tindex: Amend last commit a bit.

When you run `git log foo` foo can be, from git-log(1),
`[<revision range>] [[--] <path>...]`, so, may things.

- A "revision range" described by gitrevision(7) (don't got there unless
  you have a few hours, or already lost your sanity), which can be :
  * a commit hash,
  * a tag
  * a branch,
  * a ref name
  * a "describe output"
  * and many other ways to describe revisions
  * a range made by any of the above
- An existing path.

When it can't find any of those, git figures out that you meant
something else and made a typo, and exits.

If you really meant a path, you have to run `git log -- foo`. Then git
knows that you meant a path and only a path, it will then assume that
you knew what you meant, and will go look in the history.

0 files changed, 0 insertions, 0 deletions