Merge branch 'ph/rebase-preserve-all-merges'

An earlier change to add --keep-empty option broke "git rebase
--preserve-merges" and lost merge commits that end up being the
same as its parent.

* ph/rebase-preserve-all-merges:
rebase --preserve-merges: keep all merge commits including empty ones

diff --git a/git-rebase--interactive.sh b/git-rebase--interactive.sh
index 44901d53c43d972e03a71bfbe0b769f2e8f22d7b..8ed7fccc18507b6f3e2508bb117ce056a764de77 100644 (file)
--- a/git-rebase--interactive.sh
+++ b/git-rebase--interactive.sh
@@ -190,6 +190,11 @@ is_empty_commit() {
        test "$tree" = "$ptree"
 }
 
+is_merge_commit()
+{
+       git rev-parse --verify --quiet "$1"^2 >/dev/null 2>&1
+}
+
 # Run command with GIT_AUTHOR_NAME, GIT_AUTHOR_EMAIL, and
 # GIT_AUTHOR_DATE exported from the current environment.
 do_with_author () {
@@ -874,7 +879,7 @@ git rev-list $merges_option --pretty=oneline --abbrev-commit \
 while read -r shortsha1 rest
 do
 
-       if test -z "$keep_empty" && is_empty_commit $shortsha1
+       if test -z "$keep_empty" && is_empty_commit $shortsha1 && ! is_merge_commit $shortsha1
        then
                comment_out="# "
        else