siunitx 表，格式化 \directlua{} 輸出

Question

我有一個表，其中包含使用 計算的值\directlua{}。它們採用siunitx列格式。

我想將某些值加粗或更改其顏色。

巨集的輸出似乎\directlua{}被格式化為原始文本，而不是siunitx S列應有的格式。

微量元素：

% Latex program : luaLatex
\documentclass{article}

% *** Fonts ***
\usepackage{fontspec}
\setmainfont{Tex Gyre Schola}[Numbers={Proportional,OldStyle}]
% *** Tabular figures ***
\newfontfamily\TLFfont{Tex Gyre Schola}[Numbers={Monospaced,Lining}]

% *** siunitx ***
\usepackage{siunitx}
% french typesetting, 3-figures blocks
   \sisetup{locale=FR,group-minimum-digits=4}
% font detection
   \sisetup{detect-all}

% *** Lua percent sign ***
% https://tex.stackexchange.com/questions/436979/problem-with-string-format-directlua-and-tex-sprint
\makeatletter
   \let\luaPercent\@percentchar
\makeatother
% *** Rounding value ***
\newcommand*{\roundingValue}{2}
% ***

\usepackage{xcolor}

% *** Tabular bold / siunitx ***
% https://tex.stackexchange.com/questions/66253/siunitx-bold-single-numeric-cells
\usepackage{etoolbox}
\robustify\bfseries


\begin{document}

\sisetup{mode=text,text-rm=\TLFfont,unit-mode=text}
\begin{tabular}{lSSr}
      &   {raw text value} &   {directlua value} &    \\
   basic text &   1231.45 &   \directlua{n=1231.45 tex.print(string.format("\luaPercent.\roundingValue f",n))} &   right \\
   itshape &   \itshape 1231.45 &   \itshape \directlua{n=1231.45 tex.print(string.format("\luaPercent.\roundingValue f",n))} &   wrong \\
   bfseries &   \bfseries 1231.45 &   \bfseries \directlua{n=1231.45 tex.print(string.format("\luaPercent.\roundingValue f",n))} &   wrong \\
   color &   \color{red}1231.45 &   \color{red}\directlua{n=1231.45 tex.print(string.format("\luaPercent.\roundingValue f",n))} &   wrong \\
   tex.sprint &   &   \color{red}\directlua{n=1231.45 tex.sprint(string.format("\luaPercent.\roundingValue f",n))} &   wrong \\
   tex.cprint 11 &   &   \color{red}\directlua{n=1231.45 tex.cprint(11, string.format("\luaPercent.\roundingValue f",n))} &   wrong \\
\end{tabular}

\end{document}

我故意使用舊式數位字體，以增強差異：

_{（來源：toile-libre.org）}

唯一正確格式化的文字是在未套用修飾符時。

我在這裡缺少什麼？

Answer 1

該問題與 沒有直接關係，如果您替換為擴展為數字的宏，\directlua也會發生相同的情況。\directlua{...}在這兩種情況下，siunitx 都必須查看被 TeX 擴展為實際數字後的值，但是 siunitx 中的擴展代碼會被不可擴展的命令\color等\itshape中斷。 siunitx 看到不可展開的指令之前該值已完全展開：\expandafter\expanded

% Latex program : luaLatex
\documentclass{article}

% *** Fonts ***
\usepackage{fontspec}
\setmainfont{Tex Gyre Schola}[Numbers={Proportional,OldStyle}]
% *** Tabular figures ***
\newfontfamily\TLFfont{Tex Gyre Schola}[Numbers={Monospaced,Lining}]

% *** siunitx ***
\usepackage{siunitx}
% french typesetting, 3-figures blocks
   \sisetup{locale=FR,group-minimum-digits=4}
% font detection
   \sisetup{detect-all}

% *** Lua percent sign ***
% https://tex.stackexchange.com/questions/436979/problem-with-string-format-directlua-and-tex-sprint
\makeatletter
   \let\luaPercent\@percentchar
\makeatother
% *** Rounding value ***
\newcommand*{\roundingValue}{2}
% ***

\usepackage{xcolor}

% *** Tabular bold / siunitx ***
% https://tex.stackexchange.com/questions/66253/siunitx-bold-single-numeric-cells
\usepackage{etoolbox}
\robustify\bfseries


\begin{document}

\sisetup{mode=text,text-rm=\TLFfont,unit-mode=text}
\begin{tabular}{lSSr}
      &   {raw text value} &   {directlua value} &    \\
   basic text &   1231.45 &   \directlua{n=1231.45 tex.print(string.format("\luaPercent.\roundingValue f",n))} &   right \\
   itshape &   \itshape 1231.45 &   \expanded{\noexpand\itshape \directlua{n=1231.45 tex.print(string.format("\luaPercent.\roundingValue f",n))}} &   right \\
   bfseries &   \bfseries 1231.45 &   \expanded{\noexpand\bfseries \directlua{n=1231.45 tex.print(string.format("\luaPercent.\roundingValue f",n))}} &   right \\
   color &   \color{red}1231.45 &   \expanded{\noexpand\color{red}\directlua{n=1231.45 tex.print(string.format("\luaPercent.\roundingValue f",n))}} &   right \\
   tex.sprint &   &   \expanded{\noexpand\color{red}\directlua{n=1231.45 tex.sprint(string.format("\luaPercent.\roundingValue f",n))}} &   right \\
   tex.cprint 11 &   &   \expanded{\noexpand\color{red}\directlua{n=1231.45 tex.cprint(11, string.format("\luaPercent.\roundingValue f",n))}} &   wrong \\
   tex.cprint 12 &   &   \expanded{\noexpand\color{red}\directlua{n=1231.45 tex.cprint(12, string.format("\luaPercent.\roundingValue f",n))}} &   right \\
\end{tabular}

\end{document}

（或者，也可以透過在呼叫中列印\color或字體命令來解決問題，而不是單獨發出它們） tex.print\directlua