221 lines
7.8 KiB
Scheme
Executable File
221 lines
7.8 KiB
Scheme
Executable File
#!/usr/bin/env ikarus --r6rs-script
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;;; this file is a mess.
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(import
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(ikarus)
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(unicode-data))
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(define (hex-string->number str)
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(or (string->number (string-append "#x" str))
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(error 'hex-string->number "invalid ~s" str)))
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(define (find-char c s)
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(let f ([i 0] [n (string-length s)])
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(cond
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[(= i n) #f]
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[(char=? (string-ref s i) c) i]
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[else (f (add1 i) n)])))
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(define (extract-range str)
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(cond
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[(find-char #\. str)
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=>
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(lambda (i)
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(cons (hex-string->number (substring str 0 i))
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(hex-string->number (substring str (+ i 2) (string-length str)))))]
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[else
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(let ([n (hex-string->number str)])
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(cons n n))]))
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(define constituent-property #x010000)
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(define uppercase-property #x020000)
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(define lowercase-property #x040000)
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(define titlecase-property #x080000)
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(define alphabetic-property #x100000)
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(define numeric-property #x200000)
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(define whitespace-property #x400000)
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;;; Uppercase = Lu + Other_Uppercase
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;;; Lowercase = Ll + Other_Lowercase
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;;; Titlecase = Lt
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;;; Alphabetic = Lu + Ll + Lt + Lm + Lo + Nl + Other_Alphabetic
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;;; Numeric = ???
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;;; White_Space =
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(define proplist-properties
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`(["Other_Uppercase" ,uppercase-property]
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["Other_Lowercase" ,lowercase-property]
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["Other_Alphabetic" ,alphabetic-property]
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["White_Space" ,whitespace-property]))
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(define categories
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;;; 30 categories
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`([Lu ,(+ 00 constituent-property uppercase-property alphabetic-property) "Letter, Uppercase"]
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[Ll ,(+ 01 constituent-property lowercase-property alphabetic-property) "Letter, Lowercase"]
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[Lt ,(+ 02 constituent-property titlecase-property alphabetic-property) "Letter, Titlecase"]
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[Lm ,(+ 03 constituent-property alphabetic-property) "Letter, Modifier"]
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[Lo ,(+ 04 constituent-property alphabetic-property) "Letter, Other"]
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[Mn ,(+ 05 constituent-property) "Mark, Nonspacing"]
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[Mc ,(+ 06 constituent-property) "Mark, Spacing Combining"]
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[Me ,(+ 07 constituent-property) "Mark, Enclosing"]
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[Nd ,(+ 08 constituent-property) "Number, Decimal Digit"]
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[Nl ,(+ 09 constituent-property alphabetic-property) "Number, Letter"]
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[No ,(+ 10 constituent-property) "Number, Other"]
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[Pc ,(+ 11 constituent-property) "Punctuation, Connector"]
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[Pd ,(+ 12 constituent-property) "Punctuation, Dash"]
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[Ps ,(+ 13 ) "Punctuation, Open"]
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[Pe ,(+ 14 ) "Punctuation, Close"]
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[Pi ,(+ 15 ) "Punctuation, Initial quote"]
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[Pf ,(+ 16 ) "Punctuation, Final quote"]
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[Po ,(+ 17 constituent-property) "Punctuation, Other"]
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[Sm ,(+ 18 constituent-property) "Symbol, Math"]
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[Sc ,(+ 19 constituent-property) "Symbol, Currency"]
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[Sk ,(+ 20 constituent-property) "Symbol, Modifier"]
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[So ,(+ 21 constituent-property) "Symbol, Other"]
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[Zs ,(+ 22 ) "Separator, Space"]
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[Zl ,(+ 23 ) "Separator, Line"]
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[Zp ,(+ 24 ) "Separator, Paragraph"]
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[Cc ,(+ 25 ) "Other, Control"]
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[Cf ,(+ 26 ) "Other, Format"]
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[Cs ,(+ 27 ) "Other, Surrogate"]
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[Co ,(+ 28 constituent-property) "Other, Private Use"]
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[Cn ,(+ 29 ) "Other, Not Assigned"]
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))
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(define (category-index x)
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(cond
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[(assq x categories) => cadr]
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[else (error 'category-index "invalid cat ~s" x)]))
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(define (make-cats-table ls)
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(let f ([i 1] [st (car ls)] [ls (cdr ls)] [ac '()])
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(cond
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[(null? ls) (reverse (cons (cons i st) ac))]
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[(equal? (cdar ls) (cdr st)) (f (add1 i) st (cdr ls) ac)]
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[else
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(f 1 (car ls) (cdr ls) (cons (cons i st) ac))])))
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(define (merge-sequences ls)
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(define (split ls)
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(cond
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[(null? ls) (values '() '())]
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[(= (caar ls) 1)
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(let-values ([(chain no-chain) (split (cdr ls))])
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(values (cons (cdar ls) chain) no-chain))]
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[else
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(values '() ls)]))
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(define (mk-chain a chain)
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(cond
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[(null? chain) a]
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[else
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(cons (car a)
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(list->vector
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(cons (cdr a)
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(map cdr chain))))]))
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(cond
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[(null? ls) '()]
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[(= (caar ls) 1)
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(let-values ([(chain no-chain) (split (cdr ls))])
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(cons (mk-chain (cdar ls) chain)
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(merge-sequences no-chain)))]
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[else (cons (cdar ls) (merge-sequences (cdr ls)))]))
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(define (iota i n)
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(let f ([i i] [n n] [ac '()])
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(cond
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[(= i n) ac]
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[else (f i (sub1 n) (cons (sub1 n) ac))])))
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;;; first, make a big vector for all characters
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;;; place all in category Cn, unless proven otherwise
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(let ([v (make-vector (+ #x10FFFF 1) (category-index 'Cn))])
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(let ([ls (get-unicode-data "UNIDATA/UnicodeData.txt")])
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;;; interesting parts of each element in ls are:
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;;; field0: the character index, numeric
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;;; field2: the category, symbolic
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;;; field8: if set, then the char has the numeric property
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(define (setprop idx prop)
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(vector-set! v idx prop))
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(let ([ls (map
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(lambda (x)
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(let ([idx (hex-string->number (list-ref x 0))]
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[cat (category-index (string->symbol (list-ref x 2)))]
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[num? (list-ref x 8)])
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(cons idx
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(if (string=? num? "")
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cat
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(fxlogor cat numeric-property)))))
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ls)])
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(let f ([ls ls])
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(cond
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[(null? ls) (void)]
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[(null? (cdr ls)) (setprop (caar ls) (cdar ls))]
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[(or (= (+ 1 (caar ls)) (caadr ls))
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(not (= (cdar ls) (cdadr ls))))
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(setprop (caar ls) (cdar ls))
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(f (cdr ls))]
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[else
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(let f ([i (caar ls)] [j (caadr ls)] [p (cdar ls)])
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(unless (> i j)
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(setprop i p)
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(f (add1 i) j p)))
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(f (cddr ls))]))))
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;;; every element of v now maps to the category-index.
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(let ([ls (get-unicode-data "UNIDATA/PropList.txt")])
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;;; field0 is a range
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;;; field1 is a property name
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(for-each
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(lambda (x)
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(let ([range (extract-range (car x))]
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[name (cadr x)])
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(cond
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[(assoc name proplist-properties) =>
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(lambda (a)
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(let ([n (cadr a)])
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(let f ([i (car range)] [j (cdr range)])
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(unless (> i j)
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(vector-set! v i (fxlogor (vector-ref v i) n))
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(f (add1 i) j)))))])))
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ls))
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(let ([table
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(merge-sequences
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(make-cats-table
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(map cons
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(iota 0 (vector-length v))
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(vector->list v))))])
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(with-output-to-file "unicode-charinfo.ss"
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(lambda ()
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(printf ";;; DO NOT EDIT\n")
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(printf ";;; automatically generated\n")
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(printf ";;; ~s elements in vectors\n\n" (length table))
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(pretty-print
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`(begin
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(define constituent-property ,constituent-property )
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(define uppercase-property ,uppercase-property )
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(define lowercase-property ,lowercase-property )
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(define titlecase-property ,titlecase-property )
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(define alphabetic-property ,alphabetic-property )
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(define numeric-property ,numeric-property )
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(define whitespace-property ,whitespace-property)))
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(pretty-print
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`(define unicode-categories-lookup-vector
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',(list->vector (map car table))))
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(pretty-print
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`(define unicode-categories-values-vector
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',(list->vector (map cdr table))))
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(pretty-print
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`(define unicode-categories-name-vector
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',(list->vector (map car categories)))))
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'replace)))
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(printf "Happy Happy Joy Joy\n")
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