Dirk Wallenstein <hals...@t-online.de> writes:

> When an invalid revision is specified, the error message is:
>
>     fatal: Needed a single revision
>
> This is misleading because, you might think there is something wrong
> with the command line as a whole.
>
> Now the user gets a more meaningful error message, showing the invalid
> revision.
>
> Signed-off-by: Dirk Wallenstein <hals...@t-online.de>
> ---
>
> Notes:
>     I assume, it is not worth the trouble to even try to change the message 
> from
>     rev-parse for this.  People might parse the messages, which is probably 
> why
>     this message still exists.

You are right---such a change will break existing scripts, so it is
not just "not worth the trouble" but is actively wrong to change the
error message.

>  git-request-pull.sh | 14 ++++++++++++--
>  1 file changed, 12 insertions(+), 2 deletions(-)
>
> diff --git a/git-request-pull.sh b/git-request-pull.sh
> index d566015..f38f0f9 100755
> --- a/git-request-pull.sh
> +++ b/git-request-pull.sh
> @@ -51,8 +51,18 @@ fi
>  tag_name=$(git describe --exact "$head^0" 2>/dev/null)
>  
>  test -n "$base" && test -n "$url" || usage
> -baserev=$(git rev-parse --verify "$base"^0) &&
> -headrev=$(git rev-parse --verify "$head"^0) || exit
> +
> +baserev=$(git rev-parse --verify "$base"^0 2>/dev/null)

Use "--quiet" instead?

> +if test -z "$baserev"
> +then
> +    die "fatal: Not a valid revision: $base"
> +fi
> +
> +headrev=$(git rev-parse --verify "$head"^0 2>/dev/null)
> +if test -z "$headrev"
> +then
> +    die "fatal: Not a valid revision: $head"
> +fi
>  
>  merge_base=$(git merge-base $baserev $headrev) ||
>  die "fatal: No commits in common between $base and $head"
--
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