I want Ctrl-C to exit the editor (with the question "Lose changes...") even when there is a marked section. I put into my .joerc
nmark,abort ^C
It has the desired effect. HOWEVER, for some reason it breaks the use of Ctrl-C in other places, in particular in the prompt "Lose changes...". Normally when that prompt comes you can answer N or press Ctrl-C to not abort. With ^C set to "nmark,abort" Ctrl-C no longer does anything at that prompt.