From 20a1c652f61437ac35ce85ef8a66ae93fd64b3d0 Mon Sep 17 00:00:00 2001
From: gl0w <gl0w@world>
Date: Thu, 10 Sep 2026 07:33:15 +0100
Subject: [PATCH] m6/readme-bug: extensionless chain + regression tests

---
 src/build.rs | 80 ++++++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 78 insertions(+), 2 deletions(-)

diff --git a/src/build.rs b/src/build.rs
index 5083fa7..0cf0a67 100644
--- a/src/build.rs
+++ b/src/build.rs
@@ -147,8 +147,9 @@ pub fn resolve_clone_url(repo: &Path, flag: Option<&str>) -> Option<String> {
 }
 
 /// README lookup chain (f0rge convention): repo-root `README.md` >
-/// `readme.md` > `README`, else `.forge/wiki/README.md` >
-/// `.forge/wiki/readme.md`, else none.
+/// `readme.md` > `README` > `readme`, else `.forge/wiki/README.md` >
+/// `.forge/wiki/readme.md` > `.forge/wiki/README` > `.forge/wiki/readme`,
+/// else none.
 ///
 /// Returns the winning path plus its blob.
 pub fn find_readme(repo: &Path, branch: &str) -> Option<(String, gitx::Blob)> {
@@ -156,8 +157,11 @@ pub fn find_readme(repo: &Path, branch: &str) -> Option<(String, gitx::Blob)> {
         "README.md",
         "readme.md",
         "README",
+        "readme",
         ".forge/wiki/README.md",
         ".forge/wiki/readme.md",
+        ".forge/wiki/README",
+        ".forge/wiki/readme",
     ] {
         if let Ok(blob) = gitx::show(repo, branch, Path::new(candidate)) {
             return Some((candidate.to_string(), blob));
@@ -946,6 +950,78 @@ mod tests {
         assert_eq!(path, "README.md");
     }
 
+    #[test]
+    fn readme_chain_shows_extensionless_wiki_readme() {
+        let dir = mktemp("readme-extless");
+        git(&dir, &["init", "-b", "main"]);
+        git(&dir, &["config", "user.name", "hu13-test"]);
+        git(&dir, &["config", "user.email", "hu13@test.local"]);
+        git(&dir, &["config", "commit.gpgsign", "false"]);
+        // Extensionless wiki README only (f0rge issue #35).
+        std::fs::create_dir_all(dir.join(".forge").join("wiki")).unwrap();
+        std::fs::write(
+            dir.join(".forge").join("wiki").join("README"),
+            "# Wiki extless\n",
+        )
+        .unwrap();
+        std::fs::write(dir.join("notes.txt"), "x\n").unwrap();
+        git(&dir, &["add", "-A"]);
+        git(&dir, &["commit", "-m", "wiki extless only"]);
+        let (path, _) = find_readme(&dir, "main").expect("wiki extless fallback");
+        assert_eq!(path, ".forge/wiki/README");
+        // Code tab renders it.
+        let out = mktemp("out-extless");
+        run_build(&dir, &out, &opts()).expect("build");
+        let index = std::fs::read_to_string(out.join("index.html")).expect("index");
+        assert!(index.contains("Wiki extless"), "code tab shows wiki README");
+        assert!(
+            index.contains("from <code>.forge/wiki/README</code>"),
+            "code tab names source"
+        );
+    }
+
+    #[test]
+    fn readme_chain_full_priority_order() {
+        let dir = mktemp("readme-priority");
+        git(&dir, &["init", "-b", "main"]);
+        git(&dir, &["config", "user.name", "hu13-test"]);
+        git(&dir, &["config", "user.email", "hu13@test.local"]);
+        git(&dir, &["config", "commit.gpgsign", "false"]);
+        let chain = [
+            "README.md",
+            "readme.md",
+            "README",
+            "readme",
+            ".forge/wiki/README.md",
+            ".forge/wiki/readme.md",
+            ".forge/wiki/README",
+            ".forge/wiki/readme",
+        ];
+        std::fs::create_dir_all(dir.join(".forge").join("wiki")).unwrap();
+        for (i, cand) in chain.iter().enumerate() {
+            std::fs::write(dir.join(cand), format!("# marker {i}\n")).unwrap();
+        }
+        std::fs::write(dir.join("notes.txt"), "x\n").unwrap();
+        git(&dir, &["add", "-A"]);
+        git(&dir, &["commit", "-m", "all readmes"]);
+        for (i, want) in chain.iter().enumerate() {
+            let (path, blob) = find_readme(&dir, "main").expect("readme present");
+            assert_eq!(&path, want, "priority position {i}");
+            assert!(
+                blob.display.contains(&format!("marker {i}")),
+                "winning body at {want}"
+            );
+            // Root extensionless beats wiki once wiki-only remains.
+            if *want == "readme" {
+                let (p, _) = find_readme(&dir, "main").expect("root extless");
+                assert_eq!(p, "readme");
+            }
+            git(&dir, &["rm", "-q", want]);
+            git(&dir, &["commit", "-m", &format!("drop {want}")]);
+        }
+        assert!(find_readme(&dir, "main").is_none(), "none when chain empty");
+    }
+
     #[test]
     fn build_emits_commits_and_wiki() {
         let repo = fixture_repo();
-- 
2.55.0