regex - What is the meaning of the following expression in scala? -

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I am trying to understand a source code .. (originally a regedx parser) .. but I can not understand I am the following expression: 

  DRF quotes = a "???" Line ~ & Gt; "[^ '] +". R & lt; ~ "'"   
 So I think [^'] means that everything except a single quote is found? right?? But what are the double quotes next to it .. And what are the double-quotes squawwed arrows inside the double quotes?   
 
 
  "'" ~ & gt; "[^ '] +". R & lt; ~ "'"  matches a single bid block:  
 Single quote ( "'" ") + Multiple non-single-quote characters ( "[^ '] +". R ) ends with a single quote ( "'" ). P>

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