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Perl Language Reference Manual
by Larry Wall and others
Paperback (6"x9"), 724 pages
ISBN 9781906966027
RRP £29.95 ($39.95)

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UTF-16 surrogate %s

(W utf8) You tried to generate half of a UTF-16 surrogate by requesting a Unicode character between the code points 0xD800 and 0xDFFF (inclusive). That range is reserved exclusively for the use of UTF-16 encoding (by having two 16-bit UCS-2 characters); but Perl encodes its characters in UTF-8, so what you got is a very illegal character. If you really really know what you are doing you can turn off this warning by no warnings 'utf8';.

ISBN 9781906966027Perl Language Reference ManualSee the print edition