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fix(strip-non-invoking-markup): open an indented code block after a heading or thematic break - #403

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fix/strip-icode-after-block
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fix(strip-non-invoking-markup): open an indented code block after a heading or thematic break#403
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fix/strip-icode-after-block

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Closes #356

WIP — opened up front to claim the issue; implementing now.

Plan

strip-non-invoking-markup.sh opens an indented code block only when the
preceding line was blank (prev_blank). Per CommonMark, the blank line is
only required so an indented block cannot interrupt a paragraph — following
a thematic break or an ATX heading, an indented block opens with no
blank line at all. So a quoted request in that position is not stripped and
dispatches a review off quoted text.

Fix: widen the icode-open precondition from "previous line blank" to "previous
line does not leave an open paragraph/list to lazily continue" — blank, ATX
heading, or thematic break. Deliberately not handling the list-item
predecessor (an indented line after a list item is a list continuation, not
code — the over-stripping direction #345 added guards for).

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…eading or thematic break

An indented code block may begin with no blank line after a thematic break or
an ATX heading -- neither leaves an open paragraph for the indented line to
lazily continue (CommonMark). The prior blank-line precondition missed that, so
a quoted request indented under a `---` or `#` heading was not stripped and
dispatched a review off quoted text.

Widen the icode-open precondition to a new opens_icode() predicate: blank, ATX
heading, or thematic break. A list item deliberately does not qualify -- an
indented line after one is a list continuation, not code -- preserving the
over-stripping guards from #345. Thematic breaks are detected by character
count rather than a backreference regex, which POSIX ERE (awk) does not support.

Adds four cases to the offline suite (31 total): the thematic-break, ATX, and
spaced-thematic-break openers (each fails against the pre-fix script), plus a
list-item guard.

Closes #356
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d-morrison marked this pull request as ready for review August 4, 2026 03:42
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Comment thread .github/workflows/scripts/strip-non-invoking-markup.sh Outdated
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…add changelog fragment

Review round 1 (claude-review): opens_icode missed =-underlined setext
headings, so a request quoted as an indented code block under 'Heading\n======'
was not stripped and dispatched a review off quoted text -- the exact bug class
#356 exists to close, for a construct ("headings") #356 lists in scope. The -
underline worked only by coincidence (>=3 dashes also satisfy is_thematic_break).

A setext underline is a heading underline only when the line before it is
paragraph text; the same =/- run elsewhere is a paragraph, a thematic break, or
a list marker. So add is_setext_underline() plus a prev_para paragraph-context
flag, and open an indented code block after a setext underline only when it sits
under paragraph text. Rename opens_icode -> heading_or_break (the context-free
ATX/thematic part). Covers both underline characters and 1-2 dash underlines.

Adds four offline cases (35 total): =-underline and single-dash-underline
openers (each fails against the round-1 script), plus two guards that a =-run at
start or after a blank is a paragraph and must not over-strip.

Also adds the changelog.d/ fragment every prior fix to this file carried
(review finding 2).
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ARD — review round 1 (claude-review: "Needs more work")

Finding 1 (blocking): setext heading =-underline not recognized → Addressed in e58369e.
Added is_setext_underline() + a prev_para paragraph-context flag. A setext underline opens an indented code block only when it sits under paragraph text (so a bare ====== paragraph is correctly not a predecessor and its indented follower is preserved). Renamed opens_icodeheading_or_break. Covers both =/- underline characters, including 1–2 dash underlines the thematic-break check misses. The - case now works by rule rather than by coincidence.

Finding 2 (non-blocking, convention): missing changelog fragment → Addressed — added changelog.d/strip-non-invoking-markup-block-predecessors.fixed.md.

Verification

  • Offline suite: 35/35 (added 4 setext cases; the suite previously had none). The two =/single-dash openers each fail against the round-1 script, pinning the fix; two guards confirm a =-run at start/after a blank is not over-stripped.
  • End-to-end through detect-review-request.sh: setext-heading + indented request → false (was true); paragraph-=== + indented → true (not stripped).
  • shellcheck clean; no banned punctuation; semantic-line-break check clean.

Ruled-out from round 1 stand (mawk {1,6} interval, spec traces, no hallucinations). Re-requesting review.

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Comment thread .github/workflows/scripts/strip-non-invoking-markup.sh Outdated
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…raph state

Review round 2 (claude-review): prev_para's update used the raw `ul` match
instead of whether the line was actually consumed as a setext underline
(`ul && prev_para`). A `=`/`-` run with no paragraph above it is not consumed --
CommonMark makes it an ordinary new paragraph -- so prev_para must go to 1 for
the next line. With the raw-ul formula, a chain of underline-shaped lines
mistracked state: `===` / `===` / indented request formed an H1 whose indented
follower was not recognized as code, so the quoted request survived and reached
the matcher (verified: detect-review-request returned true; want false).

Introduce `consumed = (ul && prev_para)` and key both prev_opens_icode and
prev_para on it. Adds a regression case (36 total) for the two-`===`-line chain,
confirmed to fail against the round-2 script (e58369e).
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ARD — review round 2 (claude-review: "Needs more work")

Finding (blocking): prev_para keyed on raw ul instead of consumed-as-underline → Addressed in 57898ce.
Reproduced first (===\n===\n @claude review returned true on e58369e), then applied the suggested consumed = (ul && prev_para) fix and verified it strips the chain case (false) without over-stripping the un-consumed-=== guards. Added a regression case (suite now 36) that fails against e58369e. Round 2's other two items were confirmed-fixed, no action needed.

shellcheck clean; no banned punctuation. Re-requesting review.

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Claude finished reviewView run


Review: PR #403fix(strip-non-invoking-markup): open an indented code block after a heading or thematic break

Round 3. The author's latest commit (57898ce) addresses the round 2 finding.

Round 2 finding — prev_para mistracking a chain of setext-underline-shaped lines: confirmed fixed.

The fix replaces the raw ul flag with an explicit consumed = (ul && prev_para), and keys both prev_opens_icode and prev_para off consumed rather than ul:

hd = heading_or_break(bare, indent)
ul = (indent <= 3 && is_setext_underline(bare))
consumed = (ul && prev_para)
prev_opens_icode = (blank || hd || consumed)
prev_para = (!blank && !hd && !consumed)

This is exactly the fix suggested in the round 2 inline comment. I hand-traced it against the exact repro from that finding (===\n===\n @claude review):

  • Line 1 ===: prev_para starts 0, so consumed=0 (correctly not consumed as an underline) — but now prev_para becomes 1 afterward (since !hd && !consumed = 1), correctly treating the line as ordinary paragraph text rather than forcing prev_para=0 as the old buggy version did.
  • Line 2 ===: prev_para=1 from line 1, so consumed=(ul&&prev_para)=1 — correctly consumed as the setext underline, producing prev_opens_icode=1.
  • Line 3 @claude review: opens as indented code and is stripped, matching the new test's expected output ===\n=== (the request line dropped).

I also re-traced the guard cases (bare =/- run at document start, after a blank line, after an ATX heading, the list-item disambiguation, and the single-dash/====== setext cases from round 2) against the new formula and all check out correctly — including that a thematic-break-shaped line (---, 3+ dashes) still forces prev_para=0 via hd=1 regardless of the ul/consumed path, which is the correct CommonMark resolution (a heading, whether reached via the thematic-break or setext-underline branch, is never itself paragraph text for a subsequent line to underline).

The new test case "chain of two = runs forms a heading, stripping the indented request" directly pins this scenario, and by trace it would have failed against the pre-fix (e58369e) version — the round 2 finding's own repro confirms that.

I was not able to execute the awk script directly in this sandboxed review environment (bash tool calls requiring shell execution were denied), consistent with round 2's own note; verification here is by manual trace against CommonMark 0.31.2 semantics, cross-checked line-by-line against the new test table's expected outputs.

I also checked the surrounding hunks in this diff (the in_fence/in_icode/blockquote branches, which changed from prev_blank = blank to unconditionally prev_opens_icode = 0; prev_para = 0) for a possible regression: those values are always re-overwritten on every subsequent line processed while still inside a fence/icode/blockquote context, so the change from "preserve raw blank state" to "hardcode 0" is behaviorally a no-op — not a new bug. No variable-naming collisions between the new hd/ul/consumed globals and the rest of the awk program.

Things checked and ruled out

  • No portability regression: is_setext_underline's regex uses only +/*, no {m,n} intervals, so it carries no risk beyond what round 1 already resolved for heading_or_break's ATX pattern.
  • Changelog fragment (changelog.d/strip-non-invoking-markup-block-predecessors.fixed.md) still accurately describes the overall user-facing fix; no additional fragment needed for this implementation-only correction within the same PR.
  • No new instances of prior review findings elsewhere in the diff.

Verdict

Ready for merge — both prior-round findings are confirmed fixed by commit 57898ce, with matching regression-test coverage, and I found no new issues in this round's changes.

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💰 Cost: $1.3499 (review) — run

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@d-morrison
d-morrison merged commit b39b226 into main Aug 4, 2026
30 checks passed
@d-morrison
d-morrison deleted the fix/strip-icode-after-block branch August 4, 2026 04:25
d-morrison added a commit to Morrison-Lab/ai-config that referenced this pull request Aug 4, 2026
…ha#403 cite

claude-review (#1131) round 1:
- Reworded the discharge sentence: the hook demands a Copilot request (the one
  action the override forbids), so honoring the override never satisfies it --
  replacing the imprecise 'lands a refusal not a verdict' framing (the hook keys
  on a recognized request call, not on a posted review).
- Dropped the 'Morrison-Lab/gha#403' citation: #403 is a Markdown-parsing fix,
  not a record of the hook collision, so citing it there was misleading.
d-morrison added a commit to Morrison-Lab/ai-config that referenced this pull request Aug 4, 2026
… is out (#1131)

* memory: while Copilot quota is out, unregister the no-unreviewed-pr Stop hook

Extends the #1129 note in memories/github.md. The no-unreviewed-pr.py Stop
hook (ai-config#1041) enforces the opposite instruction -- request Copilot
every turn -- so while the quota is out it fires each turn a PR awaits review
and cannot be discharged (the request lands the quota refusal, not a verdict).
Unregister it from ~/.claude/settings.json's Stop hooks until September 2026;
the script stays, only the local registration goes. A Morrison-Lab/gha session
spent over a dozen turns in this loop before it was recognized.

* review: reword hook-collision mechanism accurately; drop misleading gha#403 cite

claude-review (#1131) round 1:
- Reworded the discharge sentence: the hook demands a Copilot request (the one
  action the override forbids), so honoring the override never satisfies it --
  replacing the imprecise 'lands a refusal not a verdict' framing (the hook keys
  on a recognized request call, not on a posted review).
- Dropped the 'Morrison-Lab/gha#403' citation: #403 is a Markdown-parsing fix,
  not a record of the hook collision, so citing it there was misleading.
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strip-non-invoking-markup: indented code block after a non-paragraph block is not stripped

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