bash - Remove previous line to a match string? -

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How can I remove the last line of a match pattern?

or

Contrast: 

  sed -n '/ pattern / {g; 1! P;}; H '

You can return the file and then return the line after the matte pattern (Which is simple), and then return the result, here is the code: 

  tail-r | SAD / Pattern / {n; D;} 'tail-r

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