--backup-dir argument and --old-args

[victorshoup]

Recent versions of rsync changed the way arguments were processed, so that escaped quotes are passed through as escaped quotes, unless one specifies --old-args(or sets the corresponding environment variable). However, the --backup-dir argument does not behave consistently. Like other arguments, it gets passed through with escaped quotes; however, this happens even with --old-args.

Thus, this is a breaking change without any mechanism available to maintain backward compatibility. Was this intentional or is it a bug?

I have old scripts that need to be rewritten to take into account the versions of local and remote sync, and I'm not entirely sure all combinations of local and remote versions will even work.

Thanks.