Am Mittwoch, 17. April 2013, 10:19:21 schrieb John Cowan: > Arne Babenhauserheide scripsit: > > > I did not know that… I had thought that lisps had macros from very > > early on. > > Oh yes. Lisp implementations of all sorts have had macros of one kind > or another, with the exception of very small implementations from earlier > days. But having macros and standardizing them are two different > things. Common Lisp standardized its low-level non-hygienic macros > in CLtL1 (1984). Scheme did not standardize its high-level hygienic > macros until R4RS (1991), and then only in a non-normative appendix; full > standardization did not come until R5RS (1998). Low-level macros with > optional hygiene-breaking were standardized by R6RS (2007); they were > excluded from the small language of R7RS, but will reappear in some form > in the large language.
Wow… so that’s actually pretty recent research. To think that I took my Emacs
Lisp macros for granted…
Thanks!
Best wishes,
Arne
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