A solution without alternation and without assertions: 
s { \A /*  (  (?: [^/]+ /+ )*?  [^/]*  )  /* \z }
  { length $1 ? "/$1/" : '/' }ex;

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I got lazy and copped out with the /e for that edge case.. :)

Makeshifts last the longest.

In reply to Re: Regex - one and only one / at beginning and end of file path by Aristotle
in thread Regex - one and only one / at beginning and end of file path by mikedshelton

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