%% TABLES (WITH SUPPORT FOR MERGED CELLS OF GENERAL CONTENTS)
%
% change this info string if making any custom modification
\ProvidesFile{sphinxlatextables.sty}[2022/08/15 tables]%

% Provides support for this output mark-up from Sphinx latex writer
% and table templates:
%
% - the tabulary and longtable environments from the eponymous packages
% - the varwidth environment
% - the >{} etc mark-up possible in tabularcolumns is from array package
%     which is loaded by longtable and tabulary
% - \X, \Y, T column types; others (L, C, R, J) are from tabulary package
% - \sphinxaftertopcaption
% - \sphinxatlongtableend
% - \sphinxatlongtablestart
% - \sphinxattableend
% - \sphinxattablestart
% - \sphinxcapstartof
% - \sphinxcolwidth
% - \sphinxlongtablecapskipadjust
% - \sphinxmultirow
% - \sphinxstartmulticolumn
% - \sphinxstopmulticolumn
% - \sphinxtablestrut
% - \sphinxthecaptionisattop
% - \sphinxthelongtablecaptionisattop
% - \sphinxhline
% - \sphinxcline
% - \sphinxvlinecrossing
% - \sphinxfixclines
% - \sphinxtoprule
% - \sphinxmidrule
% - \sphinxbottomrule
% - \sphinxtableatstartofbodyhook
% - \sphinxtableafterendhook
% - \sphinxthistablewithglobalstyle
% - \sphinxthistablewithbooktabsstyle
% - \sphinxthistablewithborderlessstyle
% - \sphinxthistablewithstandardstyle
% - \sphinxthistablewithcolorrowsstyle
% - \sphinxthistablewithnocolorrowsstyle
% - \sphinxthistablewithvlinesstyle
% - \sphinxthistablewithnovlinesstyle
%
% Executes \RequirePackage for:
%
% - tabulary
% - longtable
% - varwidth
% - colortbl
% - booktabs if 'booktabs' in latex_table_style
%
% Extends tabulary and longtable via patches and custom macros to support
% merged cells possibly containing code-blocks in complex tables

\RequirePackage{tabulary}
% tabulary has a bug with its re-definition of \multicolumn in its first pass
% which is not \long. But now Sphinx does not use LaTeX's \multicolumn but its
% own macro. Hence we don't even need to patch tabulary. See
% sphinxpackagemulticell.sty
% X or S (Sphinx) may have meanings if some table package is loaded hence
% \X was chosen to avoid possibility of conflict
\newcolumntype{\X}[2]{p{\dimexpr
      (\linewidth-\spx@arrayrulewidth)*#1/#2-\tw@\tabcolsep-\spx@arrayrulewidth\relax}}
\newcolumntype{\Y}[1]{p{\dimexpr
      #1\dimexpr\linewidth-\spx@arrayrulewidth\relax-\tw@\tabcolsep-\spx@arrayrulewidth\relax}}
% \spx@arrayrulewidth is used internally and its meaning will be set according
% to the table type; no extra user code should modify it.  In particular any
% \setlength{\spx@arrayrulewidth}{...} may break all of LaTeX... (really...)
\def\spx@arrayrulewidth{\arrayrulewidth}% 5.3.0, to be adjusted by each table
% using here T (for Tabulary) feels less of a problem than the X could be
\newcolumntype{T}{J}%
% For tables allowing pagebreaks
\RequirePackage{longtable}
% User interface to set-up whitespace before and after tables:
\newcommand*\sphinxtablepre {0pt}%
\newcommand*\sphinxtablepost{\medskipamount}%
% Space from caption baseline to top of table or frame of literal-block
\newcommand*\sphinxbelowcaptionspace{.5\sphinxbaselineskip}%
% as one can not use \baselineskip from inside longtable (it is zero there)
% we need \sphinxbaselineskip, which defaults to \baselineskip
\def\sphinxbaselineskip{\baselineskip}%
% The following is to ensure that, whether tabular(y) or longtable:
% - if a caption is on top of table:
%   a) the space between its last baseline and the top rule of table is
%      exactly \sphinxbelowcaptionspace
%   b) the space from last baseline of previous text to first baseline of
%      caption is exactly \parskip+\baselineskip+ height of a strut.
%   c) the caption text will wrap at width \LTcapwidth (4in)
% - make sure this works also if "caption" package is loaded by user
%   (with its width or margin option taking place of \LTcapwidth role)
% TODO: obtain same for caption of literal block: a) & c) DONE, b) TO BE DONE
%
% To modify space below such top caption, adjust \sphinxbelowcaptionspace
% To add or remove space above such top caption, adjust \sphinxtablepre:
%   notice that \abovecaptionskip, \belowcaptionskip, \LTpre are **ignored**
% A. Table with longtable
\def\sphinxatlongtablestart
   {\par
    \vskip\parskip
    \vskip\dimexpr\sphinxtablepre\relax % adjust vertical position
    \vbox{}% get correct baseline from above
    \LTpre\z@skip\LTpost\z@skip % set to zero longtable's own skips
    \edef\sphinxbaselineskip{\dimexpr\the\dimexpr\baselineskip\relax\relax}%
   }%
% Compatibility with caption package
\def\sphinxthelongtablecaptionisattop{%
    \spx@ifcaptionpackage{\noalign{\vskip-\belowcaptionskip}}{}%
}%
% Achieves exactly \sphinxbelowcaptionspace below longtable caption
\def\sphinxlongtablecapskipadjust
   {\dimexpr-\dp\strutbox
            -\spx@ifcaptionpackage{\abovecaptionskip}{\sphinxbaselineskip}%
            +\sphinxbelowcaptionspace\relax}%
\def\sphinxatlongtableend{\@nobreakfalse % latex3/latex2e#173
    \prevdepth\z@\vskip\sphinxtablepost\relax}%
% B. Table with tabular or tabulary
\def\sphinxattablestart{\par\vskip\dimexpr\sphinxtablepre\relax}%
\let\sphinxattableend\sphinxatlongtableend
% This is used by tabular and tabulary templates
\newcommand*\sphinxcapstartof[1]{%
   \vskip\parskip
   \vbox{}% force baselineskip for good positioning by capstart of hyperanchor
   % hyperref puts the anchor 6pt above this baseline; in case of caption
   % this baseline will be \ht\strutbox above first baseline of caption
   \def\@captype{#1}%
   \capstart
% move back vertically, as tabular (or its caption) will compensate
   \vskip-\baselineskip\vskip-\parskip
}%
\def\sphinxthecaptionisattop{% locate it after \sphinxcapstartof
    \spx@ifcaptionpackage
      {\caption@setposition{t}%
       \vskip\baselineskip\vskip\parskip % undo those from \sphinxcapstartof
       \vskip-\belowcaptionskip          % anticipate caption package skip
       % caption package uses a \vbox, not a \vtop, so "single line" case
       % gives different result from "multi-line" without this:
       \nointerlineskip
      }%
      {}%
}%
\def\sphinxthecaptionisatbottom{% (not finalized; for template usage)
    \spx@ifcaptionpackage{\caption@setposition{b}}{}%
}%
% The aim of \sphinxcaption is to apply to tabular(y) the maximal width
% of caption as done by longtable
\def\sphinxtablecapwidth{\LTcapwidth}%
\newcommand\sphinxcaption{\@dblarg\spx@caption}%
\long\def\spx@caption[#1]#2{%
   \noindent\hb@xt@\linewidth{\hss
      \vtop{\@tempdima\dimexpr\sphinxtablecapwidth\relax
% don't exceed linewidth for the caption width
            \ifdim\@tempdima>\linewidth\hsize\linewidth\else\hsize\@tempdima\fi
% longtable ignores \abovecaptionskip/\belowcaptionskip, so do the same here
            \abovecaptionskip\sphinxabovecaptionskip % \z@skip
            \belowcaptionskip\sphinxbelowcaptionskip % \z@skip
            \caption[{#1}]%
               {\strut\ignorespaces#2\ifhmode\unskip\@finalstrut\strutbox\fi}%
           }\hss}%
   \par\prevdepth\dp\strutbox
}%
\def\sphinxabovecaptionskip{\z@skip}% Do not use! Flagged for removal
\def\sphinxbelowcaptionskip{\z@skip}% Do not use! Flagged for removal
% This wrapper of \abovecaptionskip is used in sphinxVerbatim for top
% caption, and with another value in sphinxVerbatimintable
% TODO: To unify space above caption of a code-block with the one above
%       caption of a table/longtable, \abovecaptionskip must not be used
%       This auxiliary will get renamed and receive a different meaning
%       in future.
\def\spx@abovecaptionskip{\abovecaptionskip}%
% Achieve \sphinxbelowcaptionspace below a caption located above a tabular
% or a tabulary
\newcommand\sphinxaftertopcaption
{%
   \spx@ifcaptionpackage
     {\par\prevdepth\dp\strutbox\nobreak\vskip-\abovecaptionskip}{\nobreak}%
   \vskip\dimexpr\sphinxbelowcaptionspace\relax
   \vskip-\baselineskip\vskip-\parskip
}%
% varwidth is crucial for our handling of general contents in merged cells
\RequirePackage{varwidth}
% but addition of a compatibility patch with hyperref is needed
% (tested with varwidth v 0.92  Mar 2009)
\AtBeginDocument {%
    \let\@@vwid@Hy@raisedlink\Hy@raisedlink
    \long\def\@vwid@Hy@raisedlink#1{\@vwid@wrap{\@@vwid@Hy@raisedlink{#1}}}%
    \edef\@vwid@setup{%
      \let\noexpand\Hy@raisedlink\noexpand\@vwid@Hy@raisedlink % HYPERREF !
      \unexpanded\expandafter{\@vwid@setup}}%
}%

% NOTA BENE: since the multicolumn and multirow code was written Sphinx
% decided to prefix non public internal macros by \spx@ and in fact all
% such macros here should now be prefixed by \spx@table@, but doing the
% update is delayed to later. (written at 5.3.0)

%%%%%%%%%%%%%%%%%%%%%
% --- MULTICOLUMN ---
% standard LaTeX's \multicolumn
% 1. does not allow verbatim contents,
% 2. interacts very poorly with tabulary.
%
% It is needed to write own macros for Sphinx: to allow code-blocks in merged
% cells rendered by tabular/longtable, and to allow multi-column cells with
% paragraphs to be taken into account sanely by tabulary algorithm for column
% widths.
%
% This requires quite a bit of hacking. First, in Sphinx, the multi-column
% contents will *always* be wrapped in a varwidth environment. The issue
% becomes to pass it the correct target width. We must trick tabulary into
% believing the multicolumn is simply separate columns, else tabulary does not
% incorporate the contents in its algorithm. But then we must clear the
% vertical rules...
%
% configuration of tabulary
\setlength{\tymin}{3\fontcharwd\font`0 }% minimal width of "squeezed" columns
\setlength{\tymax}{10000pt}% allow enough room for paragraphs to "compete"
% we need access to tabulary's final computed width. \@tempdima is too volatile
% to hope it has kept tabulary's value when \sphinxcolwidth needs it.
\newdimen\sphinx@TY@tablewidth
\def\tabulary{%
  \def\TY@final{\sphinx@TY@tablewidth\@tempdima\tabular}%
  \let\endTY@final\endtabular
  \TY@tabular}%
% next hack is needed only if user has set latex_use_latex_multicolumn to True:
% it fixes tabulary's bug with \multicolumn defined "short" in first pass. (if
% upstream tabulary adds a \long, our extra one causes no harm)
\def\sphinx@tempa #1\def\multicolumn#2#3#4#5#6#7#8#9\sphinx@tempa
   {\def\TY@tab{#1\long\def\multicolumn####1####2####3{\multispan####1\relax}#9}}%
\expandafter\sphinx@tempa\TY@tab\sphinx@tempa
%
% TN. 1: as \omit is never executed, Sphinx multicolumn does not need to worry
% like standard multicolumn about |l| vs l|. On the other hand it assumes
% columns are separated by a | ... (if not it will add extraneous
% \arrayrulewidth space for each column separation in its estimate of available
% width).
%
% Update at 5.3.0: code uses \spx@arrayrulewidth which is kept in sync with the
% table column specification (aka preamble):
% - no | in preamble:             \spx@arrayrulewidth -> \z@
% - at least a | in the preamble: \spx@arrayrulewidth -> \arrayrulewidth
% This is used for computation of merged cells widths.  Mixed preambles using
% at least a | but not using it for all columns (as can be obtained via the
% tabularcolumns directive) may cause some merged cells contents to be slightly
% shifted to the left as they assume merged columns are | separated where in
% fact they perhaps are not.
%
% TN. 1b: as Sphinx multicolumn uses neither \omit nor \span, it can not
% (easily) get rid of extra macros from >{...} or <{...} between columns. At
% least, it has been made compatible with colortbl's \columncolor.
%
% TN. 2: tabulary's second pass is handled like tabular/longtable's single
% pass, with the difference that we hacked \TY@final to set in
% \sphinx@TY@tablewidth the final target width as computed by tabulary. This is
% needed only to handle columns with a "horizontal" specifier: "p" type columns
% (inclusive of tabulary's LJRC) holds the target column width in the
% \linewidth dimension.
%
% TN. 3: use of \begin{sphinxmulticolumn}...\end{sphinxmulticolumn} mark-up
% would need some hacking around the fact that groups can not span across table
% cells (the code does inserts & tokens, see TN1b). It was decided to keep it
% simple with \sphinxstartmulticolumn...\sphinxstopmulticolumn.
%
% MEMO about nesting: if sphinxmulticolumn is encountered in a nested tabular
% inside a tabulary it will think to be at top level in the tabulary. But
% Sphinx generates no nested tables, and if some LaTeX macro uses internally a
% tabular this will not have a \sphinxstartmulticolumn within it!
%
% 5.3.0 adds a check for multirow as single-row multi-column will allow a row
% colour but multi-row multi-column should not.
% Attention that this assumes \sphinxstartmulticolumn is always followed
% in latex mark-up either by \sphinxmultirow or \begin (from \begin{varwidth}).
\def\sphinxstartmulticolumn#1#2{%
    \ifx\sphinxmultirow#2%
        \gdef\spx@table@hackCT@inmergedcell{\spx@table@hackCT@nocolor}%
    \else
        \global\let\spx@table@hackCT@inmergedcell\spx@@table@hackCT@inmergedcell
    \fi
    \sphinx@startmulticolumn{#1}#2%
}%
\def\sphinx@startmulticolumn{%
    \ifx\equation$% $ tabulary's first pass
        \expandafter\sphinx@TYI@start@multicolumn
    \else % either not tabulary or tabulary's second pass
        \expandafter\sphinx@start@multicolumn
    \fi
}%
\def\sphinxstopmulticolumn{%
    \ifx\equation$% $ tabulary's first pass
        \expandafter\sphinx@TYI@stop@multicolumn
    \else % either not tabulary or tabulary's second pass
        \ignorespaces
    \fi
}%
\def\sphinx@TYI@start@multicolumn#1{%
    % use \gdef always to avoid stack space build up
    \gdef\sphinx@tempa{#1}\begingroup\setbox\z@\hbox\bgroup
}%
\def\sphinx@TYI@stop@multicolumn{\egroup % varwidth was used with \tymax
    \xdef\sphinx@tempb{\the\dimexpr\wd\z@/\sphinx@tempa}% per column width
    \endgroup
    \expandafter\sphinx@TYI@multispan\expandafter{\sphinx@tempa}%
}%
\def\sphinx@TYI@multispan #1{%
    \kern\sphinx@tempb\ignorespaces % the per column occupied width
    \ifnum#1>\@ne % repeat, taking into account subtleties of TeX's & ...
      \expandafter\sphinx@TYI@multispan@next\expandafter{\the\numexpr#1-\@ne\expandafter}%
    \fi
}%
\def\sphinx@TYI@multispan@next{&\relax\sphinx@TYI@multispan}%
%
% Now the branch handling either the second pass of tabulary or the single pass
% of tabular/longtable. This is the delicate part where we gather the
% dimensions from the p columns either set-up by tabulary or by user p column
% or Sphinx \X, \Y columns. The difficulty is that to get the said width, the
% template must be inserted (other hacks would be horribly complicated except
% if we rewrote crucial parts of LaTeX's \@array !) and we can not do
% \omit\span like standard \multicolumn's easy approach. Thus we must cancel
% the \vrule separators. Also, perhaps the column specifier is of the l, c, r
% type, then we attempt an ad hoc rescue to give varwidth a reasonable target
% width.
\def\sphinx@start@multicolumn#1{%
    \gdef\sphinx@multiwidth{0pt}\gdef\sphinx@tempa{#1}\sphinx@multispan{#1}%
}%
\def\sphinx@multispan #1{%
    \ifnum#1=\@ne\expandafter\sphinx@multispan@end
            \else\expandafter\sphinx@multispan@next
    \fi {#1}%
}%
\def\sphinx@multispan@next #1{%
    % trick to recognize L, C, R, J or p, m, b type columns
    \ifdim\baselineskip>\z@
       \gdef\sphinx@tempb{\linewidth}%
    \else
    % if in an l, r, c type column, try and hope for the best
       \xdef\sphinx@tempb{\the\dimexpr(\ifx\TY@final\@undefined\linewidth\else
            \sphinx@TY@tablewidth\fi-\spx@arrayrulewidth)/\sphinx@tempa
            -\tw@\tabcolsep-\spx@arrayrulewidth\relax}%
    \fi
    \noindent\kern\sphinx@tempb\relax
    \xdef\sphinx@multiwidth
           {\the\dimexpr\sphinx@multiwidth+\sphinx@tempb+\tw@\tabcolsep+\spx@arrayrulewidth}%
    \spx@table@hackCT@fixcolorpanel
    % silence a | column separator in our merged cell
    \spx@table@hackCT@inhibitvline
    % prevent column colours to interfere with our multi-column but allow row
    % colour (we can't obey a \cellcolor as it has not be seen yet at this stage)
    \spx@table@hackCT@inmergedcell&\relax
    % repeat
    \expandafter\sphinx@multispan\expandafter{\the\numexpr#1-\@ne}%
}%
\def\sphinx@multispan@end#1{%
    % first, trace back our steps horizontally
    \noindent\kern-\dimexpr\sphinx@multiwidth\relax
    % and now we set the final computed width for the varwidth environment
    \ifdim\baselineskip>\z@
       \xdef\sphinx@multiwidth{\the\dimexpr\sphinx@multiwidth+\linewidth}%
    \else
       \xdef\sphinx@multiwidth{\the\dimexpr\sphinx@multiwidth+
         (\ifx\TY@final\@undefined\linewidth\else
          \sphinx@TY@tablewidth\fi-\spx@arrayrulewidth)/\sphinx@tempa
          -\tw@\tabcolsep-\spx@arrayrulewidth\relax}%
    \fi
    % last cell of the multi-column
    \aftergroup\spx@table@hackCT@fixcolorpanel
    \aftergroup\spx@table@hackCT@inmergedcell
}%
\newcommand*\sphinxcolwidth[2]{%
  % this dimension will always be used for varwidth, and serves as maximum
  % width when cells are merged either via multirow or multicolumn or both,
  % as always their contents is wrapped in varwidth environment.
  \ifnum#1>\@ne % multi-column (and possibly also multi-row)
  % we wrote our own multicolumn code especially to handle that (and allow
  % verbatim contents)
   \ifx\equation$%$
       \tymax % first pass of tabulary (cf MEMO above regarding nesting)
   \else % the \@gobble thing is for compatibility with standard \multicolumn
       \sphinx@multiwidth\@gobble{#1/#2}%
   \fi
  \else % single column multirow
   \ifx\TY@final\@undefined % not a tabulary.
    \ifdim\baselineskip>\z@
        % in a p{..} type column, \linewidth is the target box width
        \linewidth
    \else
        % l, c, r columns. Do our best.
        \dimexpr(\linewidth-\spx@arrayrulewidth)/#2-
                \tw@\tabcolsep-\spx@arrayrulewidth\relax
    \fi
   \else % in tabulary
    \ifx\equation$%$% first pass
        \tymax % it is set to a big value so that paragraphs can express themselves
    \else
     % second pass.
     \ifdim\baselineskip>\z@
         \linewidth % in a L, R, C, J column or a p, \X, \Y ...
     \else
         % we have hacked \TY@final to put in \sphinx@TY@tablewidth the table width
         \dimexpr(\sphinx@TY@tablewidth-\spx@arrayrulewidth)/#2-
                 \tw@\tabcolsep-\spx@arrayrulewidth\relax
     \fi
    \fi
   \fi
  \fi
}%
% fallback default in case user has set latex_use_latex_multicolumn to True:
% \sphinxcolwidth will use this only inside LaTeX's standard \multicolumn
\def\sphinx@multiwidth #1#2{\dimexpr % #1 to gobble the \@gobble (!)
    (\ifx\TY@final\@undefined\linewidth\else\sphinx@TY@tablewidth\fi
     -\spx@arrayrulewidth)*#2-\tw@\tabcolsep-\spx@arrayrulewidth\relax}%

% \spx@table@hackCT@inhibitvline
% packages like colortbl add group levels, we need to "climb back up" to be
% able to hack the \vline and also the colortbl inserted tokens.  The hack
% sets the \arrayrulewidth to \z@ to inhibit a | separator at right end
% of the cell, if present (our code does not use \omit so can not avoid the
% \vline insertion, but setting its width to zero makes it do nothing).
% Some subtlety with colour panels must be taken care of.
\def\spx@table@hackCT@inhibitvline{\ifnum\currentgrouptype=6\relax
    \kern\spx@arrayrulewidth % will be compensated by extra colour panel left overhang
    \arrayrulewidth\z@% trick to inhibit the {\vrule width \arrayrulewidth}
    \else\aftergroup\spx@table@hackCT@inhibitvline\fi}%

% hacking around colour matters
% Sphinx 1.6 comment:
% It turns out \CT@row@color is not expanded contrarily to \CT@column@color
% during LaTeX+colortbl preamble preparation, hence it would be possible for
% \CT@setup to discard only the column color and choose to obey or not
% row color and cell color. It would even be possible to propagate cell color
% to row color for the duration of the Sphinx multicolumn... the (provisional?)
% choice has been made to cancel the colortbl colours for the multicolumn
% duration.
% Sphinx 5.3.0 comment:
% - colortbl has no mechanism to disable colour background in a given cell:
%   \cellcolor triggers one more \color, but has no possibility to revert
%   a previously emitted \color, only to override it via an additional \color
% - prior to 5.3.0, Sphinx did not officially support colour in tables,
%   but it did have a mechanism to protect merged cells from being partly
%   covered by colour panels at various places.  At 5.3.0 this mechanism
%   is relaxed a bit to allow row colour for a single-row merged cell.
%
% fixcolorpanel
\def\spx@table@hackCT@fixcolorpanel{\ifnum\currentgrouptype=6\relax
    \edef\spx@table@leftcolorpanelextra
    % \edef as \arrayrulewidth will be set to \z@ next,
    % hence also \spx@arrayrulewidth...
         {\sphinxcolorpanelextraoverhang+\the\spx@arrayrulewidth}%
    \else\aftergroup\spx@table@hackCT@fixcolorpanel\fi}%
%
% inmergedcell
% \spx@table@hackCT@inmergedcell will be locally set to either this
% \spx@@table@hackCT@inmergedcell or to \spx@table@hackCT@nocolor
% "\let\spx@original@CT@setup\CT@setup" is done after loading colortbl
\def\spx@@table@hackCT@inmergedcell{\ifnum\currentgrouptype=6\relax
    \let\CT@setup\spx@CT@setup@inmergedcell
    \else\aftergroup\spx@@table@hackCT@inmergedcell\fi
}%
\newif\ifspx@table@inmergedcell
\def\spx@CT@setup@inmergedcell #1\endgroup{%
    % - obey only row color and disable effect of \sphinxcolorblend
    % - turn on the inmergedcell boolean to signal to \CT@row@color
    \spx@original@CT@setup
    \spx@table@inmergedcelltrue % needed by \CT@row@color
    % deactivate effect of \sphinxcolorblend if it happened at all
    \ifdefined\blendcolors\blendcolors{}\fi
    \CT@row@color
    \CT@do@color
    \global\let\CT@cell@color\relax
    \endgroup
}%
%
% nocolor
\def\spx@table@hackCT@nocolor{\ifnum\currentgrouptype=6\relax
% sadly \CT@column@color is possibly already expanded so we can't
% simply do \let\CT@column@color\relax etc...
% admittedly we could perhaps hack \CT@color but well
    \let\CT@setup\spx@CT@setup@nocolor
    \else\aftergroup\spx@table@hackCT@nocolor\fi
}
\def\spx@CT@setup@nocolor#1\endgroup{%
        \global\let\CT@cell@color\relax
    % the above fix was added at 5.3.0
    % formerly a \cellcolor added by a raw latex directive in the merged cell
    % would have caused colour to apply to the *next* cell after the merged
    % one; we don't support \cellcolor from merged cells contents anyhow.
    \endgroup}
%
% norowcolor
\def\spx@table@hackCT@norowcolor{%
% a bit easier although merged cells complicate the matter as they do need
% to keep the rowcolor; and we can't know yet if we are in a merged cell
    \ifnum\currentgrouptype=6\relax
       \ifx\CT@row@color\relax
       \else
           \let\spx@saved@CT@row@color\CT@row@color
           \def\CT@row@color{%
             \ifspx@table@inmergedcell\expandafter\spx@saved@CT@row@color\fi
           }%
       \fi
    \else\aftergroup\spx@table@hackCT@norowcolor\fi
}
%
% \sphinxcolorblend
\def\spx@table@hackCT@colorblend{%
    \ifnum\currentgrouptype=6\relax
        \expandafter\blendcolors\spx@colorblendparam
        % merged cells will do a \blendcolors{} to cancel the effet
        % we can not know here yet if in merged cell as the boolean
        % \ifspx@table@inmergedcell is not yet updated
    \else
      \aftergroup\spx@table@hackCT@colorblend
    \fi
}
\def\sphinxcolorblend#1{\gdef\spx@colorblendparam{{#1}}\spx@table@hackCT@colorblend}
% Either xcolor.sty exists on user system and has been loaded by sphinx.sty,
% or it does not exist, so we can use \@ifpackageloaded without delaying.
\@ifpackageloaded{xcolor}%
  {}%
  {\def\sphinxcolorblend#1{%
\PackageWarning{sphinx}{This table uses \string\sphinxcolorblend\space
  but xcolor is not in\MessageBreak
  the TeX/LaTeX installation, the command will be\MessageBreak
  ignored in this and the next tables}%
   \global\let\sphinxcolorblend\@gobble
   \sphinxbuildwarning{colorblend}%
   }%
  }


%%%%%%%%%%%%%%%%%%
% --- MULTIROW ---
% standard \multirow
% 1. does not allow verbatim contents,
% 2. does not allow blank lines in its argument,
% 3. its * specifier means to typeset "horizontally" which is very
%    bad for paragraph content. 2016 version has = specifier but it
%    must be used with p type columns only, else results are bad,
% 4. it requires manual intervention if the contents is too long to fit
%    in the asked-for number of rows.
% 5. colour panels (either from \rowcolor or \columncolor) will hide
%    the bottom part of multirow text, hence manual tuning is needed
%    to put the multirow insertion at the _bottom_.
%
% The Sphinx solution consists in always having contents wrapped
% in a varwidth environment so that it makes sense to estimate how many
% lines it will occupy, and then ensure by insertion of suitable struts
% that the table rows have the needed height. The needed mark-up is done
% by LaTeX writer, which has its own id for the merged cells.
%
% The colour issue is "solved" by clearing colour panels in all cells,
% whether or not the multirow is single-column or multi-column.
%
% MEMO at 5.3.0: to allow a multirow cell in a single column to react to
% \columncolor correctly, it seems only way is that the contents
% are inserted by bottom cell (this is mentioned in multirow.sty doc, too).
% Sphinx could at Python level "move" the contents to that cell.  But the
% mechanism used here via \sphinxtablestrut to enlarge rows to make room for
% the contents if needed becomes more challenging yet, because \sphinxtablestrut
% mark-up will be parsed by TeX *before* it sees the contents of the merged
% cell.. So it seems the best way would be to actually store the contents into
% some owned-by-Sphinx box storage which needs to be globally allocated to
% that usage ; then we need multiple such boxes, say at least 5 to cover
% 99% or use case.  Or perhaps some trick with storing in a \vbox and recovering
% via some \vsplit but this becomes complicated... perhaps in future.
%
% In passing we obtain baseline alignments across rows (only if
% \arraystretch is 1, as LaTeX's does not obey \arraystretch in "p"
% multi-line contents, only first and last line...)
%
% TODO: examine the situation with \arraystretch > 1. The \extrarowheight
% is hopeless for multirow anyhow, it makes baseline alignment strictly
% impossible.
\newcommand\sphinxmultirow[2]{\begingroup
  % #1 = nb of spanned rows, #2 = Sphinx id of "cell", #3 = contents
  % but let's fetch #3 in a way allowing verbatim contents !
  \def\sphinx@nbofrows{#1}\def\sphinx@cellid{#2}%
  \afterassignment\sphinx@multirow\let\next=
}%
\def\sphinx@multirow {%
  \setbox\z@\hbox\bgroup\aftergroup\sphinx@@multirow\strut
}%
\def\sphinx@@multirow {%
% MEMO: we could check status of \CT@cell@color here, but unfortunately we
% can't know the exact height which will be covered by the cells in total
% (it may be more than our \box\z@ dimensions).  We could use an \fcolorbox
% wrapper on \box\z@ but this will not extend precisely to the bottom rule.
%
% Only solution if we want to obey a raw \cellcolor, or a \columncolor, seems
% to delay unboxing the gathered contents as part of the bottom row with
% a suitable vertical adjustment...
%
  % The contents, which is a varwidth environment, has been captured in
  % \box0 (a \hbox).
  % We have with \sphinx@cellid an assigned unique id. The goal is to give
  % about the same height to all the involved rows.
  % For this Sphinx will insert a \sphinxtablestrut{cell_id} mark-up
  % in LaTeX file and the expansion of the latter will do the suitable thing.
  \dimen@\dp\z@
  \dimen\tw@\ht\@arstrutbox
  \advance\dimen@\dimen\tw@
  \advance\dimen\tw@\dp\@arstrutbox
  \count@=\dimen@       % type conversion dim -> int
  \count\tw@=\dimen\tw@
  \divide\count@\count\tw@ % TeX division truncates
  \advance\dimen@-\count@\dimen\tw@
  % 1300sp is about 0.02pt. For comparison a rule default width is 0.4pt.
  % (note that if \count@ holds 0, surely \dimen@>1300sp)
  \ifdim\dimen@>1300sp \advance\count@\@ne \fi
  % now \count@ holds the count L of needed "lines"
  % and \sphinx@nbofrows holds the number N of rows
  % we have L >= 1 and N >= 1
  % if L is a multiple of N, ... clear what to do !
  % else write L = qN + r, 1 <= r < N and we will
  % arrange for each row to have enough space for:
  %     q+1 "lines" in each of the first r rows
  %       q "lines" in each of the (N-r) bottom rows
  % for a total of (q+1) * r + q * (N-r) = q * N + r = L
  % It is possible that q == 0.
  \count\tw@\count@
  % the TeX division truncates
  \divide\count\tw@\sphinx@nbofrows\relax
  \count4\count\tw@ % q
  \multiply\count\tw@\sphinx@nbofrows\relax
  \advance\count@-\count\tw@ % r
  \expandafter\xdef\csname sphinx@tablestrut_\sphinx@cellid\endcsname
     {\noexpand\sphinx@tablestrut{\the\count4}{\the\count@}{\sphinx@cellid}}%
  \dp\z@\z@
  % this will use the real height if it is >\ht\@arstrutbox
  \sphinxtablestrut{\sphinx@cellid}\box\z@
  \endgroup % group was opened in \sphinxmultirow
}%
\newcommand*\sphinxtablestrut[1]{%
  % #1 is a "cell_id", i.e. the id of a merged group of table cells
  \csname sphinx@tablestrut_#1\endcsname
}%
% LaTeX typesets the table row by row, hence each execution can do
% an update for the next row.
\newcommand*\sphinx@tablestrut[3]{\begingroup
  % #1 = q, #2 = (initially) r, #3 = cell_id, q+1 lines in first r rows
  % if #2 = 0, create space for max(q,1) table lines
  % if #2 > 0, create space for q+1 lines and decrement #2
  \leavevmode
  \count@#1\relax
  \ifnum#2=\z@
    \ifnum\count@=\z@\count@\@ne\fi
  \else
    % next row will be with a #2 decremented by one
    \expandafter\xdef\csname sphinx@tablestrut_#3\endcsname
      {\noexpand\sphinx@tablestrut{#1}{\the\numexpr#2-\@ne}{#3}}%
   \advance\count@\@ne
  \fi
  \vrule\@height\ht\@arstrutbox
        \@depth\dimexpr\count@\ht\@arstrutbox+\count@\dp\@arstrutbox-\ht\@arstrutbox\relax
        \@width\z@
  \endgroup
  % we need this to avoid colour panels hiding bottom parts of multirow text
  \spx@table@hackCT@nocolor
}%

%%%%%%%%%%%%%%%%%%
% --- STYLING ---
%

%
% Support for colour in table
%
% Core LaTeX package (very old, part of texlive-latex-base on Debian distr.)
% providing \columncolor, \rowcolor, \cellcolor and \arrayrulecolor.
\RequirePackage{colortbl}
\let\spx@original@CT@setup\CT@setup

% LaTeX's \cline has **strong** deficiencies
% ******************************************
% We work around them via an added \sphinxfixclines{number of columns} in the
% table mark-up, and also extra mark-up \sphinxvlinecrossing{col no} for
% crossings not contiguous to any cline.  To fix the gap at left extremity of a
% \cline, we redefine the core LaTeX \c@line because this avoids adjoining a
% small square with potential PDF viewer anti-aliasing issues.  We waited
% after loading colortbl because it also redefines \c@line for it to obey the
% colour set by \arrayrulecolor.
% MEMO: booktabs package does *not* redefine \@cline so we are safe here.
\def\@cline#1-#2\@nil{%
  \omit
  \@multicnt#1%
  \advance\@multispan\m@ne
  \ifnum\@multicnt=\@ne\@firstofone{&\omit}\fi
  \@multicnt#2%
  \advance\@multicnt-#1%
  \advance\@multispan\@ne
  {\CT@arc@
% start of Sphinx modification
  \ifnum#1>\@ne\kern-\spx@arrayrulewidth\fi% fix gap at join with vertical lines
% end of Sphinx modification
%    Comments:
%
%    If we had the information whether the previous column ended with a | or
%    not, we could decide what to do here.  Alternatively the mark-up could
%    use either original \cline or the one modified as here depending on case.
%    One wonders why LaTeX does not provide itself the alternative as a
%    complement to \cline, to use on case by case basis.
%    Here we handle both at same time via using the \spx@arrayrulewidth which
%    will be \z@ if no | at all so will induce here nothing.
%
%    As a result Sphinx basically supports well only tables having either all
%    columns |-separated, or no | at all, as it uses \spx@arrayrrulewidth in
%    all columns (here and in multicolumn code).
%
%    We also considered a method not modifying \c@line but it requires too
%    much extra mark-up from Python LaTeX writer and/or extra LaTeX coding.
% back to LaTeX+colortbl code
  \leaders\hrule\@height\arrayrulewidth\hfill}%
  \cr
% the last one will need to be compensated, this is job of \sphinxclines
  \noalign{\vskip-\arrayrulewidth}%
}
\def\spx@table@fixvlinejoin{%
  {\CT@arc@ % this is the color command set up by \arrayrulecolor
   \vrule\@height\arrayrulewidth
% side remark: LaTeX has only a single \arrayrulewidth for all kinds
% for cell borders in table, horizontal or vertical...
         \@depth\z@
         \@width\spx@arrayrulewidth
  }%
}
% Sphinx LaTeX writer issues one such for each vertical line separating two
% contiguous multirow cells; i.e. those crossings which can are not already
% taken care of by our modified at left extremity \cline.
% One could imagine a more \...crossingS (plural) receiving a comma delimited
% list, which would simplify the mark-up but this would complexify both the
% Python and the LaTeX coding.
\def\sphinxtablevlinecrossing#1{%
  \sphinxtabledecrementrownum
  \omit
  \@multispan{#1}%
  \hfill
  \spx@table@fixvlinejoin
  \cr
  \noalign{\vskip-\arrayrulewidth}%
}
% This "fixclines" is also needed if no \sphinxcline emitted and is useful
% even in extreme case with no \sphinxvlinecrossing either, to give correct
% height to multirow extending across all table width assuming other rows are
% separated generally by an \hline, so as to keep coherent line spacing.
%
% It is designed to work ok even if no | separators are in the table (because
% \spx@table@fixvlinejoin uses \spx@arrayrulewidth which is \z@ in that case).
\def\sphinxtablefixclines#1{% #1 is the number of columns of the table
  \sphinxtabledecrementrownum
  \omit
  \spx@table@fixvlinejoin% unneeded if first \cline started at column 1 but does
                         % not hurt; fills small gap at left-bordered table
  \@multispan{#1}%
  \hfill
  \spx@table@fixvlinejoin% fill small gap at right-bordered table
  \cr
  % this final one does NO \vskip-\arrayrulewidth... that's the whole point
}
%%%% end of \cline workarounds

%
% - passing option "table" to xcolor also loads colortbl but we needed to
%   load color or xcolor prior to the handling of the options
%
% - the \rowcolors command from [table]{xcolor} has various problems:
%
%   *  it is rigid and does not out-of-the-box allow a more complex scheme
%   such as colorA+colorB+colorC+colorB+colorC+colorB+colorC...  suitable to
%   distinguish a header row.
%
%   *  its code does not export the used colour, an information which we may
%   need for example to colourize the rule via \arrayrulecolor in the
%   appropriate manner, for example to colourize the booktabs induced vertical
%   whitespace to avoid gaps (if one wants to).
%
%   *  incompatibility with tabulary: the output depends on parity of total
%   number of rows!
%
%   *  problems with longtable: the caption will receive a background colour
%   panel, if we do not deactivate the \rowcolors action during definition of
%   the headers and footers; this requires extra mark-up.  Besides if we
%   deactivate using \hiderowcolors during header and footer formation, the
%   parity of the body rows is shifted, \rownum is even, not odd, at first body
%   row.  And setting \rownum at start of first body row is too late for
%   influencing the colour.
%
%   *  it has a global impact and must be reset at each table.  We can not
%   issue it only once and it provides no public interface (without @) to
%   cancel its effect conveniently (\hiderowcolors can only be used from
%   *inside* a table.)
%
%   *  its core mechanism which increments the row count is triggered
%   if a \cline is encountered... so this offsets the alternating colours...
%   ... or not if there are two \cline's in the row...
%   (as we will use same mechanism we have to correct this increment).
%
% So we need our own code.

% Provide \rownum and rownum LaTeX counter (code copied from colortbl v1.0f)
\ltx@ifundefined{rownum}{%
  \ltx@ifundefined{c@rownum}%
       {\newcount\rownum\let\c@rownum\rownum}%
       {\let\rownum\c@rownum}%
  }%
{\let\c@rownum\rownum}
\providecommand\therownum{\arabic{rownum}}

% extra overhang for color panels to avoid visual artifacts in pdf viewers
% (particularly if borderless)
\def\sphinxcolorpanelextraoverhang{0.1pt}
\def\spx@table@leftcolorpanelextra {\sphinxcolorpanelextraoverhang}
\def\spx@table@rightcolorpanelextra{\sphinxcolorpanelextraoverhang}
% the macro to which \CT@row@color will be set for coloured rows, serves both
% in header and body, the colours must have been defined at time of use
\def\spx@table@CT@row@color{\ifspx@table@inmergedcell
                              \CT@color{sphinxTableMergeColor}%
                            \else
                              \CT@color{sphinxTableRowColor}%
                            \fi
                            \@tempdimb\dimexpr\col@sep+\spx@table@leftcolorpanelextra\relax
                            \@tempdimc\dimexpr\col@sep+\spx@table@rightcolorpanelextra\relax
                           }%
% used by itself this will influence a single row if \CT@everycr is the
% colortbl one, to influences all rows the \CT@everycr must be modified (see
% below)
\def\sphinxrowcolorON {\global\let\CT@row@color\spx@table@CT@row@color}%
% this one turns off row colours until the next \sphinxrowcolorON
\def\sphinxrowcolorOFF{\global\let\CT@row@color\relax}%
% this one inhibits the row colour in one cell only (can be used as
% >{\sphinxnorowcolor} for turning off row colours in a given column)
\def\sphinxnorowcolor{\spx@table@hackCT@norowcolor}%

% \sphinxtoprule (or rather \sphinxtabletoprulehook) will be modified by
% the colorrows class to execute this one: 
\def\spx@table@@toprule@rowcolorON{%
        \noalign{%
          % Because of tabulary 2-pass system, the colour set-up at end of table
          % would contaminate the header colours at start of table, so must reset
          % them here.  We want all header rows to obey same colours, so we don't
          % use original \CT@everycr which sets \CT@row@color to \relax.
          \global\CT@everycr{\the\everycr}%
          \global\sphinxcolorlet{sphinxTableRowColor}{sphinxTableRowColorHeader}%
          \global\sphinxcolorlet{sphinxTableMergeColor}{\sphinxTableMergeColorHeader}%
          \sphinxrowcolorON
         }%
}%

% \sphinxtableatstartofbodyhook will be modified by colorrows class to
% execute this one; it starts the alternating colours and triggers increment
% or \rownum count at each new row (the xcolor base method for \rowcolors)
\def\spx@table@@startbodycolorrows{%
    \noalign{%
       \global\CT@everycr{% Nota Bene: in a longtable with \hline the \everycr is
                          % done two extra times! but 2 is even, so this is ok
          \noalign{\global\advance\rownum\@ne % the xcolor \rowcolors base trick
% MEMO: colortbl \CT@row@color is expanded *after* the cell contents have been
% gathered and measured, so it can't be used to expose e.g. the colour to the
% cell contents macro code.  Of course if it is known how the colour is chosen
% the procedure could be done from inside the cell.  Simpler to expose the colour
% in a public name sphinxTableRowColor at start of the row in this \noalign.
                   \sphinxSwitchCaseRowColor\rownum
                  }%
          \the\everycr
       }%
       \global\rownum\@ne % is done from inside table so ok with tabulary two passes
       \sphinxSwitchCaseRowColor\rownum % set up color for the first body row
       \sphinxrowcolorON  % has been done from \sphinxtoprule location but let's do
                          % it again in case  \sphinxtabletoprulehook has been used
                          % to inhibit colours in the header rows
    }% end of noalign contents
}
% set the colours according to row parity; a priori #1 is \rownum, but
% the macro has been designed to be usable in user level added code
\def\sphinxSwitchCaseRowColor#1{%
  \ifodd#1\relax
    \global\sphinxcolorlet{sphinxTableRowColor}{sphinxTableRowColorOdd}%
    \global\sphinxcolorlet{sphinxTableMergeColor}{\sphinxTableMergeColorOdd}%
  \else
    \global\sphinxcolorlet{sphinxTableRowColor}{sphinxTableRowColorEven}%
    \global\sphinxcolorlet{sphinxTableMergeColor}{\sphinxTableMergeColorEven}%
  \fi
}

% each \cline or \cmidrule (booktabs) consumes one \cr, offsetting the \rownum
% parity; so this macro serves to compensate and must be added to each such
% \cline or \cmidrule (see below)
\def\spx@table@@decrementrownum{\noalign{\global\advance\rownum\m@ne}}
\let\sphinxtabledecrementrownum\@empty

% \sphinxtableafterendhook will be modified by colorrows class to execute
% this after the table
\def\spx@table@resetcolortbl{%
    \sphinxrowcolorOFF
    \spx@table@reset@CTeverycr
% this last bit is done in order for the \sphinxbottomrule from the "foot"
% longtable template to be able to use same code as the \sphinxbottomrule
% at end of table body; see \sphinxbooktabsspecialbottomrule code
    \global\rownum\z@
}
\def\spx@table@reset@CTeverycr{%
% we should probably be more cautious and not hard-code here the colortbl
% set-up; so the macro is defined without @ to fac
    \global\CT@everycr{\noalign{\global\let\CT@row@color\relax}\the\everycr}%
}

% At last the style macros \sphinxthistablewithstandardstyle etc...

% They are executed before the table environments in a scope limiting
% wrapper "savenotes" environment.
%
% 0) colour support is enacted via adding code to three hooks:
%    - \sphinxtabletoprulehook       (implicit from \sphinxtoprule expansion)
%    - \sphinxtableatstartofbodyhook (explicit from table templates)
%    - \sphinxtableafterendhook      (explicit from table templates)
%    additionally special adjustment must be made in \sphinxcline
%
\def\sphinxtoprule{\spx@toprule\sphinxtabletoprulehook}
% \spx@toprule is what is defined by the standard, booktabs and borderless
% styles.
% The colorrows class will prepend \spx@table@toprule@rowcolorON into
% \sphinxtabletoprulehook which a priori is \@empty but can contain user added
% extra code, and is executed after \spx@toprule.
\let\sphinxtabletoprulehook      \@empty
\let\sphinxtableatstartofbodyhook\@empty
\let\sphinxtableafterendhook     \@empty
%
% 1) we manage these three hooks in a way allowing a custom user extra wrapper
% environment from a container class to use them as entry point for some
% custom code.  The container code is done first, prior to table templates.
% So, the style macros will *prepend* the needed color-code to the existing
% custom user code, so the custom user code can override them.  The custom
% user code should not redefine any of the 3 \sphinxtable...hook macros via a
% \global\def, but their contents can use \gdef.  In fact they probably need
% to for the first two hooks which are executed from inside the table and
% a priori need their code to be in a \noalign which limits scope.
%
% 2) the table templates and LaTeX writer code make it so that only
% one of either
%      \sphinxthistablewithcolorrowsstyle,
% or   \sphinxthistablewithnocolorrowsstyle
% will be inserted explicitly depending on local :class: for table.
% The global 'colorrows' style in latex_table_style translates at bottom
% of this file into code for inserting \sphinxthistablewithcolorrowsstyle
% at end of \sphinxthistablewithglobalstyle.  So it is impossible
% to have first \sphinxthistablewithnocolorrowsstyle, then
% \sphinxthistablewithcolorrowsstyle.  Nevertheless we have written
% the code so that in this case colorrows would indeed activate (except
% if it was already executed before as it self-annihilates).

% standard style
\def\sphinxthistablewithstandardstyle{%
    % Those two are produced by the latex writer
    \def\sphinxhline      {\hline}%
    % \sphinxtabledecrementrownum is a no-op which is redefined by colorrows
    % to correct the \rownum increment induced by \cline in colorrows regime
    \def\sphinxcline      {\sphinxtabledecrementrownum\cline}%
    % LaTeX's \cline needs fixing
    \let\sphinxvlinecrossing\sphinxtablevlinecrossing
    \let\sphinxfixclines    \sphinxtablefixclines
    % Those three are inserted by the table templates
    \def\spx@toprule      {\hline}%
    \def\sphinxmidrule    {\hline}%
    \def\sphinxbottomrule {\hline}%
    % Do not tamper with this internal
    \def\spx@arrayrulewidth{\arrayrulewidth}%
}

% booktabs style
% The \@xcmidrule patch below will do beyond its main stuff
%     \sphinxadjustcmidrulebelowsep
% Indeed the poor booktabs spacing with \cmidrule (if \sphinxbooktabscmidrule
% defined below is overwritten to use it) is quite awful.  Do
%     \let\sphinxadjustcmidrulebelowsep\empty
% if you prefer booktabs defaults.
\def\sphinxadjustcmidrulebelowsep{\belowrulesep=\aboverulesep}
\AtBeginDocument{% patch booktabs to avoid extra vertical space from
                 % consecutive \sphinxcline, if defined to use \cmidrule
  \ifdefined\@xcmidrule
    \let\spx@original@@xcmidrule\@xcmidrule
    \def\@xcmidrule{\sphinxadjustcmidrulebelowsep
                    % if we don't do that, two \sphinxcline in the same row
                    % will cause the second short rule to be shifted down
                    \ifx\@tempa\sphinxcline\let\@tempa\cmidrule\fi
                    \spx@original@@xcmidrule}%
  \fi
}
% wrappers to allow customization, e.g. via a container class
% the top, mid, bottom definitions are in fact overwritten (later, below)
% byt more complex ones needed to handle booktabs+colorrows context
\def\sphinxbooktabstoprule   {\toprule}
\def\sphinxbooktabsmidrule   {\midrule}
\def\sphinxbooktabsbottomrule{\bottomrule}
%
\let\sphinxbooktabscmidrule  \@gobble % i.e. draw no short rules at all!
% You can redefine this to use \cmidrule with various options, such
% as \cmidrule(lr), but:
% Attention, if you want this to use \cmidrule (or \cline) you must,
% if the table uses row colours,
% also include the \sphinxtabledecrementrownum token like e.g. this
%     \def\sphinxbooktabscmidrule{\sphinxtabledecrementrownum\cmidrule(lr)}
% and it must be first due to internals of the \cmidrule usage of \futurelet.

\def\sphinxthistablewithbooktabsstyle{%
    \let\sphinxhline\@empty % there is no wrapper macro here so if you want to change that
                            % you will have to redefine \sphinxthistablewithbooktabsstyle
    \def\sphinxcline     {\sphinxbooktabscmidrule}% defaults to give \@gobble
    \let\sphinxvlinecrossing\@gobble % no | in a booktabs-style table !
    \let\sphinxfixclines    \@gobble % should not be used with booktabs + \cmidrule
    \def\spx@toprule     {\sphinxbooktabstoprule}%
    \def\sphinxmidrule   {\sphinxbooktabsmidrule}%
    \def\sphinxbottomrule{\sphinxbooktabsbottomrule}%
    \def\spx@arrayrulewidth{\z@}%
}
\AtBeginDocument{\@ifpackageloaded{booktabs}%
    {}%
    {\def\sphinxthistablewithbooktabsstyle{%
    \PackageWarning{sphinx}{%
Add \string\usepackage{booktabs} to the preamble to allow\MessageBreak
local use of booktabs table style}%
    \sphinxbuildwarning{booktabs}%
    \sphinxthistablewithstandardstyle
    }}%
}%

% borderless style
\def\sphinxthistablewithborderlessstyle{%
    \let\sphinxhline      \@empty
    \let\sphinxcline      \@gobble
    \let\sphinxvlinecrossing\@gobble
    \let\sphinxfixclines    \@gobble
    \let\spx@toprule      \@empty
    \let\sphinxmidrule    \@empty
    \let\sphinxbottomrule \@empty
    \def\spx@arrayrulewidth{\z@}%
}%

% colorrows style
%
\let\sphinxifthistablewithcolorrowsTF\@secondoftwo
\def\sphinxthistablewithcolorrowsstyle{%
    \let\sphinxifthistablewithcolorrowsTF\@firstoftwo
% this is defined to auto-silence itself (in the surrounding scope-limiting
% environment) after one execution ("colorrows" can never follow "nocolorrows")
    \let\sphinxthistablewithcolorrowsstyle\@empty
%
    \let\spx@table@toprule@rowcolorON  \spx@table@@toprule@rowcolorON
    \let\spx@table@startbodycolorrows  \spx@table@@startbodycolorrows
    \let\sphinxtabledecrementrownum    \spx@table@@decrementrownum
% Is it the best choice to "prepend" to existing code there?
    \spx@prepend\spx@table@toprule@rowcolorON\to\sphinxtabletoprulehook
    \spx@prepend\spx@table@startbodycolorrows\to\sphinxtableatstartofbodyhook
%
% this one is not set to \@empty by nocolorrows, because it looks harmless
% to execute it always, as it simply resets to standard colortbl state after
% the table; so we don't need an @@ version for this one
    \spx@prepend\spx@table@resetcolortbl\to\sphinxtableafterendhook
}
\def\spx@prepend#1\to#2{% attention about using this only with #2 "storage macro"
    \toks@{#1}%
    \toks@\expandafter\expandafter\expandafter{\expandafter\the\expandafter\toks@#2}%
    \edef#2{\the\toks@}%
}%

\def\sphinxthistablewithnocolorrowsstyle{%
    \let\sphinxifthistablewithcolorrowsTF\@secondoftwo
% rather than trying to remove the code added by 'colorrows' style, we 
% simply make it no-op, without even checking if really it was activated.
    \let\spx@table@toprule@rowcolorON\@empty
    \let\spx@table@startbodycolorrows\@empty
    \let\sphinxtabledecrementrownum  \@empty
% we don't worry about \sphinxtableafterendhook as the \spx@table@resetcolortbl
% done at end can not do harm; and we could also have not bothered with the
% \sphinxtabledecrementrownum as its \rownum decrement, if active, is harmless
% in non-colorrows context
}

% (not so easy) implementation of the booktabscolorgaps option.  This option
% defaults to true and is not officially documented, as already colorrows is
% only opt-in, so it is there only as a "turn-off" switch, but if nobody
% complains in next few months, it will probably be removed altogether at
% 6.0.0.  The reason it exists is because of longtable aspeces described
% below.
%
% As it is used via \sphinxsetup booktabscolorgaps status is not known here
% and may change locally.  So it must be implemented via delayed or
% conditional code.
%
% We do not know the order of execution of \sphinxthistablewithbooktabsstyle
% versus \sphinxthistablewithcolorrows: if booktabs is global option it
% will be executed first; but if colorrows is global option and not booktabs
% then colorrows will be executed first via \sphinxthistablewithglobalstyle
%
% Modifying things from locations such as \sphinxtabletoprulehook which are
% executed within the table is not convenient as it must use \global
% but then we would have to undo this after the table.
%
% So what we do is to prepare booktabs specific macros to incorporate
% a conditional to check the colorrows status.  We must each time check
% both if colorrows is activated and if colorgaps is.  We do this via
% macros without @ so they can be used easily in customization code.
% When and if booktabscolorgaps option is removed, we can then replace
% \sphinxifbooktabswithcolorgapsTF by \sphinxifthistablewithcolorrowsTF
\def\sphinxifbooktabswithcolorgapsTF{%
    \if1\ifspx@opt@booktabscolorgaps
        \sphinxifthistablewithcolorrowsTF{1}{0}%
        \else0\fi
         \expandafter\@firstoftwo
    \else\expandafter\@secondoftwo
    \fi
}
% as this is done without "@" it can be relatively easily be overwritten
% by user in customization code
\def\sphinxbooktabstoprule{%
    \sphinxifbooktabswithcolorgapsTF
    {\sphinxbooktabsspecialtoprule}%
    {\toprule}%
}%
\def\sphinxbooktabscolorgapsoverhang{0.1pt}% avoid pixel/rounding effects
% auxiliary fork
\long\def\spx@table@crazyfork
     #1\endfirsthead\endhead\sphinxtableatstartofbodyhook#2#3\@nil{#2}
% we fetch the next token to check if there is a header or not
% this is a bit fragile as it relies on the table templates
% and it assumes this token #1 is never braced...
% let's make this \long in case #1 is \par (should not be)
\long\def\sphinxbooktabsspecialtoprule\sphinxtabletoprulehook#1{%
    \specialrule{\heavyrulewidth}{\abovetopsep}{\z@}%
    % this macro contains colour init code (and defines sphinxTableRowColor)
    \sphinxtabletoprulehook
    % unfortunately colortbl provides no way to save/restore the
    % \arrayrulecolor status, we have to code it ourselves
    \noalign{\global\let\spx@@saved@CT@arc@\CT@arc@
% \@declaredcolor is not \long.  Although #1 can probably never be \par with
% our templates, let's be cautious and not use the creazyfork inside the \color
                  \spx@table@crazyfork
% this crazy code checks if #1 is one of \endfirsthead, \endhead or
% \sphinxtableatstartofbodyhook, as criterion for table with no header
             #1\endhead\sphinxtableatstartofbodyhook\@secondoftwo
             \endfirsthead#1\sphinxtableatstartofbodyhook\@secondoftwo
             \endfirsthead\endhead#1\@secondoftwo
             \endfirsthead\endhead\sphinxtableatstartofbodyhook\@firstoftwo
                  \@nil
             {\gdef\CT@arc@{\color{sphinxTableRowColor}}}%
             {\gdef\CT@arc@{\color{sphinxTableRowColorOdd}}}%
            }% end of \noalign
    % \specialrule uses \noalign itself
    \specialrule{\dimexpr\belowrulesep+\sphinxbooktabscolorgapsoverhang\relax}%
                {\z@}{-\sphinxbooktabscolorgapsoverhang}%
    \noalign{\global\let\CT@arc@\spx@@saved@CT@arc@}%
    #1% let's not forget to re-insert this #1 in token stream
      % fortunately longtable's \endfirsthead/\endhead are not delimiters but
      % are really tokens awaiting expansion...
}%
\def\sphinxbooktabsmidrule{%
   \sphinxifbooktabswithcolorgapsTF
   {\sphinxbooktabsspecialmidrule}%
   {\midrule}%
}%
\def\sphinxbooktabsspecialmidrule{%
   \noalign{\global\let\spx@@saved@CT@arc@\CT@arc@
            \gdef\CT@arc@{\color{sphinxTableRowColor}}% this is RowColorHeader
   }%
   \specialrule{\dimexpr\aboverulesep+\sphinxbooktabscolorgapsoverhang\relax\relax}%
               {-\sphinxbooktabscolorgapsoverhang}{\z@}%
   \noalign{\global\let\CT@arc@\spx@@saved@CT@arc@}%
   \specialrule{\lightrulewidth}{\z@}{\z@}%
   \noalign{\gdef\CT@arc@{\color{sphinxTableRowColorOdd}}}%
   \specialrule{\dimexpr\belowrulesep+\sphinxbooktabscolorgapsoverhang\relax\relax}%
               {\z@}{-\sphinxbooktabscolorgapsoverhang}%
   \noalign{\global\let\CT@arc@\spx@@saved@CT@arc@}%
}%
\def\sphinxbooktabsbottomrule{%
   \sphinxifbooktabswithcolorgapsTF
   {\sphinxbooktabsspecialbottomrule}%
   {\bottomrule}%
}%
% The colour here is already updated because of the \\ before so we must
% execute again the colour selection code, but this is not too complicated.
% What is annoying though is that \sphinxbottomrule in the longtable context
% appears both in the "foot" part and after the last body row.  For the first
% occurrence the \rownum could be arbitrary if it had not been reset by each
% table using it via the \sphinxtableafterendhook (see above).  This avoids
% having to modify the longtable template.  But as \rownum is thus 0 in the
% "foot", the \sphinxSwitchCaseRowColor has to know how to handle negative
% inputs (in fact the -1 value), the Sphinx definition has no issue with that
% but any redefinition must be aware of this constraint.
\def\sphinxbooktabsspecialbottomrule{%
   \noalign{\global\let\spx@@saved@CT@arc@\CT@arc@
            \sphinxSwitchCaseRowColor{\numexpr\rownum-\@ne\relax}%
            \gdef\CT@arc@{\color{sphinxTableRowColor}}%
   }%
   \specialrule{\dimexpr\aboverulesep+\sphinxbooktabscolorgapsoverhang\relax}%
               {-\sphinxbooktabscolorgapsoverhang}{\z@}%
   \noalign{\global\let\CT@arc@\spx@@saved@CT@arc@}%
   \specialrule{\heavyrulewidth}{\z@}{\belowbottomsep}%
}%
%
% MEMO: with longtable \sphinxtoprule, \sphinxmidrule and \sphinxbottomrule
% are evaluated at time of constructing the headers and footers as boxes
% (already typeset material and expanded macros; \sphinxbottomrule is also
% evaluated at very end of table body, i.e. "normally").  So the used colour
% to fill the booktabs gaps is decided during the headers and footers
% construction by longtable.  Actually they are expanded twice: in firsthead
% then in head, respectively in foot and lastfoot.  But in current design the
% header row colours are fixed, not alternating, so there is at least no
% coherence issue there.

% The \spx@arrayrulewidth is used for some complex matters of merged
% cells size computations.
% tabularcolumns argument will override any global or local style and
% trigger the appropriate adjustment of \spx@arrayrulewidth.
% Notice that this will be bad if the table uses booktabs style
% but anyhow table with booktabs should not use any | separator.
\def\sphinxthistablewithvlinesstyle{%
    \def\spx@arrayrulewidth{\arrayrulewidth}%
    \let\sphinxvlinecrossing\sphinxtablevlinecrossing
    \let\sphinxfixclines    \sphinxtablefixclines
}%
\def\sphinxthistablewithnovlinesstyle{%
    \def\spx@arrayrulewidth{\z@}%
    \let\sphinxvlinecrossing\@gobble
    % let's not bother to modify \sphinxfixclines, it works fine and is
    % useful in standard style + no vline (only hlines and clines);
    % besides, only one of vline or novline style macro is executed
}%

% default is the standard style
\def\sphinxthistablewithglobalstyle{\sphinxthistablewithstandardstyle}

\ifspx@opt@booktabs
    \RequirePackage{booktabs}
    \def\sphinxthistablewithglobalstyle{\sphinxthistablewithbooktabsstyle}
\fi
\ifspx@opt@borderless
    \def\sphinxthistablewithglobalstyle{\sphinxthistablewithborderlessstyle}
\fi
% colorrows appends to the current globalstyle (standard, booktabs, or borderless)
\ifspx@opt@colorrows % let the globalstyle trigger the colorrows style on top of it
    \expandafter\def\expandafter\sphinxthistablewithglobalstyle\expandafter
    {\sphinxthistablewithglobalstyle
     \sphinxthistablewithcolorrowsstyle
    }
\fi


\endinput
