From a39e0a651657046f3b936d842147fa51523b6818 Mon Sep 17 00:00:00 2001
From: Matt Sturgeon <matt@sturgeon.me.uk>
Date: Fri, 14 Feb 2025 10:10:37 +0000
Subject: [PATCH] docs/fix-links: handle `#anchor` targets on the same page

---
 docs/fix-links/filter.lua | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/docs/fix-links/filter.lua b/docs/fix-links/filter.lua
index d17f19fb..3a320187 100644
--- a/docs/fix-links/filter.lua
+++ b/docs/fix-links/filter.lua
@@ -18,9 +18,13 @@ function Link(link)
 	local target = link.target
 	-- Check for relative links
 	-- TODO: handle ../
-	if hasPrefix("./", target) then
-		link.target = githubUrl .. sub(target, 3)
-		return link
+	while hasPrefix("./", target) do
+		-- strip leading ./
+		target = sub(target, 3)
+	end
+	if hasPrefix("#", target) then
+		-- No-op for anchor targets on the same page
+		return nil
 	end
 	if not hasPrefix("https://", target) then
 		link.target = githubUrl .. target