Merge pull request git-for-windows#1992 from orgads/rebase-post-check…

…out-hook

Rebase: Run post-checkout hook on checkout

builtin/rebase.c

@@ -369,6 +369,7 @@ static void add_var(struct strbuf *buf, const char *name, const char *value)
 #define RESET_HEAD_DETACH (1<<0)
 #define RESET_HEAD_HARD (1<<1)
 #define RESET_HEAD_REFS_ONLY (1<<2)
+#define RESET_HEAD_RUN_HOOK (1<<3)
 
 static int reset_head(struct object_id *oid, const char *action,
 		      const char *switch_to_branch, unsigned flags,
@@ -377,6 +378,7 @@ static int reset_head(struct object_id *oid, const char *action,
 	unsigned detach_head = flags & RESET_HEAD_DETACH;
 	unsigned reset_hard = flags & RESET_HEAD_HARD;
 	unsigned refs_only = flags & RESET_HEAD_REFS_ONLY;
+	unsigned run_hook = flags & RESET_HEAD_RUN_HOOK;
 	struct object_id head_oid;
 	struct tree_desc desc[2] = { { NULL }, { NULL } };
 	struct lock_file lock = LOCK_INIT;
@@ -481,6 +483,10 @@ static int reset_head(struct object_id *oid, const char *action,
 			ret = create_symref("HEAD", switch_to_branch,
 					    reflog_head);
 	}
+	if (run_hook)
+		run_hook_le(NULL, "post-checkout",
+			    oid_to_hex(orig ? orig : &null_oid),
+			    oid_to_hex(oid), "1", NULL);
 
 leave_reset_head:
 	strbuf_release(&msg);
@@ -1729,7 +1735,7 @@ int cmd_rebase(int argc, const char **argv, const char *prefix)
 	strbuf_addf(&msg, "%s: checkout %s",
 		    getenv(GIT_REFLOG_ACTION_ENVIRONMENT), options.onto_name);
 	if (reset_head(&options.onto->object.oid, "checkout", NULL,
-		       RESET_HEAD_DETACH, NULL, msg.buf))
+		       RESET_HEAD_DETACH | RESET_HEAD_RUN_HOOK, NULL, msg.buf))
 		die(_("Could not detach HEAD"));
 	strbuf_release(&msg);
 

t/t5403-post-checkout-hook.sh

@@ -7,70 +7,69 @@ test_description='Test the post-checkout hook.'
 . ./test-lib.sh
 
 test_expect_success setup '
-	echo Data for commit0. >a &&
-	echo Data for commit0. >b &&
-	git update-index --add a &&
-	git update-index --add b &&
-	tree0=$(git write-tree) &&
-	commit0=$(echo setup | git commit-tree $tree0) &&
-	git update-ref refs/heads/master $commit0 &&
-	git clone ./. clone1 &&
-	git clone ./. clone2 &&
-	GIT_DIR=clone2/.git git branch new2 &&
-	echo Data for commit1. >clone2/b &&
-	GIT_DIR=clone2/.git git add clone2/b &&
-	GIT_DIR=clone2/.git git commit -m new2
+	test_commit one &&
+	test_commit two &&
+	test_commit rebase-on-me &&
+	git reset --hard HEAD^ &&
+	test_commit three three &&
+	mv .git/hooks-disabled .git/hooks
 '
 
-for clone in 1 2; do
-    cat >clone${clone}/.git/hooks/post-checkout <<'EOF'
+cat >.git/hooks/post-checkout <<'EOF'
 #!/bin/sh
-echo $@ > $GIT_DIR/post-checkout.args
+echo $@ > .git/post-checkout.args
 EOF
-    chmod u+x clone${clone}/.git/hooks/post-checkout
-done
+chmod u+x .git/hooks/post-checkout
 
 test_expect_success 'post-checkout runs as expected ' '
-	GIT_DIR=clone1/.git git checkout master &&
-	test -e clone1/.git/post-checkout.args
+	git checkout master &&
+	test -e .git/post-checkout.args
 '
 
 test_expect_success 'post-checkout receives the right arguments with HEAD unchanged ' '
-	old=$(awk "{print \$1}" clone1/.git/post-checkout.args) &&
-	new=$(awk "{print \$2}" clone1/.git/post-checkout.args) &&
-	flag=$(awk "{print \$3}" clone1/.git/post-checkout.args) &&
+	read old new flag < .git/post-checkout.args &&
 	test $old = $new && test $flag = 1
 '
 
 test_expect_success 'post-checkout runs as expected ' '
-	GIT_DIR=clone1/.git git checkout master &&
-	test -e clone1/.git/post-checkout.args
+	git checkout master &&
+	test -e .git/post-checkout.args
 '
 
 test_expect_success 'post-checkout args are correct with git checkout -b ' '
-	GIT_DIR=clone1/.git git checkout -b new1 &&
-	old=$(awk "{print \$1}" clone1/.git/post-checkout.args) &&
-	new=$(awk "{print \$2}" clone1/.git/post-checkout.args) &&
-	flag=$(awk "{print \$3}" clone1/.git/post-checkout.args) &&
+	git checkout -b new1 &&
+	read old new flag < .git/post-checkout.args &&
 	test $old = $new && test $flag = 1
 '
 
 test_expect_success 'post-checkout receives the right args with HEAD changed ' '
-	GIT_DIR=clone2/.git git checkout new2 &&
-	old=$(awk "{print \$1}" clone2/.git/post-checkout.args) &&
-	new=$(awk "{print \$2}" clone2/.git/post-checkout.args) &&
-	flag=$(awk "{print \$3}" clone2/.git/post-checkout.args) &&
+	git checkout two &&
+	read old new flag < .git/post-checkout.args &&
 	test $old != $new && test $flag = 1
 '
 
 test_expect_success 'post-checkout receives the right args when not switching branches ' '
-	GIT_DIR=clone2/.git git checkout master b &&
-	old=$(awk "{print \$1}" clone2/.git/post-checkout.args) &&
-	new=$(awk "{print \$2}" clone2/.git/post-checkout.args) &&
-	flag=$(awk "{print \$3}" clone2/.git/post-checkout.args) &&
+	git checkout master -- three &&
+	read old new flag < .git/post-checkout.args &&
 	test $old = $new && test $flag = 0
 '
 
+test_expect_success 'post-checkout is triggered on rebase' '
+	git checkout -b rebase-test master &&
+	rm -f .git/post-checkout.args &&
+	git rebase rebase-on-me &&
+	read old new flag < .git/post-checkout.args &&
+	test $old != $new && test $flag = 1
+'
+
+test_expect_success 'post-checkout is triggered on rebase with fast-forward' '
+	git checkout -b ff-rebase-test rebase-on-me^ &&
+	rm -f .git/post-checkout.args &&
+	git rebase rebase-on-me &&
+	read old new flag < .git/post-checkout.args &&
+	test $old != $new && test $flag = 1
+'
+
 if test "$(git config --bool core.filemode)" = true; then
 mkdir -p templates/hooks
 cat >templates/hooks/post-checkout <<'EOF'