A new Curl logo
For something that claims to "grok" URLs, using "://" as part of the logo seems to be misunderstanding how URLs (are supposed to) work.According to RFC3986, URIs (the proper name; URLs are a kind of URI) are correctly of the form:    :

For some schemes, the  may contain a , the format for which is:    //[/] | 

So it's only hierarchical URIs with a defined authority that have the (admittedly iconic) "://" in them.I know most people identity URIs as having that sequence in them, but these are all valid URIs:    mailto:bob@example.com
    sip:bob@example.com
    tel:+18005550123
    file:/path/to/file

I'm not saying I expect everyone to understand these subtleties, but people who claim to grok URLs ought to.