under it as part of that item, then "Sibling after" as the next bullet at level 0, in the same list
CT-11	paragraph	bullet item, level 1	"Container item", then a plain paragraph "Plain paragraph text." indented under it as part of that item, then "Sibling after" back at level 1 and "Top after" at level 0, continuing the outer list
CT-12	heading	bullet item, level 1	"Container item", then a Heading 4 "Inner heading" indented under it as part of that item, then "Sibling after" back at level 1 and "Top after" at level 0, continuing the outer list
CT-13	bullet list	bullet item, level 1	"Container item", then a nested bullet list (Bullet A, Bullet B) one level deeper, with that level's glyph indented under it as part of that item, then "Sibling after" back at level 1 and "Top after" at level 0, continuing the outer list
CT-14	numbered list	bullet item, level 1	"Container item", then a nested numbered list (Number A, Number B) one level deeper, with that level's numbering style (C3) indented under it as part of that item, then "Sibling after" back at level 1 and "Top after" at level 0, continuing the outer list
CT-15	task list	bullet item, level 1	"Container item", then a nested task list (☐ Task A, ☑ Task B) one level deeper indented under it as part of that item, then "Sibling after" back at level 1 and "Top after" at level 0, continuing the outer list
CT-16	code block	bullet item, level 1	"Container item", then a monospace code block "code line" indented under it as part of that item, then "Sibling after" back at level 1 and "Top after" at level 0, continuing the outer list
CT-17	blockquote	bullet item, level 1	"Container item", then a quote (indent + left border) "Quoted line" indented under it as part of that item, then "Sibling after" back at level 1 and "Top after" at level 0, continuing the outer list
CT-18	table	bullet item, level 1	"Container item", then a 2x2 table (bold header K/V, row k1/v1) indented under it as part of that item, then "Sibling after" back at level 1 and "Top after" at level 0, continuing the outer list
CT-19	image	bullet item, level 1	"Container item", then the image indented under it as part of that item, then "Sibling after" back at level 1 and "Top after" at level 0, continuing the outer list
CT-20	rule	bullet item, level 1	"Container item", then a horizontal rule indented under it as part of that item, then "Sibling after" back at level 1 and "Top after" at level 0, continuing the outer list
CT-21	paragraph	bullet item, level 2	"Container item", then a plain paragraph "Plain paragraph text." indented under it as part of that item, then "Sibling after" at level 2, "Mid after" at level 1, "Top after" at level 0, continuing the outer list
CT-22	heading	bullet item, level 2	"Container item", then a Heading 4 "Inner heading" indented under it as part of that item, then "Sibling after" at level 2, "Mid after" at level 1, "Top after" at level 0, continuing the outer list
CT-23	bullet list	bullet item, level 2	"Container item", then a nested bullet list (Bullet A, Bullet B) one level deeper, with that level's glyph indented under it as part of that item, then "Sibling after" at level 2, "Mid after" at level 1, "Top after" at level 0, continuing the outer list
CT-24	numbered list	bullet item, level 2	"Container item", then a nested numbered list (Number A, Number B) one level deeper, with that level's numbering style (C3) indented under it as part of that item, then "Sibling after" at level 2, "Mid after" at level 1, "Top after" at level 0, continuing the outer list
CT-25	task list	bullet item, level 2	"Container item", then a nested task list (☐ Task A, ☑ Task B) one level deeper indented under it as part of that item, then "Sibling after" at level 2, "Mid after" at level 1, "Top after" at level 0, continuing the outer list
CT-26	code block	bullet item, level 2	"Container item", then a monospace code block "code line" indented under it as part of that item, then "Sibling after" at level 2, "Mid after" at level 1, "Top after" at level 0, continuing the outer list
CT-27	blockquote	bullet item, level 2	"Container item", then a quote (indent + left border) "Quoted line" indented under it as part of that item, then "Sibling after" at level 2, "Mid after" at level 1, "Top after" at level 0, continuing the outer list
CT-28	table	bullet item, level 2	"Container item", then a 2x2 table (bold header K/V, row k1/v1) indented under it as part of that item, then "Sibling after" at level 2, "Mid after" at level 1, "Top after" at level 0, continuing the outer list
CT-29	image	bullet item, level 2	"Container item", then the image indented under it as part of that item, then "Sibling after" at level 2, "Mid after" at level 1, "Top after" at level 0, continuing the outer list
CT-30	rule	bullet item, level 2	"Container item", then a horizontal rule indented under it as part of that item, then "Sibling after" at level 2, "Mid after" at level 1, "Top after" at level 0, continuing the outer list
CT-31	paragraph	numbered item, level 0	"Container item", then a plain paragraph "Plain paragraph text." indented under it as part of that item, then "Sibling after" numbered 2. (numbering continues)
CT-32	heading	numbered item, level 0	"Container item", then a Heading 4 "Inner heading" indented under it as part of that item, then "Sibling after" numbered 2. (numbering continues)
CT-33	bullet list	numbered item, level 0	"Container item", then a nested bullet list (Bullet A, Bullet B) one level deeper, with that level's glyph indented under it as part of that item, then "Sibling after" numbered 2. (numbering continues)
CT-34	numbered list	numbered item, level 0	"Container item", then a nested numbered list (Number A, Number B) one level deeper, with that level's numbering style (C3) indented under it as part of that item, then "Sibling after" numbered 2. (numbering continues)
CT-35	task list	numbered item, level 0	"Container item", then a nested task list (☐ Task A, ☑ Task B) one level deeper indented under it as part of that item, then "Sibling after" numbered 2. (numbering continues)
CT-36	code block	numbered item, level 0	"Container item", then a monospace code block "code line" indented under it as part of that item, then "Sibling after" numbered 2. (numbering continues)
CT-37	blockquote	numbered item, level 0	"Container item", then a quote (indent + left border) "Quoted line" indented under it as part of that item, then "Sibling after" numbered 2. (numbering continues)
CT-38	table	numbered item, level 0	"Container item", then a 2x2 table (bold header K/V, row k1/v1) indented under it as part of that item, then "Sibling after" numbered 2. (numbering continues)
CT-39	image	numbered item, level 0	"Container item", then the image indented under it as part of that item, then "Sibling after" numbered 2. (numbering continues)
CT-40	rule	numbered item, level 0	"Container item", then a horizontal rule indented under it as part of that item, then "Sibling after" numbered 2. (numbering continues)
CT-41	paragraph	numbered item, level 1	"Container item", then a plain paragraph "Plain paragraph text." indented under it as part of that item, then "Sibling after" numbered b. at level 1 and "Top after" numbered 2. at level 0
CT-42	heading	numbered item, level 1	"Container item", then a Heading 4 "Inner heading" indented under it as part of that item, then "Sibling after" numbered b. at level 1 and "Top after" numbered 2. at level 0
CT-43	bullet list	numbered item, level 1	"Container item", then a nested bullet list (Bullet A, Bullet B) one level deeper, with that level's glyph indented under it as part of that item, then "Sibling after" numbered b. at level 1 and "Top after" numbered 2. at level 0
CT-44	numbered list	numbered item, level 1	"Container item", then a nested numbered list (Number A, Number B) one level deeper, with that level's numbering style (C3) indented under it as part of that item, then "Sibling after" numbered b. at level 1 and "Top after" numbered 2. at level 0
CT-45	task list	numbered item, level 1	"Container item", then a nested task list (☐ Task A, ☑ Task B) one level deeper indented under it as part of that item, then "Sibling after" numbered b. at level 1 and "Top after" numbered 2. at level 0
CT-46	code block	numbered item, level 1	"Container item", then a monospace code block "code line" indented under it as part of that item, then "Sibling after" numbered b. at level 1 and "Top after" numbered 2. at level 0
CT-47	blockquote	numbered item, level 1	"Container item", then a quote (indent + left border) "Quoted line" indented under it as part of that item, then "Sibling after" numbered b. at level 1 and "Top after" numbered 2. at level 0
CT-48	table	numbered item, level 1	"Container item", then a 2x2 table (bold header K/V, row k1/v1) indented under it as part of that item, then "Sibling after" numbered b. at level 1 and "Top after" numbered 2. at level 0
CT-49	image	numbered item, level 1	"Container item", then the image indented under it as part of that item, then "Sibling after" numbered b. at level 1 and "Top after" numbered 2. at level 0
CT-50	rule	numbered item, level 1	"Container item", then a horizontal rule indented under it as part of that item, then "Sibling after" numbered b. at level 1 and "Top after" numbered 2. at level 0
CT-51	paragraph	numbered item, level 2	"Container item", then a plain paragraph "Plain paragraph text." indented under it as part of that item, then "Sibling after" numbered ii. at level 2, "Mid after" b., "Top after" 2.
CT-52	heading	numbered item, level 2	"Container item", then a Heading 4 "Inner heading" indented under it as part of that item, then "Sibling after" numbered ii. at level 2, "Mid after" b., "Top after" 2.
CT-53	bullet list	numbered item, level 2	"Container item", then a nested bullet list (Bullet A, Bullet B) one level deeper, with that level's glyph indented under it as part of that item, then "Sibling after" numbered ii. at level 2, "Mid after" b., "Top after" 2.
CT-54	numbered list	numbered item, level 2	"Container item", then a nested numbered list (Number A, Number B) one level deeper, with that level's numbering style (C3) indented under it as part of that item, then "Sibling after" numbered ii. at level 2, "Mid after" b., "Top after" 2.
CT-55	task list	numbered item, level 2	"Container item", then a nested task list (☐ Task A, ☑ Task B) one level deeper indented under it as part of that item, then "Sibling after" numbered ii. at level 2, "Mid after" b., "Top after" 2.
CT-56	code block	numbered item, level 2	"Container item", then a monospace code block "code line" indented under it as part of that item, then "Sibling after" numbered ii. at level 2, "Mid after" b., "Top after" 2.
CT-57	blockquote	numbered item, level 2	"Container item", then a quote (indent + left border) "Quoted line" indented under it as part of that item, then "Sibling after" numbered ii. at level 2, "Mid after" b., "Top after" 2.
CT-58	table	numbered item, level 2	"Container item", then a 2x2 table (bold header K/V, row k1/v1) indented under it as part of that item, then "Sibling after" numbered ii. at level 2, "Mid after" b., "Top after" 2.
CT-59	image	numbered item, level 2	"Container item", then the image indented under it as part of that item, then "Sibling after" numbered ii. at level 2, "Mid after" b., "Top after" 2.
CT-60	rule	numbered item, level 2	"Container item", then a horizontal rule indented under it as part of that item, then "Sibling after" numbered ii. at level 2, "Mid after" b., "Top after" 2.
CT-61	paragraph	blockquote	the "Container quote line", then a plain paragraph "Plain paragraph text." inside the quote, all inside the quote (depth 1: one step of indent and the left border)
CT-62	heading	blockquote	the "Container quote line", then a Heading 4 "Inner heading" inside the quote, all inside the quote (depth 1: one step of indent and the left border)
CT-63	bullet list	blockquote	the "Container quote line", then a 2-item bullet list at level 0 (● Bullet A, ● Bullet B) inside the quote, all inside the quote (depth 1: one step of indent and the left border)
CT-64	numbered list	blockquote	the "Container quote line", then a 2-item numbered list at level 0 (1. Number A, 2. Number B) inside the quote, all inside the quote (depth 1: one step of indent and the left border)
CT-65	task list	blockquote	the "Container quote line", then a 2-item task list at level 0 (☐ Task A, ☑ Task B) inside the quote, all inside the quote (depth 1: one step of indent and the left border)
CT-66	code block	blockquote	the "Container quote line", then a monospace code block "code line" inside the quote, all inside the quote (depth 1: one step of indent and the left border)
CT-67	blockquote	blockquote	the "Container quote line" at depth 1, then "Quoted line" as its own quote at depth 2
CT-68	table	blockquote	the "Container quote line", then a 2x2 table (bold header K/V, row k1/v1) inside the quote, all inside the quote (depth 1: one step of indent and the left border)
CT-69	image	blockquote	the "Container quote line", then the image inside the quote, all inside the quote (depth 1: one step of indent and the left border)
CT-70	rule	blockquote	the "Container quote line", then a horizontal rule inside the quote, all inside the quote (depth 1: one step of indent and the left border)
CT-71	paragraph	nested blockquote (depth 2)	the "Container quote line", then a plain paragraph "Plain paragraph text." inside the quote, all inside the inner quote (depth 2: two steps of indent)
CT-72	heading	nested blockquote (depth 2)	the "Container quote line", then a Heading 4 "Inner heading" inside the quote, all inside the inner quote (depth 2: two steps of indent)
CT-73	bullet list	nested blockquote (depth 2)	the "Container quote line", then a 2-item bullet list at level 0 (● Bullet A, ● Bullet B) inside the quote, all inside the inner quote (depth 2: two steps of indent)
CT-74	numbered list	nested blockquote (depth 2)	the "Container quote line", then a 2-item numbered list at level 0 (1. Number A, 2. Number B) inside the quote, all inside the inner quote (depth 2: two steps of indent)
CT-75	task list	nested blockquote (depth 2)	the "Container quote line", then a 2-item task list at level 0 (☐ Task A, ☑ Task B) inside the quote, all inside the inner quote (depth 2: two steps of indent)
CT-76	code block	nested blockquote (depth 2)	the "Container quote line", then a monospace code block "code line" inside the quote, all inside the inner quote (depth 2: two steps of indent)
CT-77	blockquote	nested blockquote (depth 2)	"Outer quote" at depth 1, the "Container quote line" at depth 2, then "Quoted line" at depth 3
CT-78	table	nested blockquote (depth 2)	the "Container quote line", then a 2x2 table (bold header K/V, row k1/v1) inside the quote, all inside the inner quote (depth 2: two steps of indent)
CT-79	image	nested blockquote (depth 2)	the "Container quote line", then the image inside the quote, all inside the inner quote (depth 2: two steps of indent)
CT-80	rule	nested blockquote (depth 2)	the "Container quote line", then a horizontal rule inside the quote, all inside the inner quote (depth 2: two steps of indent)

TC-MD202: Adjacency matrix, no blank line ⚠️ destructive

Prompt Playwright: required

Render docs/qa/fixtures/md/syntax/md-adjacency-noblank.md through EP-1 to EP-8.

Every block construct directly followed by every other, with no blank line between. Most bugs live at these boundaries. Several pairs merge under CommonMark/GFM (a paragraph line continues a list item, a quote, or a table); the Expected column says so where it applies.

Case	A	B	Expected
AJ-001	paragraph	paragraph	ONE paragraph: "Plain paragraph text." joined to what precedes it by a space
AJ-002	paragraph	heading	a plain paragraph "Plain paragraph text.", then a Heading 4 "Inner heading"
AJ-003	paragraph	bullet list	a plain paragraph "Plain paragraph text.", then a 2-item bullet list (Bullet A, Bullet B)
AJ-004	paragraph	numbered list	a plain paragraph "Plain paragraph text.", then a 2-item numbered list (1. Number A, 2. Number B) (an ordered list starting at 1 may interrupt a paragraph)
AJ-005	paragraph	task list	a plain paragraph "Plain paragraph text.", then a 2-item task list (☐ Task A, ☑ Task B)
AJ-006	paragraph	code block	a plain paragraph "Plain paragraph text.", then a monospace code block "code line"
AJ-007	paragraph	blockquote	a plain paragraph "Plain paragraph text.", then a quote (indent + left border) "Quoted line"
AJ-008	paragraph	table	a plain paragraph "Plain paragraph text.", then a 2x2 table (bold header K/V, row k1/v1) (D2: the table starts its own block)
AJ-009	paragraph	image	ONE paragraph: "Plain paragraph text.", a space, then the image inline
AJ-010	paragraph	rule	a plain paragraph "Plain paragraph text.", then a horizontal rule
AJ-011	heading	paragraph	a Heading 4 "Inner heading", then a plain paragraph "Plain paragraph text."
AJ-012	heading	heading	a Heading 4 "Inner heading", then a Heading 4 "Inner heading"
AJ-013	heading	bullet list	a Heading 4 "Inner heading", then a 2-item bullet list (Bullet A, Bullet B)
AJ-014	heading	numbered list	a Heading 4 "Inner heading", then a 2-item numbered list (1. Number A, 2. Number B)
AJ-015	heading	task list	a Heading 4 "Inner heading", then a 2-item task list (☐ Task A, ☑ Task B)
AJ-016	heading	code block	a Heading 4 "Inner heading", then a monospace code block "code line"
AJ-017	heading	blockquote	a Heading 4 "Inner heading", then a quote (indent + left border) "Quoted line"
AJ-018	heading	table	a Heading 4 "Inner heading", then a 2x2 table (bold header K/V, row k1/v1)
AJ-019	heading	image	a Heading 4 "Inner heading", then an inline image on its own line
AJ-020	heading	rule	a Heading 4 "Inner heading", then a horizontal rule
AJ-021	bullet list	paragraph	a 2-item bullet list (Bullet A, Bullet B), with the next line joined to the last item's text by a space (lazy continuation)
AJ-022	bullet list	heading	a 2-item bullet list (Bullet A, Bullet B), then a Heading 4 "Inner heading"
AJ-023	bullet list	bullet list	ONE list holding all four items, in order
AJ-024	bullet list	numbered list	a 2-item bullet list (Bullet A, Bullet B), then a 2-item numbered list (1. Number A, 2. Number B)
AJ-025	bullet list	task list	ONE list holding all four items, in order
AJ-026	bullet list	code block	a 2-item bullet list (Bullet A, Bullet B), then a monospace code block "code line"
AJ-027	bullet list	blockquote	a 2-item bullet list (Bullet A, Bullet B), then a quote (indent + left border) "Quoted line"
AJ-028	bullet list	table	a 2-item bullet list (Bullet A, Bullet B), then a 2x2 table (bold header K/V, row k1/v1) (D2: the table starts its own block)
AJ-029	bullet list	image	a 2-item bullet list (Bullet A, Bullet B), with the next line joined to the last item's text by a space (lazy continuation)
AJ-030	bullet list	rule	a 2-item bullet list (Bullet A, Bullet B), then a horizontal rule
AJ-031	numbered list	paragraph	a 2-item numbered list (1. Number A, 2. Number B), with the next line joined to the last item's text by a space (lazy continuation)
AJ-032	numbered list	heading	a 2-item numbered list (1. Number A, 2. Number B), then a Heading 4 "Inner heading"
AJ-033	numbered list	bullet list	a 2-item numbered list (1. Number A, 2. Number B), then a 2-item bullet list (Bullet A, Bullet B)
AJ-034	numbered list	numbered list	ONE list holding all four items, in order (1. to 4.)
AJ-035	numbered list	task list	a 2-item numbered list (1. Number A, 2. Number B), then a 2-item task list (☐ Task A, ☑ Task B)
AJ-036	numbered list	code block	a 2-item numbered list (1. Number A, 2. Number B), then a monospace code block "code line"
AJ-037	numbered list	blockquote	a 2-item numbered list (1. Number A, 2. Number B), then a quote (indent + left border) "Quoted line"
AJ-038	numbered list	table	a 2-item numbered list (1. Number A, 2. Number B), then a 2x2 table (bold header K/V, row k1/v1) (D2: the table starts its own block)
AJ-039	numbered list	image	a 2-item numbered list (1. Number A, 2. Number B), with the next line joined to the last item's text by a space (lazy continuation)
AJ-040	numbered list	rule	a 2-item numbered list (1. Number A, 2. Number B), then a horizontal rule
AJ-041	task list	paragraph	a 2-item task list (☐ Task A, ☑ Task B), with the next line joined to the last item's text by a space (lazy continuation)
AJ-042	task list	heading	a 2-item task list (☐ Task A, ☑ Task B), then a Heading 4 "Inner heading"
AJ-043	task list	bullet list	ONE list holding all four items, in order
AJ-044	task list	numbered list	a 2-item task list (☐ Task A, ☑ Task B), then a 2-item numbered list (1. Number A, 2. Number B)
AJ-045	task list	task list	ONE list holding all four items, in order
AJ-046	task list	code block	a 2-item task list (☐ Task A, ☑ Task B), then a monospace code block "code line"
AJ-047	task list	blockquote	a 2-item task list (☐ Task A, ☑ Task B), then a quote (indent + left border) "Quoted line"
AJ-048	task list	table	a 2-item task list (☐ Task A, ☑ Task B), then a 2x2 table (bold header K/V, row k1/v1) (D2: the table starts its own block)
AJ-049	task list	image	a 2-item task list (☐ Task A, ☑ Task B), with the next line joined to the last item's text by a space (lazy continuation)
AJ-050	task list	rule	a 2-item task list (☐ Task A, ☑ Task B), then a horizontal rule
AJ-051	code block	paragraph	a monospace code block "code line", then a plain paragraph "Plain paragraph text."
AJ-052	code block	heading	a monospace code block "code line", then a Heading 4 "Inner heading"
AJ-053	code block	bullet list	a monospace code block "code line", then a 2-item bullet list (Bullet A, Bullet B)
AJ-054	code block	numbered list	a monospace code block "code line", then a 2-item numbered list (1. Number A, 2. Number B)
AJ-055	code block	task list	a monospace code block "code line", then a 2-item task list (☐ Task A, ☑ Task B)
AJ-056	code block	code block	a monospace code block "code line", then a monospace code block "code line"
AJ-057	code block	blockquote	a monospace code block "code line", then a quote (indent + left border) "Quoted line"
AJ-058	code block	table	a monospace code block "code line", then a 2x2 table (bold header K/V, row k1/v1)
AJ-059	code block	image	a monospace code block "code line", then an inline image on its own line
AJ-060	code block	rule	a monospace code block "code line", then a horizontal rule
AJ-061	blockquote	paragraph	ONE quote holding one paragraph: the next line joins the quoted line by a space
AJ-062	blockquote	heading	a quote (indent + left border) "Quoted line", then a Heading 4 "Inner heading"
AJ-063	blockquote	bullet list	a quote (indent + left border) "Quoted line", then a 2-item bullet list (Bullet A, Bullet B)
AJ-064	blockquote	numbered list	a quote (indent + left border) "Quoted line", then a 2-item numbered list (1. Number A, 2. Number B)
AJ-065	blockquote	task list	a quote (indent + left border) "Quoted line", then a 2-item task list (☐ Task A, ☑ Task B)
AJ-066	blockquote	code block	a quote (indent + left border) "Quoted line", then a monospace code block "code line"
AJ-067	blockquote	blockquote	ONE quote holding one paragraph: the next line joins the quoted line by a space
AJ-068	blockquote	table	a quote (indent + left border) "Quoted line", then a 2x2 table (bold header K/V, row k1/v1) (D2: the table starts its own block)
AJ-069	blockquote	image	ONE quote holding one paragraph: the next line joins the quoted line by a space
AJ-070	blockquote	rule	a quote (indent + left border) "Quoted line", then a horizontal rule
AJ-071	table	paragraph	the table with the next line as an extra one-cell body row (GFM: a table ends only at a blank line or another block)
AJ-072	table	heading	a 2x2 table (bold header K/V, row k1/v1), then a Heading 4 "Inner heading"
AJ-073	table	bullet list	a 2x2 table (bold header K/V, row k1/v1), then a 2-item bullet list (Bullet A, Bullet B)
AJ-074	table	numbered list	a 2x2 table (bold header K/V, row k1/v1), then a 2-item numbered list (1. Number A, 2. Number B)
AJ-075	table	task list	a 2x2 table (bold header K/V, row k1/v1), then a 2-item task list (☐ Task A, ☑ Task B)
AJ-076	table	code block	a 2x2 table (bold header K/V, row k1/v1), then a monospace code block "code line"
AJ-077	table	blockquote	a 2x2 table (bold header K/V, row k1/v1), then a quote (indent + left border) "Quoted line"
AJ-078	table	table	ONE table: the second table's three lines become body rows K/V, ---/---, k1/v1 (GFM: a table ends only at a blank line)
AJ-079	table	image	the table with the next line as an extra one-cell body row (GFM: a table ends only at a blank line or another block)
AJ-080	table	rule	a 2x2 table (bold header K/V, row k1/v1), then a horizontal rule
AJ-081	image	paragraph	ONE paragraph: the image, a space, then "Plain paragraph text."
AJ-082	image	heading	an inline image on its own line, then a Heading 4 "Inner heading"
AJ-083	image	bullet list	an inline image on its own line, then a 2-item bullet list (Bullet A, Bullet B)
AJ-084	image	numbered list	an inline image on its own line, then a 2-item numbered list (1. Number A, 2. Number B) (an ordered list starting at 1 may interrupt a paragraph)
AJ-085	image	task list	an inline image on its own line, then a 2-item task list (☐ Task A, ☑ Task B)
AJ-086	image	code block	an inline image on its own line, then a monospace code block "code line"
AJ-087	image	blockquote	an inline image on its own line, then a quote (indent + left border) "Quoted line"
AJ-088	image	table	an inline image on its own line, then a 2x2 table (bold header K/V, row k1/v1) (D2: the table starts its own block)
AJ-089	image	image	ONE paragraph holding both images, separated by a space
AJ-090	image	rule	an inline image on its own line, then a horizontal rule
AJ-091	rule	paragraph	a horizontal rule, then a plain paragraph "Plain paragraph text."
AJ-092	rule	heading	a horizontal rule, then a Heading 4 "Inner heading"
AJ-093	rule	bullet list	a horizontal rule, then a 2-item bullet list (Bullet A, Bullet B)
AJ-094	rule	numbered list	a horizontal rule, then a 2-item numbered list (1. Number A, 2. Number B)
AJ-095	rule	task list	a horizontal rule, then a 2-item task list (☐ Task A, ☑ Task B)
AJ-096	rule	code block	a horizontal rule, then a monospace code block "code line"
AJ-097	rule	blockquote	a horizontal rule, then a quote (indent + left border) "Quoted line"
AJ-098	rule	table	a horizontal rule, then a 2x2 table (bold header K/V, row k1/v1)
AJ-099	rule	image	a horizontal rule, then an inline image on its own line
AJ-100	rule	rule	a horizontal rule, then a horizontal rule

TC-MD203: Adjacency matrix, blank line ⚠️ destructive

Prompt Playwright: required

Render docs/qa/fixtures/md/syntax/md-adjacency-blank.md through EP-1 to EP-8.

The same 100 pairs separated by one blank line.

Case	A	B	Expected
AB-001	paragraph	paragraph	a plain paragraph "Plain paragraph text.", then a plain paragraph "Plain paragraph text.", as separate blocks
AB-002	paragraph	heading	a plain paragraph "Plain paragraph text.", then a Heading 4 "Inner heading", as separate blocks
AB-003	paragraph	bullet list	a plain paragraph "Plain paragraph text.", then a 2-item bullet list (Bullet A, Bullet B), as separate blocks
AB-004	paragraph	numbered list	a plain paragraph "Plain paragraph text.", then a 2-item numbered list (1. Number A, 2. Number B), as separate blocks
AB-005	paragraph	task list	a plain paragraph "Plain paragraph text.", then a 2-item task list (☐ Task A, ☑ Task B), as separate blocks
AB-006	paragraph	code block	a plain paragraph "Plain paragraph text.", then a monospace code block "code line", as separate blocks
AB-007	paragraph	blockquote	a plain paragraph "Plain paragraph text.", then a quote (indent + left border) "Quoted line", as separate blocks
AB-008	paragraph	table	a plain paragraph "Plain paragraph text.", then a 2x2 table (bold header K/V, row k1/v1), as separate blocks
AB-009	paragraph	image	a plain paragraph "Plain paragraph text.", then an inline image on its own line, as separate blocks
AB-010	paragraph	rule	a plain paragraph "Plain paragraph text.", then a horizontal rule, as separate blocks
AB-011	heading	paragraph	a Heading 4 "Inner heading", then a plain paragraph "Plain paragraph text.", as separate blocks
AB-012	heading	heading	a Heading 4 "Inner heading", then a Heading 4 "Inner heading", as separate blocks
AB-013	heading	bullet list	a Heading 4 "Inner heading", then a 2-item bullet list (Bullet A, Bullet B), as separate blocks
AB-014	heading	numbered list	a Heading 4 "Inner heading", then a 2-item numbered list (1. Number A, 2. Number B), as separate blocks
AB-015	heading	task list	a Heading 4 "Inner heading", then a 2-item task list (☐ Task A, ☑ Task B), as separate blocks
AB-016	heading	code block	a Heading 4 "Inner heading", then a monospace code block "code line", as separate blocks
AB-017	heading	blockquote	a Heading 4 "Inner heading", then a quote (indent + left border) "Quoted line", as separate blocks
AB-018	heading	table	a Heading 4 "Inner heading", then a 2x2 table (bold header K/V, row k1/v1), as separate blocks
AB-019	heading	image	a Heading 4 "Inner heading", then an inline image on its own line, as separate blocks
AB-020	heading	rule	a Heading 4 "Inner heading", then a horizontal rule, as separate blocks
AB-021	bullet list	paragraph	a 2-item bullet list (Bullet A, Bullet B), then a plain paragraph "Plain paragraph text.", as separate blocks
AB-022	bullet list	heading	a 2-item bullet list (Bullet A, Bullet B), then a Heading 4 "Inner heading", as separate blocks
AB-023	bullet list	bullet list	ONE loose list holding all four items, in order (a blank line doesn't end a list)
AB-024	bullet list	numbered list	a 2-item bullet list (Bullet A, Bullet B), then a 2-item numbered list (1. Number A, 2. Number B), as separate blocks
AB-025	bullet list	task list	ONE loose list holding all four items, in order (a blank line doesn't end a list)
AB-026	bullet list	code block	a 2-item bullet list (Bullet A, Bullet B), then a monospace code block "code line", as separate blocks
AB-027	bullet list	blockquote	a 2-item bullet list (Bullet A, Bullet B), then a quote (indent + left border) "Quoted line", as separate blocks
AB-028	bullet list	table	a 2-item bullet list (Bullet A, Bullet B), then a 2x2 table (bold header K/V, row k1/v1), as separate blocks
AB-029	bullet list	image	a 2-item bullet list (Bullet A, Bullet B), then an inline image on its own line, as separate blocks
AB-030	bullet list	rule	a 2-item bullet list (Bullet A, Bullet B), then a horizontal rule, as separate blocks
AB-031	numbered list	paragraph	a 2-item numbered list (1. Number A, 2. Number B), then a plain paragraph "Plain paragraph text.", as separate blocks
AB-032	numbered list	heading	a 2-item numbered list (1. Number A, 2. Number B), then a Heading 4 "Inner heading", as separate blocks
AB-033	numbered list	bullet list	a 2-item numbered list (1. Number A, 2. Number B), then a 2-item bullet list (Bullet A, Bullet B), as separate blocks
AB-034	numbered list	numbered list	ONE loose list holding all four items, in order (a blank line doesn't end a list) (1. to 4.)
AB-035	numbered list	task list	a 2-item numbered list (1. Number A, 2. Number B), then a 2-item task list (☐ Task A, ☑ Task B), as separate blocks
AB-036	numbered list	code block	a 2-item numbered list (1. Number A, 2. Number B), then a monospace code block "code line", as separate blocks
AB-037	numbered list	blockquote	a 2-item numbered list (1. Number A, 2. Number B), then a quote (indent + left border) "Quoted line", as separate blocks
AB-038	numbered list	table	a 2-item numbered list (1. Number A, 2. Number B), then a 2x2 table (bold header K/V, row k1/v1), as separate blocks
AB-039	numbered list	image	a 2-item numbered list (1. Number A, 2. Number B), then an inline image on its own line, as separate blocks
AB-040	numbered list	rule	a 2-item numbered list (1. Number A, 2. Number B), then a horizontal rule, as separate blocks
AB-041	task list	paragraph	a 2-item task list (☐ Task A, ☑ Task B), then a plain paragraph "Plain paragraph text.", as separate blocks
AB-042	task list	heading	a 2-item task list (☐ Task A, ☑ Task B), then a Heading 4 "Inner heading", as separate blocks
AB-043	task list	bullet list	ONE loose list holding all four items, in order (a blank line doesn't end a list)
AB-044	task list	numbered list	a 2-item task list (☐ Task A, ☑ Task B), then a 2-item numbered list (1. Number A, 2. Number B), as separate blocks
AB-045	task list	task list	ONE loose list holding all four items, in order (a blank line doesn't end a list)
AB-046	task list	code block	a 2-item task list (☐ Task A, ☑ Task B), then a monospace code block "code line", as separate blocks
AB-047	task list	blockquote	a 2-item task list (☐ Task A, ☑ Task B), then a quote (indent + left border) "Quoted line", as separate blocks
AB-048	task list	table	a 2-item task list (☐ Task A, ☑ Task B), then a 2x2 table (bold header K/V, row k1/v1), as separate blocks
AB-049	task list	image	a 2-item task list (☐ Task A, ☑ Task B), then an inline image on its own line, as separate blocks
AB-050	task list	rule	a 2-item task list (☐ Task A, ☑ Task B), then a horizontal rule, as separate blocks
AB-051	code block	paragraph	a monospace code block "code line", then a plain paragraph "Plain paragraph text.", as separate blocks
AB-052	code block	heading	a monospace code block "code line", then a Heading 4 "Inner heading", as separate blocks
AB-053	code block	bullet list	a monospace code block "code line", then a 2-item bullet list (Bullet A, Bullet B), as separate blocks
AB-054	code block	numbered list	a monospace code block "code line", then a 2-item numbered list (1. Number A, 2. Number B), as separate blocks
AB-055	code block	task list	a monospace code block "code line", then a 2-item task list (☐ Task A, ☑ Task B), as separate blocks
AB-056	code block	code block	a monospace code block "code line", then a monospace code block "code line", as separate blocks
AB-057	code block	blockquote	a monospace code block "code line", then a quote (indent + left border) "Quoted line", as separate blocks
AB-058	code block	table	a monospace code block "code line", then a 2x2 table (bold header K/V, row k1/v1), as separate blocks
AB-059	code block	image	a monospace code block "code line", then an inline image on its own line, as separate blocks
AB-060	code block	rule	a monospace code block "code line", then a horizontal rule, as separate blocks
AB-061	blockquote	paragraph	a quote (indent + left border) "Quoted line", then a plain paragraph "Plain paragraph text.", as separate blocks
AB-062	blockquote	heading	a quote (indent + left border) "Quoted line", then a Heading 4 "Inner heading", as separate blocks
AB-063	blockquote	bullet list	a quote (indent + left border) "Quoted line", then a 2-item bullet list (Bullet A, Bullet B), as separate blocks
AB-064	blockquote	numbered list	a quote (indent + left border) "Quoted line", then a 2-item numbered list (1. Number A, 2. Number B), as separate blocks
AB-065	blockquote	task list	a quote (indent + left border) "Quoted line", then a 2-item task list (☐ Task A, ☑ Task B), as separate blocks
AB-066	blockquote	code block	a quote (indent + left border) "Quoted line", then a monospace code block "code line", as separate blocks
AB-067	blockquote	blockquote	two separate quotes
AB-068	blockquote	table	a quote (indent + left border) "Quoted line", then a 2x2 table (bold header K/V, row k1/v1), as separate blocks
AB-069	blockquote	image	a quote (indent + left border) "Quoted line", then an inline image on its own line, as separate blocks
AB-070	blockquote	rule	a quote (indent + left border) "Quoted line", then a horizontal rule, as separate blocks
AB-071	table	paragraph	a 2x2 table (bold header K/V, row k1/v1), then a plain paragraph "Plain paragraph text.", as separate blocks
AB-072	table	heading	a 2x2 table (bold header K/V, row k1/v1), then a Heading 4 "Inner heading", as separate blocks
AB-073	table	bullet list	a 2x2 table (bold header K/V, row k1/v1), then a 2-item bullet list (Bullet A, Bullet B), as separate blocks
AB-074	table	numbered list	a 2x2 table (bold header K/V, row k1/v1), then a 2-item numbered list (1. Number A, 2. Number B), as separate blocks
AB-075	table	task list	a 2x2 table (bold header K/V, row k1/v1), then a 2-item task list (☐ Task A, ☑ Task B), as separate blocks
AB-076	table	code block	a 2x2 table (bold header K/V, row k1/v1), then a monospace code block "code line", as separate blocks
AB-077	table	blockquote	a 2x2 table (bold header K/V, row k1/v1), then a quote (indent + left border) "Quoted line", as separate blocks
AB-078	table	table	a 2x2 table (bold header K/V, row k1/v1), then a 2x2 table (bold header K/V, row k1/v1), as separate blocks
AB-079	table	image	a 2x2 table (bold header K/V, row k1/v1), then an inline image on its own line, as separate blocks
AB-080	table	rule	a 2x2 table (bold header K/V, row k1/v1), then a horizontal rule, as separate blocks
AB-081	image	paragraph	an inline image on its own line, then a plain paragraph "Plain paragraph text.", as separate blocks
AB-082	image	heading	an inline image on its own line, then a Heading 4 "Inner heading", as separate blocks
AB-083	image	bullet list	an inline image on its own line, then a 2-item bullet list (Bullet A, Bullet B), as separate blocks
AB-084	image	numbered list	an inline image on its own line, then a 2-item numbered list (1. Number A, 2. Number B), as separate blocks
AB-085	image	task list	an inline image on its own line, then a 2-item task list (☐ Task A, ☑ Task B), as separate blocks
AB-086	image	code block	an inline image on its own line, then a monospace code block "code line", as separate blocks
AB-087	image	blockquote	an inline image on its own line, then a quote (indent + left border) "Quoted line", as separate blocks
AB-088	image	table	an inline image on its own line, then a 2x2 table (bold header K/V, row k1/v1), as separate blocks
AB-089	image	image	an inline image on its own line, then an inline image on its own line, as separate blocks
AB-090	image	rule	an inline image on its own line, then a horizontal rule, as separate blocks
AB-091	rule	paragraph	a horizontal rule, then a plain paragraph "Plain paragraph text.", as separate blocks
AB-092	rule	heading	a horizontal rule, then a Heading 4 "Inner heading", as separate blocks
AB-093	rule	bullet list	a horizontal rule, then a 2-item bullet list (Bullet A, Bullet B), as separate blocks
AB-094	rule	numbered list	a horizontal rule, then a 2-item numbered list (1. Number A, 2. Number B), as separate blocks
AB-095	rule	task list	a horizontal rule, then a 2-item task list (☐ Task A, ☑ Task B), as separate blocks
AB-096	rule	code block	a horizontal rule, then a monospace code block "code line", as separate blocks
AB-097	rule	blockquote	a horizontal rule, then a quote (indent + left border) "Quoted line", as separate blocks
AB-098	rule	table	a horizontal rule, then a 2x2 table (bold header K/V, row k1/v1), as separate blocks
AB-099	rule	image	a horizontal rule, then an inline image on its own line, as separate blocks
AB-100	rule	rule	a horizontal rule, then a horizontal rule, as separate blocks

TC-MD204: Inline formatting matrix ⚠️ destructive

Prompt Playwright: required

Render docs/qa/fixtures/md/syntax/md-inline-matrix.md through EP-1 to EP-8.

IN-01 to IN-20: each inline style (bold, italic, strikethrough, code, link) containing each other one. IN-21 to IN-32: all five styles together inside each block type, including headings, list items at depth 2, table header and body cells, and blockquotes. A link inside a link isn't valid Markdown and is left out; inside code, markers are literal by definition (IN-13 to IN-16 check exactly that).

Case	Combination	Expected
IN-01	italic inside bold	"outer inner outer" all bold; "inner" is also italic; no literal markers
IN-02	strike inside bold	"outer inner outer" all bold; "inner" is also struck through; no literal markers
IN-03	code inside bold	"outer inner outer" all bold; "inner" is also monospace (Courier New); no literal markers
IN-04	link inside bold	"outer inner outer" all bold; "inner" is also a link to https://example.com/inline; no literal markers
IN-05	bold inside italic	"outer inner outer" all italic; "inner" is also bold; no literal markers
IN-06	strike inside italic	"outer inner outer" all italic; "inner" is also struck through; no literal markers
IN-07	code inside italic	"outer inner outer" all italic; "inner" is also monospace (Courier New); no literal markers
IN-08	link inside italic	"outer inner outer" all italic; "inner" is also a link to https://example.com/inline; no literal markers
IN-09	bold inside strike	"outer inner outer" all struck through; "inner" is also bold; no literal markers
IN-10	italic inside strike	"outer inner outer" all struck through; "inner" is also italic; no literal markers
IN-11	code inside strike	"outer inner outer" all struck through; "inner" is also monospace (Courier New); no literal markers
IN-12	link inside strike	"outer inner outer" all struck through; "inner" is also a link to https://example.com/inline; no literal markers
IN-13	bold inside code	the whole span **inner** in code is monospace with the bold markers shown literally (no bold formatting inside code)
IN-14	italic inside code	the whole span *inner* in code is monospace with the italic markers shown literally (no italic formatting inside code)
IN-15	strike inside code	the whole span ~~inner~~ in code is monospace with the strike markers shown literally (no strike formatting inside code)
IN-16	link inside code	the whole span [inner](https://example.com/inline) in code is monospace with the link markers shown literally (no link formatting inside code)
IN-17	bold inside link	"outer inner outer" all a link to https://example.com/inline; "inner" is also bold; no literal markers
IN-18	italic inside link	"outer inner outer" all a link to https://example.com/inline; "inner" is also italic; no literal markers
IN-19	strike inside link	"outer inner outer" all a link to https://example.com/inline; "inner" is also struck through; no literal markers
IN-20	code inside link	"outer inner outer" all a link to https://example.com/inline; "inner" is also monospace (Courier New); no literal markers
IN-21	all five styles in a paragraph	B bold, I italic, S struck through, C monospace, L a link; each style only on its own letter; the paragraph itself renders correctly
IN-22	all five styles in a heading 2	B bold, I italic, S struck through, C monospace, L a link; each style only on its own letter; the heading 2 itself renders correctly
IN-23	all five styles in a heading 6	B bold, I italic, S struck through, C monospace, L a link; each style only on its own letter; the heading 6 itself renders correctly
IN-24	all five styles in a bullet item, level 0	B bold, I italic, S struck through, C monospace, L a link; each style only on its own letter; the bullet item, level 0 itself renders correctly
IN-25	all five styles in a bullet item, level 2	B bold, I italic, S struck through, C monospace, L a link; each style only on its own letter; the bullet item, level 2 itself renders correctly
IN-26	all five styles in a numbered item, level 0	B bold, I italic, S struck through, C monospace, L a link; each style only on its own letter; the numbered item, level 0 itself renders correctly
IN-27	all five styles in a numbered item, level 2	B bold, I italic, S struck through, C monospace, L a link; each style only on its own letter; the numbered item, level 2 itself renders correctly
IN-28	all five styles in a task item	B bold, I italic, S struck through, C monospace, L a link; each style only on its own letter; the task item itself renders correctly
IN-29	all five styles in a table header cell	B bold, I italic, S struck through, C monospace, L a link; every letter is bold (the header row is bold, C13), and each other style is only on its own letter; the table header cell itself renders correctly
IN-30	all five styles in a table body cell	B bold, I italic, S struck through, C monospace, L a link; each style only on its own letter; the table body cell itself renders correctly
IN-31	all five styles in a blockquote	B bold, I italic, S struck through, C monospace, L a link; each style only on its own letter; the blockquote itself renders correctly
IN-32	all five styles in a nested blockquote	B bold, I italic, S struck through, C monospace, L a link; each style only on its own letter; the nested blockquote itself renders correctly

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Document boundaries

TC-MD301: Documents that start or end with a non-paragraph block, and degenerate input ⚠️ destructive

Prompt Playwright: required

Render each file in docs/qa/fixtures/md/syntax/docstart/ through EP-1 to EP-8. Each file is its own case.

Case	File	Expected
DS-01	ds-01-starts-bullets.md	The bullet list is the first thing in the Doc; no empty paragraph above it
DS-02	ds-02-starts-numbered.md	Numbered list first, starting at 1.
DS-03	ds-03-starts-table.md	The table first (the collapsed blank paragraph before it stays invisible, C15), then the paragraph
DS-04	ds-04-starts-code.md	The code block first, then the paragraph
DS-05	ds-05-starts-quote.md	The quote first, then the paragraph
DS-06	ds-06-starts-image.md	The image first, then the paragraph
DS-07	ds-07-starts-rule.md	A horizontal line first, then the paragraph
DS-08	ds-08-ends-table.md	Heading, paragraph, table; no stray visible paragraph after the table beyond Docs' mandatory final one
DS-09	ds-09-ends-list.md	The list's last item is the last visible line; no empty bulleted line after it
DS-10	ds-10-empty.md	The call succeeds and leaves an empty Doc (EP-2/EP-4: the Doc's previous content is cleared)
DS-11	ds-11-whitespace-only.md	Same as DS-10
DS-12	ds-12-no-trailing-newline.md	The paragraph, intact
DS-13	ds-13-crlf-line-endings.md	Same rendering as the LF equivalent: heading, 2-item list, paragraph; no stray characters
DS-14	ds-14-front-matter.md	D3: the front matter isn't shown; the Doc starts with the Heading 1 "Body heading"

TC-MD302: Long document ⚠️ destructive

Prompt Playwright: required

Render docs/qa/fixtures/md/syntax/md-long-document.md (~2,000 lines: Phase 1's sixteen documents twice) through EP-1 to EP-8.

Checks - The call completes without a timeout or a partial Doc; on failure, the error names what failed. - Spot-check the second copy of r06 (how-to) and r16 (planning notes) at the end of the Doc: they render exactly like their Phase 1 renders (same numbering, nesting, code blocks). An offset bug that only shows deep into a long Doc shows here. - Every thematic break between documents is a visible line.

TC-MD303: A .md file with a long name through the Drive-import entry points ⚠️ destructive

Setup: copy docs/qa/fixtures/md/realistic/r01-meeting-notes.md to a temp directory as a file whose name is 110 ASCII bytes (qa-md303- padded with x, ending .md), and a second copy whose name is 45 CJK characters plus .md (over 130 UTF-8 bytes). Don't commit either name.

Prompt Playwright: required

Render each copy through EP-3, EP-5, EP-6 and EP-7.

Checks - No error and no failed entry for either file; nothing returns 403 propertyLengthLimitExceeded (#805, #806). - list_files on the target folder shows exactly one Doc per upload: no orphan left by a failed property write. - EP-7: a second sync_folder call with the same arguments reports the file skipped (in sync), not a new upload or a conflict. - Each Doc renders the meeting notes per TC-MD001.

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Document state

These use our converter's write paths (EP-2 and EP-4); the Drive-import entry points always create a new file and have no "existing Doc" to write into.

TC-MD401: Replacing a Doc that already has content ⚠️ destructive

Prompt Playwright: required

Create a Doc with create_doc(content=<contents of r07-comparison.md>, content_format="markdown"), then replace its content with r06-howto.md through EP-2, and again (a second Doc set up the same way) through EP-4.

Checks - The result is identical on screen to r06's render into a blank Doc (TC-MD006, same EP). - Nothing of r07 remains: no leftover table, list formatting, or styled empty paragraph.

TC-MD402: Writing into a Doc with a theme and non-default named styles ⚠️ destructive

Prompt Playwright: required

Create a blank Doc, run apply_theme(doc_id, theme=<contents of docs/qa/fixtures/md/state/theme.json>), then write r02-project-plan.md through EP-2 and (on a second themed Doc) EP-4.

Checks - Headings take the theme: Heading 1/2 in Montserrat, blue-ish, bold; Heading 3 Montserrat, gray, italic. Body text in Georgia. - Code spans and code blocks are still Courier New, not Georgia. - Lists, tables and numbering render exactly as in TC-MD002.

TC-MD403: update_doc_from_file twice in a row ⚠️ destructive

Prompt Playwright: required

On one blank Doc, run update_doc_from_file(doc_id, local_path=<r10-task-plan.md>) twice in a row.

Checks - The render after the second call is identical on screen to the render after the first. - Structural: get_doc_structure returns the same element list both times (same count, types, styles, list nesting); no accumulated empty paragraphs or duplicate lists.

TC-MD404: Determinism across runs ⚠️ destructive

Prompt

Not a separate render: this TC records the Run 1 vs. Run 2 comparison from "Running this suite" step 7 for every case in this file.

Checks - Every case's Run 2 screenshot matches Run 1 per entry point. Any difference is a FAIL of the case and of this TC.

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Known gaps and not-applicable

• Insert Markdown at an index: no tool does this (see "Entry points").
• Nested tables: Markdown can't express a table inside a table cell (docs/known-limitations.md, "Nested tables not supported via Markdown input"); not a case here.
• Comments, headers, footers: not Markdown constructs.