Jeff King wrote:

When I want to debug a failing test, I often end up doing:

  cd t
  ./t4107-<tab> -v -i
  cd tra<tab>

The test names are long, so tab-completing on the trash directory is
very helpful. Lately I've noticed that there are a bunch of crufty trash
directories in my t/ directory, which makes my tab-completion more
annoying.

Ah, and if I'd read this then I wouldn't have had to be confused at
all.  Would it work to replace the commit message with something like
this?

Thanks,
Jonathan