recent maint on emacs 25. i know this is an imperfect bug report with no mce that you can probably repro. but perhaps it can trigger an idea that could lead directly to a fix. my brain and computer limitations cannot do better at this time.
when i run m-ret at the caret i get this bt. my intent is to make a new list item containing prefer as its header. 1) [ ] towels 1) [ ] 12 very large (asdfasdf asdfasdf) solid color, like the ones i use, thick -- asdafsdf -- ^prefer to get them slightly wider - not any ... - not any pattern (something like different color on end might be ok, dunno) or anything garish 2) [ ] 6 dark aasdfa dfnkajs dkfaskdf kasdn fkasdnkfanksdfn kasdfn 2) asdfasdfasdf Debugger entered--Lisp error: (args-out-of-range -1 3) replace-match("1) " nil nil nil 1) #[771 ... org-list-struct-apply-struct(... org-list-write-struct(... org-insert-item(nil) funcall-interactively(org-insert-item nil) call-interactively(org-insert-item) org-meta-return(nil) funcall-interactively(org-meta-return nil) call-interactively(org-meta-return nil nil) command-execute(org-meta-return)