On Jan 12, 2009, at 9:30 AM, Michal Suchanek wrote: >> >> Is there a way to tell at runtime which underline readline library >> I'm >> using? >> >> > You can check with otool with which library the extension links. And, indeed, it seems to use libedit. I forced it to use readline, and things now work. I wonder if maybe extconf should report something like "I'm using libedit, rather than readline, which means you won't be able to enter utf-8 characters" Dave