travis-ci: switch to Xcode 10.1 macOS image

diff --git a/git-legacy-rebase.sh b/git-legacy-rebase.sh
index 75a08b2683e76e6832475bc91e4d4f38b3d3bc3c..b4c7dbfa575d3b5c664677c22b8613284d2e33fb 100755 (executable)
--- a/git-legacy-rebase.sh
+++ b/git-legacy-rebase.sh
@@ -337,6 +337,11 @@ do
                fix|strip)
                        force_rebase=t
                        ;;
+               warn|nowarn|error|error-all)
+                       ;; # okay, known whitespace option
+               *)
+                       die "fatal: Invalid whitespace option: '${1#*=}'"
+                       ;;
                esac
                ;;
        --ignore-whitespace)
@@ -352,6 +357,9 @@ do
                git_am_opt="$git_am_opt $1"
                force_rebase=t
                ;;
+       -C*[!0-9]*)
+               die "fatal: switch \`C' expects a numerical value"
+               ;;
        -C*)
                git_am_opt="$git_am_opt $1"
                ;;
@@ -710,10 +718,16 @@ if test -n "$diffstat"
 then
        if test -n "$verbose"
        then
-               echo "$(eval_gettext "Changes from \$mb to \$onto:")"
+               if test -z "$mb"
+               then
+                       echo "$(eval_gettext "Changes to \$onto:")"
+               else
+                       echo "$(eval_gettext "Changes from \$mb to \$onto:")"
+               fi
        fi
+       mb_tree="${mb:-$(git hash-object -t tree /dev/null)}"
        # We want color (if set), but no pager
-       GIT_PAGER='' git diff --stat --summary "$mb" "$onto"
+       GIT_PAGER='' git diff --stat --summary "$mb_tree" "$onto"
 fi
 
 test -n "$interactive_rebase" && run_specific_rebase