new latex package skeyval 0.5 (4mar10)

git-svn-id: svn://tug.org/texlive/trunk@17321 c570f23f-e606-0410-a88d-b1316a301751

1 files changed, 1679 insertions, 0 deletions

diff --git a/Master/texmf-dist/tex/latex/skeyval/skeyval.sty b/Master/texmf-dist/tex/latex/skeyval/skeyval.sty
new file mode 100644
index 00000000000..2f8ed0862be
--- /dev/null
+++ b/Master/texmf-dist/tex/latex/skeyval/skeyval.sty
@@ -0,0 +1,1679 @@
+%++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++%
+%                                                                                    %
+% This is file 'skeyval.sty', version 0.5.                                           %
+%                                                                                    %
+% Please see the package documentation for user guide.                               %
+%                                                                                    %
+% This package and accompanying files may be distributed and/or modified under       %
+% the conditions of the LaTeX Project Public License, either version 1.3 of          %
+% this license or any later version. The latest version of this license is in        %
+% http://www.latex-project.org/lppl.txt and version 1.3 or later is part of all      %
+% distributions of LaTeX version 2005/12/01 or later.                                %
+%                                                                                    %
+% The LPPL maintenance status of this software is 'author-maintained'.               %
+%                                                                                    %
+% This software is provided 'as it is', without warranty of any kind, either         %
+% expressed or implied, including, but not limited to, the implied warranties of     %
+% merchantability and fitness for a particular purpose.                              %
+%                                                                                    %
+% Copyright (c) 2010 Ahmed Musa (a.musa@rocketmail.com).                             %
+%                                                                                    %
+%++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++%
+
+\begingroup
+\catcode064 11% @
+\catcode123 01% {
+\catcode125 02% }
+\def\SKV@tempa{\endgroup
+  \edef\SKV@restorecodes{%
+    \catcode035 \the\catcode035% #
+    \catcode064 \the\catcode064% @
+    \catcode123 \the\catcode123% {
+    \catcode125 \the\catcode125% }
+    \catcode061 \the\catcode061% =
+  }%
+}
+\SKV@tempa
+\catcode035 06% #
+\catcode064 11% @
+\catcode123 01% {
+\catcode125 02% }
+\def\SKV@ensurecode#1#2{%
+  \edef\SKV@restorecodes{%
+    \SKV@restorecodes
+    \catcode#1 \the\catcode#1\relax
+  }%
+  \catcode#1 #2\relax
+}
+\AtEndOfPackage{\SKV@restorecodes}
+\SKV@ensurecode{061}{12}% =
+\SKV@ensurecode{044}{12}% ,
+\SKV@ensurecode{058}{12}% :
+\SKV@ensurecode{059}{12}% ;
+\SKV@ensurecode{010}{12}% ^^J
+\SKV@ensurecode{126}{13}% ~
+\def\SKV@rcsid$#1: #2 #3 #4 #5${#4 v#3}
+\ProvidesPackage{skeyval}%
+  [\SKV@rcsid $Id: skeyval.sty,v 0.5 2010/02/26 09:00:00 Ahmed Musa $
+  Extensions to the xkeyval parser (AM)]
+\NeedsTeXFormat{LaTeX2e}[1996/12/01]
+\@ifpackageloaded{xkeyval}\relax{\RequirePackage{xkeyval}[2008/08/13]}
+\ifnum0=0%
+  \ifx\eTeXversion\SKV@undefined 1\else\ifnum\eTeXversion<\tw@ 1\fi\fi
+\else
+  \@latex@error{eTeX not loaded or old version}{%
+    This package requires eTeX version 2 or later.}%
+\fi
+\@ifdefinable\SKV@ifdefinable\relax
+\def\SKV@ifdefinable#1{%
+  \edef\reserved@a{\expandafter\@gobble\string#1}%
+  \ifdefined#1%
+    \ifx#1\relax
+      \expandafter\expandafter\expandafter\@firstofone
+    \else
+      \expandafter\expandafter\expandafter\@notdefinable
+    \fi
+  \else
+    \edef\reserved@b{\expandafter\@carcube\reserved@a xxx\@nil}%
+    \ifx\reserved@b\@qend
+      \expandafter\expandafter\expandafter\@notdefinable
+    \else
+      \ifx\reserved@a\@qrelax
+        \expandafter\expandafter\expandafter\expandafter
+        \expandafter\expandafter\expandafter\@notdefinable
+      \else
+        \expandafter\expandafter\expandafter\expandafter
+        \expandafter\expandafter\expandafter\@firstofone
+      \fi
+    \fi
+  \fi
+}
+\SKV@ifdefinable\SKV@def{\protected\def\SKV@def{\@star@or@long\SKV@aux@def}}
+\SKV@ifdefinable\SKV@aux@def{%
+  \def\SKV@aux@def#1{\SKV@ifdefinable#1{\l@ngrel@x\def#1}}}
+\SKV@ifdefinable\SKV@gdef{\protected\def\SKV@gdef{\@star@or@long\SKV@aux@gdef}}
+\SKV@ifdefinable\SKV@aux@gdef{%
+  \def\SKV@aux@gdef#1{\SKV@ifdefinable#1{\global\l@ngrel@x\def#1}}}
+\SKV@ifdefinable\SKV@edef{\protected\def\SKV@edef{\@star@or@long\SKV@aux@edef}}
+\SKV@ifdefinable\SKV@aux@edef{%
+  \def\SKV@aux@edef#1{\SKV@ifdefinable#1{\l@ngrel@x\edef#1}}}
+\SKV@ifdefinable\SKV@pdef{\protected\def\SKV@pdef{\@star@or@long\SKV@aux@pdef}}
+\SKV@ifdefinable\SKV@aux@pdef{%
+  \def\SKV@aux@pdef#1{\SKV@ifdefinable#1{\protected\l@ngrel@x\def#1}}}
+\SKV@ifdefinable\SKV@pedef{\protected\def\SKV@pedef{\@star@or@long\SKV@aux@pedef}}
+\SKV@ifdefinable\SKV@aux@pedef{%
+  \def\SKV@aux@pedef#1{\SKV@ifdefinable#1{\protected\l@ngrel@x\edef#1}}}
+\SKV@pdef\SKV@defined@err#1{\def\reserved@a{#1}\@notdefinable}
+\SKV@def\SKV@for@ifdefinable#1{%
+  \SKV@CommandGenParser{,}%
+  \SKV@for@b#1\SKV@tempa{%
+    \SKV@expandargs{1}\KV@@sp@def\SKV@tempa\SKV@tempa\SKV@nil
+    \if\expandafter\expandafter\expandafter\SKV@car\expandafter
+      \string\SKV@tempa\SKV@nil\@backslashchar
+      \SKV@err{Backslash not allowed}\@ehc
+    \fi
+    \SKV@ifnameundef\SKV@tempa{}{\SKV@defined@err\SKV@tempa}%
+  }%
+}
+\SKV@pdef\SKV@info#1{\PackageInfo{skeyval}{#1\@gobble}}
+\SKV@pdef\SKV@warn#1{\PackageWarningNoLine{skeyval}{#1}}
+\SKV@pdef\SKV@err#1#2{\PackageError{skeyval}{#1}{#2}}
+\SKV@def*\SKV@nil{\noexpand\SKV@nil}
+\SKV@def*\SKV@nnil{\SKV@nil}
+\SKV@def\SKV@car#1#2\SKV@nil{#1}
+\gdef\@notprerr{\SKV@err{You've issued a preamble command here}%
+  {Take command to preamble.}}
+\SKV@pdef\SKV@afterfi#1\fi{\fi#1}
+\SKV@pdef\SKV@afterelsefi#1\else#2\fi{\fi#1}
+\SKV@def\SKV@aftercsname#1#2{\expandafter#1\csname#2\endcsname}
+\SKV@def\SKV@findescape#1{%
+  \begingroup\escapechar92 \expandafter\endgroup
+  \if\expandafter\SKV@car\string#1\SKV@nil\@backslashchar
+    \expandafter\@firstoftwo
+  \else
+    \expandafter\@secondoftwo
+  \fi
+}
+\SKV@def*\SKV@expandox#1{\unexpanded\expandafter{#1}}
+\SKV@def*\SKV@expandnameox#1{\SKV@aftercsname\SKV@expandox{#1}}
+\SKV@def*\SKV@expandtx#1{\unexpanded\expandafter\expandafter\expandafter{#1}}
+\SKV@def*\SKV@expandnametx#1{\SKV@aftercsname\SKV@expandtx{#1}}
+\SKV@def*\SKV@noexpandcs#1{\SKV@aftercsname\noexpand{#1}}
+\SKV@pdef\SKV@undef#1{\let#1\SKV@undefined}
+\SKV@pdef\SKV@gundef#1{\global\let#1\SKV@undefined}
+\SKV@pdef\SKV@nameundef#1{\SKV@aftercsname\let{#1}\SKV@undefined}
+\SKV@pdef\SKV@namegundef#1{\global\SKV@aftercsname\let{#1}\SKV@undefined}
+\SKV@def\SKV@ifdef#1{%
+  \ifdefined#1%
+    \expandafter\@firstoftwo
+  \else
+    \expandafter\@secondoftwo
+  \fi
+}
+\SKV@def\SKV@ifundef#1{%
+  \ifdefined#1%
+    \ifx#1\relax
+      \expandafter\expandafter\expandafter\@firstoftwo
+    \else
+      \expandafter\expandafter\expandafter\@secondoftwo
+    \fi
+  \else
+    \expandafter\@firstoftwo
+  \fi
+}
+\SKV@def*\SKV@ifnamedef#1{%
+  \ifcsname#1\endcsname
+    \expandafter\@firstoftwo
+  \else
+    \expandafter\@secondoftwo
+  \fi
+}
+\SKV@def*\SKV@ifnameundef#1{%
+  \ifcsname#1\endcsname
+    \expandafter\ifx\csname#1\endcsname\relax
+      \expandafter\expandafter\expandafter\@firstoftwo
+    \else
+      \expandafter\expandafter\expandafter\@secondoftwo
+    \fi
+  \else
+    \expandafter\@firstoftwo
+  \fi
+}
+\SKV@def\SKV@remparser#1#2{%
+  \def\tok@i{#1}\edef\tok@ii{#1#2}%
+  \ifx#2\@empty\else
+    \def\SKV@remove#1##1\SKV@nil{\def\tok@ii{##1}}%
+    \SKV@r@move\let#2\tok@ii
+  \fi
+}
+\SKV@def*\SKV@r@move{\expandafter\SKV@rem@ve\tok@ii\SKV@nil}
+\SKV@def*\SKV@rem@ve{\futurelet\@temptoks\SKV@remo@e}
+\SKV@def*\SKV@remo@e#1\SKV@nil{%
+  \if\@temptoks\tok@i
+    \expandafter\SKV@remove\tok@ii\SKV@nil
+    \SKV@r@move
+  \fi
+}
+\SKV@def\SKV@apptomacro@a#1#2{%
+  \SKV@findescape{#1}{}{%
+    \SKV@err{Bad argument '\string#1'}{Backslash required in '\string#1'.}%
+  }%
+  \SKV@ifundef{#1}{%
+    \edef#1{\unexpanded{#2}}%
+  }{%
+    \edef#1{\SKV@expandox#1\unexpanded{#2}}%
+  }%
+}
+\SKV@def\SKV@apptomacro@b#1#2{%
+  \SKV@findescape{#1}{}{%
+    \SKV@err{Bad argument '\string#1'}{Backslash required in '\string#1'.}%
+  }%
+  \SKV@ifundef{#1}{%
+    \edef#1{\SKV@expandox{#2}}%
+  }{%
+    \xdef#1{\SKV@expandox#1\SKV@expandox{#2}}%
+  }%
+}
+\SKV@def\SKV@preptomacro@a#1#2{%
+  \SKV@findescape{#1}{}{%
+    \SKV@err{Bad argument '\string#1'}{Backslash required in '\string#1'.}%
+  }%
+  \SKV@ifundef{#1}{%
+    \edef#1{\unexpanded{#2}}%
+  }{%
+    \edef#1{\unexpanded{#2}\SKV@expandox#1}%
+  }%
+}
+\SKV@def\SKV@preptomacro@b#1#2{%
+  \SKV@findescape{#1}{}{%
+    \SKV@err{Bad argument '\string#1'}{Backslash required in '\string#1'.}%
+  }%
+  \SKV@ifundef{#1}{%
+    \edef#1{\SKV@expandox{#2}}%
+  }{%
+    \edef#1{\SKV@expandox{#2}\SKV@expandox#1}%
+  }%
+}
+\SKV@def\SKV@gapptomacro@a#1#2{%
+  \SKV@findescape{#1}{}{%
+    \SKV@err{Bad argument '\string#1'}{Backslash required in '\string#1'.}%
+  }%
+  \SKV@ifundef{#1}{%
+    \xdef#1{\unexpanded{#2}}%
+  }{%
+    \xdef#1{\SKV@expandox#1\unexpanded{#2}}%
+  }%
+}
+\SKV@def\SKV@gapptomacro@b#1#2{%
+  \SKV@findescape{#1}{}{%
+    \SKV@err{Bad argument '\string#1'}{Backslash required in '\string#1'.}%
+  }%
+  \SKV@ifundef{#1}{%
+    \xdef#1{\SKV@expandox{#2}}%
+  }{%
+    \xdef#1{\SKV@expandox#1\SKV@expandox{#2}}%
+  }%
+}
+\SKV@def\SKV@gpreptomacro@a#1#2{%
+  \SKV@findescape{#1}{}{%
+    \SKV@err{Bad argument '\string#1'}{Backslash required in '\string#1'.}%
+  }%
+  \SKV@ifundef{#1}{%
+    \xdef#1{\unexpanded{#2}}%
+  }{%
+    \xdef#1{\unexpanded{#2}\SKV@expandox#1}%
+  }%
+}
+\SKV@def\SKV@gpreptomacro@b#1#2{%
+  \SKV@findescape{#1}{}{%
+    \SKV@err{Bad argument '\string#1'}{Backslash required in '\string#1'.}%
+  }%
+  \SKV@ifundef{#1}{%
+    \xdef#1{\SKV@expandox{#2}}%
+  }{%
+    \xdef#1{\SKV@expandox{#2}\SKV@expandox#1}%
+  }%
+}
+\SKV@def*\@afterpackageloaded#1{%
+  \SKV@ifnamedef{ver@#1.\@pkgextension}{%
+    \let\SKV@tempa\@firstofone
+  }{%
+    \def\SKV@tempa{\SKV@aftercsname\SKV@apptomacro@a{#1.\@pkgextension @afpl}}%
+  }%
+  \SKV@tempa
+}
+\SKV@preptomacro@a\@popfilename{%
+  \SKV@nameuse{\@currname.\@currext @afpl}%
+  \SKV@nameundef{\@currname.\@currext @afpl}%
+}
+\@onlypreamble\@afterpackageloaded
+\SKV@def\ReserveKeyPrefixNames#1{\SKV@apptomacro@a\SKV@rkpnames{,#1}}
+\SKV@def\ReserveMacroPrefixNames#1{\SKV@apptomacro@a\SKV@rmpnames{,#1}}
+\SKV@def\ReserveFamilyNames#1{\SKV@apptomacro@a\SKV@rfnames{,#1}}
+\SKV@def*\SKV@rkpnames{XKV}
+\SKV@def*\SKV@rmpnames{XKV}
+\SKV@def*\SKV@rfnames{XKV}
+\SKV@pdef*\SKV@CommandGenParser#1{%
+  \def\parser{#1}%
+  \protected\long\def\SKV@for@a##1##2##3{%
+    \edef##2{\unexpanded{##1}}%
+    \SKV@oifblank{##2}\SKV@fornoop\SKV@forloop
+    ##2{##3}##1#1\SKV@nil#1%
+  }%
+  \long\def\SKV@forloop##1##2##3#1{%
+    \edef##1{\unexpanded{##3}}%
+    \ifx##1\SKV@nnil
+      \expandafter\@gobbletwo
+    \else
+      ##2\expandafter\SKV@forloop
+    \fi
+    ##1{##2}%
+  }%
+  \long\def\SKV@fornoop##1\SKV@nil#1{}%
+}
+\SKV@pdef\SKV@for@b#1{\expandafter\SKV@for@a\expandafter{#1}}
+\SKV@pdef*\SKV@tfor@a#1#2#3{\SKV@ifblank{#2}{}{\@tf@r#1{#2}\do{#3}}}
+\SKV@pdef*\SKV@tfor@b#1#2#3{%
+  \SKV@expandargs{3}{\SKV@tfor@a#1}{{\SKV@expandox{#2}}}{{#3}}\SKV@nil
+}
+\SKV@def\SKV@checksanitizec#1#2{%
+  \XKV@ch@cksanitize{#1}#2;%
+  \ifin@\else\XKV@ch@cksanitize{#1}#2,\fi
+  \ifin@\@selective@sanitize[0]{,;}#2\fi
+}
+\SKV@def*\SKV@CommandKeyParser#1{%
+  \long\def\SKV@define@keylist##1{%
+    \ifXKV@st
+      \long\expandafter\def\expandafter\SKV@tempa\expandafter{##1}%
+    \else
+      \long\def\SKV@tempa{##1}%
+    \fi
+    \SKV@expandargs{3}\SKV@checksanitizec{{\SKV@expandox{\SKV@tempa}}}%
+      \SKV@tempa\SKV@nil
+    \def\SKV@nob{\z@}%
+    \expandafter\SKV@readkeylist\SKV@tempa#1\SKV@nil
+  }%
+  \long\def\SKV@readkeylist##1#1##2\SKV@nil{%
+    \SKV@ifblank{##1}\relax
+    {%
+      \SKV@ifstrequal{##1}{\stopread}{%
+        \def\SKV@nob{\@ne}%
+        \stopread##2\SKV@nil
+      }{%
+        \SKV@define@mult@keys##1\SKV@nil
+      }%
+    }%
+    \ifnum\SKV@nob=\z@
+      \SKV@ifblank{##2}\relax{\SKV@readkeylist##2\SKV@nil}%
+    \fi
+  }%
+}
+\SKV@def\SKV@expandargs#1#2#3#4\SKV@nil{%
+  \begingroup
+  \protected@edef\SKV@tempa{\endgroup
+    \ifcase#1\relax
+      \unexpanded{#2}{#3}%
+    \or
+      \unexpanded{#2#3}{#4}%
+    \or
+      \unexpanded{#2}{#3}{#4}%
+    \or
+      \unexpanded{#2}#3\unexpanded{#4}%
+    \else
+      \SKV@err{Unknown expansion type '#1' for \string\SKV@expandargs}%
+        {Use the right expansion identifier (0 - 3)}%
+    \fi
+  }%
+  \SKV@tempa
+}
+\SKV@pdef\SKV@checkchoice#1#2#3#4{%
+  \SKV@expandargs{3}{\XKV@cc*+[\val\nr]}{{#1}{#2}}{{#3}{#4}}\SKV@nil
+}
+\SKV@pdef*\SKV@inputerr#1#2{%
+  \SKV@err{Erroneous value '#1' for key '#2'}{%
+    Please use the correct value for key '#2'.}%
+}
+\SKV@def\SKV@ifblank#1{\SKV@ifbl@nk#1\SKV@nil\SKV@nil\@secondoftwo\@firstoftwo:}
+\SKV@def\SKV@ifbl@nk#1#2\SKV@nil#3#4#5:{#4}
+\SKV@def\SKV@oifblank#1{\SKV@expandargs{0}\SKV@ifblank{\SKV@expandox{#1}}\SKV@nil}
+\SKV@def\SKV@xifblank#1{\SKV@expandargs{0}\SKV@ifblank{#1}\SKV@nil}
+\SKV@def\SKV@ifstrequal#1#2{%
+  \begingroup
+  \edef\SKV@tempa{\detokenize{#1}}%
+  \edef\SKV@tempb{\detokenize{#2}}%
+  \SKV@expandargs{1}\KV@@sp@def\SKV@tempa\SKV@tempa\SKV@nil
+  \SKV@expandargs{1}\KV@@sp@def\SKV@tempb\SKV@tempb\SKV@nil
+  \ifx\SKV@tempa\SKV@tempb
+    \aftergroup\@firstoftwo
+  \else
+    \aftergroup\@secondoftwo
+  \fi
+  \endgroup
+}
+\SKV@def\SKV@oifstrequal#1#2{%
+  \@expandtwoargs\SKV@ifstrequal{\SKV@expandox{#1}}{\SKV@expandox{#2}}%
+}
+\SKV@def\SKV@xifstrequal#1#2{\@expandtwoargs\SKV@ifstrequal{#1}{#2}}
+\SKV@def\SKV@ifstrempty#1{%
+  \romannumeral-`\@\csname @\if @\detokenize{#1}@first\else
+  second\fi oftwo\endcsname
+}
+\SKV@def\SKV@oifstrempty#1{%
+  \SKV@expandargs{0}\SKV@ifstrempty{\SKV@expandox{#1}}\SKV@nil}
+\SKV@def\SKV@xifstrempty#1{\SKV@expandargs{0}\SKV@ifstrempty{#1}\SKV@nil}
+\SKV@def*\SKV@keylistparser@err{%
+  \SKV@err{Key list parser '\SKV@keyparser' not allowed}%
+    {Use semicolon (preferable) or colon as parser.}%
+}
+\define@boolkey+[KV]{skeyval}[SKV@]{xchoicelist}[true]{}{%
+  \SKV@inputerr{#1}{xchoicelist}%
+}
+\define@boolkey+[KV]{skeyval}[SKV@]{inputonce}[true]{}{%
+  \SKV@inputerr{#1}{inputonce}%
+}
+\define@cmdkey[KV]{skeyval}[SKV@]{genparser}[,]{%
+  \@onelevel@sanitize\SKV@genparser
+  \SKV@expandargs{1}\KV@@sp@def\SKV@genparser\SKV@genparser\SKV@nil
+  \SKV@expandargs{0}\SKV@CommandGenParser\SKV@genparser\SKV@nil
+}
+\define@cmdkey[KV]{skeyval}[SKV@]{keyparser}[;]{%
+  \@onelevel@sanitize\SKV@keyparser
+  \SKV@xifblank\SKV@keyparser\SKV@keylistparser@err\relax
+  \SKV@expandargs{1}\KV@@sp@def\SKV@keyparser\SKV@keyparser\SKV@nil
+  \begingroup
+  \edef\SKV@tempa{\detokenize{,}}%
+  \ifx\SKV@keyparser\SKV@tempa
+    \aftergroup\SKV@keylistparser@err
+  \fi
+  \endgroup
+  \SKV@expandargs{0}\SKV@CommandKeyParser\SKV@keyparser\SKV@nil
+}
+\SKV@def*\SKV@keyprefix@err{%
+  \SKV@err{Key prefix '\SKV@keyprefix' is not allowed}%
+    {Use another prefix instead of '\SKV@keyprefix'.}%
+}
+\define@cmdkey[KV]{skeyval}[SKV@]{keyprefix}[KV]{%
+  \SKV@xifblank\SKV@keyprefix\SKV@keyprefix@err\relax
+  \SKV@expandargs{1}\KV@@sp@def\SKV@keyprefix\SKV@keyprefix\SKV@nil
+  \SKV@expandargs{3}\XKV@checksanitizeb{{\SKV@rkpnames}}\SKV@tempa\SKV@nil
+  \SKV@CommandGenParser{,}%
+  \SKV@for@b\SKV@tempa\SKV@tempa{%
+    \ifx\SKV@keyprefix\SKV@tempa\SKV@afterfi\SKV@keyprefix@err\fi
+  }%
+}
+\SKV@def*\SKV@keyfamily@err{%
+  \SKV@err{Key family '\SKV@keyfamily' is not allowed}%
+    {Use another family name instead of '\SKV@keyfamily'.}%
+}
+\define@cmdkey[KV]{skeyval}[SKV@]{keyfamily}[fam]{%
+  \SKV@xifblank\SKV@keyfamily\SKV@keyfamily@err\relax
+  \SKV@expandargs{1}\KV@@sp@def\SKV@keyfamily\SKV@keyfamily\SKV@nil
+  \SKV@expandargs{3}\XKV@checksanitizeb{{\SKV@rfnames}}\SKV@tempa\SKV@nil
+  \SKV@CommandGenParser{,}%
+  \SKV@for@b\SKV@tempa\SKV@tempa{%
+    \ifx\SKV@keyfamily\SKV@tempa\SKV@afterfi\SKV@keyfamily@err\fi
+  }%
+}
+\SKV@def*\SKV@macroprefix@err{%
+  \SKV@err{Macro prefix '\SKV@macroprefix' is not allowed}%
+    {Use another macro prefix.}%
+}
+\define@cmdkey[KV]{skeyval}[SKV@]{macroprefix}[mp@]{%
+  \SKV@xifblank\SKV@macroprefix\SKV@macroprefix@err\relax
+  \SKV@expandargs{1}\KV@@sp@def\SKV@macroprefix\SKV@macroprefix\SKV@nil
+  \SKV@expandargs{3}\XKV@checksanitizeb{{\SKV@rmpnames}}\SKV@tempa\SKV@nil
+  \SKV@CommandGenParser{,}%
+  \SKV@for@b\SKV@tempa\SKV@tempa{%
+    \ifx\SKV@macroprefix\SKV@tempa\SKV@afterfi\SKV@macroprefix@err\fi
+  }%
+}
+\DeclareOptionX*{\SKV@warn{Unknown option '\CurrentOption' ignored}}
+\ExecuteOptionsX[KV]<skeyval>{genparser,keyparser,keyprefix,
+  keyfamily,macroprefix,inputonce}
+\ProcessOptionsX*[KV]<skeyval>\relax
+\SKV@pdef*\skvoptions#1{\setkeys[KV]{skeyval}{#1}}
+\SKV@def*\SKV@despacelist#1#2{%
+  \SKV@CommandGenParser{#1}%
+  \let\SKV@tempa#2%
+  \let#2\@empty
+  \SKV@for@b\SKV@tempa\SKV@tempa{%
+    \SKV@expandargs{1}\KV@@sp@def\SKV@tempa\SKV@tempa\SKV@nil
+    \SKV@apptomacro@b#2{\expandafter#1\SKV@tempa}%
+  }%
+  \ifx#2\@empty\else
+    \SKV@remparser{#1}#2%
+  \fi
+}
+\SKV@def\SKV@named@f#1#2{%
+  \ifcsname#2\endcsname
+    \expandafter\ifx\csname#2\endcsname\relax\else
+      \def\reserved@a{#2}%
+      \expandafter\expandafter\expandafter\@notdefinable
+    \fi
+  \else
+    \expandafter#1\csname#2\expandafter\endcsname
+  \fi
+}
+\SKV@def*\SKV@newnamedef#1{\SKV@named@f\def{#1}}
+\SKV@def*\SKV@newnamegdef#1{\SKV@named@f\gdef{#1}}
+\SKV@def*\SKV@newnameedef#1{\SKV@named@f\edef{#1}}
+\SKV@def*\SKV@newnamexdef#1{\SKV@named@f\xdef{#1}}
+\SKV@def*\SKV@namedef#1{\SKV@aftercsname\def{#1}}
+\SKV@def*\SKV@namegdef#1{\SKV@aftercsname\gdef{#1}}
+\SKV@def*\SKV@nameedef#1{\SKV@aftercsname\edef{#1}}
+\SKV@def*\SKV@namexdef#1{\SKV@aftercsname\xdef{#1}}
+\SKV@def*\SKV@nameuse#1{%
+  \ifcsname#1\endcsname\csname#1\expandafter\endcsname\fi}
+\SKV@def\SKV@ifnextchar#1#2#3{%
+  \let\SKV@@tempc=#1\def\SKV@@tempa{#2}\def\SKV@@tempb{#3}%
+  \futurelet\@temptoks\SKV@ifnextch@r
+}
+\SKV@def\SKV@ifnextch@r{%
+  \ifx\@temptoks\SKV@@tempc\let\SKV@@tempb\SKV@@tempa\fi
+  \SKV@@tempb
+}
+\SKV@def\SKV@testopt#1#2{\SKV@ifnextchar[{#1}{#1[{#2}]}}
+\SKV@def\SKV@ifstar#1#2{%
+  \SKV@ifnextchar*{\begingroup
+    \def\SKV@tempa*{\endgroup #1}\SKV@tempa}{#2}%
+}
+\SKV@def*\SKV@newlet#1#2{%
+  \SKV@ifdef#1{%
+    \SKV@err{Command '\string#1' already defined}{%
+      I can't let '\string#1' to '\string#2'.}%
+  }{%
+    \SKV@ifdef#2{%
+      \let#1#2%
+    }{%
+      \SKV@err{Command '\string#2' undefined}{%
+        I can't let '\string#1' to '\string#2'.}%
+    }%
+  }%
+}
+\SKV@pdef*\SKV@newtoks#1{\SKV@ifdefinable#1{\@nameuse{newtoks}#1}}
+\SKV@pdef*\SKV@newcount#1{\SKV@ifdefinable#1{\@nameuse{newcount}#1}}
+\SKV@pdef*\SKV@newdimen#1{\SKV@ifdefinable#1{\@nameuse{newdimen}#1}}
+\SKV@def*\nameletcs#1#2{%
+  \SKV@ifdef{#2}{%
+    \SKV@aftercsname\let{#1}#2%
+  }{%
+    \SKV@err{Command '\string#2' undefined}\@ehc
+  }%
+}
+\SKV@def*\csletname#1#2{%
+  \SKV@ifnamedef{#2}{%
+    \expandafter\let\expandafter#1\csname#2\endcsname
+  }{%
+    \SKV@err{Command '\@backslashchar#2' undefined}\@ehc
+  }%
+}
+\SKV@def*\nameletname#1#2{%
+  \SKV@ifnamedef{#2}{%
+    %\expandafter\let\csname#1\expandafter\endcsname\csname#2\endcsname
+    \SKV@aftercsname\let{#1\SKV@aftercsname}{#2}%
+  }{%
+    \SKV@err{Command '\@backslashchar#2' undefined}\@ehc
+  }%
+}
+\SKV@def*\@nameletcs#1#2{\SKV@aftercsname\let{#1}#2}
+\SKV@def*\@csletname#1#2{%
+  \begingroup\expandafter\endgroup
+  \expandafter\let\expandafter#1\csname#2\endcsname
+}
+\SKV@def*\@nameletname#1#2{%
+  \begingroup\expandafter\endgroup
+  \expandafter\let\csname#1\SKV@aftercsname\endcsname{#2}%
+}
+\SKV@pdef*\SKV@numdef#1#2{%
+  \SKV@findescape{#1}{}{\SKV@err{Backslash required in '#1'}\@ehc}%
+  \SKV@ifstrempty{#2}{\SKV@err{Empty argument for counter '#1'}\@ehc}{}%
+  \SKV@ifundef{#1}{%
+    \newcount#1#1=\numexpr#2\relax
+  }{%
+    #1=\numexpr#2\relax
+  }%
+}
+\SKV@pdef*\SKV@numnamedef#1{\SKV@aftercsname\SKV@numdef{#1}}
+\SKV@pdef*\SKV@numgdef#1#2{%
+  \SKV@findescape{#1}{}{\SKV@err{Backslash required in '#1'}\@ehc}%
+  \SKV@ifstrempty{#2}{\SKV@err{Empty argument for counter '#1'}\@ehc}{}%
+  \SKV@ifundef{#1}{%
+    \newcount#1\global#1=\numexpr#2\relax
+  }{%
+    \global#1=\numexpr#2\relax
+  }%
+}
+\SKV@pdef*\SKV@numnamegdef#1{\SKV@aftercsname\SKV@numgdef{#1}}
+\SKV@pdef*\SKV@dimdef#1#2{%
+  \SKV@findescape{#1}{}{\SKV@err{Backslash required in '#1'}\@ehc}%
+  \SKV@ifstrempty{#2}{\SKV@err{Empty argument for dimension '#1'}\@ehc}{}%
+  \SKV@ifundef{#1}{%
+    \newdimen#1#1=\dimexpr#2\relax
+  }{%
+    #1=\dimexpr#2\relax
+  }%
+}
+\SKV@pdef*\SKV@dimnamedef#1{\SKV@aftercsname\SKV@dimdef{#1}}
+\SKV@pdef*\SKV@dimgdef#1#2{%
+  \SKV@findescape{#1}{}{\SKV@err{Backslash required in '#1'}\@ehc}%
+  \SKV@ifstrempty{#2}{\SKV@err{Empty argument for dimension '#1'}\@ehc}{}%
+  \SKV@ifundef{#1}{%
+    \newdimen#1\global#1=\dimexpr#2\relax
+  }{%
+    \global#1=\dimexpr#2\relax
+  }%
+}
+\SKV@pdef*\SKV@dimnamegdef#1{\SKV@aftercsname\SKV@dimgdef{#1}}
+\SKV@pdef*\define@compboolkeys{%
+  \let\SKV@def@boolkey\define@boolkey
+  \SKV@testopt{\SKV@compbool@opta}{KV}%
+}
+\SKV@pdef*\newcompboolkeys{%
+  \let\SKV@def@boolkey\newboolkey
+  \SKV@testopt{\SKV@compbool@opta}{KV}%
+}
+\SKV@def*\SKV@compbool@opta[#1]#2{%
+  \SKV@testopt{\SKV@define@compboolkeys[#1]{#2}}{mp@}}
+\SKV@def\SKV@define@compboolkeys[#1]#2[#3]#4[#5]#6#7#8{%
+  \SKV@namedef{#1@#2@#4@func}{%
+    #7\SKV@nameuse{if#3#4}\SKV@nameuse{#3#6false}\else
+      \SKV@nameuse{#3#6true}\fi}%
+  \SKV@namedef{#1@#2@#6@func}{%
+    #8\SKV@nameuse{if#3#6}\SKV@nameuse{#3#4false}\else
+      \SKV@nameuse{#3#4true}\fi}%
+  \begingroup\protected@edef\SKV@tempa{\endgroup
+    \unexpanded{%
+      \SKV@def@boolkey+[#1]{#2}[#3]{#4}[#5]{%
+          \SKV@nameuse{#1@#2@#4@func}%
+        }{%
+          \SKV@inputerr{##1}{#4}%
+        }%
+      \SKV@def@boolkey+[#1]{#2}[#3]{#6}[#5]{%
+          \SKV@nameuse{#1@#2@#6@func}%
+        }{%
+          \SKV@inputerr{##1}{#6}%
+        }%
+    }%
+  }%
+  \SKV@tempa
+}
+\SKV@def\SKV@star@or@long#1{%
+  \SKV@ifstar{%
+    \let\l@ngrel@x\relax
+    \def\SKV@star@or@none{*}#1%
+  }{%
+    \let\l@ngrel@x\long
+    \def\SKV@star@or@none{}#1%
+  }%
+}
+\SKV@pdef\requirecmd{\SKV@star@or@long\SKV@require@cmd}
+\SKV@def\SKV@require@cmd#1{%
+  \ifdefined#1%
+    \SKV@afterelsefi
+    \expandafter\CheckCommand\SKV@star@or@none
+  \else
+    \SKV@afterfi
+    \expandafter\newcommand\SKV@star@or@none
+  \fi
+  {#1}%
+}
+\def\@check@eq#1#2{%
+  \unless\ifx#1#2%
+    \SKV@warn{%
+      Previous definition of \string#1\MessageBreak
+      doesn't match your new definition.\MessageBreak
+      *** I haven't redefined \string#1\space ***
+    }%
+  \fi
+}
+\SKV@pdef*\SKV@undeftoggle@err#1{%
+  \SKV@err{Toggle '#1' undefined}%
+    {You need to first define '#1' before use.}%
+}
+\SKV@pdef*\deftog#1{%
+  \SKV@ifnamedef{SKV@toggle@#1}{%
+    \SKV@warn{Toggle '#1' redefined\on@line}%
+  }{}%
+  \nameletcs{SKV@toggle@#1}\@secondoftwo
+}
+\SKV@pdef*\newtog#1{%
+  \SKV@ifnamedef{SKV@toggle@#1}{%
+    \SKV@err{Toggle '#1' already defined}%
+      {Please provide a new toggle or redefine '#1'.}%
+  }{%
+    \nameletcs{SKV@toggle@#1}\@secondoftwo
+  }%
+}
+\SKV@pdef*\providetog#1{%
+  \SKV@ifnamedef{SKV@toggle@#1}{%
+    \SKV@info{Toggle '#1' already defined.\MessageBreak
+      Not redefined\on@line}%
+  }{%
+    \nameletcs{SKV@toggle@#1}\@secondoftwo
+  }%
+}
+\SKV@pdef*\requiretog#1{%
+  \SKV@aftercsname\requirecmd{SKV@toggle@#1}[2]{##2}%
+}
+\SKV@pdef*\settog#1#2{%
+  \SKV@ifnamedef{SKV@toggle@#1}{%
+    \SKV@ifnamedef{SKV@t@ggle#2}{%
+      \nameletname{SKV@toggle@#1}{SKV@t@ggle#2}%
+    }{%
+      \SKV@err{%
+        Inadmissible value '#2' for toggle '#1'
+      }{%
+        Valid values for toggles are 'true' and 'false'.
+      }%
+    }%
+  }{%
+    \SKV@undeftoggle@err{#1}%
+  }%
+}
+\SKV@pdef*\togtrue#1{%
+  \SKV@ifnamedef{SKV@toggle@#1}{%
+    \nameletcs{SKV@toggle@#1}\SKV@t@ggletrue
+  }{%
+    \SKV@undeftoggle@err{#1}%
+  }%
+}
+\SKV@pdef*\togfalse#1{%
+  \SKV@ifnamedef{SKV@toggle@#1}{%
+    \nameletcs{SKV@toggle@#1}\SKV@t@gglefalse
+  }{%
+    \SKV@undeftoggle@err{#1}%
+  }%
+}
+\SKV@newlet\SKV@t@ggletrue\@firstoftwo
+\SKV@newlet\SKV@t@gglefalse\@secondoftwo
+\SKV@pdef*\iftog#1{%
+  \SKV@ifnamedef{SKV@toggle@#1}{%
+    \@nameuse{SKV@toggle@#1}%
+  }{%
+    \SKV@undeftoggle@err{#1}%
+  }%
+}
+\SKV@pdef*\ifnottog#1{%
+  \SKV@ifnamedef{SKV@toggle@#1}{%
+    \@nameuse{SKV@toggle@#1}\@secondoftwo\@firstoftwo
+  }{%
+    \SKV@undeftoggle@err{#1}\@gobbletwo
+  }%
+}
+\SKV@pdef*\SKV@definedkey@err#1{%
+  \SKV@ifnamedef{\XKV@header#1}{%
+    \SKV@err{%
+      Key '#1' already defined in family '\XKV@tfam'
+    }{%
+      Use another key name for '#1'.
+    }%
+  }{}%
+}
+\SKV@pdef*\define@togkey{\XKV@t@stopta{\XKV@testoptd\SKV@define@togkey{}}}
+\SKV@def*\SKV@define@togkey#1#2[#3]{%
+  \SKV@reservedkey@err{#2}%
+  \SKV@suspendedkey@err{#2}%
+  \ifXKV@pl
+    \SKV@afterelsefi
+    \expandafter\SKV@d@f@ne@togkey
+  \else
+    \SKV@afterfi
+    \expandafter\SKV@d@fine@togkey
+  \fi
+  \csname\XKV@header#2\endcsname{#2}{#1#2}{#3}%
+}
+\SKV@def*\SKV@d@fine@togkey#1#2#3#4#5{%
+  \SKV@d@f@ne@t@gkey#1{#2}{#3}{#4}%
+  {{\settog{#3}{\XKV@resa}#5}}%
+}
+\SKV@def*\SKV@d@f@ne@togkey#1#2#3#4#5#6{%
+  \SKV@d@f@ne@t@gkey#1{#2}{#3}{#4}%
+    {{\settog{#3}{\XKV@resa}#5}{#6}}%
+}
+\SKV@def*\SKV@d@f@ne@t@gkey#1#2#3#4#5{%
+  \deftog{#3}%
+  \ifXKV@st\XKV@define@default{#2}{#4}\fi
+  \ifXKV@pl
+    \def#1##1{\XKV@pltrue\XKV@sttrue
+      \XKV@checkchoice[\XKV@resa]{##1}{true,false}#5%
+    }%
+  \else
+    \def#1##1{\XKV@plfalse\XKV@sttrue
+      \XKV@checkchoice[\XKV@resa]{##1}{true,false}#5%
+    }%
+  \fi
+}
+\SKV@pdef*\define@togkeys{%
+  \XKV@plfalse\XKV@testoptd\SKV@define@togkeys{}}
+\SKV@def*\SKV@define@togkeys#1#2[#3]{%
+  \XKV@sp@deflist\SKV@tempa{#2}%
+  \SKV@CommandGenParser{,}%
+  \SKV@for@b\SKV@tempa\SKV@tempa{%
+    \SKV@expandargs{3}\SKV@d@fine@togkeys{{\SKV@tempa}}{{#1}{#3}}\SKV@nil
+  }%
+}
+\SKV@def*\SKV@d@fine@togkeys#1#2#3{%
+  \SKV@aftercsname\SKV@d@f@ne@t@gkey{\XKV@header#1}%
+    {#1}{#2#1}{#3}{{\settog{#2#1}{\XKV@resa}}}%
+}
+\SKV@pdef*\newordkey{\XKV@testoptb\SKV@newordkey}
+\SKV@def*\SKV@newordkey#1{%
+  \SKV@definedkey@err{#1}%
+  \SKV@ifnextchar[{\XKV@d@fine@k@y{#1}}%
+    {\SKV@namedef{\XKV@header#1}####1}%
+}
+\SKV@pdef*\newcmdkey{\XKV@testoptd\SKV@newcmdkey{cmd}}
+\SKV@def*\SKV@newcmdkey#1#2[#3]#4{%
+  \SKV@definedkey@err{#2}%
+  \ifXKV@st\XKV@define@default{#2}{#3}\fi
+  \edef\SKV@tempa{\noexpand\def\@nameuse{\XKV@header#2}####1}%
+  \edef\SKV@tempb{\noexpand\def\@nameuse{#1#2}\unexpanded{{##1}#4}}%
+  \expandafter\SKV@tempa\expandafter{\SKV@tempb}%
+  \SKV@undef\SKV@tempa\SKV@undef\SKV@tempb
+}
+\SKV@pdef*\newcmdkeys{\XKV@testoptd\SKV@newcmdkeys{cmd}}
+\SKV@def*\SKV@newcmdkeys#1#2[#3]{%
+  \XKV@sp@deflist\SKV@tempa{#2}%
+  \SKV@CommandGenParser{,}%
+  \SKV@for@b\SKV@tempa\SKV@tempa{%
+    \edef\SKV@tempa{\noexpand\SKV@newcmdkey{#1}{\SKV@tempa}}%
+    \SKV@tempa[#3]{}%
+  }%
+}
+\SKV@pdef*\newchoicekey{\XKV@testopta{\XKV@testoptb\SKV@newchoicekey}}
+\SKV@def*\SKV@newchoicekey#1{%
+  \SKV@definedkey@err{#1}%
+  \@testopt{\XKV@d@fine@choicekey{#1}}{}%
+}
+\SKV@pdef*\newboolkey{\XKV@t@stopta{\XKV@testoptd\SKV@newboolkey{}}}
+\SKV@def*\SKV@newboolkey#1#2[#3]{%
+  \SKV@definedkey@err{#2}%
+  \ifXKV@pl
+    \SKV@afterelsefi
+    \expandafter\XKV@d@f@ne@boolkey
+  \else
+    \SKV@afterfi
+    \expandafter\XKV@d@fine@boolkey
+  \fi
+  \csname\XKV@header#2\endcsname{#2}{#1#2}{#3}%
+}
+\SKV@pdef*\newboolkeys{\XKV@plfalse\XKV@testoptd\SKV@newboolkeys{}}
+\SKV@def*\SKV@newboolkeys#1#2[#3]{%
+  \XKV@sp@deflist\SKV@tempa{#2}%
+  \SKV@CommandGenParser{,}%
+  \SKV@for@b\SKV@tempa\SKV@tempa{%
+    \SKV@definedkey@err\SKV@tempa
+    \SKV@expandargs{3}\XKV@d@fine@boolkeys{{\SKV@tempa}}{{#1}{#3}}\SKV@nil
+  }%
+}
+\SKV@pdef*\newtogkey{\XKV@t@stopta{\XKV@testoptd\SKV@newtogkey{}}}
+\SKV@def*\SKV@newtogkey#1#2[#3]{%
+  \SKV@definedkey@err{#2}%
+  \ifXKV@pl
+    \SKV@afterelsefi
+    \expandafter\SKV@d@f@ne@togkey
+  \else
+    \SKV@afterfi
+    \expandafter\SKV@d@fine@togkey
+  \fi
+  \csname\XKV@header#2\endcsname{#2}{#1#2}{#3}%
+}
+\SKV@pdef*\newtogkeys{\XKV@plfalse\XKV@testoptd\SKV@newtogkeys{}}
+\SKV@def*\SKV@newtogkeys#1#2[#3]{%
+  \XKV@sp@deflist\SKV@tempa{#2}%
+  \SKV@CommandGenParser{,}%
+  \SKV@for@b\SKV@tempa\SKV@tempa{%
+    \SKV@definedkey@err\SKV@tempa
+    \SKV@expandargs{3}\SKV@d@fine@togkeys{{\SKV@tempa}}{{#1}{#3}}\SKV@nil
+  }%
+}
+\SKV@pdef*\define@comptogkeys{%
+  \let\SKV@def@togkey\define@togkey
+  \SKV@testopt{\SKV@comptog@opta}{KV}%
+}
+\SKV@pdef*\newcomptogkeys{%
+  \let\SKV@def@togkey\newtogkey
+  \SKV@testopt{\SKV@comptog@opta}{KV}%
+}
+\SKV@def*\SKV@comptog@opta[#1]#2{%
+  \SKV@testopt{\SKV@define@comptogkeys[#1]{#2}}{mp@}}
+\SKV@def\SKV@define@comptogkeys[#1]#2[#3]#4[#5]#6#7#8{%
+  \SKV@namedef{#1@#2@#4@func}{%
+    #7\iftog{#3#4}{\togfalse{#3#6}}{\togtrue{#3#6}}}%
+  \SKV@namedef{#1@#2@#6@func}{%
+    #8\iftog{#3#6}{\togfalse{#3#4}}{\togtrue{#3#4}}}%
+  \begingroup\protected@edef\SKV@tempa{\endgroup
+    \unexpanded{%
+      \SKV@def@togkey+[#1]{#2}[#3]{#4}[#5]{%
+        \SKV@nameuse{#1@#2@#4@func}%
+      }{%
+        \SKV@inputerr{##1}{#4}%
+      }%
+      \SKV@def@togkey+[#1]{#2}[#3]{#6}[#5]{%
+        \SKV@nameuse{#1@#2@#6@func}%
+      }{%
+        \SKV@inputerr{##1}{#6}%
+      }%
+    }%
+  }%
+  \SKV@tempa
+}
+\SKV@pdef*\stopread#1\SKV@nil{\long\edef\SKV@remainder{\unexpanded{#1}}}
+\def\SKV@noa{\z@}\def\SKV@nob{\z@}\def\SKV@noc{\z@}
+\SKV@pdef*\define@keylist{%
+  \let\SKV@def@key\define@key
+  \let\SKV@def@cmdkey\define@cmdkey
+  \let\SKV@def@boolkey\define@boolkey
+  \let\SKV@def@togkey\define@togkey
+  \let\SKV@def@choicekey\define@choicekey
+  \SKV@ifstar{\XKV@sttrue\SKV@define@keylist}%
+    {\XKV@stfalse\SKV@define@keylist}%
+}
+\SKV@pdef*\newkeylist{%
+  \let\SKV@def@key\newordkey
+  \let\SKV@def@cmdkey\newcmdkey
+  \let\SKV@def@boolkey\newboolkey
+  \let\SKV@def@togkey\newtogkey
+  \let\SKV@def@choicekey\newchoicekey
+  \SKV@ifstar{\XKV@sttrue\SKV@define@keylist}%
+    {\XKV@stfalse\SKV@define@keylist}%
+}
+\SKV@def\ChoiceKeyValues#1#2{%
+  \ifSKV@xchoicelist
+    \SKV@nameedef{\SKV@keyprefix @\SKV@keyfamily @#1@altlist}{#2}%
+  \else
+    \SKV@ifnameundef{\SKV@keyprefix @\SKV@keyfamily @#1@altlist}{%
+      \SKV@newnameedef{\SKV@keyprefix @\SKV@keyfamily @#1@altlist}{#2}%
+    }{%
+      \SKV@err{%
+        You have attempted to set two \MessageBreak
+        \string\ChoiceKeyValues\space for the choice\MessageBreak
+        key '#1' in the same family '\SKV@keyfamily'
+      }{%
+        You can only do that if you set 'xchoicelist'=true.
+      }%
+    }%
+  \fi
+}
+\SKV@newlet\CKVS\ChoiceKeyValues
+\SKV@def*\SKV@detok@z@p#1{%
+  \edef#1{\expandafter\detokenize\expandafter{#1}\space}%
+  \edef#1{\expandafter\zap@space#1\@empty}%
+}
+\SKV@def*\SKV@detok@zsp#1{%
+  \begingroup
+  \def\SKV@no{\z@}%
+  \SKV@CommandGenParser{,}%
+  \SKV@for@b#1\SKV@tempa{%
+    \edef\SKV@no{\the\numexpr\SKV@no+\@ne}%
+    \edef\SKV@tempa{\expandafter\detokenize\expandafter{\SKV@tempa}\space}%
+    \edef\SKV@tempa{\expandafter\zap@space\SKV@tempa\@empty}%
+    \SKV@namexdef{SKV@zsp\SKV@no}{\SKV@expandox{\SKV@tempa}}%
+  }%
+  \endgroup
+}
+\SKV@def*\SKV@detok@dsp#1{%
+  \begingroup
+  \def\SKV@no{\z@}%
+  \SKV@CommandGenParser{,}%
+  \SKV@for@b#1\SKV@tempa{%
+    \edef\SKV@no{\the\numexpr\SKV@no+\@ne}%
+    \edef\SKV@tempa{\expandafter\detokenize\expandafter{\SKV@tempa}}%
+    \SKV@expandargs{1}\KV@@sp@def\SKV@tempa\SKV@tempa\SKV@nil
+    \SKV@namexdef{SKV@dsp\SKV@no}{\SKV@expandox{\SKV@tempa}}%
+  }%
+  \endgroup
+}
+\SKV@def*\SKV@if@err{%
+  \SKV@err{You can't use '\protect\if' and '\protect\fi' in key macro}%
+    {Use '\protect\fif' and '\protect\ffi' instead.}%
+}
+\SKV@def\SKV@define@mult@keys#1,#2,#3,#4\SKV@nil{%
+  \begingroup
+  \SKV@ifblank{#4}{}{%
+    \def\SKV@tempa{\if,\fi,\fif}%
+    \SKV@detok@dsp\SKV@tempa
+    \def\SKV@tempb{#4}\SKV@detok@z@p\SKV@tempb
+    \@expandtwoargs\in@{\@nameuse{SKV@dsp1}}\SKV@tempb
+    \ifin@\SKV@afterfi\SKV@if@err\fi
+    \@expandtwoargs\in@{\@nameuse{SKV@dsp3}}\SKV@tempb
+    \ifin@
+      \SKV@afterelsefi
+      \SKV@namegdef{\SKV@keyprefix @\SKV@keyfamily @#2@func}{#4}%
+    \else
+      \SKV@afterfi
+      \SKV@namexdef{\SKV@keyprefix @\SKV@keyfamily @#2@func}{\SKV@expandox{#4}}%
+    \fi
+  }%
+  \protected@edef\SKV@tempa{\endgroup
+    \ifcase#1\relax
+      \def\SKV@noc{\@ne}%
+    \or
+      \noexpand\SKV@def@key[\SKV@keyprefix]{\SKV@keyfamily}%
+        {#2}[#3]{%
+          \noexpand\SKV@nameuse{\SKV@keyprefix @\SKV@keyfamily @#2@func}%
+        }%
+    \or
+      \noexpand\SKV@def@cmdkey[\SKV@keyprefix]{\SKV@keyfamily}%
+        [\SKV@macroprefix]{#2}[#3]{%
+          \noexpand\SKV@nameuse{\SKV@keyprefix @\SKV@keyfamily @#2@func}%
+        }%
+    \or
+      \noexpand\SKV@def@boolkey+[\SKV@keyprefix]{\SKV@keyfamily}%
+        [\SKV@macroprefix]{#2}[#3]{%
+          \noexpand\SKV@nameuse{\SKV@keyprefix @\SKV@keyfamily @#2@func}%
+        }{%
+          \unexpanded{\SKV@inputerr{##1}{#2}}%
+        }%
+    \or
+      \noexpand\SKV@def@togkey+[\SKV@keyprefix]{\SKV@keyfamily}%
+        [\SKV@macroprefix]{#2}[#3]{%
+          \noexpand\SKV@nameuse{\SKV@keyprefix @\SKV@keyfamily @#2@func}%
+        }{%
+          \unexpanded{\SKV@inputerr{##1}{#2}}%
+        }%
+    \or
+      \SKV@ifnameundef{\SKV@keyprefix @\SKV@keyfamily @#2@altlist}{%
+        \def\SKV@noa{\@ne}%
+      }{}%
+      \noexpand\SKV@def@choicekey*+[\SKV@keyprefix]{\SKV@keyfamily}{#2}%
+        [\unexpanded{\val\nr}]{%
+          \SKV@nameuse{\SKV@keyprefix @\SKV@keyfamily @#2@altlist}%
+        }[#3]{%
+          \noexpand\SKV@nameuse{\SKV@keyprefix @\SKV@keyfamily @#2@func}%
+        }{%
+          \unexpanded{\SKV@inputerr{##1}{#2}}%
+        }%
+    \else
+      \def\SKV@noc{\@ne}%
+    \fi
+  }%
+  \SKV@tempa
+  \ifnum\SKV@noa=\@ne
+    \SKV@afterfi
+      \SKV@err{%
+        Choice key '#2' can't be defined.\MessageBreak
+        Alternate key values list for '#2' is empty
+      }{%
+        You need to first define admissible\MessageBreak
+        key values through '\string\ChoiceKeyValues'\MessageBreak
+        for choice key '#2'.
+      }%
+  \fi
+  \ifnum\SKV@noc=\@ne
+    \SKV@afterfi
+      \SKV@err{Unknown key type/identifier '#1'}%
+        {You can only use key types 1 to 5.}%
+  \fi
+}
+\SKV@pdef*\in@tog#1#2{%
+  \def\in@@##1#1##2##3\in@@{%
+    \ifx\in@##2\togfalse{in@}\else\togtrue{in@}\fi
+  }%
+  \in@@#2#1\in@\in@@
+}
+\newtog{in@}
+\SKV@pdef*\in@tok#1#2{%
+  \begingroup
+  \edef\SKV@tempa{\detokenize{#1}}%
+  \edef\SKV@tempb{\detokenize{#2}}%
+  \SKV@expandargs{1}\KV@@sp@def\SKV@tempa\SKV@tempa\SKV@nil
+  \SKV@expandargs{1}\KV@@sp@def\SKV@tempb\SKV@tempb\SKV@nil
+  \SKV@expandargs{3}{\def\in@@##1}\SKV@tempa{%
+    ##2##3\in@@{\global\ifx\in@##2\in@false\else\in@true\fi}%
+  }\SKV@nil
+  \SKV@expandargs{3}\in@@{\SKV@tempb\SKV@tempa}{\in@\in@@}\SKV@nil
+  \endgroup
+}
+\def\XKV@makepf#1{%
+  \KV@@sp@def\XKV@prefix{#1}%
+  \SKV@expandargs{3}\XKV@checksanitizeb{{\SKV@rkpnames}}\SKV@tempa\SKV@nil
+  \SKV@expandargs{1}\XKV@sp@deflist\SKV@tempa\SKV@tempa\SKV@nil
+  \XKV@knftrue
+  \XKV@whilist\SKV@tempa\SKV@tempa\ifXKV@knf\fi{%
+    \ifx\XKV@prefix\SKV@tempa\XKV@knffalse\fi
+  }%
+  \unless\ifXKV@knf
+    \SKV@afterfi
+    \SKV@err{Prefix '\SKV@tempa' is not allowed}%
+      {Use another prefix instead of '\SKV@tempa'}%
+  \fi
+  \edef\SKV@pref{\ifx\XKV@prefix\@empty\else\XKV@prefix\fi}%
+  \edef\XKV@prefix{\ifx\XKV@prefix\@empty\else\XKV@prefix @\fi}%
+}
+\def\XKV@makehd#1{%
+  \SKV@expandargs{1}\KV@@sp@def\XKV@header{#1}\SKV@nil
+  \SKV@expandargs{3}\XKV@checksanitizeb{{\SKV@rfnames}}\SKV@tempa\SKV@nil
+  \SKV@expandargs{1}\XKV@sp@deflist\SKV@tempa\SKV@tempa\SKV@nil
+  \XKV@knftrue
+  \XKV@whilist\SKV@tempa\SKV@tempa\ifXKV@knf\fi{%
+    \ifx\XKV@header\SKV@tempa\XKV@knffalse\fi
+  }%
+  \unless\ifXKV@knf
+    \SKV@afterfi
+    \SKV@err{Family '\SKV@tempa' is not allowed}%
+      {Use another family instead of '\SKV@tempa'}%
+  \fi
+  \edef\XKV@header{%
+    \XKV@prefix\ifx\XKV@header\@empty\else\XKV@header @\fi}%
+}
+\def\XKV@define@key#1{%
+  \SKV@reservedkey@err{#1}%
+  \SKV@suspendedkey@err{#1}%
+  \SKV@ifnextchar[{\XKV@d@fine@k@y{#1}}{\SKV@d@fine@k@y{#1}}%
+}
+\def\XKV@d@fine@k@y#1[#2]#3{%!
+  \XKV@define@default{#1}{#2}%
+  \SKV@namedef{\XKV@header#1}##1{#3}%
+}
+\def\SKV@d@fine@k@y#1#2{\SKV@namedef{\XKV@header#1}##1{#2}}
+\def\XKV@define@cmdkey#1#2[#3]#4{%
+  \SKV@reservedkey@err{#2}%
+  \SKV@suspendedkey@err{#2}%
+  \ifXKV@st\XKV@define@default{#2}{#3}\fi
+  \edef\SKV@tempa{\noexpand\def\@nameuse{\XKV@header#2}####1}%
+  \edef\SKV@tempb{\noexpand\def\@nameuse{#1#2}\unexpanded{{##1}#4}}%
+  \expandafter\SKV@tempa\expandafter{\SKV@tempb}%
+  \SKV@undef\SKV@tempa\SKV@undef\SKV@tempb
+}
+\def\XKV@define@choicekey#1{%
+  \SKV@reservedkey@err{#1}%
+  \SKV@suspendedkey@err{#1}%
+  \@testopt{\XKV@d@fine@choicekey{#1}}{}%
+}
+\def\XKV@define@boolkey#1#2[#3]{%
+  \SKV@reservedkey@err{#2}%
+  \SKV@suspendedkey@err{#2}%
+  \ifXKV@pl
+    \SKV@afterelsefi\expandafter\XKV@d@f@ne@boolkey
+  \else
+    \SKV@afterfi\expandafter\XKV@d@fine@boolkey
+  \fi
+  \csname\XKV@header#2\endcsname{#2}{#1#2}{#3}%
+}
+\SKV@pdef*\reserve@keys{\@testopt\SKV@reserve@keys{KV}}
+\SKV@def*\SKV@reserve@keys[#1]#2#3{%
+  \XKV@checksanitizeb{#1}\SKV@tempa
+  \SKV@expandargs{1}\XKV@sp@deflist\SKV@tempa\SKV@tempa\SKV@nil
+  \SKV@CommandGenParser{,}%
+  \SKV@for@b\SKV@tempa\SKV@tempa{%
+    \expandafter\SKV@res@rve@keys\expandafter{\SKV@tempa}{#2}{#3}%
+  }%
+}
+\SKV@def*\SKV@res@rve@keys#1#2#3{%
+  \XKV@makepf{#1}%
+  \XKV@checksanitizeb{#2}\XKV@fams
+  \SKV@expandargs{1}\XKV@sp@deflist\XKV@fams\XKV@fams\SKV@nil
+  \SKV@for@b\XKV@fams\XKV@tfam{%
+    \XKV@makehd\XKV@tfam
+    \SKV@res@rve@k@ys{#3}%
+  }%
+}
+\SKV@def*\SKV@res@rve@k@ys#1{%
+  \XKV@checksanitizeb{#1}\SKV@tempa
+  \SKV@expandargs{1}\XKV@sp@deflist\SKV@tempa\SKV@tempa\SKV@nil
+  \SKV@for@b\SKV@tempa\SKV@tempa{%
+    \SKV@ifnamedef{\XKV@header\SKV@tempa}{%
+      \SKV@err{%
+        Key '\SKV@tempa' with prefix '\SKV@pref' in family
+        \MessageBreak '\XKV@tfam' is already defined
+      }{%
+        Key '\SKV@tempa' in family '\XKV@tfam' can't be reserved.
+        \MessageBreak You may wish to remove it before reserving it.
+        \MessageBreak In that case, you can use '\string\remove@keys'.
+      }%
+    }{%
+      \SKV@nameedef{\XKV@header\SKV@tempa}{%
+        \SKV@err{%
+          Key '\SKV@tempa' with prefix '\SKV@pref' in family '\XKV@tfam'
+          \MessageBreak was reserved\on@line
+        }{%
+          Unreserve '\SKV@tempa' before use.
+        }%
+      }%
+      \SKV@namedef{\XKV@header\SKV@tempa @reser}{}%
+    }%
+  }%
+}
+\let\SKV@no\@empty
+\SKV@pdef\SKV@aftergroup{%
+  \SKV@ifstar{\SKV@aft@rgroup\@firstofone}{\SKV@aft@rgroup\unexpanded}%
+}
+\SKV@def\SKV@aft@rgroup#1#2{%
+  \edef\SKV@no{\the\numexpr\SKV@no+1}%
+  \SKV@namexdef{SKV@aft@rgr@up\SKV@no}{%
+    \SKV@namegundef{SKV@aft@rgr@up\SKV@no}%
+    #1{#2}%
+  }%
+  \SKV@aftercsname\aftergroup{SKV@aft@rgr@up\SKV@no}%
+}
+\SKV@pdef\SKV@afterassignment{%
+  \SKV@ifstar{\SKV@aft@rassignment\@firstofone}%
+    {\SKV@aft@rassignment\unexpanded}%
+}
+\SKV@def\SKV@aft@rassignment#1#2{%
+  \begingroup
+  \edef\SKV@no{\the\numexpr\SKV@no+1}%
+  \SKV@namexdef{SKV@aft@rassignm@nt\SKV@no}{%
+    \SKV@namegundef{SKV@aft@rassignm@nt\SKV@no}%
+    #1{#2}%
+  }%
+  \expandafter\endgroup\expandafter\afterassignment
+    \csname SKV@aft@rassignm@nt\SKV@no\endcsname
+}
+\SKV@def*\SKV@reservedkey@err#1{%
+  \SKV@ifnamedef{\XKV@header#1@reser}{%
+    \let\next\SKV@err
+  }{%
+    \let\next\@gobbletwo
+  }%
+  \next{%
+    Key '#1' with prefix '\SKV@pref'\MessageBreak
+    is reserved in family '\XKV@tfam'
+  }{%
+    Unreserve '#1' before use.
+  }%
+}
+\SKV@def*\ifkeyreserved{\@testopt\SKV@ifkeyreserved{KV}}
+\SKV@def*\SKV@ifkeyreserved[#1]#2#3{%
+  \XKV@checksanitizeb{#1}\SKV@tempa
+  \SKV@expandargs{1}\XKV@sp@deflist\SKV@tempa\SKV@tempa\SKV@nil
+  \XKV@knftrue
+  \SKV@CommandGenParser{,}%
+  \SKV@for@b\SKV@tempa\SKV@tempa{%
+    \expandafter\SKV@ifkey@reserved\expandafter{\SKV@tempa}{#2}{#3}%
+  }%
+  \ifXKV@knf
+    \expandafter\@secondoftwo
+  \else
+    \expandafter\@firstoftwo
+  \fi
+}
+\SKV@def*\SKV@ifkey@reserved#1#2#3{%
+  \XKV@makepf{#1}%
+  \XKV@checksanitizeb{#2}\XKV@fams
+  \SKV@expandargs{1}\XKV@sp@deflist\XKV@fams\XKV@fams\SKV@nil
+  \KV@@sp@def\XKV@tkey{#3}%
+  \XKV@whilist\XKV@fams\XKV@tfam\ifXKV@knf\fi{%
+    \XKV@makehd\XKV@tfam
+    \SKV@ifnamedef{\XKV@header\XKV@tkey @reser}{\XKV@knffalse}{}%
+  }%
+}
+\SKV@def*\ifkeysuspended{\@testopt\SKV@ifkeysuspended{KV}}
+\SKV@def*\SKV@ifkeysuspended[#1]#2#3{%
+  \XKV@checksanitizeb{#1}\SKV@tempa
+  \SKV@expandargs{1}\XKV@sp@deflist\SKV@tempa\SKV@tempa\SKV@nil
+  \XKV@knftrue
+  \SKV@CommandGenParser{,}%
+  \SKV@for@b\SKV@tempa\SKV@tempa{%
+    \expandafter\SKV@ifkey@suspended\expandafter{\SKV@tempa}{#2}{#3}%
+  }%
+  \ifXKV@knf
+    \expandafter\@secondoftwo
+  \else
+    \expandafter\@firstoftwo
+  \fi
+}
+\SKV@def*\SKV@ifkey@suspended#1#2#3{%
+  \XKV@makepf{#1}%
+  \XKV@checksanitizeb{#2}\XKV@fams
+  \SKV@expandargs{1}\XKV@sp@deflist\XKV@fams\XKV@fams\SKV@nil
+  \KV@@sp@def\XKV@tkey{#3}%
+  \XKV@whilist\XKV@fams\XKV@tfam\ifXKV@knf\fi{%
+    \XKV@makehd\XKV@tfam
+    \SKV@ifnamedef{\XKV@header\XKV@tkey @sus}{\XKV@knffalse}{}%
+  }%
+}
+\SKV@def*\ifkeydefined{\@testopt\SKV@ifkeydefined{KV}}
+\SKV@def*\SKV@ifkeydefined[#1]#2#3{%
+  \XKV@checksanitizeb{#1}\SKV@tempa
+  \SKV@expandargs{1}\XKV@sp@deflist\SKV@tempa\SKV@tempa\SKV@nil
+  \XKV@knftrue
+  \SKV@CommandGenParser{,}%
+  \SKV@for@b\SKV@tempa\SKV@tempa{%
+    \expandafter\SKV@ifk@ydefined\expandafter{\SKV@tempa}{#2}{#3}%
+  }%
+  \ifXKV@knf
+    \expandafter\@secondoftwo
+  \else
+    \expandafter\@firstoftwo
+  \fi
+}
+\SKV@def*\SKV@ifk@ydefined#1#2#3{%
+  \XKV@makepf{#1}%
+  \XKV@checksanitizeb{#2}\XKV@fams
+  \SKV@expandargs{1}\XKV@sp@deflist\XKV@fams\XKV@fams\SKV@nil
+  \KV@@sp@def\XKV@tkey{#3}%
+  \XKV@whilist\XKV@fams\XKV@tfam\ifXKV@knf\fi{%
+    \XKV@makehd\XKV@tfam
+    \SKV@ifnamedef{\XKV@header\XKV@tkey}{\XKV@knffalse}{}%
+  }%
+}
+\SKV@def*\SKV@disabledkey@err{%
+  \SKV@err{%
+    Key '\SKV@disabledkey' with prefix '\SKV@pref' in family
+    \MessageBreak '\XKV@tfam' was disabled\on@line
+  }{%
+    You can't set or reset '\SKV@disabledkey' at this\MessageBreak
+    late stage. Perhaps you're required to set it \MessageBreak
+    earlier, in the document's preamble.
+  }%
+}
+\protected\def\disable@keys{%
+  \SKV@ifstar{\@testopt\XKV@disable@keys{KV}}%
+    {\@testopt\SKV@disable@keys{KV}}%
+}
+\SKV@def*\SKV@disable@keys[#1]#2#3{%
+  \XKV@checksanitizeb{#1}\SKV@tempa
+  \SKV@expandargs{1}\XKV@sp@deflist\SKV@tempa\SKV@tempa\SKV@nil
+  \SKV@CommandGenParser{,}%
+  \SKV@for@b\SKV@tempa\SKV@tempa{%
+    \expandafter\SKV@dis@ble@keys\expandafter{\SKV@tempa}{#2}{#3}%
+  }%
+}
+\SKV@def*\SKV@dis@ble@keys#1#2#3{%
+  \XKV@makepf{#1}%
+  \XKV@checksanitizeb{#2}\XKV@fams
+  \SKV@expandargs{1}\XKV@sp@deflist\XKV@fams\XKV@fams\SKV@nil
+  \SKV@for@b\XKV@fams\XKV@tfam{%
+    \XKV@makehd\XKV@tfam
+    \SKV@dis@ble@k@ys{#3}%
+  }%
+}
+\SKV@def*\SKV@dis@ble@k@ys#1{%
+  \XKV@checksanitizeb{#1}\SKV@tempa
+  \SKV@expandargs{1}\XKV@sp@deflist\SKV@tempa\SKV@tempa\SKV@nil
+  \SKV@for@b\SKV@tempa\SKV@tempa{%
+    \SKV@ifnameundef{\XKV@header\SKV@tempa}{%
+      \SKV@warn{Key '\SKV@tempa' with prefix '\SKV@pref'
+        \MessageBreak is undefined in family '\XKV@tfam':
+        \MessageBreak can't be disabled\on@line}%
+    }{%
+      \SKV@dis@ble@k@y@\SKV@tempa
+    }%
+  }%
+}
+\SKV@def*\SKV@dis@ble@k@y@#1{%
+  \edef\SKV@disabledkey{#1}%
+  \SKV@ifnameundef{\XKV@header#1@default}{%
+    \edef#1{\noexpand\XKV@define@key{#1}}%
+  }{%
+    \edef#1{\noexpand\XKV@define@key{#1}[]}%
+  }%
+  \SKV@expandargs{0}#1\SKV@disabledkey@err\SKV@nil
+  \SKV@info{Key '\SKV@disabledkey' with prefix '\SKV@pref' in family '\XKV@tfam'
+    \MessageBreak was disabled\on@line}%
+}
+\SKV@def*\SKV@suspendedkey@err#1{%
+  \SKV@ifnamedef{\XKV@header#1@sus}{%
+    \SKV@err{%
+      Key '#1' was suspended from family '\XKV@tfam'
+    }{%
+      You can use \string\restore@key\space to restore '#1'.
+    }%
+  }{}%
+}
+\SKV@def*\SKV@suspendedkey@e@r{%
+  \SKV@err{%
+    Key '\SKV@suspendedkey' in family '\XKV@tfam' was
+    \MessageBreak suspended\on@line
+  }{%
+    You can use \string\restore@key\space to restore '\SKV@suspendedkey'.
+  }%
+}
+\SKV@pdef*\suspend@keys{\@testopt\SKV@suspend@keys{KV}}
+\SKV@def*\SKV@suspend@keys[#1]#2#3{%
+  \XKV@checksanitizeb{#1}\SKV@tempa
+  \SKV@expandargs{1}\XKV@sp@deflist\SKV@tempa\SKV@tempa\SKV@nil
+  \SKV@CommandGenParser{,}%
+  \SKV@for@b\SKV@tempa\SKV@tempa{%
+    \expandafter\SKV@s@spend@keys\expandafter{\SKV@tempa}{#2}{#3}%
+  }%
+}
+\SKV@def*\SKV@s@spend@keys#1#2#3{%
+  \XKV@makepf{#1}%
+  \XKV@checksanitizeb{#2}\XKV@fams
+  \SKV@expandargs{1}\XKV@sp@deflist\XKV@fams\XKV@fams\SKV@nil
+  \SKV@for@b\XKV@fams\XKV@tfam{%
+    \XKV@makehd\XKV@tfam
+    \SKV@s@sp@nd@keys{#3}%
+  }%
+}
+\SKV@def*\SKV@s@sp@nd@keys#1{%
+  \XKV@checksanitizeb{#1}\SKV@tempa
+  \SKV@expandargs{1}\XKV@sp@deflist\SKV@tempa\SKV@tempa\SKV@nil
+  \SKV@for@b\SKV@tempa\SKV@tempa{%
+    \SKV@ifnameundef{\XKV@header\SKV@tempa}{%
+      \SKV@warn{Key '\SKV@tempa' with prefix '\SKV@pref'
+        \MessageBreak is undefined in family '\XKV@tfam':
+        \MessageBreak can't be suspended\on@line}%
+    }{%
+      \SKV@s@sp@nd@k@ys\SKV@tempa
+    }%
+  }%
+}
+\SKV@def*\SKV@s@sp@nd@k@ys#1{%
+  \SKV@ifnamedef{\XKV@header#1@sus}{%
+    \SKV@err{%
+      Key '#1' with prefix '\SKV@pref' was suspended from family '\XKV@tfam'
+    }{%
+      You can use \string\restore@key\space to restore '#1'.
+    }%
+  }{%
+    \edef\SKV@suspendedkey{#1}%
+    \global\nameletname{\XKV@header#1@sus}{\XKV@header#1}%
+    \SKV@nameedef{\XKV@header#1}{\SKV@suspendedkey@e@r}%
+    \SKV@info{Key '\SKV@suspendedkey' with prefix '\SKV@pref' in
+      \MessageBreak family '\XKV@tfam' was suspended\on@line}%
+  }%
+}
+\SKV@pdef*\restore@keys{\@testopt\SKV@restore@keys{KV}}
+\SKV@def*\SKV@restore@keys[#1]#2#3{%
+  \XKV@checksanitizeb{#1}\SKV@tempa
+  \SKV@expandargs{1}\XKV@sp@deflist\SKV@tempa\SKV@tempa\SKV@nil
+  \SKV@CommandGenParser{,}%
+  \SKV@for@b\SKV@tempa\SKV@tempa{%
+    \expandafter\SKV@r@store@keys\expandafter{\SKV@tempa}{#2}{#3}%
+  }%
+}
+\SKV@def*\SKV@r@store@keys#1#2#3{%
+  \XKV@makepf{#1}%
+  \XKV@checksanitizeb{#2}\XKV@fams
+  \SKV@expandargs{1}\XKV@sp@deflist\XKV@fams\XKV@fams\SKV@nil
+  \SKV@for@b\XKV@fams\XKV@tfam{%
+    \XKV@makehd\XKV@tfam
+    \SKV@r@st@re@keys{#3}%
+  }%
+}
+\SKV@def*\SKV@r@st@re@keys#1{%
+  \XKV@checksanitizeb{#1}\SKV@tempa
+  \SKV@expandargs{1}\XKV@sp@deflist\SKV@tempa\SKV@tempa\SKV@nil
+  \SKV@for@b\SKV@tempa\SKV@tempa{%
+    \SKV@ifnameundef{\XKV@header\SKV@tempa}{%
+      \SKV@warn{Key '\SKV@tempa' with prefix '\SKV@pref'
+        \MessageBreak is undefined in family '\XKV@tfam':
+        \MessageBreak can't be restored\on@line}%
+    }{%
+      \SKV@r@st@re@k@ys\SKV@tempa
+    }%
+  }%
+}
+\SKV@def*\SKV@r@st@re@k@ys#1{%
+  \SKV@ifnameundef{\XKV@header#1@sus}{%
+    \SKV@err{Key '#1' wasn't suspended from family
+      \MessageBreak '\XKV@tfam': can't be restored\on@line}\@ehc
+  }{%
+    \edef\SKV@restoredkey{#1}%
+    \nameletname{\XKV@header#1}{\XKV@header#1@sus}%
+    \SKV@nameundef{\XKV@header#1@sus}%
+    \SKV@info{Key '\SKV@restoredkey' with prefix '\SKV@pref' in family
+      \MessageBreak '\XKV@tfam' restored\on@line}%
+  }%
+}
+\SKV@pdef*\remove@keys{\@testopt\SKV@remove@keys{KV}}
+\SKV@def*\SKV@remove@keys[#1]#2#3{%
+  \XKV@checksanitizeb{#1}\SKV@tempa
+  \SKV@expandargs{1}\XKV@sp@deflist\SKV@tempa\SKV@tempa\SKV@nil
+  \SKV@CommandGenParser{,}%
+  \SKV@for@b\SKV@tempa\SKV@tempa{%
+    \expandafter\SKV@r@move@keys\expandafter{\SKV@tempa}{#2}{#3}%
+  }%
+}
+\SKV@def*\SKV@r@move@keys#1#2#3{%
+  \XKV@makepf{#1}%
+  \XKV@checksanitizeb{#2}\XKV@fams
+  \SKV@expandargs{1}\XKV@sp@deflist\XKV@fams\XKV@fams\SKV@nil
+  \SKV@for@b\XKV@fams\XKV@tfam{%
+    \XKV@makehd\XKV@tfam
+    \SKV@r@m@ve@keys{#3}%
+  }%
+}
+\SKV@def*\SKV@r@m@ve@keys#1{%
+  \XKV@checksanitizeb{#1}\SKV@tempa
+  \SKV@expandargs{1}\XKV@sp@deflist\SKV@tempa\SKV@tempa\SKV@nil
+  \SKV@for@b\SKV@tempa\SKV@tempa{%
+    \SKV@ifnameundef{\XKV@header\SKV@tempa}{%
+      \SKV@warn{Key '\SKV@tempa' with prefix '\SKV@pref'
+        \MessageBreak is undefined in family '\XKV@tfam':
+        \MessageBreak I can't remove or unreserve it\on@line}%
+    }{%
+      \SKV@r@m@ve@k@ys\SKV@tempa
+    }%
+  }%
+}
+\SKV@def*\SKV@r@m@ve@k@ys#1{%
+  \begingroup
+  \edef\SKV@tempa{\XKV@header#1,\XKV@header#1@default,
+    \XKV@header#1@func,%\XKV@header#1@value,
+    \XKV@header#1@altlist,\XKV@header#1@reser
+  }%
+  \SKV@for@b\SKV@tempa\SKV@tempa{%
+    \SKV@expandargs{1}\KV@@sp@def\SKV@tempa\SKV@tempa\SKV@nil
+    \SKV@namegundef{\SKV@tempa}%
+  }%
+  \endgroup
+  \SKV@info{Key '#1' with prefix '\SKV@pref' in family '\XKV@tfam'
+    \MessageBreak was removed\on@line}%
+}
+\SKV@newlet\unreserve@keys\remove@keys
+\def\setkeys{%
+  \def\fif##1{%
+    \SKV@findescape{##1}{%
+      \SKV@err{Bad argument '\string##1'}%
+        {Backslash in '\string##1' not allowed.}%
+    }{}%
+    \csname if##1\endcsname
+  }%
+  \let\ffi\fi
+  \XKV@testopta{\XKV@testoptc\XKV@setkeys}%
+}
+\def\XKV@setkeys[#1]#2{%
+  \XKV@checksanitizea{#2}\XKV@resb
+  \SKV@normalizea\XKV@resb
+  \let\XKV@naa\@empty
+  \XKV@for@o\XKV@resb\XKV@tempa{%
+    \expandafter\XKV@g@tkeyname\XKV@tempa=\@nil\XKV@tempa
+    \XKV@addtolist@x\XKV@naa\XKV@tempa
+  }%
+  \ifnum\XKV@depth=\z@\let\XKV@rm\@empty\fi
+  \XKV@usepresetkeys{#1}{preseth}%
+  \expandafter\XKV@s@tkeys\expandafter{\XKV@resb}{#1}%
+  \XKV@usepresetkeys{#1}{presett}%
+  \let\CurrentOption\@empty
+}
+\SKV@def*\SKV@remspaceletter#1#2{%
+  \begingroup
+  \XKV@toks\expandafter{#2 #1}%
+  \def\SKV@tempa##1 #1##2\SKV@nil{%
+    \SKV@ifblank{##2}{%
+      \XKV@toks{##1}%
+    }{%
+      \XKV@toks{##1#1##2}%
+      \expandafter\SKV@tempa\the\XKV@toks\SKV@nil
+    }%
+  }%
+  \expandafter\SKV@tempa\the\XKV@toks\SKV@nil
+  \xdef#2{\the\XKV@toks}%
+  \endgroup
+}
+\SKV@def*\SKV@remletterspace#1#2{%
+  \begingroup
+  \XKV@toks\expandafter{#2#1 }%
+  \def\SKV@tempa##1#1 ##2\SKV@nil{%
+    \SKV@ifblank{##2}{%
+      \XKV@toks{##1}%
+    }{%
+      \XKV@toks{##1#1##2}%
+      \expandafter\SKV@tempa\the\XKV@toks\SKV@nil
+    }%
+  }%
+  \expandafter\SKV@tempa\the\XKV@toks\SKV@nil
+  \xdef#2{\the\XKV@toks}%
+  \endgroup
+}
+\SKV@def*\SKV@remletterletter#1#2{%
+  \begingroup
+  \XKV@toks\expandafter{#2#1#1}%
+  \def\SKV@tempa##1#1#1##2\SKV@nil{%
+    \XKV@toks{##1#1##2}%
+    \SKV@ifblank{##2}{}{\expandafter\SKV@tempa\the\XKV@toks\SKV@nil}%
+  }%
+  \expandafter\SKV@tempa\the\XKV@toks\SKV@nil
+  \def\SKV@tempa##1#1#1\SKV@nil{\gdef#2{##1}}%
+  \expandafter\SKV@tempa\the\XKV@toks#1\SKV@nil
+  \endgroup
+}
+\def\SKV@remcommaequal#1#2{%
+  \begingroup
+  \XKV@toks\expandafter{#2#1}%
+  \def\SKV@tempa##1#1##2\SKV@nil{%
+    \SKV@ifblank{##2}{%
+      \XKV@toks{##1}%
+    }{%
+      \XKV@toks{##1=##2}%
+      \expandafter\SKV@tempa\the\XKV@toks\SKV@nil
+    }%
+  }%
+  \expandafter\SKV@tempa\the\XKV@toks\SKV@nil
+  \xdef#2{\the\XKV@toks}%
+  \endgroup
+}
+\SKV@def*\SKV@normalizea#1{%
+  \@expandtwoargs\in@{ ,}{\SKV@expandox{#1}}%
+  \ifin@\SKV@remspaceletter{,}#1\fi
+  \@expandtwoargs\in@{, }{\SKV@expandox{#1}}%
+  \ifin@\SKV@remletterspace{,}#1\fi
+  \@expandtwoargs\in@{,,}{\SKV@expandox{#1}}%
+  \ifin@\SKV@remletterletter{,}#1\fi
+  \@expandtwoargs\in@{ =}{\SKV@expandox{#1}}%
+  \ifin@\SKV@remspaceletter{=}#1\fi
+  \@expandtwoargs\in@{= }{\SKV@expandox{#1}}%
+  \ifin@\SKV@remletterspace{=}#1\fi
+  \@expandtwoargs\in@{==}{\SKV@expandox{#1}}%
+  \ifin@\SKV@remletterletter{=}#1\fi
+  \@expandtwoargs\in@{,=}{\SKV@expandox{#1}}%
+  \ifin@\SKV@remcommaequal{,=}#1\fi
+  \@expandtwoargs\in@{=,}{\SKV@expandox{#1}}%
+  \ifin@\SKV@remcommaequal{=,}#1\fi
+}
+\SKV@pdef\AtStartOfDocument{\AtBeginDocument}
+\SKV@pdef\BeforeStartOfDocument{\SKV@gapptomacro@a\SKV@beforestartdocument}
+\SKV@def*\SKV@beforestartdocument{}
+\SKV@preptomacro@a\document{%
+  \endgroup
+  \let\BeforeStartOfDocument\@firstofone
+  \SKV@beforestartdocument
+  \protected\long\def\BeforeStartOfDocument{\expandafter\@notprerr\@gobble}%
+  \SKV@undef\SKV@beforestartdocument
+  \begingroup
+}
+\SKV@pdef\AfterStartOfDocument{\SKV@gapptomacro@a\SKV@afterstartdocument}
+\SKV@def*\SKV@afterstartdocument{}
+\SKV@apptomacro@a\document{%
+  \let\AfterStartOfDocument\@firstofone
+  \SKV@afterstartdocument
+  \protected\long\def\AfterStartOfDocument{\expandafter\@notprerr\@gobble}%
+  \SKV@undef\SKV@afterstartdocument\ignorespaces
+}
+\SKV@def*\SKV@gobblescape{%
+  \ifnum\escapechar>255\else
+  \ifnum\escapechar<0\else
+    \expandafter\expandafter\csname @gobble\ifnum\escapechar=32 space\fi
+    \expandafter\expandafter\expandafter\endcsname
+  \fi\fi
+  \string
+}
+\SKV@def*\SKV@save#1{%
+  \SKV@findescape{#1}{}{\SKV@err{'#1' not a control sequence}\@ehc}
+  \SKV@ifnamedef{Saved\SKV@gobblescape#1}{%
+    \SKV@err{%
+      \string#1\space already saved. You've to restore\MessageBreak
+      it or undefine \SKV@noexpandcs{Saved\SKV@gobblescape#1}%
+      before\MessageBreak you can save \string#1\space again
+    }\@ehc
+  }{%
+    \nameletcs{Saved\SKV@gobblescape#1}{#1}%
+  }%
+}
+\SKV@def*\SKV@restore#1{%
+  \SKV@findescape{#1}{}{\SKV@err{'#1' not a control sequence}\@ehc}
+  \SKV@ifnamedef{Saved\SKV@gobblescape#1}{%
+    \csletname{#1}{Saved\SKV@gobblescape#1}%
+    \SKV@nameundef{Saved\SKV@gobblescape#1}%
+  }{%
+    \SKV@warn{%
+      \@nameuse{Saved\SKV@gobblescape#1} undefined: can't be restored\on@line.
+      \MessageBreak Note that each call of \string\SKV@restore\space undefines
+      \MessageBreak the saved command
+    }%
+  }%
+}
+\providecommand*\input@path{}
+\SKV@pdef*\InputFileOnce{%
+  \edef\SKV@no{\z@}\SKV@save\input@path
+  \SKV@testopt\SKV@InputFileOnce{.}%
+}
+\SKV@def*\SKV@InputFileOnce[#1]#2{%
+  \SKV@gapptomacro@a\input@path{{#1/}}%
+  \if X\SKV@nameuse{#2@read}\relax
+    \ifSKV@inputonce
+      \SKV@afterelsefi
+      \SKV@err{! File '#2' already read}{File '#2' can't be read again.}%
+    \fi
+  \else
+    \SKV@namegdef{#2@read}{X}%
+    \InputIfFileExists{#2}{}{%
+      \typein[\Answer]{^^J! File '\string#2' does not exist.^^J
+      Enter filename or 'n' and <return> to continue.}%
+      \if n\Answer\relax\else
+        \SKV@expandargs{0}{\SKV@InputFileOnce[#1]}\Answer\SKV@nil
+      \fi
+    }%
+  \fi
+  \ifnum\SKV@no=\z@\SKV@restore\input@path\fi
+  \edef\SKV@no{\@ne}%
+}
+
+\endinput
+
+%%% End of file skeyval.sty %%%
\ No newline at end of file