R Core quickly pinpointed readline 5.1 as the likely suspect; libreadline5 already has an open bug against it where the same thing happens with gdb.
I had a typo in the CC field when sending the "forwared to"; I'll fix that this evening. Thanks, Dirk -- Hell, there are no rules here - we're trying to accomplish something. -- Thomas A. Edison -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]