|Perl Language Reference Manual|
by Larry Wall and others
Paperback (6"x9"), 724 pages
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12.3.4 Octal escapes
Octal escapes consist of a backslash followed by two or three octal digits
matching the code point of the character you want to use. This allows for
512 characters (
\00 up to
\777) that can be expressed this way (but
\377 is deprecated).
Enough in pre-Unicode days, but most Unicode characters cannot be escaped
Note that a character that is expressed as an octal escape is considered as a character without special meaning by the regex engine, and will match "as is".
|ISBN 9781906966027||Perl Language Reference Manual||See the print edition|