Does this help you?

s[ 
    (         ## Capture
        \(      ## from an open paren
        [^)]+   ## all non-close paren chars
        \)      ## upto the close paren
    ) 
][ 
    ## assign the captured text 
    ## to a local variable so that it can be edited
    ## and then replace all ,s with ;s
    ( my $x = $1 ) =~ tr[,][;];
    ## and return the modified text to replace that captured.
    $x 
]
g  ## globally
e  ## execute the replace as code 
x; ## extended notation to allow whitespace and comments

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With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
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In reply to Re^3: Substituting a comma only when it is preceded and followed by a bracket by BrowserUk
in thread Substituting a comma only when it is preceded and followed by a bracket by barraclm

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