Problem: Various inconsistencies in test files.
Solution: Add modelines where they were missing. Use Check commands instead
of silently skipping over tests. Adjust indents and comments.
(Ken Takata, closes#6695)
Problem: ml_get error with :psearch in buffer without a name. (Dominique
Pelle)
Solution: Use the buffer number instead of the file name. Check the cursor
position.
