# [PATCH] t0001: check syntax of sample hooks

3 messages from 2010-04-19 to 2010-04-19. Participants: Jonathan Nieder, Junio C Hamano.
Thread: https://gitlist.dev/t/23523

## Jonathan Nieder, 2010-04-19 08:41

Subject: [PATCH] t0001: check syntax of sample hooks
Message-ID: <20100419084132.GA25901@progeny.tock>
URL: https://gitlist.dev/e/20100419084132.GA25901%40progeny.tock

```
Make sure that the sample hooks do not use any shell features
that the shell used to execute them does not support.

The documentation at the end of the sample pre-rebase script will
never be executed, but "sh -n" does not know that.  Convert it to
a HERE document to avoid spurious failures.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
---
I guess this serves as a test for 502be95 (Make templates honour
SHELL_PATH and PERL_PATH, 2010-03-20).

Actually, my motivation is the second part, since I already run a test
like this locally.  But I thought, while fixing it, why not make it
easy for others to suffer the same problem, too?

 t/t0001-init.sh                    |   15 +++++++++++++++
 templates/hooks--pre-rebase.sample |    3 +++
 2 files changed, 18 insertions(+), 0 deletions(-)

diff --git a/t/t0001-init.sh b/t/t0001-init.sh
index 6757734..3e6e1ed 100755
--- a/t/t0001-init.sh
+++ b/t/t0001-init.sh
@@ -141,6 +141,21 @@ test_expect_success 'reinit' '
 	test_cmp again/empty again/err2
 '
 
+test_expect_success 'sample hooks use acceptable syntax' '
+	mkdir boring &&
+	git init boring &&
+	test -d boring/.git/hooks &&
+	fail=f &&
+	for i in boring/.git/hooks/*.sample
+	do
+		read shebang <"$i" &&
+		shell=${shebang#"#!"} &&
+		$shell -n "$i" ||
+		fail=t
+	done &&
+	test "$fail" = f
+'
+
 test_expect_success 'init with --template' '
 	mkdir template-source &&
 	echo content >template-source/file &&
diff --git a/templates/hooks--pre-rebase.sample b/templates/hooks--pre-rebase.sample
index 053f111..22a9f07 100755
--- a/templates/hooks--pre-rebase.sample
+++ b/templates/hooks--pre-rebase.sample
@@ -91,6 +91,7 @@ fi
 exit 0
 
 ################################################################
+cat <<\EOF
 
 This sample hook safeguards topic branches that have been
 published from being rewound.
@@ -167,3 +168,5 @@ To compute (2):
 	git rev-list master..topic
 
 	if this is empty, it is fully merged to "master".
+
+EOF
-- 
1.7.1.rc1

```

## Junio C Hamano, 2010-04-19 20:52

Subject: Re: [PATCH] t0001: check syntax of sample hooks
Message-ID: <7v633nqi6i.fsf@alter.siamese.dyndns.org>
URL: https://gitlist.dev/e/7v633nqi6i.fsf%40alter.siamese.dyndns.org
In-Reply-To: <20100419084132.GA25901@progeny.tock>

```
Jonathan Nieder <jrnieder@gmail.com> writes:

> diff --git a/t/t0001-init.sh b/t/t0001-init.sh
> index 6757734..3e6e1ed 100755
> --- a/t/t0001-init.sh
> +++ b/t/t0001-init.sh
> @@ -141,6 +141,21 @@ test_expect_success 'reinit' '
>  	test_cmp again/empty again/err2
>  '
>  
> +test_expect_success 'sample hooks use acceptable syntax' '
> +	mkdir boring &&
> +	git init boring &&
> +	test -d boring/.git/hooks &&
> +	fail=f &&
> +	for i in boring/.git/hooks/*.sample
> +	do
> +		read shebang <"$i" &&
> +		shell=${shebang#"#!"} &&
> +		$shell -n "$i" ||

"#!/Program  Files/bin/shell"???

I think, after observing what this outputs,

    $ echo 'a  b c' | (read shebang; echo "<$shebang>")

you would need something like this:

	shell=$(sed -e '1{
        	s/^#!//p
                q
	}' "$i") &&
        "$shell" -n "$i"

> diff --git a/templates/hooks--pre-rebase.sample b/templates/hooks--pre-rebase.sample
> index 053f111..22a9f07 100755
> --- a/templates/hooks--pre-rebase.sample
> +++ b/templates/hooks--pre-rebase.sample
> @@ -91,6 +91,7 @@ fi
>  exit 0
>  
>  ################################################################
> +cat <<\EOF

No need to meow here; just say ":" instead.

>  This sample hook safeguards topic branches that have been
>  published from being rewound.
> @@ -167,3 +168,5 @@ To compute (2):
>  	git rev-list master..topic
>  
>  	if this is empty, it is fully merged to "master".
> +
> +EOF
> -- 
> 1.7.1.rc1

```

## Jonathan Nieder, 2010-04-19 21:09

Subject: Re: [PATCH] t0001: check syntax of sample hooks
Message-ID: <20100419210950.GA30284@progeny.tock>
URL: https://gitlist.dev/e/20100419210950.GA30284%40progeny.tock
In-Reply-To: <7v633nqi6i.fsf@alter.siamese.dyndns.org>

```
Junio C Hamano wrote:

> "#!/Program  Files/bin/shell"???

“#!/usr/bin/env sh”?

I will think a little more about this and look at what msysgit does.

>> +cat <<\EOF
>
> No need to meow here; just say ":" instead.

Makes sense.

Thanks,
Jonathan

```