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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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Deprecated character(s) in \\N{...} starting at '%s'

(D deprecated) Just about anything is legal for the ... in \N{...}. But starting in 5.12, non-reasonable ones that don't look like names are deprecated. A reasonable name begins with an alphabetic character and continues with any combination of alphanumerics, dashes, spaces, parentheses or colons.

ISBN 9781906966027Perl Language Reference ManualSee the print edition