Re: [PATCH v7 4/4] git-rebase: add keep_empty flag

[Junio C Hamano <jch@google.com>]

Thomas Rast <trast@student.ethz.ch> writes:

> Either way, it should simply be spelled as
>
> is_empty_commit() {
> 	tree=$(git rev-parse "$1"^{tree})
> 	ptree=$(git rev-parse "$1"^^{tree})
> 	test "$tree" = "$ptree"
> }

Thanks; will squash in something like this:

diff --git a/git-rebase--interactive.sh b/git-rebase--interactive.sh
index 82042b1..8fe304f 100644
--- a/git-rebase--interactive.sh
+++ b/git-rebase--interactive.sh
@@ -168,9 +168,10 @@ has_action () {
 }
 
 is_empty_commit() {
-	tree=$(git rev-parse "$1"^{tree})
-	ptree=$(git rev-parse "$1"^^{tree})
-	return $(test "$tree" = "$ptree")
+	tree=$(git rev-parse "$1"^{tree} 2>/dev/null) &&
+	ptree=$(git rev-parse "$1"^^{tree} 2>/dev/null) ||
+		die "$1: not a commit that can be picked"
+	test "$tree" = "$ptree"
 }
 
 # Run command with GIT_AUTHOR_NAME, GIT_AUTHOR_EMAIL, and