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Re: [RFC] column: show auto columns when pager is active

On 10 October 2017 at 16:29, Jeff King <peff@xxxxxxxx> wrote:
> On Tue, Oct 10, 2017 at 10:10:19AM -0400, Jeff King wrote:
> it will randomly succeed or fail, depending on whether sed manages to
> read the input before the stdin terminal is closed.
> I'm not sure of an easy way to fix test-terminal, but we could work
> around it like this (which also uses "-p" to actually invoke the pager,
> and uses a pager that makes it clear when it's being run):
> diff --git a/t/t9002-column.sh b/t/t9002-column.sh
> index 9441145bf0..d322c3b745 100755
> --- a/t/t9002-column.sh
> +++ b/t/t9002-column.sh
> @@ -180,14 +180,14 @@ EOF
>  test_expect_success TTY '20 columns, mode auto, pager' '
>         cat >expected <<\EOF &&
> -one    seven
> -two    eight
> -three  nine
> -four   ten
> -five   eleven
> -six
> +paged:one    seven
> +paged:two    eight
> +paged:three  nine
> +paged:four   ten
> +paged:five   eleven
> +paged:six
>  EOF
> -       test_terminal env PAGER="cat|cat" git column --mode=auto <lista >actual &&
> +       test_terminal env PAGER="sed s/^/paged:/" sh -c "git -p column --mode=auto <lista" >actual &&
>         test_cmp expected actual
>  '
>  test_done

Makes sense. FWIW, I don't see the flakyness with this.

> All that said, I think I'd just as soon test a real command like "git
> tag", which doesn't care about reading from stdin.

For reference for Kevin, in case you consider testing, e.g., git tag,
the main reason I referred to the test I posted as "hacky", was that I
just inserted it at a more-or-less random place in t7006. So it had to
play with `git reset` to avoid upsetting the later tests. It could
obviously go to the end instead, but I was too lazy to move it and
define a pager.