Comment by jkaplowitz

The curl author writes in the linked article that Google has a right to do this both morally and legally. He should check with a trademark lawyer immediately since they don't have a right to pick such a confusing name and the curl trademark is probably strong enough to be enforceable even in unregistered form. (I'm not a lawyer and this is not legal advice, but I have been involved in administering and enforcing other open source trademarks.)