From a8978a379c1a59e2fbc431d785d04f3922f5199f Mon Sep 17 00:00:00 2001
From: Bryce Kwon <bryce@brycekwon.com>
Date: Thu, 29 Oct 2026 14:37:25 -1000
Subject: Render more of the markdown seen in readmes

A line of equals signs or dashes under a paragraph now makes a heading
of it, as on GitHub, instead of running into its text, and any other
rule ends the paragraph. Four spaces or a tab start a code block, and an
escaped pipe stays in its table cell. A link opening with two slashes
or backslashes in any mix leads to another site, so it renders as text
like the plain scheme relative one already did.
---
 tests/extensions/test-about-render.lua | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

(limited to 'tests/extensions')

diff --git a/tests/extensions/test-about-render.lua b/tests/extensions/test-about-render.lua
index a493720..0571796 100644
--- a/tests/extensions/test-about-render.lua
+++ b/tests/extensions/test-about-render.lua
@@ -257,6 +257,26 @@ render("README.md", string.rep("# a\n", 50000))
 render("README.md", "| a | b |\n|---|---|\n| x" .. string.rep(" ", 40000) .. "y | z |")
 h.check("a long run of spaces is trimmed quickly", os.clock() - started < 10)
 
+out = render("README.md", "Title\n=====\n\nBody")
+h.contains("equals signs under a line make a heading", out, "<h1 id='title'>Title</h1><p>Body</p>")
+
+out = render("README.md", "Two\nlines\n---\nafter")
+h.contains("dashes under a paragraph make a heading of it all", out,
+	"<h2 id='two-lines'>Two lines</h2><p>after</p>")
+
+out = render("README.md", "text\n***\nmore")
+h.contains("a rule ends the paragraph above it", out, "<p>text</p><hr><p>more</p>")
+
+out = render("README.md", "Para\n\n    code line\n\tnext <line>\n\nafter")
+h.contains("an indented block renders as code", out,
+	"<p>Para</p><pre><code>code line\nnext &lt;line&gt;\n</code></pre><p>after</p>")
+
+out = render("README.md", "- item\n\n    more about it")
+h.excludes("an indented paragraph after a list stays prose", out, "<pre>")
+
+out = render("README.md", "[a](\\\\evil.example/x) [b](\\/evil.example/x)")
+h.excludes("a scheme relative link spelt with backslashes renders no anchor", out, "<a ")
+
 out = render("README.md", "| a | b |\n| --- | --- |\n| 1 | 2 |")
 h.contains("a pipe table renders its head", out, "<thead><tr><th>a</th><th>b</th></tr></thead>")
 h.contains("a pipe table renders its body", out, "<tbody><tr><td>1</td><td>2</td></tr></tbody>")
@@ -267,6 +287,12 @@ h.contains("a table cuts a paragraph short", out, "<p>Pick one:</p><table><thead
 out = render("README.md", "a | b in prose")
 h.excludes("a pipe without a delimiter row stays prose", out, "<table")
 
+out = render("README.md", "| a | b |\n|---|---|\n| x \\| y | `p \\| q` |")
+h.contains("an escaped pipe stays in its cell", out, "<td>x | y</td><td><code>p | q</code></td>")
+
+out = render("README.md", "| a | b |\n|---|---|\n| x \\\\| y |")
+h.contains("an escaped backslash still lets the pipe divide", out, "<td>x \\</td><td>y</td>")
+
 out = render("README.md", "- first\n- second")
 h.contains("dashes render an unordered list", out, "<ul><li>first</li><li>second</li></ul>")
 
-- 
cgit