"John W. Krahn" schreef:
> I seem to remember that Jeffrey Friedl's[1] book describes a way to
> emulate left and right word boundaries in Perl's regular expressions.
$ echo 'abc test def' |perl -wple'
$lwb = qr/\b(?=[[:alnum:]])/;
$rwb = qr/(?<=[[:alnum:]])\b/;
s/${lwb}test${rwb}/X/g;
'
abc X def
$ echo 'abc test def' |perl -wple'
$lwb = qr/(?<![[:alnum:]])(?=[[:alnum:]])/;
$rwb = qr/(?<=[[:alnum:]])(?![[:alnum:]])/;
s/${lwb}test${rwb}/X/g;
'
abc X def
(should both also work with "test" at start or end)
--
Affijn, Ruud
"Gewoon is een tijger."
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