[PATCH] t0001: check syntax of sample hooks

[Jonathan Nieder <jrnieder@gmail.com>]

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