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

Sales of this book support The Perl Foundation! Get a printed copy>>>

Reference to nonexistent or unclosed group in regex; marked by <-- HERE in m/%s/

(F) You used something like \g{-7} in your regular expression, but there are not at least seven sets of closed capturing parentheses in the expression before where the \g{-7} was located.

The <-- HERE shows in the regular expression about where the problem was discovered.

ISBN 9781906966027Perl Language Reference ManualSee the print edition