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REMDUPE(L,S)
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;L is the input listing
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;S is the separator between entries
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;R is the list to be returned
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NEW Z,I,R
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FOR I=1:1:$LENGTH(L,S) SET Z($PIECE(L,S,I))=""
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;Repack for return
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SET I="",R=""
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FOR SET I=$O(Z(I)) QUIT:I="" SET R=$SELECT($L(R)=0:I,1:R_S_I)
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KILL Z,I
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QUIT R
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