Dmitry Alexandrov <d...@gnui.org> writes: > but explicitly documented in (info "(elisp) Dotted Pair Notation") as well: > > #+begin_quote > As a somewhat peculiar side effect of ‘(a b . c)’ and ‘(a . (b . c))’ > being equivalent, for consistency this means that if you replace ‘b’ > here with the empty sequence, then it follows that ‘(a . c)’ and ‘(a . ( > . c))’ are equivalent, too. This also means that ‘( . c)’ is equivalent > to ‘c’, but this is seldom used. > #+end_quote
Also this is what SRFI-119 / wisp generalizes to enable continuing the argument list in indentation-based Scheme without introducing additional syntax. In wisp, not only is =(equal? '(. wtf) 'wtf)=, but also equal? ' a b c ' : . a b c (a structure which is a syntax error in regular Scheme, so no ambiguity is introduced: =(equal? '(a b c) '((. a b c)))= ⇒ missing close paren: b) Best wishes, Arne -- Unpolitisch sein heißt politisch sein, ohne es zu merken. draketo.de
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