GitLab

	* ediff-diff.el (ediff-diff-options): clarify docstring.
	(ediff-setup-diff-regions): disallow -u in ediff-diff-options.

	* viper-cmd.el (viper-post-command-sentinel): protect against errors in
	hooks.
	(viper-add-newline-at-eob-if-necessary): add newline only if we
	actually modify buffer; ignore errors if occur.