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15 lines
160 B
15 lines
160 B
:noblank
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s/ //
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s/[ ][ ]*$//
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/^$/{
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p
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:delete
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N
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s/\n//
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s/ //
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s/[ ][ ]*$//
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/^$/{
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b delete
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}
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b noblank
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}
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