To make it behave as you describe, use (?>\s*). The (?> ) says whatever is in it will match whatever it would match at that point in the string as an independent expression. So if matching all the spaces makes something later on fail, it won't backtrack and try having the \s* match fewer spaces.
(It's really time to unmark all of the extensions as experimental, except perhaps how variables in (?{}) and (??{}) bind.)
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Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
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Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
intervention).
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Want more info? How to link or
or How to display code and escape characters
are good places to start.
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