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((length 0 pos str) str)
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((length 0 pos str) str)
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> (setf b (pack "b" (+ 0xc0 0x30)))
"�"
> (regex "x" (b -1))
ERR: invalid UTF8 string in function regex
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(regex "(\r|\n)$" a 0)
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(apply date-value (list (int "2015") 1 1))
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(format "%.30f" 20000.9)