xref: /dokuwiki/_test/tests/Parsing/Markdown/gfm-spec/skip.php (revision 3e6baeff313fa406e4d4b5dd2e5ab85ec7d7816d)
1<?php
2
3/**
4 * GFM spec examples that GfmSpecTest should skip, keyed by example number
5 * (as numbered in spec.txt / the rendered spec).
6 *
7 * Add entries here ONLY for behavior DokuWiki has explicitly decided not to
8 * implement — not for features that are merely pending. Unimplemented
9 * features should show as real failures so they remain visible TODOs on
10 * the branch.
11 *
12 * Each value is a short human-readable reason that will appear in phpunit's
13 * skip output.
14 */
15
16return [
17    // --------------------------------------------------------------------
18    // Thematic breaks (GfmHr) — strict-only HR is intentional. The
19    // delimiter run must be bare: no leading, trailing, or internal
20    // whitespace in either DW or GFM flavor. The list-precedence cases
21    // additionally need a GfmListblock guard that is out of scope.
22    // --------------------------------------------------------------------
23    17 => 'thematic break: 0-3 spaces of leading indent. Strict policy:'
24        . ' opener must be at column 0 in either flavor.',
25    21 => 'thematic break: spaces between delimiter chars (`- - -`).'
26        . ' Strict policy: bare run only.',
27    22 => 'thematic break: spaces between delimiter chars (`** * **`).'
28        . ' Strict policy: bare run only.',
29    23 => 'thematic break: spaces between delimiter chars (`-     -`).'
30        . ' Strict policy: bare run only.',
31    24 => 'thematic break: trailing spaces after the run. Strict policy:'
32        . ' bare run only.',
33    29 => 'thematic break: Setext heading underline `Foo\n---` should'
34        . ' render as `<h2>`. Setext headings are deliberately not'
35        . ' supported — `---` collides with DokuWiki HR and `===` would'
36        . ' collide with DokuWiki heading syntax.',
37    30 => 'thematic break vs. list-item precedence (`* * *` between list'
38        . ' items): requires internal-space HR support and a GfmListblock'
39        . ' guard so the list refuses to absorb the HR-shaped line. Both'
40        . ' out of scope; the line stays a list-item body.',
41    31 => 'thematic break inside list with different bullet (`- * * *`):'
42        . ' depends on internal-space HR support inside the sub-parsed'
43        . ' item body. See example 30.',
44
45    // --------------------------------------------------------------------
46    // Fenced code blocks (GfmCode / GfmFile) — deliberate simplifications
47    // versus strict GFM. All of these are consequences of lexer constraints
48    // (no regex backreferences) or the deliberate column-0-only policy.
49    // --------------------------------------------------------------------
50    94  => 'fenced code: closing fence must be ≥ opening length — DokuWiki'
51         . ' accepts any 3+ run as a closer (no regex backreferences for'
52         . ' length pairing). Deliberate relaxation.',
53    95  => 'fenced code (tilde variant): closing fence must be ≥ opening'
54         . ' length — see example 94.',
55    96  => 'fenced code: unclosed fence — DokuWiki convention requires a'
56         . ' closer (matches DW <code> tag), so unclosed fences stay'
57         . ' literal rather than consuming to EOF. GFM spec rule depends'
58         . ' on CommonMark\'s two-pass block parser, which our single-pass'
59         . ' lexer cannot implement fully anyway (see example 98).',
60    97  => 'fenced code: unclosed fence with intervening short run — stays'
61         . ' literal, see example 96.',
62    101 => 'fenced code: opener indented 1 space — DokuWiki requires'
63         . ' column-0 fences. Indent tolerance + per-line body dedent out'
64         . ' of scope.',
65    102 => 'fenced code: opener indented 2 spaces — see example 101.',
66    103 => 'fenced code: opener indented 3 spaces — see example 101.',
67    105 => 'fenced code: closer indented 2 spaces — column-0-only policy,'
68         . ' see example 101.',
69    106 => 'fenced code: indented opener with less-indented closer —'
70         . ' column-0-only policy, see example 101.',
71    107 => 'fenced code: 4-space-indented closer — with column-0-only'
72         . ' policy there is no valid closer, so the fence stays literal'
73         . ' (see example 96).',
74    109 => 'fenced code: malformed closer `~~~ ~~` (space-broken run) —'
75         . ' with no valid closer the fence stays literal (see example 96).',
76    108 => 'fenced code: `` `` is not a valid fence; GFM falls back to an'
77         . ' inline code span of length 3. Inline spans with n≥3 not'
78         . ' implemented (GfmBacktickSingle/Double cover only n=1, n=2).',
79    111 => 'fenced code interrupting Setext heading (`foo\n---`): Setext'
80         . ' headings are deliberately not supported — the `---` underline'
81         . ' collides with DokuWiki\'s horizontal rule and `===` would'
82         . ' collide with DokuWiki heading syntax.',
83    115 => 'fenced code: `` `` backtick-fence-with-backticks-in-info-string'
84         . ' is invalid; GFM falls back to n=3 inline span — inline spans'
85         . ' with n≥3 not implemented. See example 108.',
86
87    // --------------------------------------------------------------------
88    // Code-span edge cases that collide with project-wide decisions
89    // (no raw HTML, no GFM angle-bracket autolinks, typography on by
90    // default) or with the single-pass lexer's limits.
91    // --------------------------------------------------------------------
92    351 => 'code span vs. emphasis: cross-positional precedence would require'
93         . ' a pre-scan pass — the single-pass lexer matches leftmost-first'
94         . ' and cannot reject an earlier emphasis opener because a later'
95         . ' backtick span would consume its closer',
96    353 => 'code span: the trailing `"` outside the span is converted to a'
97         . ' curly quote by DokuWiki typography, diverging from the spec HTML',
98    354 => 'raw HTML tag pass-through: DokuWiki does not render raw HTML by'
99         . ' default; `<html>` blocks are the opt-in',
100    356 => 'GFM angle-bracket autolink `<http://…>`: not implemented — we'
101         . ' rely on DokuWiki\'s existing bare-URL detection, which does not'
102         . ' parse `<URL>` form',
103
104    // --------------------------------------------------------------------
105    // CommonMark §6.2 flanking-delimiter analysis — deliberately not
106    // implemented. DokuWiki's regex lexer uses leftmost-match and cannot
107    // apply CommonMark's left/right-flanking rules that distinguish
108    // word-chars, whitespace, and punctuation for `*`/`_` delimiters, or
109    // the "multiple-of-3" rule for overlapping runs. These examples all
110    // rely on that machinery.
111    // --------------------------------------------------------------------
112
113    // Unicode whitespace in flanking context. Our `\s` is ASCII-only
114    // because the lexer doesn't set the PCRE `u` flag.
115    363 => 'Unicode whitespace (U+00A0) flanking — requires u-flag-aware regex',
116
117    // Punctuation-adjacent flanking for `*` / `_` / `**` / `__`
118    362 => 'flanking: punctuation-adjacent `*` (left-flanking vs. right-flanking)',
119    368 => 'flanking: punctuation-adjacent `_`',
120    372 => 'flanking: intraword `_` with punctuation inside',
121    377 => 'flanking: `*` followed by `(` requires punctuation-aware flanking',
122    378 => 'flanking: nested `*(*foo*)*` requires flanking + balanced-pair analysis',
123    382 => 'flanking: nested `_(_foo_)_` requires flanking + balanced-pair analysis',
124    389 => 'flanking: punctuation-adjacent `**`',
125    394 => 'flanking: punctuation-adjacent `__`',
126    401 => 'flanking: `**` followed by `(`',
127    404 => 'flanking: nested `*bar*` inside `**foo ... foo**` with punctuation',
128    407 => 'flanking: `__` followed by `(`',
129    470 => 'flanking: nested `*_foo_*` requires balanced-pair analysis',
130    472 => 'flanking: nested `_*foo*_` requires balanced-pair analysis',
131
132    // Intraword `__` strong (even multibyte) — flanking rule for `_` requires
133    // examining whether the delimiter run is word-boundary-flanking, which our
134    // simple lookbehind/lookahead approximation doesn't fully match.
135    395 => 'flanking: intraword `__` (`foo__bar__`) — left-flanking vs right-flanking',
136    396 => 'flanking: intraword `__` across digits (`5__6__78`)',
137    397 => 'flanking: intraword `__` with Cyrillic',
138    398 => 'flanking: `__foo, __bar__, baz__` — flanking + balanced pairing',
139    409 => 'flanking: `__foo__bar` — intraword close',
140    410 => 'flanking: intraword `__` with Cyrillic (leading)',
141    411 => 'flanking: `__foo__bar__baz__` — multiple `__` pairs with flanking',
142    412 => 'flanking: `__(bar)__.` — punctuation-adjacent',
143
144    // Overlapping / multiple-of-3 rule for runs
145    416 => 'CommonMark rule 9 (overlapping same-delimiter `_foo _bar_ baz_`)',
146    417 => 'CommonMark overlapping `_` / `__` with flanking',
147    418 => 'CommonMark overlapping `*foo *bar**` — multiple-of-3 rule',
148    419 => 'CommonMark nested `*foo **bar** baz*` — balanced-pair analysis',
149    421 => 'CommonMark overlapping `*foo**bar*` — multiple-of-3',
150    422 => 'CommonMark nested `***foo** bar*` — triple-delimiter analysis',
151    423 => 'CommonMark nested `*foo **bar***` — triple-delimiter analysis',
152    424 => 'CommonMark nested `*foo**bar***` — triple-delimiter analysis',
153    425 => 'CommonMark triple `foo***bar***baz` — triple-delimiter analysis',
154    426 => 'CommonMark long delimiter runs `foo******bar*********baz`',
155    427 => 'CommonMark deeply nested `*foo **bar *baz* bim** bop*`',
156    434 => 'CommonMark overlapping `__foo __bar__ baz__` — multiple-of-3',
157    435 => 'CommonMark `____foo__ bar__` — leading long delimiter run',
158    436 => 'CommonMark `**foo **bar****` — trailing long delimiter run',
159    439 => 'CommonMark nested `***foo* bar**` — triple-delimiter',
160    440 => 'CommonMark nested `**foo *bar***` — triple-delimiter',
161    441 => 'CommonMark deeply nested `**foo *bar **baz** bim* bop**`',
162
163    // `__foo_` / `_foo__` — mixing `_` and `__` requires flanking to decide
164    // which delimiter pairs open/close.
165    463 => 'flanking: `__foo_` — mixed `_`/`__` pairing',
166    464 => 'flanking: `_foo__` — mixed `_`/`__` pairing',
167    465 => 'flanking: `___foo__` — delimiter-run length analysis',
168    466 => 'flanking: `____foo_` — delimiter-run length analysis',
169    467 => 'flanking: `__foo___` — delimiter-run length analysis',
170    468 => 'flanking: `_foo____` — delimiter-run length analysis',
171
172    // Long delimiter runs require excess-drop logic (2 outer chars dropped
173    // from each side). Stack-based pairing needed — out of scope.
174    473 => 'CommonMark `****foo****` — excess-drop (4+4 → strong only)',
175    474 => 'CommonMark `____foo____` — excess-drop (4+4 → strong only)',
176    475 => 'CommonMark `******foo******` — excess-drop (6+6 → strong only)',
177    477 => 'CommonMark `_____foo_____` — excess-drop (5+5 → em+strong, 2 dropped each side)',
178
179    // Overlapping / crossing delimiters
180    478 => 'CommonMark `*foo _bar* baz_` — overlapping different delimiters',
181    479 => 'CommonMark `*foo __bar *baz bim__ bam*` — crossing delimiters',
182    480 => 'CommonMark `**foo **bar baz**` — overlapping same delimiter',
183
184    // --------------------------------------------------------------------
185    // Inline link `[text](url)` — features GfmLink deliberately does not
186    // implement. Either rarely-used syntax paid for with disproportionate
187    // regex complexity, or single-pass-lexer limits that can't be worked
188    // around inside one mode.
189    // --------------------------------------------------------------------
190
191    // GFM link title attribute (`"title"` / `'title'` / `(title)` after
192    // the URL). Parses cleanly but is discarded: DokuWiki's link handler
193    // instructions have no title-attribute slot, and plumbing one through
194    // every renderer is out of scope for GfmLink.
195    493 => 'link title attribute: GfmLink parses but discards — DokuWiki link instructions have no title slot',
196    513 => 'link title attribute (three quoting styles): discarded by GfmLink',
197    515 => 'link title separated by non-breaking space: title slot not supported',
198    516 => 'link title with nested balanced quotes: Markdown.pl quirk, not supported',
199    517 => 'link title with different quote type for inner quotes: title slot not supported',
200    518 => 'multi-line link title: title slot not supported',
201
202    // Pointy-bracket link destinations `<...>`. Rarely used; regex cost
203    // and interaction with raw-HTML detection outweigh the benefit.
204    496 => 'pointy-bracket link destination `<>`: not supported',
205    498 => 'pointy-bracket destination with spaces `<...>`: not supported',
206    500 => 'pointy-bracket destination with newline: not supported',
207    501 => 'pointy-bracket destination containing `)`: not supported',
208    502 => 'pointy-bracket destination with trailing backslash: not supported',
209    503 => 'malformed pointy-bracket destinations: renderer output differs',
210    507 => 'pointy-bracket destination wrapping unbalanced parens: not supported',
211
212    // Balanced-parens inside URL destinations.
213    505 => 'balanced-parens in URL destination: not supported (regex single-level)',
214
215    // Other URL-level edges.
216    495 => 'empty URL destination `[link]()`: pattern requires non-empty URL',
217    510 => 'backslash in URL destination: URL-encoding differs from spec',
218    511 => 'HTML entity / percent-encoding in URL: renderer normalization differs',
219    512 => 'link destination that parses as a title: edge case not supported',
220
221    // Inherent single-pass-lexer limits for link text containing nested
222    // structures. These cannot be resolved inside one mode.
223    522 => 'nested bracket forms inner link, outer falls back to literal',
224    526 => 'nested links: inner is a link, outer falls back to literal',
225    527 => 'nested links inside emphasis: not supported',
226    529 => 'link text grouping vs. emphasis: leftmost-match cannot override',
227    530 => 'emphasis/bracket crossing: leftmost-match cannot override',
228    532 => 'raw HTML inside link text: project-wide "no raw HTML" limit',
229    533 => 'code span inside link text: requires pre-scan pass (see #351)',
230    534 => 'autolink inside link text: raw `<URL>` autolinks not supported (see #356)',
231
232    // Reference links (`[text][id]`, `[text][]`, `[foo]` with matching
233    // `[foo]: url` definition). Not implemented: resolving forward
234    // references would require a two-pass parse, but DokuWiki's lexer is
235    // single-pass. Inline links `[text](url)` are the only supported
236    // form.
237    535 => 'reference link: forward-reference definitions not supported (single-pass lexer)',
238    536 => 'reference link: forward-reference definitions not supported (single-pass lexer)',
239    537 => 'reference link: forward-reference definitions not supported (single-pass lexer)',
240    538 => 'reference link: forward-reference definitions not supported (single-pass lexer)',
241    539 => 'reference link: forward-reference definitions not supported (single-pass lexer)',
242    540 => 'reference link: forward-reference definitions not supported (single-pass lexer)',
243    541 => 'reference link: forward-reference definitions not supported (single-pass lexer)',
244    542 => 'reference link: forward-reference definitions not supported (single-pass lexer)',
245    543 => 'reference link: forward-reference definitions not supported (single-pass lexer)',
246    544 => 'reference link: forward-reference definitions not supported (single-pass lexer)',
247    545 => 'reference link: forward-reference definitions not supported (single-pass lexer)',
248    546 => 'reference link: forward-reference definitions not supported (single-pass lexer)',
249    547 => 'reference link: forward-reference definitions not supported (single-pass lexer)',
250    548 => 'reference link: forward-reference definitions not supported (single-pass lexer)',
251    549 => 'reference link: forward-reference definitions not supported (single-pass lexer)',
252    550 => 'reference link: forward-reference definitions not supported (single-pass lexer)',
253    551 => 'reference link: forward-reference definitions not supported (single-pass lexer)',
254    552 => 'reference link: forward-reference definitions not supported (single-pass lexer)',
255    553 => 'reference link: forward-reference definitions not supported (single-pass lexer)',
256    557 => 'reference link: forward-reference definitions not supported (single-pass lexer)',
257    558 => 'reference link: forward-reference definitions not supported (single-pass lexer)',
258    560 => 'reference link: forward-reference definitions not supported (single-pass lexer)',
259    561 => 'collapsed reference link: forward-reference definitions not supported (single-pass lexer)',
260    562 => 'collapsed reference link: forward-reference definitions not supported (single-pass lexer)',
261    563 => 'collapsed reference link: forward-reference definitions not supported (single-pass lexer)',
262    564 => 'collapsed reference link: forward-reference definitions not supported (single-pass lexer)',
263    565 => 'shortcut reference link: forward-reference definitions not supported (single-pass lexer)',
264    566 => 'shortcut reference link: forward-reference definitions not supported (single-pass lexer)',
265    567 => 'shortcut reference link: forward-reference definitions not supported (single-pass lexer)',
266    568 => 'shortcut reference link: forward-reference definitions not supported (single-pass lexer)',
267    569 => 'shortcut reference link: forward-reference definitions not supported (single-pass lexer)',
268    570 => 'shortcut reference link: forward-reference definitions not supported (single-pass lexer)',
269    571 => 'shortcut reference link with escape: forward-reference definitions not supported (single-pass lexer)',
270    572 => 'shortcut reference link with emphasis: forward-reference definitions not supported (single-pass lexer)',
271    573 => 'reference link: forward-reference definitions not supported (single-pass lexer)',
272    574 => 'reference link: forward-reference definitions not supported (single-pass lexer)',
273    575 => 'reference link: forward-reference definitions not supported (single-pass lexer)',
274    576 => 'reference link: forward-reference definitions not supported (single-pass lexer)',
275    577 => 'reference link: forward-reference definitions not supported (single-pass lexer)',
276    578 => 'reference link: forward-reference definitions not supported (single-pass lexer)',
277    579 => 'reference link: forward-reference definitions not supported (single-pass lexer)',
278
279    // --------------------------------------------------------------------
280    // Inline image `![alt](url)`. The XHTML renderer's default media
281    // rendering diverges from GFM's bare <img> (it wraps in a details <a>
282    // with fetch.php/detail.php proxy URLs) — GfmSpecTest uses
283    // SpecCompatRenderer to emit spec-shape bare <img>, so only the
284    // parser-level or feature-level gaps remain as skips: title attribute
285    // (no DW slot), reference images, pointy-bracket destinations, nested
286    // brackets, and escape-dependent cases.
287    // --------------------------------------------------------------------
288
289    580 => 'image with title attribute: GfmMedia discards titles (no DW slot)',
290    581 => 'reference-style image: forward-reference definitions not supported (single-pass lexer)',
291    582 => 'nested image-in-image `![foo ![bar](x)](y)`: alt class forbids brackets;'
292         . ' leftmost-match cannot reorder — outer falls back to literal (see #526)',
293    583 => 'link-in-image alt `![foo [bar](x)](y)`: alt class forbids brackets;'
294         . ' leftmost-match cannot reorder — outer falls back to literal (see #526)',
295    584 => 'collapsed reference-style image: forward-reference definitions not supported',
296    585 => 'full reference-style image: forward-reference definitions not supported',
297    587 => 'image with title attribute: title discarded (no DW slot)',
298    588 => 'pointy-bracket image destination `![alt](<url>)`: not supported (see GfmLink #496)',
299    590 => 'reference-style image: forward-reference definitions not supported',
300    591 => 'reference-style image (case-insensitive label): forward-reference definitions not supported',
301    592 => 'collapsed reference-style image `![foo][]`: forward-reference definitions not supported',
302    593 => 'collapsed reference-style image with emphasis in label: forward-reference definitions not supported',
303    594 => 'collapsed reference-style image (case-insensitive): forward-reference definitions not supported',
304    595 => 'reference-style image with intervening whitespace: forward-reference definitions not supported',
305    596 => 'shortcut reference-style image `![foo]`: forward-reference definitions not supported',
306    597 => 'shortcut reference-style image with emphasis: forward-reference definitions not supported',
307    598 => 'image with unescaped nested brackets `![[foo]]`: literal-fallback behavior not supported',
308    599 => 'shortcut reference-style image (case-insensitive): forward-reference definitions not supported',
309
310    // --------------------------------------------------------------------
311    // ATX heading collisions with DokuWiki-specific behavior.
312    // --------------------------------------------------------------------
313    38 => 'ATX heading with leading spaces: GFM tolerates 0-3 spaces of'
314        . ' indent before the opener; we require the `#` at column 0.'
315        . ' Indent tolerance collides with DokuWiki\'s 2-space-indent'
316        . ' preformatted block and isn\'t worth untangling',
317    39 => 'indented code block: DokuWiki uses 2-space indent for'
318        . ' preformatted; GFM 4-space indented code blocks are not'
319        . ' implemented',
320    40 => 'indented code block: 4-space indent after a paragraph is a'
321        . ' continuation in GFM but preformatted in DokuWiki — not'
322        . ' implemented',
323    41 => 'ATX heading with leading spaces: second heading is indented'
324        . ' by 2 spaces; we require the `#` at column 0',
325    49 => 'empty ATX heading: DokuWiki\'s XHTML renderer deliberately'
326        . ' skips blank headings (blank() guard in Doku_Renderer_xhtml::header)',
327
328    // --------------------------------------------------------------------
329    // List items / Lists — list features GfmListblock deliberately does
330    // not implement. The simplifications are by design: indentation uses
331    // a fixed 2-space-multiple step starting at 0, lazy continuation is
332    // not supported, and the rewriter groups items by 'u'/'o' type only.
333    // The buckets are:
334    //
335    //  A. Extra spaces after the marker. CommonMark rolls them (up to
336    //     4) into the content column; we dedent at `marker_width + 1`,
337    //     collapsing the extras.
338    //  B. 1- or 3-space indent for nesting (we round down to nearest 2).
339    //  C. Lazy continuation (column-0 paragraph wrap inside an item).
340    //  D. Strict CommonMark loose/tight classification (every blank line
341    //     between items / inside items reclassifies; we use a simpler
342    //     single-paragraph-tight, multi-paragraph-loose rule).
343    //  E. Marker-character-change splits ordered lists ('.' vs ')') or
344    //     unordered ('-' vs '+' vs '*'). Our rewriter groups by 'u' / 'o'
345    //     type only, not by marker character.
346    //  F. List interrupting a paragraph without a blank line — requires a
347    //     multi-pass block parser to revisit prior text.
348    //
349    // Examples that depend on a pending mode (GfmQuote, GfmEscape, …) are
350    // intentionally NOT skipped — they remain visible failing tests until
351    // the mode lands.
352    // --------------------------------------------------------------------
353    // --------------------------------------------------------------------
354    // Block quotes — deliberate scope reductions vs. strict GFM. The
355    // unified GfmQuote mode (replacing DW Quote) covers `>` blockquotes
356    // for both DW and MD pages, but several CommonMark blockquote rules
357    // are out of scope:
358    //
359    // - 1-3 space indent before `>` (column-0-only policy, consistent
360    //   with GfmCode / GfmFile / GfmHeader).
361    // - Lazy continuation (paragraph text without `>` on continuation
362    //   lines). Same policy as GfmListblock — markers required on
363    //   every line.
364    // - Headers inside quotes — sub-parser excludes BASEONLY so header
365    //   instructions don't drive TOC/section-edit anchors that don't
366    //   compose with `<blockquote>`. Same rationale as GfmListblock's
367    //   header exclusion inside list items.
368    // - Setext-style block constructs (the `---` underline collides
369    //   with DW's HR rule).
370    //
371    // Examples that depend on still-pending modes (GfmHr) are
372    // intentionally NOT skipped — they stay visible until those modes
373    // land.
374    // --------------------------------------------------------------------
375    206 => 'block quotes: header inside quote — sub-parser excludes'
376         . ' BASEONLY (TOC / section-edit anchors do not compose with'
377         . ' `<blockquote>`). Same policy as GfmListblock for `<li>`.',
378    207 => 'block quotes: header inside quote with no space after `>` —'
379         . ' see #206 for the BASEONLY exclusion rationale.',
380    208 => 'block quotes: leading-space `>` (1-3 spaces of indent) —'
381         . ' column-0-only policy, consistent with GfmCode / GfmFile.',
382    210 => 'block quotes: lazy continuation `> # Foo\n> bar\nbaz` —'
383         . ' every quote line must begin with `>` at column 0. Same'
384         . ' policy as GfmListblock.',
385    211 => 'block quotes: lazy continuation `> bar\nbaz\n> foo` —'
386         . ' see #210.',
387    212 => 'block quotes: Setext heading underline `---` after `> foo`'
388         . ' — no Setext headings (the `---` collides with DW HR syntax).',
389    215 => 'block quotes: fenced code block split across blockquote'
390         . ' boundary — fence inside quote followed by non-`>` lines'
391         . ' depends on the same lazy-continuation rule we do not'
392         . ' implement (see #210).',
393    216 => 'block quotes: lazy continuation `> foo\n    - bar` — see #210.',
394    225 => 'block quotes: lazy continuation `> bar\nbaz` — see #210.',
395    227 => 'block quotes: lazy continuation `> bar\n>\nbaz` — see #210.',
396    228 => 'block quotes: lazy continuation in nested quote'
397         . ' `> > > foo\nbar` — see #210.',
398    229 => 'block quotes: lazy continuation across nested levels'
399         . ' `>>> foo\n> bar\n>>baz` — see #210.',
400
401    232 => 'list items: marker-width content-column alignment (A)',
402    235 => 'list items: marker-width content-column alignment (A)',
403    249 => 'list items: marker-width-driven content-column alignment for `10. foo` (A)',
404    254 => 'list items: marker-width content-column alignment edge case (A)',
405    258 => 'list items: marker-width content-column for `1.  foo` (A)',
406    263 => 'list items: indent ambiguity at column 0/1/2 (B)',
407    264 => 'list items: 1-space-indent variation (B)',
408    265 => 'list items: marker-width with multi-line continuation (A)',
409    266 => 'list items: marker-width with multi-line continuation (A)',
410    267 => 'list items: lazy continuation (C)',
411    268 => 'list items: lazy continuation (C)',
412    270 => 'list items: lazy continuation across blank line (C+D)',
413    273 => 'list items: list interrupting a paragraph without blank line (F)',
414    275 => 'list items: 3-space indent rounds to 2 — sub-list under previous item (B)',
415    276 => 'list items: marker-width content-column with mixed types (A+E)',
416    277 => 'list items: nested markers on a single line (A)',
417    278 => 'list items: marker-character switch splits the list (E)',
418    281 => 'lists: marker-character change splits unordered list `-` -> `+` (E)',
419    282 => 'lists: ordered delimiter switch splits list `.` -> `)` (E)',
420    284 => 'lists: list interrupting paragraph without blank line (F)',
421    286 => 'lists: marker-width content-column alignment for ordered list (A)',
422    287 => 'lists: triple blank line + indented continuation in deeply nested item (D)',
423    288 => 'lists: marker-character change at deeper level (E)',
424    289 => 'lists: marker-character change with type switch (E)',
425    290 => 'lists: 1-space-indent variations of items, all stay top-level (B)',
426    291 => 'lists: 1-space-indent variations on ordered list (B)',
427    292 => 'lists: marker-character change splits inside nested list (E)',
428    293 => 'lists: marker-character change with mixed indent (E+B)',
429    294 => 'lists: lazy continuation across types (C+E)',
430    295 => 'lists: lazy continuation in nested list (C)',
431    296 => 'lists: lazy continuation across blank line (C+D)',
432    297 => 'lists: blank-line classification for loose/tight in nested list (D)',
433    298 => 'lists: blank-line classification (D)',
434    300 => 'lists: blank-line classification with marker change (D+E)',
435    301 => 'lists: blank-line classification + marker-width alignment (D+A)',
436    304 => 'lists: blank line between sub-list items affects loose/tight (D)',
437    305 => 'lists: blank line between deeply nested items (D)',
438    306 => 'lists: blank line at the end of a loose list affects classification (D)',
439
440    // --------------------------------------------------------------------
441    // Backslash-escape examples (§6.1) that fail for reasons unrelated to
442    // GfmEscape itself: renderer divergences, typography conversion, and
443    // already-skipped GFM features (autolinks, raw HTML, reference links,
444    // discarded link titles). The escape mechanic itself works.
445    // --------------------------------------------------------------------
446    308 => 'backslash escapes: apostrophe is rendered as `&#039;` by DW while'
447         . ' the spec expects a literal `\'` — renderer policy difference,'
448         . ' not an escape bug',
449    310 => 'backslash escapes: DW typography converts straight `"..."` to curly'
450         . ' quotes when $conf[typography] is on, diverging from spec output',
451    316 => 'backslash escapes inside angle-bracket autolinks: GFM autolink'
452         . ' `<URL>` form not implemented (see example 356)',
453    317 => 'backslash escapes inside raw HTML: raw HTML pass-through is not'
454         . ' supported by default (see example 354)',
455    318 => 'backslash escapes in link title: title attribute is discarded — DW'
456         . ' link instructions have no title slot',
457    319 => 'backslash escapes in reference-link definition: link reference'
458         . ' definitions not supported (single-pass lexer cannot resolve'
459         . ' forward references)',
460];
461