tikz-cd (3Mar)

git-svn-id: svn://tug.org/texlive/trunk@33079 c570f23f-e606-0410-a88d-b1316a301751

2 files changed, 687 insertions, 745 deletions

diff --git a/Master/texmf-dist/tex/latex/tikz-cd/tikz-cd.sty b/Master/texmf-dist/tex/latex/tikz-cd/tikz-cd.sty
index 093b2e93e59..cabf3aab1e4 100644
--- a/Master/texmf-dist/tex/latex/tikz-cd/tikz-cd.sty
+++ b/Master/texmf-dist/tex/latex/tikz-cd/tikz-cd.sty
@@ -1,4 +1,4 @@
-% Copyright 2011, 2012 by Florêncio Neves
+% Copyright 2011, 2012, 2014 by Florêncio Neves
 %
 % This program is free software: you can redistribute it and/or modify
 % it under the terms of the GNU General Public License as published by
@@ -13,749 +13,8 @@
 % You should have received a copy of the GNU General Public License
 % along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-\ProvidesPackage{tikz-cd}[2012/12/30 v0.3c Commutative diagrams with tikz.]
-\RequirePackage{tikz}[2010/10/13] % pgf version 2.10 required
-
-\usetikzlibrary{matrix}
-
-\newif\iftikzcd@mathmode
-
-\pgfqkeys{/tikz/commutative diagrams}{
-  .search also={/tikz},
-  arrows/.style={
-    /tikz/commutative diagrams/every arrow/.append style={#1}},
-  labels/.style={
-    /tikz/commutative diagrams/every label/.append style={#1}},
-  diagrams/.style={
-    /tikz/commutative diagrams/every diagram/.append style={#1}},
-  description/.style={
-    /tikz/anchor=center,
-    /tikz/fill=\pgfkeysvalueof{/tikz/commutative diagrams/background color}},
-  crossing over/.style={
-    /tikz/preaction={
-      /tikz/draw=\pgfkeysvalueof{/tikz/commutative diagrams/background color},
-      /tikz/arrows=-,
-      /tikz/line width=\pgfkeysvalueof{/tikz/commutative diagrams/crossing over clearance}}},
-  row sep/.code={\tikzcd@sep{row}{#1}},
-  column sep/.code={\tikzcd@sep{column}{#1}},
-  math mode/.is if=tikzcd@mathmode,
-  matrix of math nodes maybe/.style={%
-    /tikz/matrix of nodes,
-    /tikz/nodes={
-      execute at begin node=\iftikzcd@mathmode$\fi, %$
-      execute at end node=\iftikzcd@mathmode$\fi}}, %$
-  arrow style/.is choice}
-
-% generic arrow tip selection styles
-\pgfkeysdef{/tikz/commutative diagrams/arrow style/generic}{%
-  \pgfqkeys{/tikz/commutative diagrams}{
-    rightarrow/.style={/tikz/arrows=-#1 to},
-    Rightarrow/.style={
-      /tikz/arrows=-#1 implies,
-      /tikz/commutative diagrams/double line},
-    leftarrow/.style={/tikz/arrows=#1 to-},
-    Leftarrow/.style={
-      /tikz/arrows=#1 implies-,
-      /tikz/commutative diagrams/double line},
-    leftrightarrow/.style={/tikz/arrows=#1 to-#1 to},
-    Leftrightarrow/.style={
-      /tikz/arrows=#1 implies-#1 implies,
-      /tikz/commutative diagrams/double line},
-    mapsto/.style={/tikz/arrows=#1 |-#1 to},%|
-    mapsfrom/.style={/tikz/arrows=#1 to-#1 |},%|
-    hookrightarrow/.style={/tikz/arrows=#1 right hook-#1 to},
-    hookleftarrow/.style={/tikz/arrows=#1 to-#1 left hook},
-    rightharpoonup/.style={/tikz/arrows=-#1 left to},
-    rightharpoondown/.style={/tikz/arrows=-#1 right to},
-    leftharpoonup/.style={/tikz/arrows=#1 right to-},
-    leftharpoondown/.style={/tikz/arrows=#1 left to-},
-    rightarrowtail/.style={/tikz/arrows=#1 to reversed-#1 to},
-    leftarrowtail/.style={/tikz/arrows=#1 to-#1 to reversed},
-    twoheadrightarrow/.style={/tikz/arrows=-#1 double to},
-    twoheadleftarrow/.style={/tikz/arrows=#1 double to-},
-    maps to/.code={\pgfsetarrowsstart{#1 |}},%|
-    hook/.code={\pgfsetarrowsstart{#1 right hook}},
-    two heads/.code={\pgfsetarrowsend{#1 double to}},
-    tail/.code={\pgfsetarrowsstart{#1 to reversed}}}}
-
-\pgfqkeys{/tikz/commutative diagrams}{
-  dash/.style={/tikz/arrows=-},
-  dashrightarrow/.style={
-    /tikz/commutative diagrams/rightarrow,
-    /tikz/commutative diagrams/dashed},
-  dashleftarrow/.style={
-    /tikz/commutative diagrams/leftarrow,
-    /tikz/commutative diagrams/dashed},
-  equal/.style={
-    /tikz/arrows=-,
-    /tikz/commutative diagrams/double line},
-  equals/.style={/tikz/commutative diagrams/equal},
-  rightsquigarrow/.style={
-    /tikz/commutative diagrams/rightarrow,
-    /tikz/commutative diagrams/squiggly},
-  leftsquigarrow/.style={
-    /tikz/commutative diagrams/leftarrow,
-    /tikz/commutative diagrams/squiggly},
-  leftrightsquigarrow/.style={
-    /tikz/commutative diagrams/leftrightarrow,
-    /tikz/commutative diagrams/squiggly},
-  squiggly/.code={%
-    \expandafter\ifx\csname tikz@library@decorations.pathmorphing@loaded\endcsname\pgfutil@empty%
-    \else\PackageError{tikz-cd}{You need to say %
-      \string\usetikzlibrary{decorations.pathmorphing} to use squiggly arrows}{}\fi%
-    \pgfkeysalso{
-      /tikz/decorate,
-      /tikz/decoration={
-        zigzag,
-        segment length=9.25\pgflinewidth,
-        amplitude=1.9\pgflinewidth,
-        post=lineto, post length=6\pgflinewidth,
-        pre=lineto, pre length=6\pgflinewidth,
-        #1}}}}
-
-% The Computer Modern arrow style
-\pgfkeysdef{/tikz/commutative diagrams/arrow style/computer modern}{%
-  \pgfqkeys{/tikz/commutative diagrams}{
-    arrow style/generic={cm},
-    default arrow/.style={
-      /tikz/line join=round,
-      /tikz/commutative diagrams/rightarrow,
-      /tikz/line width=0.0929ex},
-    double line/.style={
-      /tikz/double=\pgfkeysvalueof{/tikz/commutative diagrams/background color},
-      /tikz/double distance=3.643\pgflinewidth},
-    dashed/.style={/tikz/dash pattern={on 7\pgflinewidth off 4\pgflinewidth}}}}
-
-% The tikz arrow style
-\pgfkeysdef{/tikz/commutative diagrams/arrow style/tikz}{%
-  \expandafter\ifx\csname tikz@library@arrows@loaded\endcsname\pgfutil@empty%
-  \else\PackageError{tikz-cd}{You need to say \string\usetikzlibrary{arrows} %
-    to use the `tikz' arrow style}{}\fi
-  \pgfqkeys{/tikz/commutative diagrams}{
-    arrow style/generic={\pgfutil@firstofone},
-    default arrow/.style={/tikz/commutative diagrams/rightarrow},
-    rightarrow/.style={/tikz/arrows=->},
-    leftarrow/.style={/tikz/arrows=<-},
-    leftrightarrow/.style={/tikz/arrows=<->},
-    mapsto/.style={/tikz/arrows=|->},%|
-    mapsfrom/.style={/tikz/arrows=<-|},%|
-    hookrightarrow/.style={/tikz/arrows=right hook->},
-    hookleftarrow/.style={/tikz/arrows=<-left hook},
-    rightarrowtail/.style={/tikz/arrows=>->},
-    leftarrowtail/.style={/tikz/arrows=<-<},
-    twoheadrightarrow/.style={/tikz/arrows=->>},
-    twoheadleftarrow/.style={/tikz/arrows=<<-}, %>>
-    two heads/.code={\pgfsetarrowsend{\csname tikz@special@arrow@end>>\endcsname}},
-    tail/.code={\pgfsetarrowsstart{\csname tikz@special@arrow@start>\endcsname}},
-    dashed/.style={/tikz/dashed},
-    double line/.style={
-      /tikz/double equal sign distance,
-      /tikz/double=\pgfkeysvalueof{/tikz/commutative diagrams/background color}}}}
-
-% Default settings
-\pgfqkeys{/tikz/commutative diagrams}{
-  every arrow/.style={
-    /tikz/commutative diagrams/.cd,
-    @enablequotes,
-    /tikz/draw,
-    default arrow},
-  every label/.style={
-    /tikz/commutative diagrams/.cd,
-    /tikz/auto,
-    /tikz/font=\everymath\expandafter{\the\everymath\scriptstyle},
-    /tikz/inner sep=0.5ex},
-  every diagram/.style={
-    /tikz/commutative diagrams/.cd,
-    /tikz/cells={/tikz/nodes={/tikz/shape={asymmetrical rectangle}}},
-    row sep=normal,
-    column sep=normal,
-    /tikz/baseline=0pt},
-  1-row diagram/.style={/tikz/baseline=(#1.base)},
-  math mode=true,
-  center yshift/.initial=tikzcdaxis,
-  row sep/huge/.initial=10ex,
-  row sep/large/.initial=7.5ex,
-  row sep/normal/.initial=5ex,
-  row sep/scriptsize/.initial=3.75ex,
-  row sep/small/.initial=2.5ex,
-  row sep/tiny/.initial=1.25ex,
-  column sep/huge/.initial=12ex,
-  column sep/large/.initial=9ex,
-  column sep/normal/.initial=6ex,
-  column sep/scriptsize/.initial=4.5ex,
-  column sep/small/.initial=3ex,
-  column sep/tiny/.initial=1.5ex,
-  arrow style=computer modern,
-  crossing over clearance/.initial=1.5ex,
-  background color/.initial=white}
-
-% pgfmath functions to obtain math fontdimens
-\pgfmathdeclarefunction{tikzcdaxis}{0}{%
-  \begingroup%
-    $\relax$% update fontdimens
-    \pgfutil@ifundefined{um_axis:N}% check if `unicode-math' is used
-      {\pgf@x=\the\fontdimen22\textfont2\relax}%
-      {\pgf@x=\expandafter\the\csname um_axis:N\endcsname\textstyle}%
-    \pgfmathreturn\pgf@x%
-  \endgroup}
-
-\pgfmathdeclarefunction{tikzcdrule}{0}{%
-  \begingroup%
-    $\relax$%
-    \pgfutil@ifundefined{um_fraction_rule:N}%
-      {\pgf@x=\the\fontdimen8\textfont3\relax}%
-      {\pgf@x=\expandafter\the\csname um_fraction_rule:N\endcsname\textstyle}%
-    \pgfmathreturn\pgf@x%
-  \endgroup}
-
-% The shape used inside matrices
-\pgfdeclareshape{asymmetrical rectangle} {
-  \inheritsavedanchors[from={rectangle}]
-  \inheritanchor[from={rectangle}]{base}
-  \inheritanchor[from={rectangle}]{north}
-  \inheritanchor[from={rectangle}]{south}
-  \inheritanchor[from={rectangle}]{base west}
-  \inheritanchor[from={rectangle}]{north west}
-  \inheritanchor[from={rectangle}]{south west}
-  \inheritanchor[from={rectangle}]{base east}
-  \inheritanchor[from={rectangle}]{north east}
-  \inheritanchor[from={rectangle}]{south east}
-  \inheritanchor[from={rectangle}]{mid}
-  \inheritanchor[from={rectangle}]{mid west}
-  \inheritanchor[from={rectangle}]{mid east}
-  \inheritbackgroundpath[from={rectangle}]
-  \anchor{center}{\pgf@anchor@rectangle@center\pgfmathsetlength\pgf@y%
-    {\pgfkeysvalueof{/tikz/commutative diagrams/center yshift}}}
-  \anchor{west}{\pgf@anchor@rectangle@west\pgfmathsetlength\pgf@y%
-    {\pgfkeysvalueof{/tikz/commutative diagrams/center yshift}}}
-  \anchor{east}{\pgf@anchor@rectangle@east\pgfmathsetlength\pgf@y%
-    {\pgfkeysvalueof{/tikz/commutative diagrams/center yshift}}}
-  \anchor{real center}{\pgf@anchor@rectangle@center}
-  \anchor{real west}{\pgf@anchor@rectangle@west}
-  \anchor{real east}{\pgf@anchor@rectangle@east}
-  \anchorborder{%
-    \pgfmathsetlength\pgfutil@tempdima%
-      {\pgfkeysvalueof{/tikz/commutative diagrams/center yshift}}%
-    \pgf@xb=\pgf@x% xb/yb is target
-    \pgf@yb=\pgf@y%
-    \southwest%
-    \pgf@xa=\pgf@x% xa/ya is se
-    \pgf@ya=\pgf@y%
-    \northeast%
-    \advance\pgf@x by-\pgf@xa%
-    \advance\pgf@y by-\pgf@ya%
-    \pgf@xc=.5\pgf@x% x/y is half width/height
-    \pgf@yc=.5\pgf@y%
-    \advance\pgf@xa by\pgf@xc% xa/ya becomes center
-    \advance\pgf@ya by\pgf@yc%
-    \ifdim\pgf@yb>0pt%
-      \northeast%
-      \pgf@yc=\pgf@y%
-      \advance\pgf@yc by-\pgfutil@tempdima%
-    \else%
-      \southwest%
-      \pgf@yc=-\pgf@y%
-      \advance\pgf@yc by\pgfutil@tempdima%
-    \fi
-    \edef\pgf@marshal{%
-      \noexpand\pgfpointborderrectangle
-      {\noexpand\pgfqpoint{\the\pgf@xb}{\the\pgf@yb}}
-      {\noexpand\pgfqpoint{\the\pgf@xc}{\the\pgf@yc}}%
-    }%
-    \pgf@process{\pgf@marshal}%
-    \advance\pgf@x by\pgf@xa%
-    \advance\pgf@y by\pgfutil@tempdima%
-  }%
-}%
-
-% The arrow commands
-\def\tikzcd@arrow{%
-  \begingroup% 
-  \pgfutil@ifnextchar[{\tikzcd@ar@getdir}{\tikzcd@ar@getdir[]}}
-
-\def\tikzcd@ar@getdir[#1]#2{%
-  \c@pgf@counta\pgfmatrixcurrentrow%
-  \c@pgf@countb\pgfmatrixcurrentcolumn%
-  \tikzcd@parse#2\relax%
-  \toks@\expandafter{\tikzcd@savedpaths\path[/tikz/commutative diagrams/every arrow,#1]}%
-  \global\edef\tikzcd@savedpaths{%
-    \the\toks@%
-    (\tikzmatrixname-\the\pgfmatrixcurrentrow-\the\pgfmatrixcurrentcolumn\noexpand\tikzcd@startanchor) to }%
-  \pgfutil@ifnextchar[{\tikzcd@ar@getlabel}{\pgfutil@ifnextchar\bgroup{\tikzcd@ar@getlabel[]}{\tikzcd@ar@final}}}
-
-\def\tikzcd@ar@getlabel[#1]#2{%
-  \expandafter\global\expandafter\def\expandafter\tikzcd@savedpaths\expandafter{\tikzcd@savedpaths%
-    node[/tikz/commutative diagrams/every label,#1]{\tikzcd@mathmaybe{#2}}}%
-  \pgfutil@ifnextchar[{\tikzcd@ar@getlabel}{\pgfutil@ifnextchar\bgroup{\tikzcd@ar@getlabel[]}{\tikzcd@ar@final}}}
-
-\def\tikzcd@ar@final{%
-  \toks@\expandafter{\tikzcd@savedpaths}%
-  \global\edef\tikzcd@savedpaths{%
-    \the\toks@%
-    (\tikzmatrixname-\the\c@pgf@counta-\the\c@pgf@countb\noexpand\tikzcd@endanchor); }%
-  \endgroup}% restore pgf counters
-
-\def\tikzcd@xar#1{\pgfutil@ifnextchar[{\tikzcd@@xar{#1}}{\tikzcd@arrow[]{#1}}}
-
-\def\tikzcd@@xar#1[#2]{\tikzcd@arrow[#2]{#1}}
-
-\def\tikzcd@parse#1{% Parser for arrow direction argument
-  \def\tikzcd@temp{\tikzcd@parse}%
-  \ifx#1r\advance\c@pgf@countb by1\else%
-   \ifx#1d\advance\c@pgf@counta by1\else%
-    \ifx#1l\advance\c@pgf@countb by-1\else%
-     \ifx#1u\advance\c@pgf@counta by-1\else%
-      \ifx#1\relax\let\tikzcd@temp\empty%
-       \else\PackageError{tikz-cd}{Arrow direction argument must contain %
-                                   only the characters u, d, l, r}{}\fi\fi\fi\fi\fi%
-  \tikzcd@temp}
-
-% `quotes' library support
-\def\tikzcd@passquotes#1{\tikzset{every to/.append style={#1}}}
-
-\pgfqkeys{/tikz/commutative diagrams}{
-  @enablequotes/.style={
-    /handlers/first char syntax/the character "/.initial=\tikzcd@passquotes,
-    /tikz/edge quotes mean/.try={%
-      edge node={node [/tikz/commutative diagrams/every label,##2]{\tikzcd@mathmaybe{##1}}}}}}
-
-% `start anchor', `end anchor', and `shift' keys
-\def\tikzcd@setanchor#1[#2]#3\relax{%
-  \ifx\relax#2\relax\else%
-    \pgfqkeys{/tikz/commutative diagrams}{@#1transform/.append style={#2},@shiftabletopath}%
-  \fi%
-  \ifx\relax#3\relax%
-    \expandafter\let\csname tikzcd@#1anchor\endcsname\empty%
-  \else%
-    \expandafter\def\csname tikzcd@#1anchor\endcsname{.#3}%
-  \fi}
-
-\pgfqkeys{/tikz/commutative diagrams}{
-  @shiftabletopath/.style={
-    /tikz/execute at begin to={%
-      \begingroup%
-        \def\tikz@tonodes{coordinate[pos=0,commutative diagrams/@starttransform/.try](tikzcd@nodea) %
-                          coordinate[pos=1,commutative diagrams/@endtransform/.try](tikzcd@nodeb)}%
-        \path (\tikztostart) \tikz@to@path;%
-      \endgroup%
-      \def\tikztostart{tikzcd@nodea}%
-      \def\tikztotarget{tikzcd@nodeb}%
-      \toks@\expandafter{\tikz@to@path}%
-      \edef\tikz@to@path{(tikzcd@nodea) \the\toks@}
-    },
-    /tikz/commutative diagrams/@shiftabletopath/.code={}},
-  start anchor/.code={%
-    \pgfutil@ifnextchar[{\tikzcd@setanchor{start}}{\tikzcd@setanchor{start}[]}#1\relax},%]
-  end anchor/.code={%
-    \pgfutil@ifnextchar[{\tikzcd@setanchor{end}}{\tikzcd@setanchor{end}[]}#1\relax},%]
-  start anchor=,
-  end anchor=,
-  shift left/.style={
-    /tikz/commutative diagrams/@shiftabletopath,
-    /tikz/execute at begin to={%
-      \pgfpointnormalised{%
-        \pgfpointdiff{\pgfpointanchor{tikzcd@nodeb}{center}}{\pgfpointanchor{tikzcd@nodea}{center}}}%
-      \pgfgetlastxy{\tikzcd@x}{\tikzcd@y}%
-      \pgfmathparse{(#1)/1pt}%
-      \coordinate (tikzcd@nodea) at ([shift={(\pgfmathresult*\tikzcd@y,-\pgfmathresult*\tikzcd@x)}]tikzcd@nodea);%
-      \coordinate (tikzcd@nodeb) at ([shift={(\pgfmathresult*\tikzcd@y,-\pgfmathresult*\tikzcd@x)}]tikzcd@nodeb);}},
-  shift right/.style={
-    /tikz/commutative diagrams/shift left={-(#1)}},
-  transform nodes/.style={
-    /tikz/commutative diagrams/@shiftabletopath,
-    /tikz/commutative diagrams/@starttransform/.append style={#1},
-    /tikz/commutative diagrams/@endtransform/.append style={#1}},
-  shift/.style={
-    /tikz/shift={#1},% we need this for labels to receive a shift
-    /tikz/commutative diagrams/transform nodes={/tikz/shift={#1}}},
-  xshift/.style={
-    /tikz/xshift={#1},
-    /tikz/commutative diagrams/transform nodes={/tikz/xshift={#1}}},
-  yshift/.style={
-    /tikz/yshift={#1},
-    /tikz/commutative diagrams/transform nodes={/tikz/yshift={#1}}}}
-
-% The `tikzcd' environment
-\def\tikzcd{\pgfutil@ifnextchar[{\tikzcd@}{\tikzcd@[]}}
-
-\def\tikzcd@[#1]{%
-  \tikzpicture[/tikz/commutative diagrams/every diagram,#1]%
-  \def\arrow{\tikzcd@arrow}%
-  \def\ar{\tikzcd@arrow}%
-  \def\rar{\tikzcd@xar{r}}%
-  \def\lar{\tikzcd@xar{l}}%
-  \def\dar{\tikzcd@xar{d}}%
-  \def\uar{\tikzcd@xar{u}}%
-  \def\urar{\tikzcd@xar{ur}}%
-  \def\ular{\tikzcd@xar{ul}}%
-  \def\drar{\tikzcd@xar{dr}}%
-  \def\dlar{\tikzcd@xar{dl}}%
-  \global\let\tikzcd@savedpaths\empty
-  \matrix[/tikz/commutative diagrams/matrix of math nodes maybe]\bgroup}
-
-\def\endtikzcd{%
-  \toks@\expandafter{\tikzcd@savedpaths}%
-  \global\edef\tikzcd@savedpaths{%
-    \noexpand\tikzset{commutative diagrams/\the\pgfmatrixcurrentrow-row diagram/.try=\tikzmatrixname}%
-    \the\toks@}%
-  \pgfmatrixendrow\egroup;%
-  \tikzcd@savedpaths%
-  \endtikzpicture}
-
-\def\tikzcd@mathmaybe#1{\iftikzcd@mathmode$\relax #1$\else#1\fi}
-
-\def\tikzcd@sep#1#2{
-  \pgfkeysifdefined{/tikz/commutative diagrams/#1 sep/#2}%
-    {\pgfkeysalso{/tikz/#1 sep=\pgfkeysvalueof{/tikz/commutative diagrams/#1 sep/#2}}}%
-    {\pgfkeysalso{/tikz/#1 sep=#2}}}
-
-% Computer modern arrow tips
-\pgfarrowsdeclare{cm to}{cm to}
-{
-  \pgfarrowsleftextend{-5.833\pgflinewidth}
-  \pgfarrowsrightextend{0.5\pgflinewidth}
-}
-{
-  \pgfutil@tempdima=\pgflinewidth
-  \pgfsetdash{}{+0pt}
-  \pgfsetroundcap
-  \pgfsetroundjoin
-  \pgfpathmoveto{\pgfqpoint{-5.333\pgfutil@tempdima}{6\pgfutil@tempdima}}
-  \pgfpathcurveto
-  {\pgfqpoint{-4.2\pgfutil@tempdima}{2.5\pgfutil@tempdima}}
-  {\pgfqpoint{-2.133\pgfutil@tempdima}{0.6\pgfutil@tempdima}}
-  {\pgfpointorigin}
-  \pgfpathcurveto
-  {\pgfqpoint{-2.133\pgfutil@tempdima}{-0.6\pgfutil@tempdima}}
-  {\pgfqpoint{-4.2\pgfutil@tempdima}{-2.5\pgfutil@tempdima}}
-  {\pgfqpoint{-5.333\pgfutil@tempdima}{-6\pgfutil@tempdima}}
-  \pgfusepathqstroke
-}
-
-\pgfarrowsdeclare{cm implies}{cm implies}
-{
-  \pgfmathsetlength{\pgfutil@tempdima}{-0.729\pgflinewidth+.25*\pgfinnerlinewidth}
-  \pgfarrowsleftextend{\pgfutil@tempdima}
-  \pgfmathsetlength{\pgfutil@tempdima}{1.094\pgflinewidth-.25*\pgfinnerlinewidth}
-  \pgfarrowsrightextend{\pgfutil@tempdima}
-}
-{
-  \pgfmathsetlength{\pgfutil@tempdimb}{.5\pgflinewidth-.5*\pgfinnerlinewidth}
-  \pgfutil@tempdima\pgflinewidth
-  \pgfsetlinewidth{\pgfutil@tempdimb}
-  \pgfsetdash{}{+0pt}
-  \pgfsetroundcap
-  \pgfsetroundjoin
-  \pgfpathmoveto{\pgfqpoint{-0.542\pgfutil@tempdima}{1.142\pgfutil@tempdima}}
-  \pgfpathcurveto
-  {\pgfqpoint{-0.247\pgfutil@tempdima}{0.476\pgfutil@tempdima}}
-  {\pgfqpoint{0.29\pgfutil@tempdima}{0.114\pgfutil@tempdima}}
-  {\pgfqpoint{0.844\pgfutil@tempdima}{0pt}}
-  \pgfpathcurveto
-  {\pgfqpoint{0.29\pgfutil@tempdima}{-0.114\pgfutil@tempdima}}
-  {\pgfqpoint{-0.247\pgfutil@tempdima}{-0.476\pgfutil@tempdima}}
-  {\pgfqpoint{-0.542\pgfutil@tempdima}{-1.142\pgfutil@tempdima}}
-  \pgfusepathqstroke
-}
-
-\pgfarrowsdeclare{cm bold to}{cm bold to}
-{
-  \pgfarrowsleftextend{-4.055\pgflinewidth}
-  \pgfarrowsrightextend{0.5\pgflinewidth}
-}
-{
-  \pgfutil@tempdima=0.667\pgflinewidth
-  \pgfsetdash{}{+0pt}
-  \pgfsetroundcap
-  \pgfsetroundjoin
-  \pgfpathmoveto{\pgfqpoint{-5.333\pgfutil@tempdima}{6\pgfutil@tempdima}}
-  \pgfpathcurveto
-  {\pgfqpoint{-4.2\pgfutil@tempdima}{2.5\pgfutil@tempdima}}
-  {\pgfqpoint{-2.133\pgfutil@tempdima}{0.6\pgfutil@tempdima}}
-  {\pgfpointorigin}
-  \pgfpathcurveto
-  {\pgfqpoint{-2.133\pgfutil@tempdima}{-0.6\pgfutil@tempdima}}
-  {\pgfqpoint{-4.2\pgfutil@tempdima}{-2.5\pgfutil@tempdima}}
-  {\pgfqpoint{-5.333\pgfutil@tempdima}{-6\pgfutil@tempdima}}
-  \pgfusepathqstroke
-}
-
-\pgfarrowsdeclare{cm left to}{cm left to}
-{
-  \pgfarrowsleftextend{-5.833\pgflinewidth}
-  \pgfarrowsrightextend{0.5\pgflinewidth}
-}
-{
-  \pgfutil@tempdima=\pgflinewidth
-  \pgfsetdash{}{+0pt}
-  \pgfsetroundcap
-  \pgfsetroundjoin
-  \pgfpathmoveto{\pgfqpoint{-5.333\pgfutil@tempdima}{6\pgfutil@tempdima}}
-  \pgfpathcurveto
-  {\pgfqpoint{-4.2\pgfutil@tempdima}{2.5\pgfutil@tempdima}}
-  {\pgfqpoint{-2.133\pgfutil@tempdima}{0.6\pgfutil@tempdima}}
-  {\pgfpointorigin}
-  \pgfusepathqstroke
-}
-
-\pgfarrowsdeclare{cm right to}{cm right to}
-{
-  \pgfarrowsleftextend{-5.833\pgflinewidth}
-  \pgfarrowsrightextend{0.5\pgflinewidth}
-}
-{
-  \pgfutil@tempdima=\pgflinewidth
-  \pgfsetdash{}{+0pt}
-  \pgfsetroundcap
-  \pgfsetroundjoin
-  \pgfpathmoveto{\pgfpointorigin}
-  \pgfpathcurveto
-  {\pgfqpoint{-2.133\pgfutil@tempdima}{-0.6\pgfutil@tempdima}}
-  {\pgfqpoint{-4.2\pgfutil@tempdima}{-2.5\pgfutil@tempdima}}
-  {\pgfqpoint{-5.333\pgfutil@tempdima}{-6\pgfutil@tempdima}}
-  \pgfusepathqstroke
-}
-
-\pgfarrowsdeclare{cm |}{cm |}
-{
-  \pgfarrowsleftextend{-0.5\pgflinewidth}
-  \pgfarrowsrightextend{0.5\pgflinewidth}
-}
-{
-  \pgfsetdash{}{+0pt}
-  \pgfsetroundcap
-  \pgfpathmoveto{\pgfqpoint{0pt}{-4\pgflinewidth}}
-  \pgfpathlineto{\pgfqpoint{0pt}{4\pgflinewidth}}
-  \pgfusepathqstroke
-}
-
-\pgfarrowsdeclare{cm left hook}{cm left hook}
-{
-  \pgfarrowsleftextend{-0.5\pgflinewidth}
-  \pgfarrowsrightextend{3.5\pgflinewidth}
-}
-{
-  \pgfsetdash{}{+0pt}
-  \pgfsetroundcap
-  \pgfpathmoveto{\pgfqpoint{0pt}{4.667\pgflinewidth}}
-  \pgfpathcurveto
-    {\pgfqpoint{4\pgflinewidth}{4.667\pgflinewidth}}
-    {\pgfqpoint{4\pgflinewidth}{0pt}}
-    {\pgfpointorigin}
-  \pgfusepathqstroke
-}
-
-\pgfarrowsdeclare{cm right hook}{cm right hook}
-{
-  \pgfarrowsleftextend{-0.5\pgflinewidth}
-  \pgfarrowsrightextend{3.5\pgflinewidth}
-}
-{
-  \pgfsetdash{}{+0pt}
-  \pgfsetroundcap
-  \pgfpathmoveto{\pgfqpoint{0pt}{-4.667\pgflinewidth}}
-  \pgfpathcurveto
-    {\pgfqpoint{4\pgflinewidth}{-4.667\pgflinewidth}}
-    {\pgfqpoint{4\pgflinewidth}{0pt}}
-    {\pgfpointorigin}
-  \pgfusepathqstroke
-}
-
-\pgfarrowsdeclare{cm o}{cm o}
-{
-  \pgfarrowsleftextend{+-.5\pgflinewidth}
-  \pgfarrowsrightextend{7.167\pgflinewidth}
-}
-{
-  \pgfpathcircle{\pgfqpoint{3.333\pgflinewidth}{0pt}}{3.333\pgflinewidth}
-  \pgfusepathqstroke
-}
-
-\pgfarrowsdeclare{cm *}{cm *}
-{
-  \pgfarrowsleftextend{+-.5\pgflinewidth}
-  \pgfarrowsrightextend{7.167\pgflinewidth}
-}
-{
-  \pgfpathcircle{\pgfqpoint{3.333\pgflinewidth}{0pt}}{3.333\pgflinewidth}
-  \pgfusepathqfillstroke
-}
-
-\pgfarrowsdeclare{cm cap}{cm cap}
-{
-  \pgfarrowsleftextend{+0pt}
-  \pgfarrowsrightextend{+\pgflinewidth}
-}
-{
-  \pgfsetdash{}{+0pt}
-  \pgfsetroundcap
-  \pgfpathmoveto{\pgfpointorigin}
-  \pgfpathlineto{\pgfqpoint{0.5\pgflinewidth}{0pt}}
-  \pgfusepathqstroke
-}
-
-\pgfarrowsdeclare{cm implies cap}{cm implies cap}
-{
-  \pgfmathsetlength{\pgfutil@tempdima}{.5\pgflinewidth-.5*\pgfinnerlinewidth}
-  \pgfarrowsleftextend{+0pt}
-  \pgfarrowsrightextend{+\pgfutil@tempdima}
-}
-{
-  \pgfmathsetlength{\pgfutil@tempdima}{.5\pgflinewidth-.5*\pgfinnerlinewidth}
-  \pgfmathsetlength{\pgfutil@tempdimb}{.5\pgflinewidth-.5*\pgfutil@tempdima}
-  \pgfsetlinewidth{\pgfutil@tempdima}
-  \pgfsetdash{}{+0pt}
-  \pgfsetroundcap
-  \pgfpathmoveto{\pgfqpoint{0pt}{+1\pgfutil@tempdimb}}
-  \pgfpathlineto{\pgfqpoint{0.5\pgfutil@tempdima}{+1\pgfutil@tempdimb}}
-  \pgfpathmoveto{\pgfqpoint{0pt}{-1\pgfutil@tempdimb}}
-  \pgfpathlineto{\pgfqpoint{0.5\pgfutil@tempdima}{-1\pgfutil@tempdimb}}
-  \pgfusepathqstroke
-}
-
-\pgfarrowsdeclarereversed{cm to reversed}{cm to reversed}{cm to}{cm to}
-\pgfarrowsdeclarereversed{cm left to reversed}{cm left to reversed}{cm left to}{cm left to}
-\pgfarrowsdeclarereversed{cm right to reversed}{cm right to reversed}{cm right to}{cm right to}
-
-\pgfarrowsdeclaredouble{cm double to}{cm double to}{cm to}{cm to}
-\pgfarrowsdeclaredouble{cm double to reversed}{cm double to reversed}{cm to reversed}{cm to reversed}
-
-% Font arrows (experimental)
-\pgfkeysdef{/tikz/commutative diagrams/enable font arrows}{%
-  % A little surgery on pgf's arrow selection commands
-  \pgfutil@ifundefined{tikzcd@orig@pgfsetarrowsend}%
-    {\let\tikzcd@orig@pgfsetarrowsend\pgfsetarrowsend
-     \let\tikzcd@orig@pgfsetarrowsstart\pgfsetarrowsstart
-     \def\pgfsetarrowsend##1{%
-       \pgfutil@ifundefined{tikzcd@arrows@cmd@##1}%
-         {\tikzcd@orig@pgfsetarrowsend{##1}}
-         {\tikzcd@arrowset{end}{##1}}}%
-     \def\pgfsetarrowsstart##1{%
-       \pgfutil@ifundefined{tikzcd@arrows@cmd@##1}%
-         {\tikzcd@orig@pgfsetarrowsstart{##1}}
-         {\tikzcd@arrowset{start}{##1}}}}%
-    {}}
-
-\pgfqkeys{/tikz/commutative diagrams/font arrows}{
-  double distance/.store in={\tikzcdfontarrowsdoubledistance},
-  declare head/.code n args={4}{\tikzcd@arrowsdeclare{#1}{#2}{#3}{#4}{\iftrue}},
-  declare tail/.code n args={4}{\tikzcd@arrowsdeclare{#1}{#2}{#3}{#4}{\iffalse}}}
-
-% #1 = name
-% #2 = command
-% #3 = axis height
-% #4 = width of clip box
-% #5 = \iftrue for head, \iffalse for tail
-\def\tikzcd@arrowsdeclare#1#2#3#4#5{%
-  \expandafter\def\csname tikzcd@arrows@cmd@#1\endcsname{#2}%
-  \expandafter\def\csname tikzcd@arrows@ifhead@#1\endcsname{#5}%
-  \expandafter\def\csname tikzcd@arrows@axheight@#1\endcsname{#3}%
-  \expandafter\def\csname tikzcd@arrows@length@#1\endcsname{#4}}
-
-% Select the pdfTeX or generic backend according to pgf's setting.
-%
-% The generic backend uses a rectangle to clip the font glyph, and the
-% pdfTeX backend uses the font glyph as the clipping path for a big
-% black box.  The latter method seems to trick pdf viewers and
-% printers to treat the resulting arrow tip as a graphic element
-% instead of text, making the transition between line and arrow tip
-% less noticeable.
-\def\tikzcd@temp{pgfsys-pdftex.def}
-\ifx\pgfsysdriver\tikzcd@temp
-  \def\tikzcd@arrowset{\tikzcd@arrowset@pdftex}
-\else
-  \def\tikzcd@arrowset{\tikzcd@arrowset@generic}
-\fi
-
-% #1 `start' or `end'
-% #2 arrow name
-\def\tikzcd@arrowset@pdftex#1#2{%
-  \expandafter\def\csname pgf@#1arrow\endcsname{%
-    \pgfinterruptpath%
-    \pgf@relevantforpicturesizefalse%
-    \pgftransformreset%
-    \pgfsys@beginscope%
-    \pgfmathsetlengthmacro\tikzcd@len{\csname tikzcd@arrows@length@#2\endcsname}%
-    \setbox\pgfutil@tempboxa=\hbox{\pgfinterruptpicture %
-                 \csname tikzcd@arrows@cmd@#2\endcsname\endpgfinterruptpicture}%
-    \csname tikzcd@arrows@ifhead@#2\endcsname%
-      \pgftransformxshift{\tikzcd@len-\wd\pgfutil@tempboxa}%
-    \else%
-      \pgftransformrotate{180}%
-      \pgftransformxshift{-\tikzcd@len}%
-    \fi%
-    \pgftransformyshift{-\csname tikzcd@arrows@axheight@#2\endcsname}%
-    \pdfliteral{7 Tr}%
-    \pgflowlevelsynccm\copy\pgfutil@tempboxa%
-    \csname tikzcd@arrows@ifhead@#2\endcsname\else%
-       \pgftransformxshift{\tikzcd@len-\wd\pgfutil@tempboxa}%
-    \fi%
-    \pgfpathrectangle{\pgfpoint{0pt}{-1ex}}{\pgfpoint{-\tikzcd@len}{3ex}}%
-    \pgfusepathqfill%
-    \pgfsys@endscope%
-    \endpgfinterruptpath}%
-  \expandafter\def\csname pgf@shorten@#1\endcsname{%
-    \pgfmathsetlength\pgf@xa{\csname tikzcd@arrows@length@#2\endcsname}%
-    \advance\pgf@x by\pgf@xa}}%
-
-% #1 `start' or `end'
-% #2 arrow name
-\def\tikzcd@arrowset@generic#1#2{%
-  \expandafter\def\csname pgf@#1arrow\endcsname{%
-    \pgfinterruptpath%
-    \pgf@relevantforpicturesizefalse%
-    \pgftransformreset%
-    \pgfsys@beginscope%
-    \pgfmathsetlengthmacro\tikzcd@len{\csname tikzcd@arrows@length@#2\endcsname}%
-    \pgfpathrectangle{\pgfpoint{0pt}{-1.5ex}}{\pgfpoint{\tikzcd@len}{3ex}}%
-    \pgfusepathqclip%
-    \csname tikzcd@arrows@ifhead@#2\endcsname%
-      \pgftransformxshift{\tikzcd@len}%
-    \else%
-      \pgftransformrotate{180}%
-      \pgftransformxshift{-\tikzcd@len}%
-    \fi%
-    \pgftransformyshift{-\csname tikzcd@arrows@axheight@#2\endcsname}%
-    \pgftext[\csname tikzcd@arrows@ifhead@#2\endcsname right\else left\fi,base]%
-            {\csname tikzcd@arrows@cmd@#2\endcsname}%
-    \pgfsys@endscope%
-    \endpgfinterruptpath}%
-  \expandafter\def\csname pgf@shorten@#1\endcsname{%
-    \pgfmathsetlength\pgf@xa{\csname tikzcd@arrows@length@#2\endcsname}%
-    \advance\pgf@x by\pgf@xa}}%
-
-% The arguments for `declare head' and `declare tail' are 1. name of
-% the arrow tip, 2. TeX command corresponding to an arrow, 3. distance
-% from baseline to arrow stem, 4. width of the clip box, which should
-% be big enough to contain the whole tip.
-\pgfqkeys{/tikz/commutative diagrams/font arrows}{
-  double distance={3.8\pgflinewidth},
-  declare head={math to}{$\to$}{tikzcdaxis}{1ex},
-  declare head={math to reversed}{$\leftarrowtail$}{tikzcdaxis}{1ex},
-  declare tail={math cap}{$\to$}{tikzcdaxis}{1ex},
-  declare tail={math |}{$\mapsto$}{tikzcdaxis}{1ex},%|
-  declare head={math o}{$\multimap$}{tikzcdaxis}{1.4ex},
-  declare head={math implies}{$\Rightarrow$}{tikzcdaxis}{1.4ex},
-  declare tail={math implies cap}{$\Rightarrow$}{tikzcdaxis}{1ex},
-  declare head={math left hook}{$\hookleftarrow$}{tikzcdaxis}{1ex},
-  declare tail={math right hook}{$\hookrightarrow$}{tikzcdaxis}{1ex},
-  declare head={math double to}{$\twoheadrightarrow$}{tikzcdaxis}{1.4ex},
-  declare head={math left to}{$\rightharpoonup$}{tikzcdaxis}{1ex},
-  declare head={math right to}{$\rightharpoondown$}{tikzcdaxis}{1ex},
-}
-
-% The `math font' arrow style
-\pgfkeys{/tikz/commutative diagrams/arrow style/math font/.style={
-    /tikz/commutative diagrams/.cd,
-    enable font arrows,
-    arrow style/generic={math},
-    default arrow/.style={
-      /tikz/commutative diagrams/rightarrow,
-      /tikz/line width=tikzcdrule},
-    double line/.style={
-      /tikz/double=\pgfkeysvalueof{/tikz/commutative diagrams/background color},
-      /tikz/double distance=\tikzcdfontarrowsdoubledistance},
-    dashed/.style={/tikz/dash pattern=on 0.8ex off 0.4ex},
-    squiggly/.default={pre length=1ex,post length=1ex}}}
+\ProvidesPackage{tikz-cd}[2014/02/28 v0.9 Commutative diagrams with tikz]
+\RequirePackage{tikz}[2013/12/13] % pgf version 3.0.0 required
+\usetikzlibrary{cd}
 
 \endinput
diff --git a/Master/texmf-dist/tex/latex/tikz-cd/tikzlibrarycd.code.tex b/Master/texmf-dist/tex/latex/tikz-cd/tikzlibrarycd.code.tex
new file mode 100644
index 00000000000..f14c162c5a9
--- /dev/null
+++ b/Master/texmf-dist/tex/latex/tikz-cd/tikzlibrarycd.code.tex
@@ -0,0 +1,683 @@
+% Copyright 2011, 2012, 2014 by Florêncio Neves
+%
+% This program is free software: you can redistribute it and/or modify
+% it under the terms of the GNU General Public License as published by
+% the Free Software Foundation, either version 3 of the License, or
+% (at your option) any later version.
+
+% This program is distributed in the hope that it will be useful,
+% but WITHOUT ANY WARRANTY; without even the implied warranty of
+% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+% GNU General Public License for more details.
+ 
+% You should have received a copy of the GNU General Public License
+% along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+\ProvidesFile{tikzlibrarycd.code.tex}[2014/02/28 v0.9 Commutative diagrams with tikz]
+
+\usetikzlibrary{matrix,quotes}
+
+\newif\iftikzcd@mathmode
+
+\def\tikzcdset{\pgfqkeys{/tikz/commutative diagrams}}
+
+\def\tikzcd@x@addto@macro#1#2{%
+  \pgfutil@toks@\expandafter{#1}%
+  \xdef#1{\the\pgfutil@toks@#2}}
+
+\tikzcdset{
+  arrows/.code={\tikzcdset{every arrow/.append style={#1}}},
+  labels/.code={\tikzcdset{every label/.append style={#1}}},
+  cells/.code={\tikzcdset{every cell/.append style={#1}}},
+  diagrams/.code={\tikzcdset{every diagram/.append style={#1}}},
+  to/.code={%
+    \pgfutil@ifundefined{pgf@sh@ns@\tikzcdmatrixname-#1}
+      {\def\tikzcd@ar@target{#1}}
+      {\def\tikzcd@ar@target{\tikzcdmatrixname-#1}}},
+  from/.code={%
+    \pgfutil@ifundefined{pgf@sh@ns@\tikzcdmatrixname-#1}
+      {\def\tikzcd@ar@start{#1}}
+      {\def\tikzcd@ar@start{\tikzcdmatrixname-#1}}},
+  description/.style={
+    /tikz/anchor=center,
+    /tikz/fill=\pgfkeysvalueof{/tikz/commutative diagrams/background color}},
+  phantom/.style={
+    /tikz/draw=none,
+    /tikz/commutative diagrams/labels={
+      /tikz/font=,
+      /tikz/anchor=center}},
+  crossing over/.style={
+    /tikz/preaction={
+      /tikz/draw=\pgfkeysvalueof{/tikz/commutative diagrams/background color},
+      /tikz/arrows=-,
+      /tikz/line width=\pgfkeysvalueof{/tikz/commutative diagrams/crossing over clearance}}},
+  row sep/.code={\tikzcd@sep{row}{#1}},
+  column sep/.code={\tikzcd@sep{column}{#1}},
+  math mode/.is if=tikzcd@mathmode,
+  arrow style/.is choice}
+
+\def\tikzcd@sep#1#2{
+  \pgfkeysifdefined{/tikz/commutative diagrams/#1 sep/#2}%
+    {\pgfkeysgetvalue{/tikz/commutative diagrams/#1 sep/#2}\tikzcd@temp%
+     \pgfkeysalso{/tikz/#1 sep/.expand once=\tikzcd@temp}}%
+    {\pgfkeysalso{/tikz/#1 sep={#2}}}}
+
+% The unknown key handler and direction argument parser
+\tikzcdset{
+  .unknown/.code={%
+    \ifpgfkeysaddeddefaultpath%
+      \c@pgf@counta=0%
+      \c@pgf@countb=0%
+      \let\tikzcd@temp=\tikzcd@parse%
+      \expandafter\tikzcd@temp\pgfkeyscurrentname\relax%
+      \ifx\tikzcd@temp\pgfutil@empty% true if it was a direction parameter
+        \advance\c@pgf@counta by\tikzcd@currentrow%
+        \advance\c@pgf@countb by\tikzcd@currentcolumn%
+        \edef\tikzcd@ar@target{\tikzcdmatrixname-\the\c@pgf@counta-\the\c@pgf@countb}%
+      \else%
+        \pgfqkeys{/tikz}{\pgfkeyscurrentname={#1}}%
+      \fi%
+    \else%
+      \def\pgfutilnext{\pgfkeysvalueof{/handlers/.unknown/.@cmd}#1\pgfeov}\pgfutilnext%
+    \fi}}
+
+\def\tikzcd@parse#1{% parser for arrow direction argument
+  \ifx#1r\advance\c@pgf@countb by1\else%
+   \ifx#1d\advance\c@pgf@counta by1\else%
+    \ifx#1l\advance\c@pgf@countb by-1\else%
+     \ifx#1u\advance\c@pgf@counta by-1\else%
+      \ifx#1\relax\let\tikzcd@temp\pgfutil@empty%
+       \else\let\tikzcd@temp\pgfutil@gobble@until@relax\fi\fi\fi\fi\fi%
+  \tikzcd@temp}
+
+% The `tikzcd' environment
+\def\tikzcd{%
+  \pgfutil@ifnextchar&%
+    {\expandafter\tikzcd@@\expandafter\pgfmatrixnextcell\pgfutil@gobble}%
+    {\tikzcd@@}}
+
+\def\tikzcd@@{\pgfutil@ifnextchar[{\tikzcd@}{\tikzcd@[]}}
+
+\def\tikzcd@[#1]{%
+  \tikzpicture[/tikz/commutative diagrams/.cd,every diagram,#1]%
+  \def\arrow{\tikzcd@arrow}%
+  \def\ar{\tikzcd@arrow}%
+  \def\rar{\tikzcd@xar{r}}%
+  \def\lar{\tikzcd@xar{l}}%
+  \def\dar{\tikzcd@xar{d}}%
+  \def\uar{\tikzcd@xar{u}}%
+  \def\urar{\tikzcd@xar{ur}}%
+  \def\ular{\tikzcd@xar{ul}}%
+  \def\drar{\tikzcd@xar{dr}}%
+  \def\dlar{\tikzcd@xar{dl}}%
+  \global\let\tikzcd@savedpaths\pgfutil@empty%
+  \matrix[/tikz/matrix of \iftikzcd@mathmode math \fi nodes,
+          /tikz/every cell/.append code={\tikzcdset{every cell}},
+          /tikz/commutative diagrams/.cd,every matrix]%
+  \bgroup}
+
+\def\endtikzcd{%
+  \pgfmatrixendrow\egroup%
+  \pgfextra{\global\let\tikzcdmatrixname\tikzlastnode};%
+  \tikzcdset{\the\pgfmatrixcurrentrow-row diagram/.try}%
+  \begingroup%
+    \tikzcd@enablequotes%
+    \tikzcd@patcherrmsg%
+    \tikzcd@savedpaths%
+  \endgroup%
+  \endtikzpicture}
+
+% The arrow commands
+\def\tikzcd@arrow{%
+  \relax%
+  \tikzcd@x@addto@macro\tikzcd@savedpaths{%
+  \noexpand\def\noexpand\tikzcd@currentcolumn{\the\pgfmatrixcurrentcolumn}%
+  \noexpand\def\noexpand\tikzcd@currentrow{\the\pgfmatrixcurrentrow}%
+  \noexpand\def\noexpand\tikzcd@lineno{\the\inputlineno}}%
+  \pgfutil@ifnextchar[{\tikzcd@@arrow}{\tikzcd@ar@old[]}}
+
+\def\tikzcd@@arrow[#1]{\pgfutil@ifnextchar\bgroup{\tikzcd@ar@old[#1]}{\tikzcd@ar@new[#1]}}
+
+\def\tikzcd@ar@new[#1]{% new syntax
+  \pgfutil@g@addto@macro\tikzcd@savedpaths{%
+    \path[/tikz/commutative diagrams/.cd,every arrow,#1]%
+    (\tikzcd@ar@start\tikzcd@startanchor) to (\tikzcd@ar@target\tikzcd@endanchor); }}
+
+\def\tikzcd@ar@old[#1]#2{% old syntax
+  \pgfutil@g@addto@macro\tikzcd@savedpaths{%
+    \path[/tikz/commutative diagrams/.cd,every arrow,{#2},#1] (\tikzcd@ar@start\tikzcd@startanchor) to }%
+  \pgfutil@ifnextchar[{\tikzcd@ar@getlabel}{\pgfutil@ifnextchar\bgroup{\tikzcd@ar@getlabel[]}{\tikzcd@ar@final}}}
+
+\def\tikzcd@ar@getlabel[#1]#2{%
+  \pgfutil@g@addto@macro\tikzcd@savedpaths{%
+    node[/tikz/commutative diagrams/.cd,every label,#1]{\tikzcd@mathmaybe{#2}}}%
+  \pgfutil@ifnextchar[{\tikzcd@ar@getlabel}{\pgfutil@ifnextchar\bgroup{\tikzcd@ar@getlabel[]}{\tikzcd@ar@final}}}
+
+\def\tikzcd@ar@final{%
+  \pgfutil@g@addto@macro\tikzcd@savedpaths{(\tikzcd@ar@target\tikzcd@endanchor); }}
+
+\def\tikzcd@xar#1{\relax\pgfutil@ifnextchar[{\tikzcd@@xar{#1}}{\tikzcd@arrow[]{#1}}}
+
+\def\tikzcd@@xar#1[#2]{\tikzcd@arrow[#2]{#1}}
+
+\def\tikzcd@mathmaybe#1{\iftikzcd@mathmode$\relax #1$\else#1\fi}
+
+\def\tikzcd@ar@target{\tikzcdmatrixname-\tikzcd@currentrow-\tikzcd@currentcolumn}
+\def\tikzcd@ar@start{\tikzcdmatrixname-\tikzcd@currentrow-\tikzcd@currentcolumn}
+
+% `quotes' library support
+\def\tikzcd@passquotes#1{\tikzset{every to/.append style={#1}}}
+
+\def\tikzcd@enablequotes{%
+  \pgfkeys{
+    /handlers/first char syntax/the character "/.initial=\tikzcd@passquotes,
+    /tikz/edge quotes mean={%
+      edge node={node [/tikz/commutative diagrams/.cd,every label,##2]{\tikzcd@mathmaybe{##1}}}}}}
+
+% Improve error messages
+\def\tikzcd@patcherrmsg{%
+  \let\tikzcd@errmessage\errmessage%
+  \def\errmessage##1{\tikzcd@errmessage{##1^^J...^^Jl.\tikzcd@lineno\space%
+      I think the culprit is a tikzcd arrow in cell \tikzcd@currentrow-\tikzcd@currentcolumn}}}
+      
+% `start anchor', `end anchor', and `shift' keys
+\def\tikzcd@setanchor#1[#2]#3\relax{%
+  \ifx\relax#2\relax\else%
+    \tikzcdset{@#1transform/.append style={#2},@shiftabletopath}%
+  \fi%
+  \ifx\relax#3\relax%
+    \pgfutil@namelet{tikzcd@#1anchor}{pgfutil@empty}%
+  \else%
+    \pgfutil@namedef{tikzcd@#1anchor}{.#3}%
+  \fi}
+
+\tikzcdset{
+  @shiftabletopath/.style={
+    /tikz/execute at begin to={%
+      \begingroup%
+        \def\tikz@tonodes{coordinate[pos=0,commutative diagrams/@starttransform/.try](tikzcd@nodea) %
+                          coordinate[pos=1,commutative diagrams/@endtransform/.try](tikzcd@nodeb)}%
+        \path (\tikztostart) \tikz@to@path;%
+      \endgroup%
+      \def\tikztostart{tikzcd@nodea}%
+      \def\tikztotarget{tikzcd@nodeb}%
+      \tikzset{insert path={(tikzcd@nodea)}}},
+    /tikz/commutative diagrams/@shiftabletopath/.code={}},
+  start anchor/.code={%
+    \pgfutil@ifnextchar[{\tikzcd@setanchor{start}}{\tikzcd@setanchor{start}[]}#1\relax},%]
+  end anchor/.code={%
+    \pgfutil@ifnextchar[{\tikzcd@setanchor{end}}{\tikzcd@setanchor{end}[]}#1\relax},%]
+  start anchor=,
+  end anchor=,
+  shift left/.style={
+    /tikz/commutative diagrams/@shiftabletopath,
+    /tikz/execute at begin to={%
+      \pgfpointnormalised{%
+        \pgfpointdiff{\pgfpointanchor{tikzcd@nodeb}{center}}{\pgfpointanchor{tikzcd@nodea}{center}}}%
+      \pgfgetlastxy{\tikzcd@x}{\tikzcd@y}%
+      \pgfmathparse{#1}%
+      \ifpgfmathunitsdeclared\else
+        \pgfmathparse{\pgfmathresult*\pgfkeysvalueof{/tikz/commutative diagrams/shift left/.@def}}
+      \fi
+      \coordinate (tikzcd@nodea) at ([shift={(\pgfmathresult*\tikzcd@y,-\pgfmathresult*\tikzcd@x)}]tikzcd@nodea);%
+      \coordinate (tikzcd@nodeb) at ([shift={(\pgfmathresult*\tikzcd@y,-\pgfmathresult*\tikzcd@x)}]tikzcd@nodeb);%
+      \tikzset{insert path={(tikzcd@nodea)}}}},
+  shift right/.style={
+    /tikz/commutative diagrams/shift left={-(#1)}},
+  transform nodes/.style={
+    /tikz/commutative diagrams/@shiftabletopath,
+    /tikz/commutative diagrams/@starttransform/.append style={#1},
+    /tikz/commutative diagrams/@endtransform/.append style={#1}},
+  shift/.style={
+    /tikz/shift={#1},% we need this for labels to receive a shift
+    /tikz/commutative diagrams/transform nodes={/tikz/shift={#1}}},
+  xshift/.style={
+    /tikz/xshift={#1},
+    /tikz/commutative diagrams/transform nodes={/tikz/xshift={#1}}},
+  yshift/.style={
+    /tikz/yshift={#1},
+    /tikz/commutative diagrams/transform nodes={/tikz/yshift={#1}}}}
+
+% pgfmath functions to obtain math fontdimens
+\pgfutil@ifluatex
+
+  \directlua{tex.enableprimitives('tikzcd@', {'Umathaxis', 'Umathfractionrule'})}
+
+  \pgfmathdeclarefunction{axis_height}{0}{%
+    \begingroup%
+      $\relax$% update fontdimens
+      \pgfmathreturn\the\tikzcd@Umathaxis\textstyle%
+    \endgroup}
+
+  \pgfmathdeclarefunction{rule_thickness}{0}{%
+    \begingroup%
+      $\relax$%
+      \pgfmathreturn\the\tikzcd@Umathfractionrule\textstyle%
+    \endgroup}
+
+\else% if using (pdf)tex
+
+  \pgfmathdeclarefunction{axis_height}{0}{%
+    \begingroup%
+      $\relax$% update fontdimens
+      \pgfmathreturn\the\fontdimen22\textfont2%
+    \endgroup}
+
+  \pgfmathdeclarefunction{rule_thickness}{0}{%
+    \begingroup%
+      $\relax$%
+      \pgfmathreturn\the\fontdimen8\textfont3%
+    \endgroup}
+
+\fi
+
+% The shape used inside matrices
+\pgfdeclareshape{asymmetrical rectangle} {
+  \inheritsavedanchors[from={rectangle}]
+  \inheritanchor[from={rectangle}]{base}
+  \inheritanchor[from={rectangle}]{north}
+  \inheritanchor[from={rectangle}]{south}
+  \inheritanchor[from={rectangle}]{base west}
+  \inheritanchor[from={rectangle}]{north west}
+  \inheritanchor[from={rectangle}]{south west}
+  \inheritanchor[from={rectangle}]{base east}
+  \inheritanchor[from={rectangle}]{north east}
+  \inheritanchor[from={rectangle}]{south east}
+  \inheritanchor[from={rectangle}]{mid}
+  \inheritanchor[from={rectangle}]{mid west}
+  \inheritanchor[from={rectangle}]{mid east}
+  \inheritbackgroundpath[from={rectangle}]
+  \anchor{center}{\pgf@anchor@rectangle@center\pgfmathsetlength\pgf@y%
+    {\pgfkeysvalueof{/tikz/commutative diagrams/center yshift}}}
+  \anchor{west}{\pgf@anchor@rectangle@west\pgfmathsetlength\pgf@y%
+    {\pgfkeysvalueof{/tikz/commutative diagrams/center yshift}}}
+  \anchor{east}{\pgf@anchor@rectangle@east\pgfmathsetlength\pgf@y%
+    {\pgfkeysvalueof{/tikz/commutative diagrams/center yshift}}}
+  \anchor{real center}{\pgf@anchor@rectangle@center}
+  \anchor{real west}{\pgf@anchor@rectangle@west}
+  \anchor{real east}{\pgf@anchor@rectangle@east}
+  \anchorborder{%
+    \pgfmathsetlength\pgfutil@tempdima%
+      {\pgfkeysvalueof{/tikz/commutative diagrams/center yshift}}%
+    \pgf@xb=\pgf@x% xb/yb is target
+    \pgf@yb=\pgf@y%
+    \southwest%
+    \pgf@xa=\pgf@x% xa/ya is se
+    \pgf@ya=\pgf@y%
+    \northeast%
+    \advance\pgf@x by-\pgf@xa%
+    \advance\pgf@y by-\pgf@ya%
+    \pgf@xc=.5\pgf@x% x/y is half width/height
+    \pgf@yc=.5\pgf@y%
+    \advance\pgf@xa by\pgf@xc% xa/ya becomes center
+    \advance\pgf@ya by\pgf@yc%
+    \ifdim\pgf@yb>0pt%
+      \northeast%
+      \pgf@yc=\pgf@y%
+      \advance\pgf@yc by-\pgfutil@tempdima%
+    \else%
+      \southwest%
+      \pgf@yc=-\pgf@y%
+      \advance\pgf@yc by\pgfutil@tempdima%
+    \fi
+    \edef\pgf@marshal{%
+      \noexpand\pgfpointborderrectangle
+      {\noexpand\pgfqpoint{\the\pgf@xb}{\the\pgf@yb}}
+      {\noexpand\pgfqpoint{\the\pgf@xc}{\the\pgf@yc}}%
+    }%
+    \pgf@process{\pgf@marshal}%
+    \advance\pgf@x by\pgf@xa%
+    \advance\pgf@y by\pgfutil@tempdima%
+  }%
+}%
+
+% Computer modern arrow tips
+\pgfdeclarearrow{
+  name=cm to,
+  parameters={\ifpgfarrowharpoon h\fi},
+  setup code={%
+    \pgfarrowssetbackend{-5.8\pgflinewidth}%
+    \pgfarrowssettipend{0.5\pgflinewidth}},
+  drawing code={
+  \pgfsetdash{}{+0pt}%
+  \pgfsetroundcap%
+  \pgfsetroundjoin%
+  \pgfpathmoveto{\pgfqpoint{-5.3\pgflinewidth}{6\pgflinewidth}}%
+  \pgfpathcurveto%
+    {\pgfqpoint{\ifpgfarrowharpoon-4\else-4.5\fi\pgflinewidth}{\ifpgfarrowharpoon3\else2.5\fi\pgflinewidth}}%
+    {\pgfqpoint{\ifpgfarrowharpoon-2\else-2.133\fi\pgflinewidth}{\ifpgfarrowharpoon1\else0.6\fi\pgflinewidth}}%
+    {\pgfpointorigin}%
+  \ifpgfarrowharpoon\else%
+    \pgfpathcurveto%
+      {\pgfqpoint{-2.133\pgflinewidth}{-0.6\pgflinewidth}}%
+      {\pgfqpoint{-4.5\pgflinewidth}{-2.5\pgflinewidth}}%
+      {\pgfqpoint{-5.3\pgflinewidth}{-6\pgflinewidth}}%
+  \fi%
+  \pgfusepathqstroke}}
+
+\pgfdeclarearrow{
+  name=cm implies,
+  setup code={%
+    \pgfarrowssetbackend{\pgfinnerlinewidth\pgf@x=0.25\pgf@x\advance\pgf@x by-0.792\pgflinewidth}%
+    \pgfarrowssettipend{\pgfinnerlinewidth\pgf@x=-0.25\pgf@x\advance\pgf@x by1.094\pgflinewidth}},
+  drawing code={%
+    \pgfutil@tempdima\pgflinewidth%
+    \pgfsetlinewidth{.5\pgflinewidth-.5*\pgfinnerlinewidth}%
+    \pgfsetdash{}{+0pt}%
+    \pgfsetroundcap%
+    \pgfsetroundjoin%
+    \pgfpathmoveto{\pgfqpoint{-0.542\pgfutil@tempdima}{1.1\pgfutil@tempdima}}%
+    \pgfpathcurveto%
+      {\pgfqpoint{-0.2\pgfutil@tempdima}{0.5\pgfutil@tempdima}}%
+      {\pgfqpoint{0.29\pgfutil@tempdima}{0.114\pgfutil@tempdima}}%
+      {\pgfqpoint{0.844\pgfutil@tempdima}{0pt}}%
+    \pgfpathcurveto%
+      {\pgfqpoint{0.29\pgfutil@tempdima}{-0.114\pgfutil@tempdima}}%
+      {\pgfqpoint{-0.2\pgfutil@tempdima}{-0.5\pgfutil@tempdima}}%
+      {\pgfqpoint{-0.542\pgfutil@tempdima}{-1.1\pgfutil@tempdima}}%
+    \pgfusepathqstroke}}
+
+\pgfdeclarearrow{
+  name=cm bold to,
+  setup code={
+    \pgfarrowssetbackend{-4.035\pgflinewidth}
+    \pgfarrowssettipend{0.5\pgflinewidth}},
+  drawing code={%
+    \pgfutil@tempdima=0.667\pgflinewidth%
+    \pgfsetdash{}{+0pt}
+    \pgfsetroundcap
+    \pgfsetroundjoin
+    \pgfpathmoveto{\pgfqpoint{-5.3\pgfutil@tempdima}{6\pgfutil@tempdima}}
+    \pgfpathcurveto
+      {\pgfqpoint{-4.5\pgfutil@tempdima}{2.5\pgfutil@tempdima}}
+      {\pgfqpoint{-2.133\pgfutil@tempdima}{0.6\pgfutil@tempdima}}
+      {\pgfpointorigin}
+    \pgfpathcurveto
+      {\pgfqpoint{-2.133\pgfutil@tempdima}{-0.6\pgfutil@tempdima}}
+      {\pgfqpoint{-4.5\pgfutil@tempdima}{-2.5\pgfutil@tempdima}}
+      {\pgfqpoint{-5.3\pgfutil@tempdima}{-6\pgfutil@tempdima}}
+    \pgfusepathqstroke}}
+
+\pgfdeclarearrow{,
+  name=cm bar,
+  setup code={%
+    \pgfarrowssetbackend{-0.5\pgflinewidth}%
+    \pgfarrowssettipend{0.5\pgflinewidth}},
+  drawing code={%
+    \pgfsetdash{}{+0pt}%
+    \pgfsetroundcap%
+    \pgfpathmoveto{\pgfqpoint{0pt}{-4.1\pgflinewidth}}%
+    \pgfpathlineto{\pgfqpoint{0pt}{4.1\pgflinewidth}}%
+    \pgfusepathqstroke}}
+
+\pgfdeclarearrow{
+  name=cm left hook,
+  setup code={%
+    \pgfarrowssetbackend{-0.5\pgflinewidth}%
+    \pgfarrowssettipend{3.5\pgflinewidth}},
+  drawing code={%
+    \pgfsetdash{}{+0pt}%
+    \pgfsetroundcap%
+    \pgfpathmoveto{\pgfqpoint{0pt}{4.8\pgflinewidth}}%
+    \pgfpathcurveto%
+      {\pgfqpoint{4\pgflinewidth}{4.8\pgflinewidth}}%
+      {\pgfqpoint{4\pgflinewidth}{0pt}}%
+      {\pgfpointorigin}%
+    \pgfusepathqstroke}}
+
+\pgfdeclarearrow{
+  name=cm *,
+  parameters={\ifpgfarrowopen o\fi},
+  setup code={
+    \pgfarrowssetbackend{-.5\pgflinewidth}
+    \pgfarrowssettipend{7.167\pgflinewidth}},
+  drawing code={
+    \pgfpathcircle{\pgfqpoint{3.333\pgflinewidth}{0pt}}{3.333\pgflinewidth}
+    \ifpgfarrowopen\pgfusepathqstroke\else\pgfusepathqfillstroke\fi}}
+
+\pgfdeclarearrow{
+  name=lm left hook,
+  setup code={
+    \pgfarrowssetbackend{+-2\pgflinewidth}%
+    \pgfarrowssettipend{+3.5\pgflinewidth}},
+  drawing code={
+    \pgfsetdash{}{+0pt}
+    \pgfsetroundcap
+    \pgfpathmoveto{\pgfqpoint{+-1.5\pgflinewidth}{+7\pgflinewidth}}
+    \pgfpathcurveto
+      {\pgfqpoint{+4.3\pgflinewidth}{+7\pgflinewidth}}
+      {\pgfqpoint{+4.3\pgflinewidth}{+\pgflinewidth}}
+      {\pgfpointorigin}
+    \pgfusepathqstroke}}
+
+\pgfdeclarearrow{
+  name=lm bar,
+  setup code={%
+    \pgfarrowssetbackend{+-0.5\pgflinewidth}%
+    \pgfarrowssettipend{+0.5\pgflinewidth}},
+  drawing code={%
+    \pgfsetdash{}{+0pt}%
+    \pgfsetroundcap%
+    \pgfpathmoveto{\pgfqpoint{0pt}{-6\pgflinewidth}}%
+    \pgfpathlineto{\pgfqpoint{0pt}{6\pgflinewidth}}%
+    \pgfusepathqstroke}}
+
+\pgfkeys{
+  cm left to/.tip={cm to[left]},
+  cm right to/.tip={cm to[right]},
+  cm right hook/.tip={cm left hook[swap]},
+  cm double to/.tip={cm to[sep=0pt -2.8]cm to},
+  cm to reversed/.tip={cm to[reversed]},
+  cm o/.tip={cm *[open]},
+  cm |/.tip={cm bar}}%|
+
+% The `Glyph' meta arrow tip
+\pgfqkeys{/pgf/arrow keys}{
+  glyph math command/.code={\pgfarrowsaddtooptions{\def\tikzcd@glyph{$\csname #1\endcsname$}}},
+  glyph axis/.code={\pgfarrowsaddtooptions{\pgfmathsetlengthmacro\tikzcd@glyph@axis{#1}}},
+  glyph length/.code={\pgfarrowsaddtooptions{\pgfmathsetlengthmacro\tikzcd@glyph@len{#1}}},
+  glyph shorten/.code={\pgfarrowsaddtooptions{\pgfmathsetlengthmacro\tikzcd@glyph@shorten{#1}}}}
+
+\pgfdeclarearrow{
+  name=Glyph,
+  cache=false,
+  bending mode=none,
+  parameters={\tikzcd@glyph@len,\tikzcd@glyph@shorten},
+  setup code={
+    \pgfarrowssettipend{\tikzcd@glyph@len\advance\pgf@x by\tikzcd@glyph@shorten}},
+  defaults={
+    glyph axis=axis_height,
+    glyph length=+0.9ex,
+    glyph shorten=+-0.1ex},
+  drawing code={
+    \pgfpathrectangle{\pgfpoint{+0pt}{+-1ex}}{\pgfpoint{+\tikzcd@glyph@len}{+2ex}}%
+    \pgfusepathqclip%
+    \pgftransformxshift{+\tikzcd@glyph@len}%
+    \pgftransformyshift{+-\tikzcd@glyph@axis}%
+    \pgftext[right,base]{\tikzcd@glyph}}}
+
+% ConTeXt-specific stuff
+\pgfutil@IfUndefined{starttikzpicture}{}{%
+  \def\starttikzcd{\tikzcd}%
+  \def\stoptikzcd{\endtikzcd}}
+
+% Generic arrow tip selection styles
+\tikzcdset{
+  arrow style/.initialize/.style={
+    double line/.code={\tikzset{double=\pgfkeysvalueof{/tikz/commutative diagrams/background color}}},
+    squiggly/.default={},
+    tikzcd to/.tip={>},
+    tikzcd bar/.tip={cm bar},
+    tikzcd left hook/.tip={cm left hook},
+    tikzcd right hook/.tip={tikzcd left hook[swap]},
+    tikzcd left to/.tip={tikzcd to[harpoon]},
+    tikzcd right to/.tip={tikzcd left to[swap]},
+    tikzcd double to/.tip={tikzcd to[]tikzcd to},
+    tikzcd to reversed/.tip={tikzcd to[reversed]},
+    tikzcd cap/.tip={},
+    tikzcd implies cap/.tip={},
+    tikzcd implies/.tip={cm implies}},
+  no tail/.code={\pgfsetarrowsstart{tikzcd cap}},
+  to head/.code={\pgfsetarrowsend{tikzcd to}},
+  maps to/.code={\pgfsetarrowsstart{tikzcd bar}},
+  hook/.code={\pgfsetarrowsstart{tikzcd right hook}},
+  hook'/.code={\pgfsetarrowsstart{tikzcd left hook}},
+  harpoon/.code={\pgfsetarrowsend{tikzcd left to}},
+  harpoon'/.code={\pgfsetarrowsend{tikzcd right to}},
+  two heads/.code={\pgfsetarrowsend{tikzcd double to}},
+  tail/.code={\pgfsetarrowsstart{tikzcd to reversed}},
+  rightarrow/.code={\pgfsetarrows{tikzcd cap-tikzcd to}},
+  Rightarrow/.code={\tikzcdset{double line}\pgfsetarrows{tikzcd implies cap-tikzcd implies}},
+  leftarrow/.code={\pgfsetarrows{tikzcd to-tikzcd cap}},
+  Leftarrow/.code={\tikzcdset{double line}\pgfsetarrows{tikzcd implies-tikzcd implies cap}},
+  leftrightarrow/.code={\pgfsetarrows{tikzcd to-tikzcd to}},
+  Leftrightarrow/.code={\tikzcdset{double line}\pgfsetarrows{tikzcd implies-tikzcd implies}},
+  mapsto/.code={\pgfsetarrows{tikzcd bar-tikzcd to}},
+  mapsfrom/.code={\pgfsetarrows{tikzcd to-tikzcd bar}},
+  hookrightarrow/.code={\pgfsetarrows{tikzcd right hook-tikzcd to}},
+  hookleftarrow/.code={\pgfsetarrows{tikzcd to-tikzcd left hook}},
+  rightharpoonup/.code={\pgfsetarrows{tikzcd cap-tikzcd left to}},
+  rightharpoondown/.code={\pgfsetarrows{tikzcd cap-tikzcd right to}},
+  leftharpoonup/.code={\pgfsetarrows{tikzcd right to-tikzcd cap}},
+  leftharpoondown/.code={\pgfsetarrows{tikzcd left to-tikzcd cap}},
+  rightarrowtail/.code={\pgfsetarrows{tikzcd to reversed-tikzcd to}},
+  leftarrowtail/.code={\pgfsetarrows{tikzcd to-tikzcd to reversed}},
+  twoheadrightarrow/.code={\pgfsetarrows{tikzcd cap-tikzcd double to}},
+  twoheadleftarrow/.code={\pgfsetarrows{tikzcd double to-tikzcd cap}},
+  no head/.code={\pgfsetarrowsend{tikzcd cap}},
+  dash/.code={\pgfsetarrows{tikzcd cap-tikzcd cap}},
+  dashrightarrow/.code={\tikzcdset{rightarrow,dashed}},
+  dashleftarrow/.code={\tikzcdset{leftarrow,dashed}},
+  equal/.code={\tikzcdset{double line}\pgfsetarrows{tikzcd implies cap-tikzcd implies cap}},
+  equals/.code={\tikzcdset{equal}},
+  rightsquigarrow/.code={\tikzcdset{rightarrow,squiggly}},
+  leftsquigarrow/.code={\tikzcdset{leftarrow,squiggly}},
+  leftrightsquigarrow/.code={\tikzcdset{leftrightarrow,squiggly}},
+  squiggly/.code={%
+    \pgfutil@ifundefined{tikz@library@decorations.pathmorphing@loaded}%
+      {\pgfutil@packageerror{tikz-cd}{You need to say %
+      \string\usetikzlibrary{decorations.pathmorphing} to use squiggly arrows}{}}{}%
+    \pgfkeysalso{
+      /tikz/decorate,
+      /tikz/decoration={
+        zigzag,
+        segment length=9.25\pgflinewidth,
+        amplitude=1.9\pgflinewidth,
+        post=lineto, post length=6\pgflinewidth,
+        pre=lineto, pre length=6\pgflinewidth,
+        #1}}}}
+
+% The `Computer Modern' arrow style
+\pgfkeysdef{/tikz/commutative diagrams/arrow style/Computer Modern}{%
+  \tikzcdset{
+    arrow style/.initialize,
+    double line/.append code={\tikzset{double distance=3.85\pgflinewidth}},
+    tikzcd to/.tip={cm to},
+    tikzcd double to/.tip={cm double to},
+    dashed/.style={/tikz/dash pattern={on 7\pgflinewidth off 4\pgflinewidth}}}}
+
+% The `Latin Modern' arrow style
+\pgfkeysdef{/tikz/commutative diagrams/arrow style/Latin Modern}{%
+  \tikzcdset{
+    arrow style=Computer Modern,
+    tikzcd left hook/.tip={lm left hook},
+    tikzcd bar/.tip={lm bar}}}
+
+% The `math font' arrow style
+%
+% The method used to guess the correct value of `double distance'
+% inside the `double line' style is not robust at all.  If it fails,
+% set
+%   \tikzcdset{double line/.append style={double distance=2*rule_thickness}}
+% and find the correct value for `double distance' by trial and error
+% (or measure the distance between the \Rightarrow stems in a font
+% editor).
+\pgfkeysdef{/tikz/commutative diagrams/arrow style/math font}{%
+  \pgfutil@IfUndefined{mapsfrom}
+    {\def\tikzcd@mapsfrom{\pgfpicture\pgfsetbaseline{+0pt}\pgftransformxscale{-1}\pgftext[base]{$\mapsto$}\endpgfpicture}}
+    {\def\tikzcd@mapsfrom{\mapsfrom}}
+  \tikzcdset{
+    arrow style/.initialize,
+    tikzcd to/.tip={Glyph[glyph math command=rightarrow]},
+    tikzcd cap/.tip={Glyph[glyph math command=leftarrow]},
+    tikzcd to reversed/.tip={Glyph[glyph math command=leftarrowtail]},
+    tikzcd bar/.tip={Glyph[glyph math command=tikzcd@mapsfrom]},
+    tikzcd left hook/.tip={Glyph[glyph math command=hookleftarrow]},
+    tikzcd right hook/.tip={Glyph[glyph math command=hookleftarrow, swap]},
+    tikzcd implies/.tip={Glyph[glyph math command=Rightarrow, glyph length=1.2ex]},
+    tikzcd implies cap/.tip={Glyph[glyph math command=Leftarrow]},
+    tikzcd double to/.tip={Glyph[glyph math command=twoheadrightarrow, glyph length=1.4ex]},
+    tikzcd left to/.tip={Glyph[glyph math command=rightharpoonup]},
+    tikzcd right to/.tip={Glyph[glyph math command=rightharpoonup,swap]},
+    double line/.append code={\tikzset{double distance={2*(height("$=$")-axis_height-rule_thickness)}}},
+    dashed/.code={\tikzset{dash pattern=on 0.8ex off 0.4ex, dash phase=0.8ex}},
+    squiggly/.default={pre length=1ex, post length=1ex}}}
+
+% The `arrows.meta' arrow style
+\pgfkeysdef{/tikz/commutative diagrams/arrow style/arrows.meta}{%
+  \pgfutil@ifundefined{tikz@library@arrows.meta@loaded}%
+    {\pgfutil@packageerror{tikz-cd}{You need to say %
+    \string\usetikzlibrary{arrows.meta} to use the `arrows.meta' arrow style}{}}{}%
+  \tikzcdset{
+    arrow style/.initialize,
+    double line/.append style={/tikz/double equal sign distance},
+    tikzcd bar/.tip={Bar},
+    tikzcd left hook/.tip={Hooks[harpoon]},
+    tikzcd implies/.tip={Implies},
+    dashed/.style={/tikz/dashed}}}
+
+% The `tikz' arrow style
+\pgfkeysdef{/tikz/commutative diagrams/arrow style/tikz}{%
+  \pgfutil@ifundefined{tikz@library@arrows@loaded}%
+    {\pgfutil@packageerror{tikz-cd}{You need to say %
+    \string\usetikzlibrary{arrows} to use the `tikz' arrow style}{}}{}%
+  \tikzcdset{
+    arrow style/.initialize,
+    double line/.append style={/tikz/double equal sign distance},
+    tikzcd bar/.tip={|},%|
+    tikzcd left hook/.tip={left hook},
+    tikzcd left to/.tip={left to},
+    tikzcd implies/.tip={implies},
+    dashed/.style={/tikz/dashed}}}
+
+% Default settings
+\tikzcdset{
+  every arrow/.style={
+    /tikz/draw,
+    /tikz/line width=rule_thickness,
+    /tikz/commutative diagrams/rightarrow},
+  every label/.style={
+    /tikz/auto,
+    /tikz/font=\everymath\expandafter{\the\everymath\scriptstyle},
+    /tikz/inner sep=+0.5ex},
+  every cell/.style={
+    /tikz/shape={asymmetrical rectangle},
+    /tikz/inner xsep=+1ex,
+    /tikz/inner ysep=+0.85ex},
+  every matrix/.style={/tikz/inner sep=+0pt},
+  every diagram/.style={
+    /tikz/commutative diagrams/row sep=normal,
+    /tikz/commutative diagrams/column sep=normal,
+    /tikz/baseline=+0pt},
+  arrow style=Computer Modern,
+  1-row diagram/.style={/tikz/baseline=(\tikzcdmatrixname.base)},
+  math mode=true,
+  center yshift/.initial=axis_height,
+  row sep/huge/.initial=+3.6em,
+  row sep/large/.initial=+2.7em,
+  row sep/normal/.initial=+1.8em,
+  row sep/scriptsize/.initial=+1.35em,
+  row sep/small/.initial=+0.9em,
+  row sep/tiny/.initial=+0.45em,
+  column sep/huge/.initial=+4.8em,
+  column sep/large/.initial=+3.6em,
+  column sep/normal/.initial=+2.4em,
+  column sep/scriptsize/.initial=+1.8em,
+  column sep/small/.initial=+1.2em,
+  column sep/tiny/.initial=+0.6em,
+  crossing over clearance/.initial=+1.5ex,
+  shift left/.default=+0.56ex,
+  shift right/.default=1,
+  background color/.initial=white}
+
+\endinput