-BP> Is this something we need to worry about for XEmacs? Yes. However, Eli's subject should read "ICCCM-violating Extended Segments that are used anyway by XFree86". The ICCCM (as revised by the XFree86 Project!!) specifically disallows this use of those control sequences. (They do absolutely nothing that can't be done with X Compound Text, which _is_ backward compatible to properly coded applications, except ensure that backward compatibility is impossible.) Can we worry, and then Just Say No? Please? Pretty please? Pthath. See also the thread "Invalid characters while copy-pasting" rooted at <87u1suiz08.fsf(a)samuel.pampltd.com&gt; on comp.emacs. -- Institute of Policy and Planning Sciences http://turnbull.sk.tsukuba.ac.jp University of Tsukuba Tennodai 1-1-1 Tsukuba 305-8573 JAPAN Don't ask how you can "do" free software business; ask what your business can "do for" free software.