+test_expect_success "deleting current branch adds message to HEAD's log" '
+ git update-ref $m $A &&
+ git symbolic-ref HEAD $m &&
+ git update-ref -m delete-$m -d $m &&
+ ! test -f .git/$m &&
+ grep "delete-$m$" .git/logs/HEAD
+'
+rm -f .git/$m
+
+test_expect_success "deleting by HEAD adds message to HEAD's log" '
+ git update-ref $m $A &&
+ git symbolic-ref HEAD $m &&
+ git update-ref -m delete-by-head -d HEAD &&
+ ! test -f .git/$m &&
+ grep "delete-by-head$" .git/logs/HEAD
+'
+rm -f .git/$m
+