From f759052ad0c97fccca67fa7e1a31eebd9c1bf3c4 Mon Sep 17 00:00:00 2001
From: A Farzat <a@farzat.xyz>
Date: Sun, 7 Jun 2026 18:33:26 +0300
Subject: Detect python and json files

---
 src/renderer.rs | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/src/renderer.rs b/src/renderer.rs
index 6193680..eb39c76 100644
--- a/src/renderer.rs
+++ b/src/renderer.rs
@@ -145,6 +145,8 @@ fn human_readable_size(bytes: u64) -> String {
 fn detect_language(filename: &Path) -> &'static str {
     match filename.extension().and_then(|e| e.to_str()) {
         Some("rs") => "rust",
+        Some("py") => "python",
+        Some("json") => "json",
         _ => "",
     }
 }
@@ -238,6 +240,30 @@ mod tests {
         assert_eq!(String::from_utf8(output).unwrap(), expected);
     }
 
+    #[test]
+    fn python_file_has_python_language_fence() {
+        let mut output = Vec::new();
+        let mut renderer = Renderer::new(&mut output);
+
+        let input = Cursor::new("print('hello')");
+        renderer.render_file(Path::new("main.py"), input).unwrap();
+        let expected = "\n## File: main.py\n```python\nprint('hello')\n```\n";
+
+        assert_eq!(String::from_utf8(output).unwrap(), expected);
+    }
+
+    #[test]
+    fn json_file_has_json_language_fence() {
+        let mut output = Vec::new();
+        let mut renderer = Renderer::new(&mut output);
+
+        let input = Cursor::new("{\"key\":\"value\"}");
+        renderer.render_file(Path::new("main.json"), input).unwrap();
+        let expected = "\n## File: main.json\n```json\n{\"key\":\"value\"}\n```\n";
+
+        assert_eq!(String::from_utf8(output).unwrap(), expected);
+    }
+
     #[test]
     fn renderer_places_placeholder_for_large_files_by_default() {
         let mut output = Vec::new();
-- 
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