%%
%% This is file `spalign.sty',
%% generated with the docstrip utility.
%%
%% The original source files were:
%%
%% spalign.dtx  (with options: `package')
%% 
%% This is a generated file.
%% 
%% Copyright (C) 2016 by Joseph Rabinoff <rabinoff@math.gatech.edu>
%% 
%% This file may be distributed and/or modified under the conditions of
%% the LaTeX Project Public License, either version 1.3 of this license
%% or (at your option) 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.
%% 
\NeedsTeXFormat{LaTeX2e}[2005/12/01]
\ProvidesPackage{spalign}
    [2016/10/05 aligns delimited by spaces]

\makeatletter

\RequirePackage{kvoptions}
\SetupKeyvalOptions{family=spalign,prefix=spalign@}

\DeclareStringOption[()]{delims}
\DeclareStringOption[\{.]{sysdelims}
\DeclareStringOption[\,]{matdelimskip}
\DeclareStringOption[]{vecdelimskip}
\DeclareStringOption[\,]{sysdelimskip}
\DeclareStringOption[1pt]{systabspace}
\DeclareStringOption[;]{endofrow}
\DeclareStringOption[,]{separator}

\ProcessLocalKeyvalOptions*

\def\spaligndelims#1#2{%
  \def\spalign@leftdelim{#1}\def\spalign@rightdelim{#2}}
\expandafter\spaligndelims\spalign@delims
\def\spalignsysdelims#1#2{%
  \def\spalign@sysleftdelim{#1}\def\spalign@sysrightdelim{#2}}
\expandafter\spalignsysdelims\spalign@sysdelims
\let\spalignmatdelimskip=\spalign@matdelimskip
\let\spalignvecdelimskip=\spalign@vecdelimskip
\let\spalignsysdelimskip=\spalign@sysdelimskip
\newdimen\spalignsystabspace
\spalignsystabspace=\spalign@systabspace
\let\spalignendofrow=\spalign@endofrow
\let\spalignseparator=\spalign@separator
\def\spalignendline{\\}
\def\spalignaligntab{&}
\begingroup
\def\\{\global\let\spalign@space= } \\ %
\endgroup
\def\spalign@end{\spalign@end}
\def\spalign@bgroup{\bgroup}
\newcount\spalign@curcols
\newif\ifspalign@ignorespaces
\newif\ifspalign@saw@space
\def\spalign@gobble@next{%
  \afterassignment\spalign@gobble@spaces\let\spalign@atoken= }
\def\spalign@check@space{%
  \ifx\spalign@nexttok\spalign@space%
    \spalign@saw@spacetrue%
    \let\spalign@next=\spalign@gobble@next%
  \else%
    \let\spalign@next=\spalign@parsetoks%
  \fi%
  \spalign@next%
  }
\def\spalign@gobble@spaces{%
  \futurelet\spalign@nexttok\spalign@check@space}
\def\spalign@append#1{%
  \begingroup%
  \toks255={#1}%
  \xdef\spalign@settok{%
    \spaligntoks={\the\spaligntoks\the\toks255}}%
  \endgroup%
  \spalign@settok%
  }
\def\spalign@addcol{%
  \expandafter\spalign@append\expandafter{\spalignaligntab}%
  \advance\spalign@curcols by 1 %
  }
\def\spalign@endrow{%
  \advance\spalign@curcols by 1 %
  \ifnum\spalign@curcols>\spalignmaxcols%
    \spalignmaxcols=\spalign@curcols%
  \fi%
  \spalign@curcols=0%
  \spalign@ignorespacestrue%
  }
\def\spalign@normaltok{%
  \ifspalign@saw@space%
    \ifspalign@ignorespaces%
    \else%
      \spalign@addcol%
    \fi%
  \fi%
  \spalign@ignorespacesfalse%
  }
\def\spalign@parsetoks#1{%
  \let\spalign@next=\spalign@gobble@spaces%
  \def\spalign@arg{#1}%
  \ifx\spalign@nexttok\bgroup%
    \spalign@normaltok%
    \ifx\spalign@arg\spalign@bgroup%
      \spalign@append{#1}%
    \else%
      \spalign@append{{#1}}%
    \fi%
  \else%
    \ifx\spalign@arg\spalignendofrow%
      \expandafter\spalign@append\expandafter{\spalignendline}%
      \spalign@endrow%
    \else%
      \ifx\spalign@arg\spalignseparator%
        \spalign@addcol%
        \spalign@ignorespacestrue%
      \else%
        \ifx\spalign@arg\spalign@end%
          \let\spalign@next=\relax%
          \spalign@endrow%
        \else%
          \spalign@normaltok%
          \spalign@append{#1}%
        \fi%
      \fi%
    \fi%
  \fi%
  \spalign@saw@spacefalse%
  \spalign@next%
  }
\def\spalign@process{%
  \spaligntoks={}%
  \spalignmaxcols=0%
  \spalign@curcols=0%
  \spalign@ignorespacestrue%
  \spalign@saw@spacefalse%
  \spalign@gobble@spaces%
  }
\newif\ifspalign@star
\def\spalign@gobble@one#1{}

\def\spalign@def@star#1{%
  \def\spalign@cmd{#1}%
  \edef\spalign@cmd@x{%
    \csname\expandafter\spalign@gobble@one\string#1@x\endcsname}%
  \edef\spalign@cmd@star{%
    \csname\expandafter\spalign@gobble@one\string#1@star\endcsname}%
  \expandafter\let\spalign@cmd@x=\relax
  \expandafter\edef\spalign@cmd{%
    \futurelet\noexpand\spalign@nexttok\spalign@cmd@x}%
  \def\spalign@mkcmd##1{%
    \expandafter\def\spalign@cmd@x{%
      \ifx\spalign@nexttok*%
        \spalign@startrue%
        \let\spalign@next=\spalign@gobble@one%
      \else%
        \spalign@starfalse%
        \def\spalign@next{}%
      \fi%
      \expandafter##1\spalign@next%
      }%
    }%
  \expandafter\spalign@mkcmd\spalign@cmd@star%
  \expandafter\def\spalign@cmd@star%
  }
\newtoks\spaligntoks
\newcount\spalignmaxcols
\def\spalignrun#1#2{%
  \begingroup%
  \spalign@process#2\spalign@end%
  %\showthe\spaligntoks%  For debugging
  #1%
  \endgroup%
  }
\def\spalignenv#1#2{%
  \spalignrun{%
    #1%
    \the\spaligntoks%
    #2%
    }%
  }
\def\spalignretokenize#1{%
  \begingroup%
  \spalign@process#1\spalign@end%
  \expandafter\endgroup\the\spaligntoks%
  }
\def\spaligntabular#1#2{%
  \begin{tabular}{#1}\spalignretokenize{#2}\end{tabular}}
\def\spalign@maybedelim#1#2#3{%
  \spalignenv%
    {\ifspalign@star\else\left\spalign@leftdelim#3\fi#1}%
    {#2\ifspalign@star\else#3\right\spalign@rightdelim\fi}%
  }
\spalign@def@star\spalignarray#1{%
  \spalign@maybedelim%
    {\begin{array}{#1}}%
    {\end{array}}%
    {\hskip-\arraycolsep\spalignmatdelimskip}%
  }
\spalign@def@star\spalignvector{}
\renewcommand\spalignvector@star[2][c]{%
  \begingroup%
  \def\spalignaligntab{\\}%
  \spalign@maybedelim%
    {\begin{array}{#1}}%
    {\end{array}}%
    {\hskip-\arraycolsep\spalignvecdelimskip}%
    {#2}%
  \endgroup%
  }
\def\spalign@repeat#1#2{%
  \begingroup%
  \count255=0 %
  \toks255={}%
  \loop\ifnum\count255<#2%
    \edef\spalign@settok{\toks255={\the\toks255 #1}}%
    \spalign@settok%
    \advance\count255 by 1 %
  \repeat%
  \xdef\spalign@repeated{\the\toks255}%
  \endgroup
  }
\spalign@def@star\spalignmat{}
\renewcommand\spalignmat@star[1][c]{%
  \spalign@maybedelim{%
    \spalign@repeat{#1}{\spalignmaxcols}%
    \edef\spalign@barray{\noexpand\begin{array}{%
        \spalign@repeated}}%
    \spalign@barray%
    }{\end{array}%
    }{\hskip-\arraycolsep\spalignmatdelimskip}%
  }
\spalign@def@star\spalignaugmatn{}
\renewcommand\spalignaugmatn@star[2][r]{%
  \spalign@maybedelim{%
    \advance\spalignmaxcols by -#2 %
    \spalign@repeat{#1}{\spalignmaxcols}%
    \let\spalign@repeated@one=\spalign@repeated%
    \spalign@repeat{#1}{#2}%
    \let\spalign@repeated@two=\spalign@repeated%
    \edef\spalign@barray{\noexpand\begin{array}{%
        \spalign@repeated@one|\spalign@repeated@two}}%
    \spalign@barray%
    }{\end{array}%
    }{\hskip-\arraycolsep\spalignmatdelimskip}%
  }%
\spalign@def@star\spalignaugmat{}
\renewcommand\spalignaugmat@star[1][r]{%
  \spalignaugmatn@star[#1]{1}%
  }%
\spalign@def@star\spalignaugmathalf{}
\renewcommand\spalignaugmathalf@star[1][r]{%
  \spalign@maybedelim{%
    \count255=\spalignmaxcols%
    \divide\spalignmaxcols by 2 %
    \advance\count255 by -\spalignmaxcols%
    \spalign@repeat{#1}{\spalignmaxcols}%
    \let\spalign@repeated@one=\spalign@repeated%
    \spalignmaxcols=\count255%
    \spalign@repeat{#1}{\spalignmaxcols}%
    \let\spalign@repeated@two=\spalign@repeated%
    \edef\spalign@barray{\noexpand\begin{array}{%
      \spalign@repeated@one|\spalign@repeated@two}}%
    \spalign@barray%
    }{\end{array}%
    }{\hskip-\arraycolsep\spalignmatdelimskip}%
  }%
\spalign@def@star\spalignsys#1{%
  \ifspalign@star\else%
    \left\spalign@sysleftdelim\spalignsysdelimskip%
  \fi%
  \vcenter{%
    \def\spalignendline{\cr}%
    \openup1pt%
    \tabskip=0pt%
    \def\+{\mathbin{\phantom{+}}}%
    \def\={\mathrel{\phantom{=}}}%
    \def\.{}%
    \halign{%
      \tabskip=\spalignsystabspace%
      &$\hfil##$&${}##{}$\cr%
      \spalignretokenize{#1}\crcr%
      }%
    }\hskip-\spalignsystabspace%
  \ifspalign@star\else%
    \spalignsysdelimskip\right\spalign@sysrightdelim%
  \fi%
  }
\makeatother
\endinput
%%
%% End of file `spalign.sty'.
