From ff80b906d0d76e5d3f47230fa7649a7d855dd6e8 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Thu, 24 Mar 2022 11:39:31 +0530
Subject: [PATCH] Report full traceback when highlighting fails

---
 kittens/diff/highlight.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/kittens/diff/highlight.py b/kittens/diff/highlight.py
index 0a1eb502d..7272f8984 100644
--- a/kittens/diff/highlight.py
+++ b/kittens/diff/highlight.py
@@ -167,7 +167,9 @@ def highlight_collection(collection: Collection, aliases: Optional[Dict[str, str
             try:
                 highlights = future.result()
             except Exception as e:
-                return f'Running syntax highlighting for {path} generated an exception: {e}'
+                import traceback
+                tb = traceback.format_exc()
+                return f'Running syntax highlighting for {path} generated an exception: {e} with traceback:\n{tb}'
             ans[path] = highlights
     return ans