s/\bold\b/new/gi;, just like Skeeve said. :)

It might help you to remember that the boundary matcher is a so-called "zero-width assertion", which only appears on the left-hand side of a substitution. The newline (\n) and other special sequences that involve formatting and printing can be on both sides. That's because Perl treats the regular expressions like double-quoted strings. You can get more info on this by doing perldoc perlre at the shell/command prompt.

HTH

--
Allolex

In reply to Re: boundary reg expression by allolex
in thread boundary reg expression by Anonymous Monk

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