Merge branch 'da/subtree-2.9-regression'

"git merge" in Git v2.9 was taught to forbid merging an unrelated
lines of history by default, but that is exactly the kind of thing
the "--rejoin" mode of "git subtree" (in contrib/) wants to do.
"git subtree" has been taught to use the "--allow-unrelated-histories"
option to override the default.

* da/subtree-2.9-regression:
subtree: fix "git subtree split --rejoin"
t7900-subtree.sh: fix quoting and broken && chains

diff --git a/contrib/subtree/git-subtree.sh b/contrib/subtree/git-subtree.sh
index 7a39b30ad09483ef9796d98ca78e52f652046582..b567eaeff97bca0b42c7217a99cd73ea4b191f07 100755 (executable)
--- a/contrib/subtree/git-subtree.sh
+++ b/contrib/subtree/git-subtree.sh
@@ -662,6 +662,7 @@ cmd_split()
                debug "Merging split branch into HEAD..."
                latest_old=$(cache_get latest_old)
                git merge -s ours \
+                       --allow-unrelated-histories \
                        -m "$(rejoin_msg "$dir" $latest_old $latest_new)" \
                        $latest_new >&2 || exit $?
        fi

diff --git a/contrib/subtree/t/t7900-subtree.sh b/contrib/subtree/t/t7900-subtree.sh
index 3bf96a9bb6b29757736d8f4250fae25664e298f0..9751cfe9e63d6510dd7af0b6be5f7028df49bf88 100755 (executable)
--- a/contrib/subtree/t/t7900-subtree.sh
+++ b/contrib/subtree/t/t7900-subtree.sh
@@ -16,16 +16,16 @@ export TEST_DIRECTORY
 
 subtree_test_create_repo()
 {
-       test_create_repo "$1"
+       test_create_repo "$1" &&
        (
-               cd $1
+               cd "$1" &&
                git config log.date relative
        )
 }
 
 create()
 {
-       echo "$1" >"$1"
+       echo "$1" >"$1" &&
        git add "$1"
 }
 
@@ -71,12 +71,12 @@ join_commits()
 }
 
 test_create_commit() (
-       repo=$1
-       commit=$2
-       cd "$repo"
-       mkdir -p $(dirname "$commit") \
+       repo=$1 &&
+       commit=$2 &&
+       cd "$repo" &&
+       mkdir -p "$(dirname "$commit")" \
        || error "Could not create directory for commit"
-       echo "$commit" >"$commit"
+       echo "$commit" >"$commit" &&
        git add "$commit" || error "Could not add commit"
        git commit -m "$commit" || error "Could not commit"
 )
@@ -346,6 +346,22 @@ test_expect_success 'split sub dir/ with --rejoin' '
        )
  '
 
+next_test
+test_expect_success 'split sub dir/ with --rejoin from scratch' '
+       subtree_test_create_repo "$subtree_test_count" &&
+       test_create_commit "$subtree_test_count" main1 &&
+       (
+               cd "$subtree_test_count" &&
+               mkdir "sub dir" &&
+               echo file >"sub dir"/file &&
+               git add "sub dir/file" &&
+               git commit -m"sub dir file" &&
+               split_hash=$(git subtree split --prefix="sub dir" --rejoin) &&
+               git subtree split --prefix="sub dir" --rejoin &&
+               check_equal "$(last_commit_message)" "Split '\''sub dir/'\'' into commit '\''$split_hash'\''"
+       )
+ '
+
 next_test
 test_expect_success 'split sub dir/ with --rejoin and --message' '
        subtree_test_create_repo "$subtree_test_count" &&