Html

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These real terminal captures use a historical development build. They are not current release certification; independent output review and current installed-wheel scenario checks remain pending.

Overview

This worked example compares index.html. Advertised filename extensions: .html, .htm.

What changes

Add html lang=en, charset and viewport metadata; wrap existing heading in header and paragraph in main; retain title and visible text.

Before

<!DOCTYPE html>
<html>
<head>
  <title>My Page</title>
</head>
<body>
  <h1>Hello World</h1>
  <p>Welcome to my site.</p>
</body>
</html>

After

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>My Page</title>
</head>
<body>
  <header>
    <h1>Hello World</h1>
  </header>
  <main>
    <p>Welcome to my site.</p>
  </main>
</body>
</html>

Things to know

• Structural/accessibility and viewport changes are meaningful even though visible text is unchanged.

Recorded output

Recorded from a real native CLI through rs-rich-record. A refactoring label does not prove equivalent behavior. Build identities.

Scenario coverage

Scenario	Status
Meaningful edit	Source example reviewed; output captured; independent result certification pending
Unchanged content	Not yet certified for this candidate
Populate / clear a file	Not yet certified for this candidate
Add / delete an entity	Not yet certified for this candidate
Rename a symbol	Not yet certified for this candidate
Move / reorder code	Not yet certified for this candidate
Formatting only	Not yet certified for this candidate
Git file rename / move	Not yet certified for this candidate
Mixed move and edit	Not yet certified for this candidate
Invalid syntax / actionable error	Not yet certified for this candidate
Guardrail review	Not yet certified for this candidate

Try it

Save the two source blocks as separate files with the shown extension, then compare them:

intentumdiff file before/index.html after/index.html

The installed Python wheel includes its parser components. The native CLI requires a component directory. Compare the result with the source change described above; agreement between APIs alone is not proof of correctness.