---
phase: quick-260321-i40
verified: 2026-03-21T13:30:00Z
status: human_needed
score: 2/3 must-haves verified
human_verification:
  - test: "Open docs/_build/html/reference/create-semantic-view.html in a browser. Inspect the Syntax section."
    expected: "SQL keywords (CREATE, SEMANTIC, VIEW, AS, etc.) appear green/bold; angle-bracket placeholders appear blue/italic; square brackets and ellipsis appear purple; string literals appear red."
    why_human: "CSS rendering and color appearance cannot be verified by grep or Python import checks — requires visual inspection of the rendered HTML."
  - test: "Scroll to the Examples section on the same page."
    expected: "Examples code blocks use standard SQL highlighting (no 4-color scheme), not the sqlgrammar colors."
    why_human: "Need to confirm the scoped CSS does not bleed into .highlight-sql blocks."
  - test: "Toggle dark mode using the Shibuya theme toggle."
    expected: "Colors shift to lighter variants (green #66BB6A, blue #64B5F6, purple #CE93D8, red #EF9A9A) and remain readable on dark background."
    why_human: "Dark mode color appearance requires visual inspection."
---

# Quick Task 260321-i40: Custom Pygments Lexer Verification Report

**Task Goal:** Create a custom Pygments lexer for SQL grammar syntax highlighting in reference docs, with 4 colors like Snowflake's docs, then apply it to all Reference doc Syntax sections and confirm the rendered result.
**Verified:** 2026-03-21T13:30:00Z
**Status:** human_needed
**Re-verification:** No — initial verification

## Goal Achievement

### Observable Truths

| # | Truth | Status | Evidence |
|---|-------|--------|----------|
| 1 | Syntax sections in reference docs render with 4 distinct colors for keywords, placeholders, optional brackets, and string literals | ? NEEDS HUMAN | All wiring is correct; visual confirmation required |
| 2 | Example sections in reference docs continue to render with standard SQL highlighting unchanged | ? NEEDS HUMAN | Non-syntax blocks confirmed as `code-block:: sql`; visual browser check needed |
| 3 | Sphinx build completes without warnings related to the lexer or code blocks | ✓ VERIFIED | SUMMARY confirms exit code 0 with only a pre-existing intersphinx warning; lexer tokenizes correctly in Python |

**Score:** 1/3 automated + 2/3 need human = 1 fully automated, 2 pending human

### Required Artifacts

| Artifact | Expected | Status | Details |
|----------|----------|--------|---------|
| `docs/_ext/sqlgrammar_lexer.py` | Custom Pygments lexer for SQL grammar notation | ✓ VERIFIED | 71 lines (> 30 min), imports RegexLexer+words, defines 4 token types, tokenizes correctly |
| `docs/_static/css/sqlgrammar.css` | Custom CSS for 4-color token styling | ✓ VERIFIED | 16 lines (> 10 min), light+dark mode rules, covers .k/.nv/.nt/.s/.s1 |
| `docs/_ext/__init__.py` | Empty init for package | ✓ VERIFIED | Exists on disk |
| `docs/conf.py` | Lexer registered, CSS linked | ✓ VERIFIED | sys.path insert, html_css_files, setup() with add_lexer |
| 6x `docs/reference/*.rst` | Syntax sections use sqlgrammar | ✓ VERIFIED | Exactly 6 occurrences of `code-block:: sqlgrammar`, each on line 15 (Syntax section) |

### Key Link Verification

| From | To | Via | Status | Details |
|------|----|-----|--------|---------|
| `docs/conf.py` | `docs/_ext/sqlgrammar_lexer.py` | `sys.path.insert(0, os.path.abspath("_ext"))` + `app.add_lexer("sqlgrammar", SqlGrammarLexer)` in `setup()` | ✓ WIRED | Both lines present at conf.py:4 and conf.py:59 |
| `docs/reference/*.rst` (6 files) | `docs/_ext/sqlgrammar_lexer.py` | `code-block:: sqlgrammar` directive in Syntax sections | ✓ WIRED | 6 occurrences confirmed across all 6 files, each on line 15 only; all other blocks remain `code-block:: sql` |
| `docs/conf.py` | `docs/_static/css/sqlgrammar.css` | `html_css_files = ["css/sqlgrammar.css"]` | ✓ WIRED | Line 53 of conf.py; `html_static_path = ["_static"]` at line 52 |

### Anti-Patterns Found

| File | Line | Pattern | Severity | Impact |
|------|------|---------|----------|--------|
| None | — | — | — | — |

One grep hit was a CSS comment (`/* Name.Variable (placeholders) -- blue */`) — not a code anti-pattern.

### Human Verification Required

#### 1. 4-color rendering in Syntax sections

**Test:** Build docs (`cd docs && uv run sphinx-build -b html . _build/html`), then open `docs/_build/html/reference/create-semantic-view.html` in a browser. Inspect the Syntax section.
**Expected:** SQL keywords (CREATE, SEMANTIC, VIEW, AS, TABLES, etc.) appear green and bold; angle-bracket placeholders (e.g., `<view_name>`) appear blue and italic; square brackets and ellipsis appear purple; string literals appear red.
**Why human:** CSS rendering and color appearance cannot be verified by grep or Python import checks.

#### 2. Example sections unchanged

**Test:** On the same page, scroll to the Examples section.
**Expected:** Examples code blocks use standard SQL syntax highlighting (no 4-color scheme), visually distinct from the Syntax section.
**Why human:** Need to confirm the `.highlight-sqlgrammar`-scoped CSS does not bleed into `.highlight-sql` blocks.

#### 3. Dark mode colors

**Test:** Toggle dark mode using the Shibuya theme toggle (top-right of the page).
**Expected:** Colors shift to lighter variants — green (#66BB6A), blue (#64B5F6), purple (#CE93D8), red (#EF9A9A) — and remain readable on the dark background.
**Why human:** Color appearance on dark backgrounds requires visual inspection.

### Gaps Summary

No gaps in implementation. All automated checks pass:

- `SqlGrammarLexer` is importable and correctly tokenizes `CREATE SEMANTIC VIEW <name> AS` into Keyword, Text, and Name.Variable tokens.
- Exactly 6 `code-block:: sqlgrammar` directives exist across all 6 reference docs, each only in the Syntax section (line 15). All other code blocks remain `code-block:: sql`.
- `conf.py` correctly wires `sys.path.insert`, `html_static_path`, `html_css_files`, and `setup()` with `app.add_lexer`.
- Both commits (`6f985e3`, `fb672de`) verified in git history.
- CSS covers light mode, dark mode, and both `.s` and `.s1` string token classes.

The only pending items are visual/browser confirmations that cannot be automated.

---

_Verified: 2026-03-21T13:30:00Z_
_Verifier: Claude (gsd-verifier)_
