RFC Errata
RFC 3986, "Uniform Resource Identifier (URI): Generic Syntax", January 2005
Source of RFC: IETF - NON WORKING GROUPArea Assignment: app
Errata ID: 5428
Status: Reported
Type: Technical
Publication Format(s) : TEXT
Reported By: Kevin Layer
Date Reported: 2018-07-17
Section 4.2 says:
relative-part = "//" authority path-abempty / path-absolute / path-noscheme / path-empty
It should say:
relative-part = "//" authority path-abempty / path-absolute / path-noscheme / path-abempty ; this was added / path-empty
Notes:
As written, the ABNF excludes "/" being a valid URI. It is hard to believe that href="/" when converted to a URI, would be illegal.