From: Junio C Hamano <gitster@pobox.com>
Date: Wed, 30 Jan 2008 06:40:37 GMT
Subject: Re: [PATCH 1/7] Use 'printf %s $x' notation in t5401
Message-ID: <7vlk67izoa.fsf@gitster.siamese.dyndns.org>
In-Reply-To: <20080130062156.GA15838@spearce.org>

"Shawn O. Pearce" <spearce@spearce.org> writes:

> We only care about getting what should be an empty string and
> sending it to a file, without a trailing LF, so the empty string
> translates into a 0 byte file.  Earlier when I originally wrote
> these lines Mac OS X allowed the format string of printf to be
> the empty string, but more recent versions appear to have been
> 'improved' with error messages if the format is not given.

That sounds like a bug to me.

> diff --git a/t/t5401-update-hooks.sh b/t/t5401-update-hooks.sh
> index 3eea306..9734fc5 100755
> --- a/t/t5401-update-hooks.sh
> +++ b/t/t5401-update-hooks.sh
> @@ -25,7 +25,7 @@ test_expect_success setup '
>  
>  cat >victim/.git/hooks/pre-receive <<'EOF'
>  #!/bin/sh
> -printf "$@" >>$GIT_DIR/pre-receive.args
> +printf %s "$@" >>$GIT_DIR/pre-receive.args

Do you really mean this? "printf %s 1 2 3" writes "123" without
terminating LF.  You seem to check only for size but to be
reusable you might want to use something like:

	printf '%s\n' "$@"

Likewise for post-receive.args.