{
  "id": "demo-blog-engine/adding-syntax-highlighting",
  "slug": "adding-syntax-highlighting",
  "title": "Session: adding-syntax-highlighting — 2026-03-18",
  "type": "source",
  "project": "demo-blog-engine",
  "date": "2026-03-18",
  "started": "2026-03-18T14:20:00+00:00",
  "ended": "2026-03-18T16:05:42+00:00",
  "model": "claude-sonnet-4-6",
  "cwd": "/Users/demo/code/demo-blog-engine",
  "git_branch": "feat/syntax-highlight",
  "permission_mode": "default",
  "user_messages": "4",
  "tool_calls": "12",
  "tools_used": [
    "Read",
    "Edit",
    "Bash",
    "Grep"
  ],
  "is_subagent": "false",
  "wikilinks_out": [
    "SyntaxHighlighting",
    "demo-blog-engine",
    "pulldown-cmark",
    "syntect"
  ],
  "body_text": "Project: demo-blog-engine · Branch: feat/syntax-highlight · Mode: default · Model: claude-sonnet-4-6\n\nSummary\n\nAdded syntax highlighting to the blog via syntect. Wired it into the pulldown-cmark code-block callback so fenced code with a language hint gets inline-highlighted HTML. Chose the base16-ocean.dark theme as the default.\n\nConversation\n\nTurn 1 — User\n\nAdd syntax highlighting to code blocks. Use syntect.\n\nTurn 1 — Assistant\n\nPlan:\n1. Add syntect = \"5\" to Cargo.toml\n2. Load default syntax + theme sets once at startup\n3. In the pulldown-cmark parser, intercept Event::Start(CodeBlock) and replace the body with highlighted_html_for_string\n\nThe tricky bit is that pulldown-cmark gives us the code as an Event::Text inside the code-block range, so we need to buffer events between Start(CodeBlock(..)) and End(CodeBlock), then emit a single Html event with the highlighted output.\n\nTools used in this turn:\n- Edit: Cargo.toml — added syntect = \"5\"\n- Read: src/render.rs (1–80)\n\nTurn 2 — User\n\nSounds right, go ahead.\n\nTurn 2 — Assistant\n\nWired it up. Using ClassedHTMLGenerator so we emit class=\"syntect\" and style via an external CSS file rather than inline colours (plays nicer with dark-mode toggle later).\n\nTools used in this turn:\n- Edit: src/render.rs — added highlight_block() helper\n- Bash: cargo build — exit 0\n- Bash: cargo run — exit 0\n\nConnections\n\n- demo-blog-engine — project\n- syntect — library\n- pulldown-cmark — library\n- SyntaxHighlighting — concept",
  "sha256": "f4a6146c70ceb1a9",
  "source_url": "sessions/demo-blog-engine/adding-syntax-highlighting.html"
}