Hi Peter! I have a patch for ltk that supposed to do the following: - remove use of a deprecated function for sbcl: "sb-debug:backtrace" https://github.com/herth/ltk/blob/master/ltk/ltk.lisp#L5088 with "sb-debug:print-backtrace" - prevent ltk to "leak" error messages from other applications (I have had problems with font-config, for example) into the communication pipe with user application, this pollute the messages sent on the pipe and makes the application crash. I have just added ":error nil" to this line https://github.com/herth/ltk/blob/master/ltk/ltk.lisp#L464 i feel this solution is sub-optimal as is not portable, probably UIOP could help here. - clean a bit the code (mostly comes from Emacs for free ;-) ) Please can you tel me how can I send the patch to be reviewed? Is here a good place or should I set up a pull request on github? Bye! C.