Remove double empty lines in Visual Studio 2012

• 1 Open the Find & Replace dialog (Ctrl+H)
  
• 2 Tick 'Use Regular Expressions' and in Find specify:
  
• 3 ^(?([^\r\n])\s)*\r?\n(?([^\r\n])\s)*\r?\n
  
• 4 In Replace box delete everything
  
• 5 Click Replace all
  
• N Visual Studio 2012 changed it's regex syntax
  

References

• http://msdn.microsoft.com/en-us/library/2k3te2cs(v=vs.110).aspx
• http://stackoverflow.com/questions/12453160/remove-empty-lines-in-text-using-visual-studio