From: "Jan E." <lists@...>
Date: 2012-04-19T05:02:15+09:00
Subject: Re: Converting CSV

Well, parsing the file and processing its content is certainly more 
difficult than doing search and replace.

File.open 'myfile.csv', 'r+' do |csv|
  new_csv = csv.read.gsub(/[^\n\r;]+/, '"\0"').gsub(';', ',')
  csv.print new_csv
end

This quotes everything between the semicolons and then replaces them 
with commas.

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