debian/changelog

-diffoscope (227) UNRELEASED; urgency=medium
+diffoscope (227) unstable; urgency=medium
 
-  * WIP (generated upon release).
+  [ Chris Lamb ]
+  * Don't attempt to attach text-only differences notice if there are no
+    differences to begin with. (Closes: #1024171, #1024349)
+  * Don't run Python decompiling tests on Python bytecode that both file(1)
+    cannot yet detect and Python 3.11 cannot demarshall. (Closes: #1024335)
 
- -- Chris Lamb <lamby@debian.org>  Fri, 04 Nov 2022 06:59:43 +0000
+ -- Chris Lamb <lamby@debian.org>  Fri, 18 Nov 2022 09:38:34 +0000
 
 diffoscope (226) unstable; urgency=medium
 

diffoscope/__init__.py

@@ -17,4 +17,4 @@
 # You should have received a copy of the GNU General Public License
 # along with diffoscope.  If not, see <https://www.gnu.org/licenses/>.
 
-VERSION = "226"
+VERSION = "227"

diffoscope/comparators/html.py

@@ -39,6 +39,9 @@ class HtmlFile(TextFile):
     def compare(self, other, source=None):
         difference = super().compare(other, source)
 
+        if difference is None:
+            return difference
+
         # Show text-only differences as a sub-diff.
         try:
             text = Difference.from_operation(Htmltotext, self.path, other.path)

tests/comparators/test_python.py

@@ -53,8 +53,8 @@ def differences(pyc1, pyc2):
 
 @skip_unless_file_version_is_at_least("5.39")
 @skipif(
-    sys.version_info < (3, 8),
-    reason="Python 3.7 cannot de-marshal test1.pyc-renamed",
+    sys.version_info[:2] not in {(3, 9), (3, 10)},
+    reason="Only Python 3.9 and 3.10 can de-marshal test1.pyc-renamed",
 )
 def test_diff(differences):
     assert_diff_startswith(