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readtable and # "syntax"
- To: common-lisp@su-ai
- Subject: readtable and # "syntax"
- From: Steven Haflich <smh@mit-ems.ARPA>
- Date: Sun, 23 Feb 86 02:19:09 est
There are other ways in which reader # syntax is underspecified in
(setq r (copy-readtable))
(set-syntax-from-char #\( #\) r)
(set-syntax-from-char #\) #\( r)
In readtable r the parens should now have exchanged their normal
functions. When readtable r is in effect, which of the following is
correct reader syntax?
)defstruct foo a b( ;Ugh!
#S(foo 1 2)
)defstruct foo a b(
#S)foo 1 2(
The issue is not clear from CLtL, which avoids calling the text after #S
a "list" and just generally refers to "this syntax".