如何将 \circled 命令用于一位数，将 \newcircled 命令用于两位数？

Question

首先，MWE 及其输出如下。

\documentclass{article}
\usepackage{tikz}
%%%define circled command%%%%%%%%%%%%%%
\newcommand*\circled[1]{%
    \tikz[baseline=(char.base)]\node[shape=circle,draw,inner sep=0.3pt,text depth=0pt,font=\normalfont,minimum size=6pt] (char) {#1};}
%%%define newcircled command%%%%%%%%%%%%
\usepackage{microtype}
\usepackage{graphics}
\newcommand*\newcircled[1]{\circled{\textls[-70]{\scalebox{0.53}[1]{#1}}}}

\begin{document}
We have circled one-digit numbers and two-digit numbers by the \verb|\circled| command as follows.
\begin{center}
\circled{0} \circled{1} \circled{2} \circled{3} \circled{4} \circled{5} \circled{6} \circled{7} \circled{8} \circled{9}  \circled{10} \circled{11} \circled{12} \circled{23} \circled{68}
\end{center}
And we also have circled one-digit numbers by the \verb|\circled| command and two-digit numbers by the \verb|\newcircled| command as follows which are as desired.
\begin{center}
\circled{0} \circled{1} \circled{2} \circled{3} \circled{4} \circled{5} \circled{6} \circled{7} \circled{8} \circled{9}  \newcircled{10} \newcircled{11} \newcircled{12} \newcircled{23} \newcircled{68}
\end{center}


\end{document}

显然第二行数字是符合要求的。所以我的问题是如何将\circled和 \newcircled 命令结合用于数字或者如何生成一个命令，该命令可以原子地\circled对一位数使用该命令，\newcircled对两位数使用该命令？

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在 @CarLaTeX 回答之后，我们可以出色的带圈数字，带两位数作为脚注，这可能是目前为止最好的。以下是 MWE 及其输出。请注意，您可以使用 LaTeX或PDFLaTeX但不能XeTeX或XeLaTeX或LuaLaTeX来编译文件，因为microtype包不能在 XeTeX或XeLaTeX或中使用LuaLaTeX。要使用XeTeX或XeLaTeX或 LuaLaTeX来编译文件，您可以改用fontspec包和\addfontfeature{LetterSpace=-9.0}命令（参见第三个解决方案）。

\documentclass{article}
\usepackage{tikz}
\usepackage{graphics}%for \scalebox
\usepackage{etoolbox}%for \ifnumcomp
\usepackage{microtype}%for \textls
%%%define circled command%%%%%%%%%%%%%%
\tikzset{circlednode/.style={
    circle,
    draw,
    inner sep=0.1ex,
    text depth=0ex,
    font=\normalfont,
    minimum size=1ex
    }
}
\newcommand*\circled[1]{%
    \ifnumcomp{#1}{>}{9}{% 
        % if > 9:
        \tikz[baseline=(char.base)]\node[circlednode] (char) {\textls[-70]{\scalebox{0.53}[1]{#1}}};}{%
        % if <= 9: 
        \tikz[baseline=(char.base)]\node[circlednode] (char) {#1};}%
    }
%%%footnote number setting%%%%%%%%%%%%%%%
\makeatletter
%make footnote numbers be circled------------------
\renewcommand{\thefootnote}{%
    \raisebox{0.25ex}{%
    \scalebox{0.7}{\protect\circled{%
            \arabic{footnote}}%
        }%
    }%
}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\begin{document}
We have circled one-digit numbers and two-digit numbers by the \verb|\circled| command as follows.
\begin{center}
\circled{0} \circled{1} \circled{2} \circled{3} \circled{4} \circled{5} \circled{6} \circled{7} \circled{8} \circled{9}  \circled{10} \circled{11} \circled{12} \circled{23} \circled{68}
\end{center}
\par We can also produce excellent circled numbers with two-digits for footnotes with the help of the \verb|\circled| command, which maybe the best so far as now. 
\par Now we test the footnote numbers with two digits\footnote{Test}. Now we test the footnote numbers with two digits\footnote{Test}. Now we test the footnote numbers with two digits\footnote{Test}. Now we test the footnote numbers with two digits\footnote{Test}. Now we test the footnote numbers with two digits\footnote{Test}. Now we test the footnote numbers with two digits\footnote{Test}. Now we test the footnote numbers with two digits\footnote{Test}. Now we test the footnote numbers with two digits\footnote{Test}.Now we test the footnote numbers with two digits\footnote{Test}. Now we test the footnote numbers with two digits\footnote{Test}. Now we test the footnote numbers with two digits\footnote{Test}. Now we test the footnote numbers with two digits\footnote{Test}. Now we test the footnote numbers with two digits\footnote{Test}. Now we test the footnote numbers with two digits\footnote{Test}. Now we test the footnote numbers with two digits\footnote{Test}. Now we test the footnote numbers with two digits\footnote{Test}. Now we test the footnote numbers with two digits\footnote{Test}. Now we test the footnote numbers with two digits\footnote{Test}. Now we test the footnote numbers with two digits\footnote{Test}. Now we test the footnote numbers with two digits\footnote{Test}. Now we test the footnote numbers with two digits\footnote{Test}. Now we test the footnote numbers with two digits\footnote{Test}. Now we test the footnote numbers with two digits\footnote{Test, test, test, test, test, test, test, test, test, test, test, test, test, test, test, test, test, test, test, test, test.}.
\end{document}

Answer 1

使用\ifnumcompfrometoolbox测试数字是否大于 9：

\documentclass{article}
\usepackage{etoolbox}
\usepackage{microtype}
\usepackage{graphics}
\usepackage{tikz}
\tikzset{mynode/.style={
    circle,
    draw,
    inner sep=0.3pt,
    text depth=0pt,
    font=\normalfont,
    minimum size=6pt
    }
}
%%%define circled command%%%%%%%%%%%%%%
\newcommand*\circled[1]{%
    \ifnumcomp{#1}{>}{9}{% 
        % if > 9:
        \tikz[baseline=(char.base)]\node[mynode] (char) {\textls[-70]{\scalebox{0.53}[1]{#1}}};}{%
        % if <= 9: 
        \tikz[baseline=(char.base)]\node[mynode] (char) {#1};}%
    }
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\begin{document}
We have circled one-digit numbers and two-digit numbers by the \verb|\circled| command as follows.
\begin{center}
\circled{0} \circled{1} \circled{2} \circled{3} \circled{4} \circled{5} \circled{6} \circled{7} \circled{8} \circled{9}  \circled{10} \circled{11} \circled{12} \circled{23} \circled{68}
\end{center}
And we also have circled one-digit numbers by the \verb|\circled| command and two-digit numbers by the \verb|\circled| command as follows which are as desired.
\begin{center}
\circled{0} \circled{1} \circled{2} \circled{3} \circled{4} \circled{5} \circled{6} \circled{7} \circled{8} \circled{9}  \circled{10} \circled{11} \circled{12} \circled{23} \circled{68}
\end{center}
\end{document}