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m//x ignores whitespace before ?*+{}

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m//x ignores whitespace before ?*+{}

The m//x construct has always been intended to ignore all unescaped whitespace. However, before Perl 5.004, whitespace had the effect of escaping repeat modifiers like ``*'' or ``?''; for example, /a *b/x was (mis)interpreted as /a\*b/x. This bug has been fixed in 5.004.

Source: what's new for perl5.004
Copyright: Larry Wall, et al.

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(Corrections, notes, and links courtesy of RocketAware.com)

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