* "git diff --no-index" did not work with pagers correctly.
* "git diff COPYING HEAD:COPYING" gave a nonsense error message that
- claimed that the treeish HEAD did not have COPYING in it.
+ claimed that the tree-ish HEAD did not have COPYING in it.
* When "git log" gets "--simplify-merges/by-decoration" together with
"--first-parent", the combination of these options makes the