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Description
The remapping design doc states that /namespace/ is only prefixed to the match side of a rule if it does not begin with *, **, or /. This means the rules *:=foo and /*:=foo are the same.
If code uses a relative name bar and is put into namespace /ns then the rule bar:=foo will match while *:=foo does not. However, if code uses a fully qualified name /bar then both /bar:=foo and /*:=foo match. I think this difference in behavior when there is a leading / could be confusing.
Proposal
Change the behavior to say /namespace/ is prefixed to the match side when a rule begins with *, **, or a token.