• In a freshly created repository "rev-parse HEAD^0" complained that it is dangling symref, even though "rev-parse HEAD" didn’t.

• "git show :no-such-name" tried to access the index without bounds check, leading to a potential segfault.

• Message from "git cherry-pick" was harder to read and use than necessary when it stopped due to conflicting changes.

• We referred to ".git/refs/" throughout the documentation when we meant to talk about abstract notion of "ref namespace". Because people’s repositories often have packed refs these days, this was confusing.

• "git diff --output=/path/that/cannot/be/written" did not correctly error out.

• "git grep -e -pattern-that-begin-with-dash paths…​" could not be spelled as "git grep — -pattern-that-begin-with-dash paths…​" which would be a GNU way to use "--" as "end of options".

• "git grep" compiled with threading support tried to access an uninitialized mutex on boxes with a single CPU.

• "git stash pop -q --index" failed because the unnecessary --index option was propagated to "git stash drop" that is internally run at the end.

And other minor fixes and documentation updates.