1. Configure Diff mode to enable font lock prettify:

(add-hook 'diff-mode-hook #'(lambda ()
			      (setq diff-font-lock-prettify t)))

2. Visit the recent change log of emacs sources (eg C-x v L when
visiting one of emacs source file)

3. Find commit 3d38d1d134 and call log-view-diff

4. Jump to line 245 for the chunk applying to lisp/sqlite.el

5. Observe the strange line:

new file   lisp/sqlite.ellisp/sqlite.el

where "new file   lisp/sqlite.el" is expected.