Re: [PATCH] t4069: test diff behavior with i-t-a paths

[Eric Sunshine <sunshine@sunshineco.com>]

On Mon, Aug 10, 2020 at 6:09 PM Junio C Hamano <gitster@pobox.com> wrote:
> Eric Sunshine <sunshine@sunshineco.com> writes:
> > This can be improved by taking advantage of the OID_REGEX variable
> > defined by the test suite for matching an OID. So something like this
> > would be even better:
> >
> >     cat >expect <<-\EOF &&
> >     diff --git a/test-file b/test-file
> >     index OID..OID 100644
> >     --- a/test-file
> >     +++ b/test-file
> >     EOF
> >     cat blueprint >test-file &&
> >     git diff --ita-visible-in-index -- test-file >raw &&
> >     sed "s/$OID_REGEX/OID/g" raw >actual &&
> >     test_cmp expect actual
>
> OID_REGEX is [0-9a-f]{40} while what is used here is [0-9a-f]{1,}.
> Unless --full-index is in use, they mean different things, no?

You're right, of course. The regex in the original example I gave was
too loose, matching even single hex letters in words like "index" and
"test-file", so I wanted to tighten it up, but I botched it with
OID_REGEX. Anyhow, I hope my examples convey the general idea (which
needs a bit of tweaking from what I showed).