midx: clear midx on repack

diff --git a/git-rebase--interactive.sh b/git-rebase--interactive.sh
index 2f4941d0fc95270f0b723eaed8f69d506ee69a27..06a7b793075d7701b5dafa69b3576d13ba7c9de6 100644 (file)
--- a/git-rebase--interactive.sh
+++ b/git-rebase--interactive.sh
@@ -81,6 +81,8 @@ rewritten_pending="$state_dir"/rewritten-pending
 # and leaves CR at the end instead.
 cr=$(printf "\015")
 
+empty_tree=$(git hash-object -t tree /dev/null)
+
 strategy_args=${strategy:+--strategy=$strategy}
 test -n "$strategy_opts" &&
 eval '
@@ -160,7 +162,7 @@ r, reword <commit> = use commit, but edit the commit message
 e, edit <commit> = use commit, but stop for amending
 s, squash <commit> = use commit, but meld into previous commit
 f, fixup <commit> = like \"squash\", but discard this commit's log message
-x, exec <commit> = run command (the rest of the line) using shell
+x, exec <command> = run command (the rest of the line) using shell
 d, drop <commit> = remove commit
 l, label <label> = label current HEAD with a name
 t, reset <label> = reset HEAD to a label
@@ -244,7 +246,7 @@ is_empty_commit() {
                die "$(eval_gettext "\$sha1: not a commit that can be picked")"
        }
        ptree=$(git rev-parse -q --verify "$1"^^{tree} 2>/dev/null) ||
-               ptree=4b825dc642cb6eb9a060e54bf8d69288fbee4904
+               ptree=$empty_tree
        test "$tree" = "$ptree"
 }