Edit a file that has misspelled words, but only in syntax items that are not spell-checked, then type ]s. Vim will go into an infinite loop that can be stopped with ^C. Here is what I did:
$ vim -u NONE -U NONE ~/.vim/plugin/countspell.vim :set spell :syn on ]s I first noticed this in 7.0f last night, but it still happens in 7.0g. ...Marvin