Re: [PATCH 2/2] filter-branch: fail gracefully when a filter fails

From: Johannes Sixt <j.sixt@eudaptics.com>
Date: Jul 6, 2007, 07:06 UTC
Message-ID: <468DE9F3.B4489CDE@eudaptics.com>
In-Reply-To: <Pine.LNX.4.64.0707051636240.9789@racer.site>

Johannes Schindelin wrote:

Show 11 quoted lines

> -       sed -e '1,/^$/d' <../commit | \
> -               eval "$filter_msg" | \
> -               sh -c "$filter_commit" "git commit-tree" $(git write-tree) \
> -                       $parentstr > ../map/$commit
> +       (sed -e '1,/^$/d' <../commit |
> +               (eval "$filter_msg" ||
> +                die "msg filter failed: $filter_msg" 2>&3) |
> +               (sh -c "$filter_commit" "git commit-tree" $(git write-tree) \
> +                       $parentstr > ../map/$commit ||
> +                die "commit filter failed: $filter_commit" 2>&3)) 3>&1 |
> +        grep . && die

You introduce a handful of new forks and an exec. Isn't an intermediate file much cheaper?

-- Hannes