siunitx, bold numbers in cell with cell content start with \$

Question

Based on egreg answer on question how-can-i-make-siunitxs-num-bold i try to make the following table:

\documentclass[12pt,
               border=2mm,
               preview]{standalone}
    \usepackage{booktabs}
\usepackage{siunitx}
    \usepackage{etoolbox}
\renewcommand{\bfseries}{\fontseries{b}\selectfont}
\newrobustcmd{\B}{\bfseries}

\begin{document}
%---------------------------------------------------------------%
    \begin{table}
\sisetup{detect-weight, mode=text, table-format=2.2}
    \centering
\begin{tabular}{ l >{\$}S[table-align-text-pre=false,
                          table-space-text-pre =\$ ]
                        S[table-space-text-post=\,]<{\%}
               }
\toprule
text a  &   \B  17.89   &   \B  10.29   \\
text b  &        0.29   &        7.89   \\
\bottomrule
\end{tabular}
    \end{table}
\end{document}

which gives:

Is possible to convince siunitx that also the second cell in the first row to be write in bold?

Interesting feature. Anyway, repeated marker should be avoided and put in the column header. — egreg, Feb 18 '17 at 23:43
@Bernard The second cell in the first row has \B, but the entry is not emboldened. — egreg, Feb 18 '17 at 23:44
@Bernard, no, the second cells in the first row, which has B, but not appear in bold (as stated egreg in his comment). — Zarko, Feb 18 '17 at 23:46
@egreg, in normal circumstances the $˙should be in column headers, but I saw some question here with such demands, so I start to thinking how to solve this withsiunitx` — Zarko, Feb 18 '17 at 23:50

score 4 · Accepted Answer · answered Feb 19 '17 at 08:38

This happens as siunitx is trying to maintain alignment. The material before the number is typeset in a box, which means that any colour or font change commands will be lost. You don't see that with just a font switch as it's zero-width: that's detected and inserted directly (not boxed). You can get around this by making the inserted material have zero width:

\documentclass[12pt,
               border=2mm,
               preview]{standalone}
    \usepackage{booktabs}
\usepackage{siunitx}
    \usepackage{etoolbox}
\renewcommand{\bfseries}{\fontseries{b}\selectfont}
\newrobustcmd{\B}{\bfseries}

\begin{document}
%---------------------------------------------------------------%
    \begin{table}
\sisetup{detect-weight, mode=text, table-format = 2.2}
    \centering
\begin{tabular}{ l >{{\makebox[0pt][l]{\$}}}S[table-align-text-pre=true,
                          table-space-text-pre =\$ ]
                        S[table-space-text-post={\,\%}]<{\,\%}
               }
\toprule
text a  &   \B 17.89   &   \B  10.29\cr
text b  &        0.29   &        7.89\cr
\bottomrule
\end{tabular}
    \end{table}
\end{document}

A bug shows up in siunitx when you do this as the $ tokens are duplicated. A fix will be on CTAN later today. It can be fixed for the moment using

\ExplSyntaxOn
\patchcmd \__siunitx_table_print_S_reserved_ends:
  { \l__siunitx_table_collect_pre_tl \bool_set_false:N }
  { \box_clear:N \l__siunitx_table_pre_box
    \l__siunitx_table_collect_pre_tl \bool_set_false:N
  }
  { }
  { }
\ExplSyntaxOff

Thank you very much! I try to replace >{{\makebox[0pt][l]{\$}}} with shorter >{\rlap{\$}} and this also works. Both makes numbers bold, but table-align-text-pre=false, doesn't work anymore :-( — Zarko, Feb 19 '17 at 11:27
@Zarko I'll see if I can sort the alignment issue: it's tricky with the current code set up — Joseph Wright, Feb 19 '17 at 12:49

siunitx, bold numbers in cell with cell content start with \$

1 Answers1