# File lib/rack/utils.rb, line 201 def delete_cookie_header!(header, key, value = {}) unless Array === header["Set-Cookie"] header["Set-Cookie"] = [header["Set-Cookie"]].compact end header["Set-Cookie"].reject! { |cookie| cookie =~ /\A#{escape(key)}=/ } set_cookie_header!(header, key, {:value => '', :path => nil, :domain => nil, :expires => Time.at(0) }.merge(value)) nil end