Add one.

TODO.md

diff --git a/TODO.md b/TODO.md
index bd81107..a8911bf 100644
--- a/TODO.md
+++ b/TODO.md
@@ -97,6 +97,7 @@
 
 ## Test Case Issues
 
+* `incons-local-filename-short.zzip` doesn't test short filename, since extra fields fail to parse.
 * test error cases with special source
   - tell it which command should fail
   - use it both as source for `zip_add` and `zip_open_from_source`