[pro] [Q] unicode support

Hello,

does anyone have a global view on the status of unicode support in the main CL implementations (SBCL, CMU-CL, ECL, CCL, CLISP, ABCL, ACL, LispWorks). By that, I mean mostly being able to encode source files in utf8 with the following concerns:

- do I need to do something special at the implementation-level ? - do I need to do something special at the ASDF system level ? - could this break the code of people using my libraries ?

Thank you.