tabu (15nov10)

git-svn-id: svn://tug.org/texlive/trunk@20451 c570f23f-e606-0410-a88d-b1316a301751

5 files changed, 232 insertions, 205 deletions

diff --git a/Master/texmf-dist/doc/latex/tabu/tabu.pdf b/Master/texmf-dist/doc/latex/tabu/tabu.pdf
index 79180f4bc06..4248c052a22 100644
--- a/Master/texmf-dist/doc/latex/tabu/tabu.pdf
+++ b/Master/texmf-dist/doc/latex/tabu/tabu.pdf
diff --git a/Master/texmf-dist/source/latex/tabu/tabu.drv b/Master/texmf-dist/source/latex/tabu/tabu.drv
index 403bd0672c8..8b67146f46b 100644
--- a/Master/texmf-dist/source/latex/tabu/tabu.drv
+++ b/Master/texmf-dist/source/latex/tabu/tabu.drv
@@ -8,7 +8,7 @@
 %% 
 %% This is a generated file.
 %% 
-%% tabu : 2010/10/27 v1.1 - tabu : Flexible LaTeX tabulars
+%% tabu : 2010/11/15 v1.2 - tabu : Flexible LaTeX tabulars
 %% 
 %% This work may be distributed and/or modified under the
 %% conditions of the LaTeX Project Public License, either
@@ -25,8 +25,8 @@
 %% 
 \edef\thisfile{\jobname}
 \def\thisinfo{Flexible \LaTeX{} tabulars (\FC)}
-\def\thisdate{2010/10/28}
-\def\thisversion{1.1}
+\def\thisdate{2010/11/15}
+\def\thisversion{1.2}
 \def\CTANbaseurl{http://www.ctan.org/tex-archive/macros/latex}
 \def\CTANdisplay{CTAN:macros/latex}
 \makeatletter\protected\def\CTANhref{\@ifstar\CTANhrefstar\CTANhrefnost}\makeatother
@@ -45,7 +45,7 @@
 \usepackage{tocloft,titlesec,hypbmsec,fancyhdr,enumitem,multirow,makecell,tabularx,booktabs,delarray,ragged2e,colortbl,marginnote,shapepar}
 \heavyrulewidth=.7pt
 \usepackage{holtxdoc,bookmark}
-\usepackage{interfaces}[2010/10/31]
+\usepackage{interfaces}[2010/11/15]
 \usetikz{basic,chains,positioning}
 \usepackage{embedfile}
 \RequirePackage{amsopn,amsmath}% \DeclareMathOperator
diff --git a/Master/texmf-dist/source/latex/tabu/tabu.dtx b/Master/texmf-dist/source/latex/tabu/tabu.dtx
index cb70b0226da..16717a66ac4 100644
--- a/Master/texmf-dist/source/latex/tabu/tabu.dtx
+++ b/Master/texmf-dist/source/latex/tabu/tabu.dtx
@@ -1,5 +1,5 @@
 % \iffalse meta-comment
-% tabu : 2010/10/27 v1.1 - tabu: flexible LaTeX tabulars]
+% tabu : 2010/11/15 v1.2 - tabu: flexible LaTeX tabulars]
 %
 % This work may be distributed and/or modified under the
 % conditions of the LaTeX Project Public License, either
@@ -36,7 +36,7 @@
 \input docstrip.tex
 \Msg{************************************************************************}
 \Msg{* Installation}
-\Msg{* Package: 2010/10/27 v1.1 - tabu: Flexible LaTeX tabulars}
+\Msg{* Package: 2010/11/15 v1.2 - tabu: Flexible LaTeX tabulars}
 \Msg{************************************************************************}
 
 \keepsilent
@@ -47,7 +47,7 @@
 
 This is a generated file.
 
-tabu : 2010/10/27 v1.1 - tabu : Flexible LaTeX tabulars
+tabu : 2010/11/15 v1.2 - tabu : Flexible LaTeX tabulars
 
 This work may be distributed and/or modified under the
 conditions of the LaTeX Project Public License, either
@@ -98,8 +98,8 @@ Copyright (C) 2010 by Florent Chervet <florent.chervet@free.fr>
 %<*driver>
 \edef\thisfile{\jobname}
 \def\thisinfo{Flexible \LaTeX{} tabulars (\FC)}
-\def\thisdate{2010/10/28}
-\def\thisversion{1.1}
+\def\thisdate{2010/11/15}
+\def\thisversion{1.2}
 \def\CTANbaseurl{http://www.ctan.org/tex-archive/macros/latex}
 \def\CTANdisplay{CTAN:macros/latex}
 \makeatletter\protected\def\CTANhref{\@ifstar\CTANhrefstar\CTANhrefnost}\makeatother
@@ -118,7 +118,7 @@ Copyright (C) 2010 by Florent Chervet <florent.chervet@free.fr>
 \usepackage{tocloft,titlesec,hypbmsec,fancyhdr,enumitem,multirow,makecell,tabularx,booktabs,delarray,ragged2e,colortbl,marginnote,shapepar}
 \heavyrulewidth=.7pt
 \usepackage{holtxdoc,bookmark}
-\usepackage{interfaces}[2010/10/31]
+\usepackage{interfaces}[2010/11/15]
 \usetikz{basic,chains,positioning}
 \usepackage{embedfile}
 \RequirePackage{amsopn,amsmath}% \DeclareMathOperator
@@ -150,7 +150,7 @@ Copyright (C) 2010 by Florent Chervet <florent.chervet@free.fr>
 %</driver>
 % \fi
 %
-% \CheckSum{3457}
+% \CheckSum{3471}
 %
 % \CharacterTable
 %  {Upper-case    \A\B\C\D\E\F\G\H\I\J\K\L\M\N\O\P\Q\R\S\T\U\V\W\X\Y\Z
@@ -258,7 +258,7 @@ Copyright (C) 2010 by Florent Chervet <florent.chervet@free.fr>
 %    }\expandafter\thisyear\thisdate\@nil
 % }
 % \renewrobustcmd\declcs[2][]{^^A
-%   \par\addvspace\parskip^^A{.5ex plus 1ex}\noindent
+%   \par\addvspace\parskip
 %   \goodbreak
 %   \noindent\larger\changefont{spread=1}^^A
 %   \hspace{-\leftmargini}^^A
@@ -379,9 +379,9 @@ Copyright (C) 2010 by Florent Chervet <florent.chervet@free.fr>
 % provided that they do not split across pages.
 %
 % \textt{tabu} is more flexible that \textt{tabular}, \textt{tabular*}, \textt{tabularx}
-% and \textt{array} and extend the possibilities. All tabulars in this document were made
+% and \textt{array} and extends the possibilities. All tabulars in this document were made
 % with the \textt{tabu} environment. Last (but not least) \textt{tabu} is more than compatible
-% with any package that provide commands to format tabulars.
+% with any package that provides commands to format tabulars.
 % Indeed, \thispackage{} \textbf{does not modify any of the macros of \xfile{array.sty}.} All
 % functionalities are obtained with only two modifications\footnote{\cs{prepnext@tok} and \cs{save@decl}.
 % See ``\nameref{sec:light package option}''.} which are loaded only inside
@@ -445,7 +445,7 @@ Copyright (C) 2010 by Florent Chervet <florent.chervet@free.fr>
 %        \textt{tabularx} or \textt{tabu} itself can be placed in any cell of a \textt{tabu}. Conversely,
 %        \textt{tabu} can be placed in a \textt{tabular}, \textt{tabularx} \etc.
 %  \item \textt{tabu} introduces optional parameters to columns specifications, providing facilities
-%         for modifying columns of line widths, inserting verbatim text...
+%         for modifying columns or line widths, inserting verbatim text...
 %  \item \textt{tabu} is more than compatible with \xpackage{arydshln} (for dashed and dotted lines)
 %        and \xpackage{colortbl}: actually some corrections of those packages are loaded as soon as you
 %        enter a \textt{tabu} environment. Compatibility with \xpackage{delarray}, \xpackage{hhline},
@@ -597,6 +597,7 @@ Copyright (C) 2010 by Florent Chervet <florent.chervet@free.fr>
 %
 % This section should contain some examples but I've no time presently...
 %
+%
 % \subsection{Lines inside \textt{tabu}}
 %
 % \subsubsection{First important remarks}
@@ -620,7 +621,7 @@ Copyright (C) 2010 by Florent Chervet <florent.chervet@free.fr>
 % Example:
 %
 % {\tabcolsep=3pt
-% \begin{tabu}to\linewidth{@{}X[3mc]X[3m]X[6m]@{}} \toprule
+% \begin{tabu}{@{}X[3mc]X[3m]X[6m]@{}} \toprule
 %     \begin{tabu}{||[5pt]|c|c||[5pt]|}
 %        Hello & World
 %     \end{tabu}
@@ -711,12 +712,12 @@ Copyright (C) 2010 by Florent Chervet <florent.chervet@free.fr>
 % &
 % \extrarowheight=8pt
 % \begin{tabu}{|[1pt]X|X|[1pt]} \tabucline*-
-% Hello & world \\ \tabucline*[1pt on 2pt off 2pt blue]- ^^A\tabucline*[3pt on 3pt off 3pt]-
+% Hello & world \\ \tabucline*[1pt on 2pt off 2pt blue]-
 % Hello & world \\  \tabucline*-
 % \end{tabu}
 % &
 % \extrarowheight=8pt
-% \begin{tabu}{|[1pt]X|X|[1pt]} \firsthline
+% \begin{tabu}[c]{|[1pt]X|X|[1pt]} \firsthline
 % Hello & world \\ \hline
 % Hello & world \\  \lasthline
 % \end{tabu} \\
@@ -990,7 +991,7 @@ Copyright (C) 2010 by Florent Chervet <florent.chervet@free.fr>
 %
 % {\centering
 % \extrarowheight=8pt
-% \begin{tabu}to .6\linewidth{X[m]} \toprule
+% \begin{tabu}to .6\linewidth{X[m]} \tabucline-
 %
 % \extrarowheight=0pt
 % \begin{tabu}({X})
@@ -1360,7 +1361,7 @@ Copyright (C) 2010 by Florent Chervet <florent.chervet@free.fr>
 % \subsection(arydshln @ columns){Correction for arydshln: \texttbf @ columns}
 %
 % A bug in \cs{adl@xarraydashrule}: \textt{!-arg} columns (class 1) and \textt{@-arg} columns (class 5) should be treated
-% the same wat as far as rules are concerned.
+% the same as far as rules are concerned.
 %
 % With this correction, the \textbf{known problem number 1} in \xpackage{arydshln} documentation is solved.
 %
@@ -1396,7 +1397,7 @@ Copyright (C) 2010 by Florent Chervet <florent.chervet@free.fr>
 %    \begin{macrocode}
 %<*package>
 \NeedsTeXFormat{LaTeX2e}[2005/12/01]
-\ProvidesPackage{tabu}[2010/10/28 v1.1 - flexible LaTeX tabulars (FC)]
+\ProvidesPackage{tabu}[2010/11/15 v1.2 - flexible LaTeX tabulars (FC)]
 \RequirePackage{array}[2008/09/09]
 %    \end{macrocode}
 %
@@ -1447,7 +1448,7 @@ Copyright (C) 2010 by Florent Chervet <florent.chervet@free.fr>
 %    \end{macrocode}
 %    \end{macro}
 %
-%    \begin{macro}{\light (package option)}
+%    \begin{macro}{light (package option)}
 %    \begin{macrocode}
 \DeclareOption{light}{%
    \AtEndOfPackage{%
@@ -1607,6 +1608,7 @@ Copyright (C) 2010 by Florent Chervet <florent.chervet@free.fr>
 %
 %    \begin{macrocode}
 \newcommand\tabu@NC@rewrite@X[1][]{\tabu@rewrite@X{#1}%
+                                 \let\@halignto \relax
                   \expandafter \NC@find \tabucolX@spec}
 %    \end{macrocode}
 %    \end{macro}
@@ -1702,9 +1704,10 @@ Copyright (C) 2010 by Florent Chervet <florent.chervet@free.fr>
 \expandafter\def\csname NC@find@\string\tabu@rewritelast\endcsname
                                           #1\tabu@rewritelast{\NC@{#1}}
 \def\tabu@rewritelast{%
-   \ifx \@halignto\relax \let\tabu@temp \@empty
+   \ifx \@halignto\relax   % found a X column
+      \let\tabu@temp \@empty
+      \aftergroup \tabu@addphantomline
    \else
-      \let\@halignto \tabu@halignto
       \ifdim \tabu@target=\z@ \let\tabu@temp \@empty
       \else
          \if |\noexpand\tabu@temp \def\tabu@temp{@{\extracolsep\@flushglue}}\else
@@ -1712,6 +1715,7 @@ Copyright (C) 2010 by Florent Chervet <florent.chervet@free.fr>
                                   \def\tabu@temp{!{\extracolsep\@flushglue}}\fi\fi
       \fi
    \fi
+   \let\@halignto \tabu@halignto
    \expandafter\NC@find \tabu@temp
 }% \tabu@rewritelast
 %    \end{macrocode}
@@ -1760,11 +1764,17 @@ Copyright (C) 2010 by Florent Chervet <florent.chervet@free.fr>
 \def\tabu@phantomline{\noalign{%
    \global\everycr{}%
    \global\setbox\tabu@box\box\@arstrutbox
+   \global\let\tabu@minrowclearance \minrowclearance
+   \global\let\minrowclearance \z@
+   \global\let\tabu@temp \vcenter
+   \global\let\vcenter \vbox
    \toks@{}\count@\@ne
    \@whilenum\count@<\tabu@nbcols\do{\advance\count@\@ne
                         \toks@\expandafter{\the\toks@&}}%
    \toks@\expandafter{\the\toks@
-      \cr\noalign{\global\setbox\@arstrutbox\box\tabu@box}}%
+      \cr\noalign{\global\setbox\@arstrutbox\box\tabu@box
+         \global\let\minrowclearance \tabu@minrowclearance
+         \global\let\vcenter \tabu@temp}}%
    \expandafter}\the\toks@
 }% \tabu@phantomline
 %    \end{macrocode}
@@ -1803,6 +1813,7 @@ Copyright (C) 2010 by Florent Chervet <florent.chervet@free.fr>
    \let\adl@xarraydashrule \tabu@adl@xarraydashrule % <fix> arydshln
    \let\adl@act@endpbox \tabu@adl@act@endpbox       % <fix> arydshln
    \let\adl@act@@endpbox \tabu@adl@act@endpbox      % <fix> arydshln
+   \let\@preamerror \@preamerr                      % <fix> arydshln
    \let\endarray \tabu@endarray          % <fix> colortbl & arydshln (delarray)
    \let\tabu@global@temp \@empty \let\tabu@global@X \@empty
    \ifx\verbatim \tabu@sanitizetext
@@ -2114,6 +2125,7 @@ Copyright (C) 2010 by Florent Chervet <florent.chervet@free.fr>
    \fi
 }% \tabu@rewrite@X
 %    \end{macrocode}
+%
 %    \begin{macro}{\tabu@rewrite@Xnested}
 %
 %    This macro replaces \cs{tabu@rewrite@X} when \textt{tabu} makes a trial for \textt X columns.
@@ -2124,11 +2136,7 @@ Copyright (C) 2010 by Florent Chervet <florent.chervet@free.fr>
 %
 %    \begin{macrocode}
 \def\tabu@rewrite@Xnested#1{\def\tabucolX@spec{p{\tabucolX}}}
-\def\tabu@rewrite@Xrestore#1{\tabu@Xarg{#1}\let\tabucolX@spec\tabu@temp
-   \iftabu@measuring \else \tabu@measuringtrue \aftergroup\tabu@usetabuX \fi}%
-\def\tabu@usetabuX{%
-   \tabu@everycr\expandafter{\the\tabu@everycr\tabu@phantomline}%
-}% \tabu@usetabuX
+\def\tabu@rewrite@Xrestore#1{\tabu@Xarg{#1}\let\tabucolX@spec\tabu@temp}%
 %    \end{macrocode}
 %    \end{macro}
 %    \end{macro}
@@ -2154,7 +2162,7 @@ Copyright (C) 2010 by Florent Chervet <florent.chervet@free.fr>
       \xdef\tabu@global@X{%
          \tabu@X@sum \the\tabu@X@sum\relax
          \tabu@target \the\tabu@target\relax}%
-      \let \@halignto \relax
+      \let\tabu@halignto \relax
       \aftergroup \tabu@prep@TRIAL
    \fi
 }% \tabu@rewrite@Xto
@@ -2185,7 +2193,7 @@ Copyright (C) 2010 by Florent Chervet <florent.chervet@free.fr>
          \tabu@target \the\tabu@target\relax
          \tabu@spreadtarget \the\tabu@spreadtarget\relax
          \def\csname tabu@X\the\tabu@X@cols\endcsname{\strip@pt\tabu@X@sum}}%
-      \let\@halignto \relax
+      \let\tabu@halignto \relax
       \aftergroup \tabu@prep@TRIAL
    \fi
 }% \tabu@rewrite@Xspread
@@ -2359,7 +2367,7 @@ Copyright (C) 2010 by Florent Chervet <florent.chervet@free.fr>
 %    \begin{macrocode}
 \def\tabu@arrayleft@measure#1\bgroup{%
   \def\tabu@Xfinish{\ifnum0=`{\fi}\tabu@global@X
-         \let\@halignto\tabu@halignto \tabu@firstclinetrue  #1\bgroup}%
+         \let\@halignto\tabu@halignto \tabu@firstcline  #1\bgroup}%
   \toks@{\let\@preamble\tabu@savedpreamble}% <required for multicolumn>
   \tabu@collect
 }% \tabu@arrayleft@measure
@@ -2574,78 +2582,6 @@ Copyright (C) 2010 by Florent Chervet <florent.chervet@free.fr>
 %    \end{macro}
 %    \end{macro}
 %
-% \subsection{Numbers in \textt{tabu}}
-%
-% \subsubsection{\cs{tabudecimal}}
-%
-%    \begin{macro}{\tabudecimal}
-%    \begin{macrocode}
-\def\tabu@tabudecimal#1{%
-   \def\tabu@decimal{#1}\@temptokena{}%
-   \let\tabu@getdecimal@ \tabu@getdecimal@ignorespaces
-   \tabu@scandecimal
-}% \tabudecimal
-\def\tabu@scandecimal{\futurelet \tabu@temp \tabu@getdecimal@}
-\def\tabu@skipdecimal#1{#1\tabu@scandecimal}
-\def\tabu@getdecimal@ignorespaces{%
-   \ifcase 0\ifx\tabu@temp\ignorespaces\else
-            \ifx\tabu@temp\@sptoken1\else
-            2\fi\fi\relax
-      \let\tabu@getdecimal@ \tabu@getdecimal
-      \expandafter\tabu@skipdecimal
-   \or \expandafter\tabu@gobblespace\expandafter\tabu@scandecimal
-   \else \expandafter\tabu@skipdecimal
-   \fi
-}% \tabu@getdecimal@ignorespaces
-\def\tabu@get@decimal#1{\@temptokena\expandafter{\the\@temptokena #1}%
-                        \tabu@scandecimal}
-\def\do#1{%
-   \def\tabu@get@decimalspace#1{%
-      \@temptokena\expandafter{\the\@temptokena #1}\tabu@scandecimal}%
-}\do{ }
-%    \end{macrocode}
-%    \end{macro}
-%
-%    \begin{macro}{\tabu@getdecimal}
-%    \begin{macrocode}
-\def\tabu@getdecimal{%
-   \ifcase    0\ifx 0\tabu@temp\else
-               \ifx 1\tabu@temp\else
-               \ifx 2\tabu@temp\else
-               \ifx 3\tabu@temp\else
-               \ifx 4\tabu@temp\else
-               \ifx 5\tabu@temp\else
-               \ifx 6\tabu@temp\else
-               \ifx 7\tabu@temp\else
-               \ifx 8\tabu@temp\else
-               \ifx 9\tabu@temp\else
-               \ifx .\tabu@temp\else
-               \ifx ,\tabu@temp\else
-               \ifx -\tabu@temp\else
-               \ifx +\tabu@temp\else
-               \ifx e\tabu@temp\else
-               \ifx E\tabu@temp\else
-               \ifx\tabu@cellleft\tabu@temp1\else
-               \ifx\ignorespaces\tabu@temp1\else
-               \ifx\@sptoken\tabu@temp2\else
-            3\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\relax
-       \expandafter\tabu@get@decimal
-   \or \expandafter\tabu@skipdecimal
-   \or \expandafter\tabu@get@decimalspace
-   \else\expandafter\tabu@printdecimal
-   \fi
-}% \tabu@getdecimal
-\def\tabu@printdecimal{%
-   \edef\tabu@temp{\the\@temptokena}%
-   \ifx\tabu@temp\@empty\else
-   \ifx\tabu@temp\space\else
-      \expandafter\tabu@decimal\expandafter{\the\@temptokena}%
-   \fi\fi
-}% \tabu@printdecimal
-%    \end{macrocode}
-%    \end{macro}
-%
-%
 % \subsection(Lines inside tabu){Lines inside \textt{tabu}}
 %
 % \subsubsection{Vertical lines}
@@ -2710,20 +2646,23 @@ Copyright (C) 2010 by Florent Chervet <florent.chervet@free.fr>
 %    \end{macrocode}
 %    \end{macro}
 %
+%
 % \subsubsection{Horizontal lines: \cs{tabucline}}
 %
 %    \begin{macro}{\tabu@firstcline}
 %    \begin{macrocode}
 \def\tabu@firstcline{%
    \tabu@firstclinetrue
-   \let\tabu@everycr\everycr
-   \def\tabu@restoreeverycr{\let\everycr\tabu@everycr}%
+   \let\tabu@everycr \everycr
+   \def\tabu@restoreeverycr {\let\everycr\tabu@everycr}%
    \def\everycr{\afterassignment\tabu@restoreeverycr\@temptokena}% <for ialign>
    \tabu@everycr{\noalign{%
       \global\tabu@everycr{\noalign{%
             \global\tabu@everycr{}\global\tabu@firstclinefalse}}%
       \global\let\everycr\tabu@everycr}}%
 }% \tabu@firstcline
+\def\tabu@addphantomline{\tabu@everycr\expandafter{\the\tabu@everycr
+                                                 \tabu@phantomline}}
 %    \end{macrocode}
 %    \end{macro}
 %
@@ -2753,7 +2692,7 @@ Copyright (C) 2010 by Florent Chervet <florent.chervet@free.fr>
                               \toks@\expandafter{\the\toks@ &}}%
       \loop
          \toks@\expandafter{\the\toks@ \omit }%
-         \ifcase 0\if@tempswa\else\ifnum \@multicnt>\tabu@start 1\fi\fi\relax
+         \ifnum \@multicnt=\@ne
          \expandafter \tabu@add \csname tabu@tok@\the\@multicnt L\endcsname \@nil
          \fi
          \ifcase 0\if@tempswa\else\ifnum \@multicnt<\tabu@stop 1\fi\fi\relax
@@ -2812,8 +2751,8 @@ Copyright (C) 2010 by Florent Chervet <florent.chervet@free.fr>
    \ifx\@tempa\hbox  \tabu@defleaders{#1}\else
    \ifx\@tempa\box   \tabu@defleaders{#1}\else
    \ifx\@tempa\copy  \tabu@defleaders{#1}\else
-   \ifcsname tabu@line@style@\string#1\endcsname
-      \csname tabu@line@style@\string#1\endcsname
+   \ifcsname tabu@line@style@\detokenize{#1}\endcsname
+      \csname tabu@line@style@\detokenize{#1}\endcsname
    \else \tabu@getline{#1\p@ on0pt off0pt}\fi\fi\fi\fi\fi
 }% \tabu@getlinespec
 \def\tabu@defleaders#1{%
@@ -2865,11 +2804,11 @@ Copyright (C) 2010 by Florent Chervet <florent.chervet@free.fr>
          \ifdim\@tempdimc>\z@
             \hbox\bgroup \kern\the\dimexpr\@tempdimc/2\relax\fi
          \noexpand\iftabu@firstcline
-         \vrule depth\the\@tempdima
+         \vrule depth\dimexpr\the\@tempdima
                 \ifdim\@tempdimb>\z@ width\the\@tempdimb\fi
          \noexpand\else
          \vrule height\dimexpr-\extrarowheight+\the\@tempdima
-                depth\extrarowheight
+                depth\dimexpr\extrarowheight
                \ifdim\@tempdimb>\z@ width\the\@tempdimb\fi
          \noexpand\fi
          \ifdim\@tempdimc>\z@
@@ -2915,7 +2854,7 @@ Copyright (C) 2010 by Florent Chervet <florent.chervet@free.fr>
 \def\tabulinestyle#1{\@for\@tempa:=#1\do{\expandafter\tabu@linestyle\@tempa==\@nil}}
 \def\tabu@linestyle#1=#2=#3\@nil{%
    \begingroup \tabu@getlinespec {#2}\expandafter\gdef
-         \csname tabu@line@style@\string#1\expandafter\endcsname
+         \csname tabu@line@style@\detokenize{#1}\expandafter\endcsname
                      \expandafter{\expandafter\def\expandafter\tabu@xleaders
                                                 \expandafter{\tabu@xleaders}}%
    \endgroup
@@ -2950,6 +2889,77 @@ Copyright (C) 2010 by Florent Chervet <florent.chervet@free.fr>
 %    \end{macrocode}
 %    \end{macro}
 %
+% \subsection{Numbers in \textt{tabu}}
+%
+% \subsubsection{\cs{tabudecimal}}
+%
+%    \begin{macro}{\tabudecimal}
+%    \begin{macrocode}
+\def\tabu@tabudecimal#1{%
+   \def\tabu@decimal{#1}\@temptokena{}%
+   \let\tabu@getdecimal@ \tabu@getdecimal@ignorespaces
+   \tabu@scandecimal
+}% \tabudecimal
+\def\tabu@scandecimal{\futurelet \tabu@temp \tabu@getdecimal@}
+\def\tabu@skipdecimal#1{#1\tabu@scandecimal}
+\def\tabu@getdecimal@ignorespaces{%
+   \ifcase 0\ifx\tabu@temp\ignorespaces\else
+            \ifx\tabu@temp\@sptoken1\else
+            2\fi\fi\relax
+      \let\tabu@getdecimal@ \tabu@getdecimal
+      \expandafter\tabu@skipdecimal
+   \or \expandafter\tabu@gobblespace\expandafter\tabu@scandecimal
+   \else \expandafter\tabu@skipdecimal
+   \fi
+}% \tabu@getdecimal@ignorespaces
+\def\tabu@get@decimal#1{\@temptokena\expandafter{\the\@temptokena #1}%
+                        \tabu@scandecimal}
+\def\do#1{%
+   \def\tabu@get@decimalspace#1{%
+      \@temptokena\expandafter{\the\@temptokena #1}\tabu@scandecimal}%
+}\do{ }
+%    \end{macrocode}
+%    \end{macro}
+%
+%    \begin{macro}{\tabu@getdecimal}
+%    \begin{macrocode}
+\def\tabu@getdecimal{%
+   \ifcase    0\ifx 0\tabu@temp\else
+               \ifx 1\tabu@temp\else
+               \ifx 2\tabu@temp\else
+               \ifx 3\tabu@temp\else
+               \ifx 4\tabu@temp\else
+               \ifx 5\tabu@temp\else
+               \ifx 6\tabu@temp\else
+               \ifx 7\tabu@temp\else
+               \ifx 8\tabu@temp\else
+               \ifx 9\tabu@temp\else
+               \ifx .\tabu@temp\else
+               \ifx ,\tabu@temp\else
+               \ifx -\tabu@temp\else
+               \ifx +\tabu@temp\else
+               \ifx e\tabu@temp\else
+               \ifx E\tabu@temp\else
+               \ifx\tabu@cellleft\tabu@temp1\else
+               \ifx\ignorespaces\tabu@temp1\else
+               \ifx\@sptoken\tabu@temp2\else
+            3\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\relax
+       \expandafter\tabu@get@decimal
+   \or \expandafter\tabu@skipdecimal
+   \or \expandafter\tabu@get@decimalspace
+   \else\expandafter\tabu@printdecimal
+   \fi
+}% \tabu@getdecimal
+\def\tabu@printdecimal{%
+   \edef\tabu@temp{\the\@temptokena}%
+   \ifx\tabu@temp\@empty\else
+   \ifx\tabu@temp\space\else
+      \expandafter\tabu@decimal\expandafter{\the\@temptokena}%
+   \fi\fi
+}% \tabu@printdecimal
+%    \end{macrocode}
+%    \end{macro}
+%
 %
 % \subsection{\cs{savetabu}}
 %
@@ -3133,9 +3143,6 @@ Copyright (C) 2010 by Florent Chervet <florent.chervet@free.fr>
    \else
       \ifcase \numexpr \count@-\@tempcnta \relax % (case 0): prev. token is left
          \advance \tabu@nbcols\@ne
-         \ifnum \tabu@nbcols>\@ne
-         \expandafter\let\csname tabu@tok@\the\tabu@nbcols L\endcsname \relax
-         \fi
          \expandafter\let\csname tabu@tok@\the\tabu@nbcols R\endcsname \relax
          \expandafter\gdef\expandafter\tabu@global@temp\expandafter{%
                            \tabu@global@temp \advance\tabu@nbcols\@ne}%
@@ -3143,17 +3150,21 @@ Copyright (C) 2010 by Florent Chervet <florent.chervet@free.fr>
             \tabu@cellrightfalse % <only once>
             \tabu@savetok R\tabu@preptokenright
          \fi
-         \tabu@savetok L\tabu@preptokenleft
+         \ifnum \tabu@nbcols=\@ne
+            \tabu@savetok L% LEFT token is always empty unless >{...}
+         \fi
+         \tabu@preptokenleft
       \or                     % (case 1) previous token is right
          \tabu@savetok R\tabu@cellrighttrue
       \else % special column: do not change the token
          \ifnum \tabu@nbcols>\z@ %special column: always on the right of normal one
+            \tabu@savetok R%
          \else % unless this is the very first column (\tabu@nbcols=0)
             \advance\tabu@nbcols\@ne \tabu@savetok L\advance\tabu@nbcols\m@ne
          \fi
          \iftabu@cellright    % before-previous token is right
             \tabu@cellrightfalse
-            \tabu@savetok R\tabu@preptokenright
+            \tabu@preptokenright
          \fi
       \fi % \ifcase
    \fi
@@ -3507,8 +3518,15 @@ Copyright (C) 2010 by Florent Chervet <florent.chervet@free.fr>
 %
 % \begin{History}
 %
+%   \begin{Version}{2010/11/15 v1.2}
+%   \item Improvement in parameters parsing for optional parameters (\textt\textbar\ and \cs{tabucline}).
+%   \item Modification / optimization in \cs{tabu@prepnext@tok}.
+%   \item Modification of \cs{tabucline} to get better results with \textt m columns (\textt{X[m]})
+%         and also when \cs{minrowclearance} $>0$ (package \xpackage{colortbl}).
+%   \end{Version}
+%
 %
-%   \begin{Version}{2010/10/28 v1.0}
+%   \begin{Version}{2010/10/28 v1.1}
 %   \item First version.
 %   \end{Version}
 %
diff --git a/Master/texmf-dist/source/latex/tabu/tabu.ins b/Master/texmf-dist/source/latex/tabu/tabu.ins
index 73047d8b35b..b4ea2ecff02 100644
--- a/Master/texmf-dist/source/latex/tabu/tabu.ins
+++ b/Master/texmf-dist/source/latex/tabu/tabu.ins
@@ -8,7 +8,7 @@
 %% 
 %% This is a generated file.
 %% 
-%% tabu : 2010/10/27 v1.1 - tabu : Flexible LaTeX tabulars
+%% tabu : 2010/11/15 v1.2 - tabu : Flexible LaTeX tabulars
 %% 
 %% This work may be distributed and/or modified under the
 %% conditions of the LaTeX Project Public License, either
@@ -26,7 +26,7 @@
 \input docstrip.tex
 \Msg{************************************************************************}
 \Msg{* Installation}
-\Msg{* Package: 2010/10/27 v1.1 - tabu: Flexible LaTeX tabulars}
+\Msg{* Package: 2010/11/15 v1.2 - tabu: Flexible LaTeX tabulars}
 \Msg{************************************************************************}
 
 \keepsilent
@@ -37,7 +37,7 @@
 
 This is a generated file.
 
-tabu : 2010/10/27 v1.1 - tabu : Flexible LaTeX tabulars
+tabu : 2010/11/15 v1.2 - tabu : Flexible LaTeX tabulars
 
 This work may be distributed and/or modified under the
 conditions of the LaTeX Project Public License, either
diff --git a/Master/texmf-dist/tex/latex/tabu/tabu.sty b/Master/texmf-dist/tex/latex/tabu/tabu.sty
index 750a4286675..ff5e802d2a8 100644
--- a/Master/texmf-dist/tex/latex/tabu/tabu.sty
+++ b/Master/texmf-dist/tex/latex/tabu/tabu.sty
@@ -8,7 +8,7 @@
 %% 
 %% This is a generated file.
 %% 
-%% tabu : 2010/10/27 v1.1 - tabu : Flexible LaTeX tabulars
+%% tabu : 2010/11/15 v1.2 - tabu : Flexible LaTeX tabulars
 %% 
 %% This work may be distributed and/or modified under the
 %% conditions of the LaTeX Project Public License, either
@@ -25,7 +25,7 @@
 %% 
 
 \NeedsTeXFormat{LaTeX2e}[2005/12/01]
-\ProvidesPackage{tabu}[2010/10/28 v1.1 - flexible LaTeX tabulars (FC)]
+\ProvidesPackage{tabu}[2010/11/15 v1.2 - flexible LaTeX tabulars (FC)]
 \RequirePackage{array}[2008/09/09]
 \AtEndOfPackage{\tabu@AtEnd\let\tabu@AtEnd\@undefined}
 \let\tabu@AtEnd\@empty
@@ -88,6 +88,7 @@
 \newsavebox\tabu@box
 \def\tabu@gobblespace#1 {#1}
 \newcommand\tabu@NC@rewrite@X[1][]{\tabu@rewrite@X{#1}%
+                                 \let\@halignto \relax
                   \expandafter \NC@find \tabucolX@spec}
 \expandafter\def\csname NC@rewrite@\string\usetabu\endcsname#1{%
    \ifx\\#1\\\tabu@saveerr{}\else
@@ -137,9 +138,10 @@
 \expandafter\def\csname NC@find@\string\tabu@rewritelast\endcsname
                                           #1\tabu@rewritelast{\NC@{#1}}
 \def\tabu@rewritelast{%
-   \ifx \@halignto\relax \let\tabu@temp \@empty
+   \ifx \@halignto\relax   % found a X column
+      \let\tabu@temp \@empty
+      \aftergroup \tabu@addphantomline
    \else
-      \let\@halignto \tabu@halignto
       \ifdim \tabu@target=\z@ \let\tabu@temp \@empty
       \else
          \if |\noexpand\tabu@temp \def\tabu@temp{@{\extracolsep\@flushglue}}\else
@@ -147,6 +149,7 @@
                                   \def\tabu@temp{!{\extracolsep\@flushglue}}\fi\fi
       \fi
    \fi
+   \let\@halignto \tabu@halignto
    \expandafter\NC@find \tabu@temp
 }% \tabu@rewritelast
 \newtoks\tabu@everycr@tok
@@ -160,11 +163,17 @@
 \def\tabu@phantomline{\noalign{%
    \global\everycr{}%
    \global\setbox\tabu@box\box\@arstrutbox
+   \global\let\tabu@minrowclearance \minrowclearance
+   \global\let\minrowclearance \z@
+   \global\let\tabu@temp \vcenter
+   \global\let\vcenter \vbox
    \toks@{}\count@\@ne
    \@whilenum\count@<\tabu@nbcols\do{\advance\count@\@ne
                         \toks@\expandafter{\the\toks@&}}%
    \toks@\expandafter{\the\toks@
-      \cr\noalign{\global\setbox\@arstrutbox\box\tabu@box}}%
+      \cr\noalign{\global\setbox\@arstrutbox\box\tabu@box
+         \global\let\minrowclearance \tabu@minrowclearance
+         \global\let\vcenter \tabu@temp}}%
    \expandafter}\the\toks@
 }% \tabu@phantomline
 \def\tabu{%
@@ -176,6 +185,7 @@
    \let\adl@xarraydashrule \tabu@adl@xarraydashrule % <fix> arydshln
    \let\adl@act@endpbox \tabu@adl@act@endpbox       % <fix> arydshln
    \let\adl@act@@endpbox \tabu@adl@act@endpbox      % <fix> arydshln
+   \let\@preamerror \@preamerr                      % <fix> arydshln
    \let\endarray \tabu@endarray          % <fix> colortbl & arydshln (delarray)
    \let\tabu@global@temp \@empty \let\tabu@global@X \@empty
    \ifx\verbatim \tabu@sanitizetext
@@ -272,11 +282,7 @@
    \fi
 }% \tabu@rewrite@X
 \def\tabu@rewrite@Xnested#1{\def\tabucolX@spec{p{\tabucolX}}}
-\def\tabu@rewrite@Xrestore#1{\tabu@Xarg{#1}\let\tabucolX@spec\tabu@temp
-   \iftabu@measuring \else \tabu@measuringtrue \aftergroup\tabu@usetabuX \fi}%
-\def\tabu@usetabuX{%
-   \tabu@everycr\expandafter{\the\tabu@everycr\tabu@phantomline}%
-}% \tabu@usetabuX
+\def\tabu@rewrite@Xrestore#1{\tabu@Xarg{#1}\let\tabucolX@spec\tabu@temp}%
 \def\tabu@rewrite@Xto{%
    \iftabu@measuring % not the first X column found in preamble
       \xdef\tabu@global@X {\tabu@global@X
@@ -289,7 +295,7 @@
       \xdef\tabu@global@X{%
          \tabu@X@sum \the\tabu@X@sum\relax
          \tabu@target \the\tabu@target\relax}%
-      \let \@halignto \relax
+      \let\tabu@halignto \relax
       \aftergroup \tabu@prep@TRIAL
    \fi
 }% \tabu@rewrite@Xto
@@ -312,7 +318,7 @@
          \tabu@target \the\tabu@target\relax
          \tabu@spreadtarget \the\tabu@spreadtarget\relax
          \def\csname tabu@X\the\tabu@X@cols\endcsname{\strip@pt\tabu@X@sum}}%
-      \let\@halignto \relax
+      \let\tabu@halignto \relax
       \aftergroup \tabu@prep@TRIAL
    \fi
 }% \tabu@rewrite@Xspread
@@ -435,7 +441,7 @@
 \newcommand\tabuDisableCommands[1]{\g@addto@macro\tabu@TRIAL@hook{#1}}
 \def\tabu@arrayleft@measure#1\bgroup{%
   \def\tabu@Xfinish{\ifnum0=`{\fi}\tabu@global@X
-         \let\@halignto\tabu@halignto \tabu@firstclinetrue  #1\bgroup}%
+         \let\@halignto\tabu@halignto \tabu@firstcline  #1\bgroup}%
   \toks@{\let\@preamble\tabu@savedpreamble}% <required for multicolumn>
   \tabu@collect
 }% \tabu@arrayleft@measure
@@ -577,63 +583,6 @@
    \box\tabu@box
    \egroup % end of \vtop (measure)
 }% \tabu@spread@endhbox
-\def\tabu@tabudecimal#1{%
-   \def\tabu@decimal{#1}\@temptokena{}%
-   \let\tabu@getdecimal@ \tabu@getdecimal@ignorespaces
-   \tabu@scandecimal
-}% \tabudecimal
-\def\tabu@scandecimal{\futurelet \tabu@temp \tabu@getdecimal@}
-\def\tabu@skipdecimal#1{#1\tabu@scandecimal}
-\def\tabu@getdecimal@ignorespaces{%
-   \ifcase 0\ifx\tabu@temp\ignorespaces\else
-            \ifx\tabu@temp\@sptoken1\else
-            2\fi\fi\relax
-      \let\tabu@getdecimal@ \tabu@getdecimal
-      \expandafter\tabu@skipdecimal
-   \or \expandafter\tabu@gobblespace\expandafter\tabu@scandecimal
-   \else \expandafter\tabu@skipdecimal
-   \fi
-}% \tabu@getdecimal@ignorespaces
-\def\tabu@get@decimal#1{\@temptokena\expandafter{\the\@temptokena #1}%
-                        \tabu@scandecimal}
-\def\do#1{%
-   \def\tabu@get@decimalspace#1{%
-      \@temptokena\expandafter{\the\@temptokena #1}\tabu@scandecimal}%
-}\do{ }
-\def\tabu@getdecimal{%
-   \ifcase    0\ifx 0\tabu@temp\else
-               \ifx 1\tabu@temp\else
-               \ifx 2\tabu@temp\else
-               \ifx 3\tabu@temp\else
-               \ifx 4\tabu@temp\else
-               \ifx 5\tabu@temp\else
-               \ifx 6\tabu@temp\else
-               \ifx 7\tabu@temp\else
-               \ifx 8\tabu@temp\else
-               \ifx 9\tabu@temp\else
-               \ifx .\tabu@temp\else
-               \ifx ,\tabu@temp\else
-               \ifx -\tabu@temp\else
-               \ifx +\tabu@temp\else
-               \ifx e\tabu@temp\else
-               \ifx E\tabu@temp\else
-               \ifx\tabu@cellleft\tabu@temp1\else
-               \ifx\ignorespaces\tabu@temp1\else
-               \ifx\@sptoken\tabu@temp2\else
-            3\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\relax
-       \expandafter\tabu@get@decimal
-   \or \expandafter\tabu@skipdecimal
-   \or \expandafter\tabu@get@decimalspace
-   \else\expandafter\tabu@printdecimal
-   \fi
-}% \tabu@getdecimal
-\def\tabu@printdecimal{%
-   \edef\tabu@temp{\the\@temptokena}%
-   \ifx\tabu@temp\@empty\else
-   \ifx\tabu@temp\space\else
-      \expandafter\tabu@decimal\expandafter{\the\@temptokena}%
-   \fi\fi
-}% \tabu@printdecimal
 \newcommand*\tabuvline@rewrite[1][]{\tabuvline@arg{#1}%
                      \expandafter \NC@find \tabu@temp}
 \def\tabu@vline#1{\vrule width#1}
@@ -670,14 +619,16 @@
 \def\tabuvlines@find#1|{\NC@{#1}}
 \def\tabu@firstcline{%
    \tabu@firstclinetrue
-   \let\tabu@everycr\everycr
-   \def\tabu@restoreeverycr{\let\everycr\tabu@everycr}%
+   \let\tabu@everycr \everycr
+   \def\tabu@restoreeverycr {\let\everycr\tabu@everycr}%
    \def\everycr{\afterassignment\tabu@restoreeverycr\@temptokena}% <for ialign>
    \tabu@everycr{\noalign{%
       \global\tabu@everycr{\noalign{%
             \global\tabu@everycr{}\global\tabu@firstclinefalse}}%
       \global\let\everycr\tabu@everycr}}%
 }% \tabu@firstcline
+\def\tabu@addphantomline{\tabu@everycr\expandafter{\the\tabu@everycr
+                                                 \tabu@phantomline}}
 \def\tabu@linedash{4pt}%   <default value>
 \def\tabu@dashgap{4pt}%    <default value>
 \def\tabucline{\noalign{\ifnum0=`}\fi\@ifstar
@@ -694,7 +645,7 @@
                               \toks@\expandafter{\the\toks@ &}}%
       \loop
          \toks@\expandafter{\the\toks@ \omit }%
-         \ifcase 0\if@tempswa\else\ifnum \@multicnt>\tabu@start 1\fi\fi\relax
+         \ifnum \@multicnt=\@ne
          \expandafter \tabu@add \csname tabu@tok@\the\@multicnt L\endcsname \@nil
          \fi
          \ifcase 0\if@tempswa\else\ifnum \@multicnt<\tabu@stop 1\fi\fi\relax
@@ -734,8 +685,8 @@
    \ifx\@tempa\hbox  \tabu@defleaders{#1}\else
    \ifx\@tempa\box   \tabu@defleaders{#1}\else
    \ifx\@tempa\copy  \tabu@defleaders{#1}\else
-   \ifcsname tabu@line@style@\string#1\endcsname
-      \csname tabu@line@style@\string#1\endcsname
+   \ifcsname tabu@line@style@\detokenize{#1}\endcsname
+      \csname tabu@line@style@\detokenize{#1}\endcsname
    \else \tabu@getline{#1\p@ on0pt off0pt}\fi\fi\fi\fi\fi
 }% \tabu@getlinespec
 \def\tabu@defleaders#1{%
@@ -778,11 +729,11 @@
          \ifdim\@tempdimc>\z@
             \hbox\bgroup \kern\the\dimexpr\@tempdimc/2\relax\fi
          \noexpand\iftabu@firstcline
-         \vrule depth\the\@tempdima
+         \vrule depth\dimexpr\the\@tempdima
                 \ifdim\@tempdimb>\z@ width\the\@tempdimb\fi
          \noexpand\else
          \vrule height\dimexpr-\extrarowheight+\the\@tempdima
-                depth\extrarowheight
+                depth\dimexpr\extrarowheight
                \ifdim\@tempdimb>\z@ width\the\@tempdimb\fi
          \noexpand\fi
          \ifdim\@tempdimc>\z@
@@ -812,7 +763,7 @@
 \def\tabulinestyle#1{\@for\@tempa:=#1\do{\expandafter\tabu@linestyle\@tempa==\@nil}}
 \def\tabu@linestyle#1=#2=#3\@nil{%
    \begingroup \tabu@getlinespec {#2}\expandafter\gdef
-         \csname tabu@line@style@\string#1\expandafter\endcsname
+         \csname tabu@line@style@\detokenize{#1}\expandafter\endcsname
                      \expandafter{\expandafter\def\expandafter\tabu@xleaders
                                                 \expandafter{\tabu@xleaders}}%
    \endgroup
@@ -836,6 +787,63 @@
                         \tabu@verb #1\tabu@s@nitizetext}
 \long\def\tabu@s@nitizetext#1{\@makeother\{\@makeother\}%
             \everyeof{\noexpand}\scantokens{#1}\endgroup}
+\def\tabu@tabudecimal#1{%
+   \def\tabu@decimal{#1}\@temptokena{}%
+   \let\tabu@getdecimal@ \tabu@getdecimal@ignorespaces
+   \tabu@scandecimal
+}% \tabudecimal
+\def\tabu@scandecimal{\futurelet \tabu@temp \tabu@getdecimal@}
+\def\tabu@skipdecimal#1{#1\tabu@scandecimal}
+\def\tabu@getdecimal@ignorespaces{%
+   \ifcase 0\ifx\tabu@temp\ignorespaces\else
+            \ifx\tabu@temp\@sptoken1\else
+            2\fi\fi\relax
+      \let\tabu@getdecimal@ \tabu@getdecimal
+      \expandafter\tabu@skipdecimal
+   \or \expandafter\tabu@gobblespace\expandafter\tabu@scandecimal
+   \else \expandafter\tabu@skipdecimal
+   \fi
+}% \tabu@getdecimal@ignorespaces
+\def\tabu@get@decimal#1{\@temptokena\expandafter{\the\@temptokena #1}%
+                        \tabu@scandecimal}
+\def\do#1{%
+   \def\tabu@get@decimalspace#1{%
+      \@temptokena\expandafter{\the\@temptokena #1}\tabu@scandecimal}%
+}\do{ }
+\def\tabu@getdecimal{%
+   \ifcase    0\ifx 0\tabu@temp\else
+               \ifx 1\tabu@temp\else
+               \ifx 2\tabu@temp\else
+               \ifx 3\tabu@temp\else
+               \ifx 4\tabu@temp\else
+               \ifx 5\tabu@temp\else
+               \ifx 6\tabu@temp\else
+               \ifx 7\tabu@temp\else
+               \ifx 8\tabu@temp\else
+               \ifx 9\tabu@temp\else
+               \ifx .\tabu@temp\else
+               \ifx ,\tabu@temp\else
+               \ifx -\tabu@temp\else
+               \ifx +\tabu@temp\else
+               \ifx e\tabu@temp\else
+               \ifx E\tabu@temp\else
+               \ifx\tabu@cellleft\tabu@temp1\else
+               \ifx\ignorespaces\tabu@temp1\else
+               \ifx\@sptoken\tabu@temp2\else
+            3\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\relax
+       \expandafter\tabu@get@decimal
+   \or \expandafter\tabu@skipdecimal
+   \or \expandafter\tabu@get@decimalspace
+   \else\expandafter\tabu@printdecimal
+   \fi
+}% \tabu@getdecimal
+\def\tabu@printdecimal{%
+   \edef\tabu@temp{\the\@temptokena}%
+   \ifx\tabu@temp\@empty\else
+   \ifx\tabu@temp\space\else
+      \expandafter\tabu@decimal\expandafter{\the\@temptokena}%
+   \fi\fi
+}% \tabu@printdecimal
 \newcommand*\savetabu[1]{\noalign{%
    \ifx\\#1\\\tabu@savewarn{}{The tabu will not be saved}\else
       \@ifundefined{tabu@save@\string#1}{}{\tabu@savewarn{#1}{Overwritting}}%
@@ -897,9 +905,6 @@
    \else
       \ifcase \numexpr \count@-\@tempcnta \relax % (case 0): prev. token is left
          \advance \tabu@nbcols\@ne
-         \ifnum \tabu@nbcols>\@ne
-         \expandafter\let\csname tabu@tok@\the\tabu@nbcols L\endcsname \relax
-         \fi
          \expandafter\let\csname tabu@tok@\the\tabu@nbcols R\endcsname \relax
          \expandafter\gdef\expandafter\tabu@global@temp\expandafter{%
                            \tabu@global@temp \advance\tabu@nbcols\@ne}%
@@ -907,17 +912,21 @@
             \tabu@cellrightfalse % <only once>
             \tabu@savetok R\tabu@preptokenright
          \fi
-         \tabu@savetok L\tabu@preptokenleft
+         \ifnum \tabu@nbcols=\@ne
+            \tabu@savetok L% LEFT token is always empty unless >{...}
+         \fi
+         \tabu@preptokenleft
       \or                     % (case 1) previous token is right
          \tabu@savetok R\tabu@cellrighttrue
       \else % special column: do not change the token
          \ifnum \tabu@nbcols>\z@ %special column: always on the right of normal one
+            \tabu@savetok R%
          \else % unless this is the very first column (\tabu@nbcols=0)
             \advance\tabu@nbcols\@ne \tabu@savetok L\advance\tabu@nbcols\m@ne
          \fi
          \iftabu@cellright    % before-previous token is right
             \tabu@cellrightfalse
-            \tabu@savetok R\tabu@preptokenright
+            \tabu@preptokenright
          \fi
       \fi % \ifcase
    \fi