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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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POSIX class [:%s:] unknown in regex; marked by <-- HERE in m/%s/

(F) The class in the character class [: :] syntax is unknown. The <-- HERE shows in the regular expression about where the problem was discovered. Note that the POSIX character classes do not have the is prefix the corresponding C interfaces have: in other words, it's [[:print:]], not isprint. See 11.

ISBN 9781906966027Perl Language Reference ManualSee the print edition