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I bought a new computer with windows10, which I installed MikTeX2.9. The previous LaTeX file failed to compile in this new system. The follwing is a min. example:

\documentclass{book}
\usepackage{fontspec}
\usepackage[BoldFont,SlantFont,CheckSingle=true]{xeCJK} 
\usepackage{CJKnumb}
\setmainfont{Times New Roman}
\setCJKmainfont{DFT_HZ5.TTC} 
\begin{document}
請見本書第\CJKnumber{\ref{coding}}章)。
\end{document}

You do not need to use DFT_HZ5.TTC any other Chinese font is the same. The following is the log file:

....
....
Font)                  TU/TimesNewRoman(0)/m/n --> TU/TimesNewRoman(0)/b/n on 
input line 7.
LaTeX Font Info:    Overwriting math alphabet `\mathit' in version `bold'
(Font)                  OT1/cmr/bx/it --> TU/TimesNewRoman(0)/b/it on input lin
e 7.
LaTeX Font Info:    Overwriting math alphabet `\mathsf' in version `bold'
(Font)                  OT1/cmss/bx/n --> TU/lmss/b/n on input line 7.
LaTeX Font Info:    Overwriting math alphabet `\mathtt' in version `bold'
(Font)                  OT1/cmtt/m/n --> TU/lmtt/b/n on input line 7.

! Missing number, treated as zero.
<to be read again> 
                   \protect 
l.8 隢?

It is not peculiar, because what is inside \CJKnumber is undefined. The program should popup and ask me, and I simple need to hit a return But it did not popup. The program simply break here.

However, if I remove the other Chinese character, the program become

\documentclass{book}
\usepackage{fontspec}
\usepackage[BoldFont,SlantFont,CheckSingle=true]{xeCJK} 
\usepackage{CJKnumb}
\setmainfont{Times New Roman}
\setCJKmainfont{DFT_HZ5.TTC} 
\begin{document}
\CJKnumber{\ref{coding}}
\end{document}

It is fine. What is wrong with my system setup?

muzimuzhi Z
  • 26,474
ophage
  • 1
  • 2

1 Answers1

1

Similar to this answer, the error is caused by the fact that \ref{<label>} is not fully expandable (mainly because the \null in \@setref). Instead, you can use the fully expandable command \getrefnumber{<label>} from refcount package.

Full example:

\documentclass{book}
\usepackage[BoldFont,SlantFont,CheckSingle=true]{xeCJK} 
\usepackage{CJKnumb}
\usepackage{refcount}

\begin{document}
\chapter{title}\label{coding}
第\CJKnumber{\getrefnumber{coding}}章
\end{document}

Alternatively, to have consistent counter output format, it is recommended to (re)define \the<counter> command.

\documentclass{book}
\usepackage[BoldFont,SlantFont,CheckSingle=true]{xeCJK} 
\usepackage{CJKnumb}

\renewcommand{\thechapter}{\CJKnumber{\arabic{chapter}}}


\begin{document}


\chapter{title}\label{coding}
第\ref{coding}章


\end{document}

Note that \CJKnumber accepts a number, not counter name, so we firstly use \arabic{chapter} to get the number.

This usage is more common.

muzimuzhi Z
  • 26,474
  • How about 第\CJKnumber{\thechapter}章 \hfill} Which command should I replace for \thechapter? This issue can be fixed using "chcp 65001" under command mode, at the cost of conflict at other software. It is a issue about UTF-8 coding. – ophage Jun 18 '20 at 07:15
  • @ophage I edited my answer to add a redefining \thechapter resolution. – muzimuzhi Z Jun 18 '20 at 08:21