Only allow specific keywords for affiliated keywords.

src/compare/diff.rs

@@ -120,7 +120,7 @@ impl<'s> DiffResult<'s> {
             indentation = "  ".repeat(indentation),
             status_text = status_text,
             name = self.name,
-            char_offset = rust_offset,
+            char_offset = rust_offset + 1,
             message = self.message.as_ref().map(|m| m.as_str()).unwrap_or("")
         );
         for child in self.children.iter() {