I'm using the goo.gl link shortener API in my app to send urls to twitter along with a link. I've been allowing users to submit 119 characters, appending a space, and then the URL because I was under the impression that they were always 19 characters. This should leave me with one to spare.
Unfortunately I've been getting some "tweet is too long" errors and I can't seem to find any documentation about the possible range of goo.gl url lengths. Does anyone know what the max is or know where some reliable documentation on it is?