l...@gnu.org (Ludovic Courtès) writes: > Hi Mark, > > Mark H Weaver <m...@netris.org> skribis: > >> What do other people think? > > As you said, R5RS makes it clear that there can be several (in the sense > of eq?) empty strings, so I think what you did is the right thing.
Since it uses the same verbiage with regard to '(), could you please point out _where_ R5RS states that "freshly allocated" means "not eq?"? For me it means "does not contain any component in common with previously allocated material". The fixed constant '() or (list) (the neutral element with regard to list concatenation) not containing any allocated pairs meets that description, and the fixed constant "" or (string) (the neutral element with regard to string concatenation) not containing any allocated characters meets that description. So why treat them differently? What does it buy us except trouble? -- David Kastrup
