emacs-prog-modes-0.2-alt4 I've discovered this when calling emerge on spec files (from git mergetool). For some reason, it starts rpm-spec-mode in an empty buffer with the spec file, and rpm-spec-mode does some unwanted insertions by calling rpm-spec-initialize: (if (= (buffer-size) 0) (rpm-spec-initialize)) It would be more convenient, if rpm-spec-initialize would be called with a user's command only. Quick workaround: get rid of automatic rpm-spec-mode.
M-x package-install <RET> rpm-spec-mode <RET>