BEGIN TEST
  Leading spaces (2) + trailing spaces (2)··
TAB_LITERAL: [START]	[END]   (there is a real TAB between)

Raw escape-like text: \n \r \t \\n \\r \\t \\x00 \\x1f \\x7f \\xff \u0000 \u202E \u200F \u200E
Bytes-ish hex: e5 bd 93 e7 84 b6 | 00 1f 7f ff | 0x00 0x1F 0x7F 0xFF | b"\x00\x1f\x7f\xff"

HTML tags (should render as text, not tags):
<think></think> <think>inner</think> <script>alert('x')</script> <style>body{color:red}</style>
<div class="x" data-x="1 & 2">Hello</div> <span>Span</span> <a href="https://example.com?q=1&x=<tag>">link</a>
<img src=x onerror=alert(1)> <br> <hr> <p>para</p> <table><tr><td>cell</td></tr></table>
Nested-ish: </span><span data-x="</span>">confuse</span>

HTML entities:
&lt;think&gt; &lt;/think&gt; &amp; &quot; &#39; &nbsp; &#10; &#x3C; &#x3E; &#x26;

Markdown-ish:
# H1
## H2
- list item 1
- list item 2
> blockquote
--- (three hyphens)

Languages:
中文 简体/繁體 日本語 かな カタカナ 한국어 العربية עברית हिन्दी ไทย Русский Ελληνικά Español Français Português Türkçe Việt
RTL mix: العربية ABC עברית 123 (mixed direction)