The kvoptions package

1019 \KVO@GetClassOptionsList1020 \toks@\expandafter{\KVO@classoptionslist,}%1021 \fi1022 \toks\tw@\expandafter{\@curroptions}%1023 \edef\x{\endgroup1024 \noexpand\in@{,\CurrentOption,}{,\the\toks@\the\toks\tw@,}%1025 }%1026 \x1027 \ifin@1028 \KVO@use@ption1029 \expandafter\let\csname ds@\CurrentOption\endcsname\@empty1030 \fi1031 \fi1032 }%1033 \KVO@process@pti@ns1034 }1035 \def\KVO@xprocess@ptions{%1036 \ifx\@currext\@clsextension1037 \else1038 \KVO@GetClassOptionsList1039 \@for\CurrentOption:=\KVO@classoptionslist\do{%1040 \ifx\CurrentOption\@empty1041 \else1042 \KVO@in@\CurrentOption\@declaredoptions1043 \ifin@1044 \KVO@use@ption1045 \expandafter\let\csname ds@\CurrentOption\endcsname\@empty1046 \fi1047 \fi1048 }%1049 \fi1050 \KVO@process@pti@ns1051 }1052 \def\KVO@in@#1#2{%1053 \in@false1054 \begingroup1055 \@for\x:=#2\do{%1056 \ifx\x#1\relax1057 \in@true1058 \fi1059 }%1060 \edef\x{\endgroup1061 \ifin@1062 \noexpand\in@true1063 \fi1064 }%1065 \x1066 }1067 \def\KVO@process@pti@ns{%1068 \@for\CurrentOption:=\@curroptions\do{%1069 \@ifundefined{ds@\KVO@SanitizedCurrentOption}{%1070 \KVO@use@ption1071 \default@ds1072 }%1073 \KVO@use@ption1074 }%1075 \@for\CurrentOption:=\@declaredoptions\do{%1076 \expandafter\let\csname ds@\CurrentOption\endcsname\relax1077 }%1078 \let\CurrentOption\@empty1079 \let\@fileswith@pti@ns\@@fileswith@pti@ns1080 \AtEndOfPackage{\let\@unprocessedoptions\relax}%32