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  1. or download this
    /foo  # Match starting at foo
     (         # Capture
    ...
     )         # End capture
     bar  # and ending at bar
    /x;
    
  2. or download this
     (?:       # Complex expression:
       (?!Lib) #   make sure we're not at the beginning of Lib
       [^\n]       #   accept any character
     )+        # any positive number of times