Insert current page url as text into code – how?

I need to insert the current page’s url as plain text in a snippet of code, that I am creating with the shortcoder plugin. Since the plugin cannot reference itself, I cannot use shortcoder to insert the url, but I must find another way.
I had it working once, it was like code code code href=[url] code code code, where [url] automatically inserted the current url of the page you were visiting, including the http://-part.
But it does not work anymore, and neither do I remember, where that [url]-code was coming from nor could I find a plugin, that could replace that code.
Since it was working once: does anyone know, where that snippet [url] was coming from (surely not from shortcoder) and how I configured that? Or please give me another way of entering the current page’s url as plain text into my shortcoder’s code.