I think you mean \s, not /s.
That and I'm not sure why a space is of concern... it generally shouldn't be unless you're using system with shell characters (and even then you can get around it).
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Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
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Snippets of code should be wrapped in
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tags should generally be avoided. If they must
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taken to ensure that their contents do not
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Want more info? How to link or
or How to display code and escape characters
are good places to start.