Add a wrapper script as git pre-commit hook

When developer mode is enabled, the wrapper script
"script/git-hooks/pre-commit-hook" gets installed as

  .git/hooks/pre-commit

and calls "script/git-hooks/pre-commit-script".

This way we can later modify the "script/git-hooks/pre-commit-script"
without the need to ever change the installed commit hook itself.

Signed-off-by: Ralph Boehme <slow at samba.org>
Reviewed-by: Martin Schwenke <martin at meltin.net>
Reviewed-by: Jeremy Allison <jra at samba.org>

2 files changed, 34 insertions, 0 deletions

diff --git a/script/git-hooks/pre-commit-hook b/script/git-hooks/pre-commit-hook
new file mode 100755
index 00000000000..3f51254c2cf
--- /dev/null
+++ b/script/git-hooks/pre-commit-hook
@@ -0,0 +1,17 @@
+#!/bin/sh
+
+set -eu
+
+gitdir=$(git rev-parse --show-toplevel)
+if [ $? -ne 0 ] ; then
+    echo "git rev-parse --show-toplevel failed"
+    exit 1
+fi
+
+if [ ! -f ${gitdir}/script/git-hooks/pre-commit-script ] ; then
+    exit 0
+fi
+
+${gitdir}/script/git-hooks/pre-commit-script || exit $?
+
+exit 0
diff --git a/script/git-hooks/pre-commit-script b/script/git-hooks/pre-commit-script
new file mode 100755
index 00000000000..22ebecec970
--- /dev/null
+++ b/script/git-hooks/pre-commit-script
@@ -0,0 +1,17 @@
+#!/bin/sh
+
+set -eu
+
+#
+# make emacs/magit work, cf
+# https://github.com/magit/magit/issues/3419
+#
+unset GIT_LITERAL_PATHSPECS
+
+gitdir=$(git rev-parse --show-toplevel)
+if [ $? -ne 0 ] ; then
+    echo "git rev-parse --show-toplevel failed"
+    exit 1
+fi
+
+exit 0