Issue originally reported by IvanDobsky on community forum.

When pasting the schemeless link preceded with a leading space, an error is triggered as it isn’t a valid URL indeed. It would be nice to turn it into a valid HTTP link instead.

Example:

 bryancorbett.co.uk
^ white space leading a schemeless link

http://bryancorbette.co.uk
^ valid HTTP link

This is already handled the same for schemeless link (without a leading space) and valid link preceded with leading space. Examples:

bryancorbett.co.uk
^ schemeless link

 http://bryancorbette.co.uk
^ white space leading a valid HTTP link