Comment 1 for bug 272444

Some commands (add,rm,log,...) support it, while others (branch) don't.

A simple testcase to make „branch“ fail is:
  mkdir br1; cd br1; bzr init .; touch més; ln -s més prova; bzr add prova; bzr commit -m "link to utf-8 file name"; cd ..; bzr branch br1 br2