From 2a34b90d1e47dfdcdf513f0bfc3baa914baaffd8 Mon Sep 17 00:00:00 2001
From: Bryce Kwon <bryce@brycekwon.com>
Date: Fri, 16 Oct 2026 18:04:13 -1000
Subject: Keep underscores inside words out of emphasis

---
 tests/extensions/test-about-render.lua | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'tests/extensions/test-about-render.lua')

diff --git a/tests/extensions/test-about-render.lua b/tests/extensions/test-about-render.lua
index e84c854..3925dfd 100644
--- a/tests/extensions/test-about-render.lua
+++ b/tests/extensions/test-about-render.lua
@@ -108,6 +108,12 @@ out = render("README.md", "an __up__ and _down_ word")
 h.contains("double underscores embolden", out, "<strong>up</strong>")
 h.contains("single underscores lean", out, "<em>down</em>")
 
+out = render("README.md", "snake_case_name and _lean_ and foo__bar__")
+h.contains("underscores inside words stay literal", out, "<p>snake_case_name and <em>lean</em> and foo__bar__</p>")
+
+out = render("README.md", "_a_b_ and __c_d__")
+h.contains("emphasis spans an underscore inside a word", out, "<p><em>a_b</em> and <strong>c_d</strong></p>")
+
 out = render("README.md", "\\*not leaning\\* and \\# and \\q")
 h.contains("a backslash makes punctuation literal", out, "<p>*not leaning* and # and \\q</p>")
 
-- 
cgit