From 6c775869607cc1041978518dfce5e9d5f3c8025c Mon Sep 17 00:00:00 2001
From: Tom Alexander <tom@fizz.buzz>
Date: Fri, 29 Sep 2023 22:27:31 -0400
Subject: [PATCH] Improve error message.

---
 src/compare/diff.rs | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/compare/diff.rs b/src/compare/diff.rs
index 1f7e1ce..5d68d32 100644
--- a/src/compare/diff.rs
+++ b/src/compare/diff.rs
@@ -512,7 +512,11 @@ pub fn compare_document<'s>(
                 .ok_or("Should have a corresponding heading.")?;
             child_status.push(compare_heading(rust.source, token, corresponding_heading)?);
         } else {
-            return Err("Document should only contain sections and headlines.".into());
+            return Err(format!(
+                "Document should only contain sections and headlines, found: {}",
+                first_cell
+            )
+            .into());
         }
     }