twitter/bootstrap — pull request #4237 by captbrogers (2012-07-31 14:37:04+00:00)
Title: Changed CSS rules for outlines in active/focus states

I have modified mixins.less to have the tab-focus() function remove dotted borders, not set them as a default style. Then I modified reset.less to apply that function with active, focus, hover, and -moz-inner-focus pseudo classes on anchor, button, and input[type="button"] elements.