niklasb/vimium — comment on commit 9487bbe84b028f72814a057d8090ae4d12c80216
File: lib/utils.js line 90
By niklasb:

I thought it would be a nice shortcut if one wants to force URL recognition. Accessing file:// scheme URLs is not that common, I think. The // syntax is also used in HTML (but for I slightly different purpose, I admit).