I have a string that looks like this:

blah blah, blah blah blah (blah, blah, blah), blah, blah

I want to change the commas inside the parentheses into something else, say a semi-colon so that the string looks like

blah blah, blah blah blah (blah; blah; blah), blah, blah

There may or may not be commas either before or after the parentheses and there could be any number of commas inside the parentheses. The text on either side and inside of the parentheses is also completely variable.

Any help would be very much appreciated.

In reply to Substituting a comma only when it is preceded and followed by a bracket by barraclm

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