GitLab

	* iswitchb.el (iswitchb-max-to-show): Added a new config variable
	which optionally limits the number of names shown in the
	minibuffer.  Off by default.
	(iswitchb-completions): Use `iswitchb-max-to-show'.  This speeds
	up iswitchb for users with a multitude of open buffers, by showing
	only the first and last N/2 buffers in the completion list (which
	is enough for C-s/C-r, and to know that more characters need to be
	typed to refine the completion list).