minimize duplicate chrome tabs of same page

simple_tab_alfred_workflow

local my_url, my_search
global search_terms
set my_url to "http://www.github.com"
set search_terms to {"github.com"}

tell application "Google Chrome"
	if it is not running then
		open location my_url
	else
		set result to my find_tab()
		if (get status of result) then
			set active tab index of (get _window of result) to (get tab_idx of result)
		else
			open location my_url
		end if
		
	end if
	activate
end tell


on find_tab()
	tell application "Google Chrome"
		set my_search to "github.com"
		set val to false
		set window_list to every window
		repeat with _window in window_list
			set tab_list to every tab in _window
			set tab_idx to 0
			repeat with _tab in tab_list
				set tab_idx to tab_idx + 1
				set url_string to (URL of _tab as string)
				repeat with search_term in search_terms
					if search_term is in url_string then
						return {status:true, _window:_window, tab_idx:tab_idx}
					end if
				end repeat
			end repeat
		end repeat
		return {status:false}
	end tell
end find_tab