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升级到 luatex 0.95 后 pinlabel 不起作用

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升级到 luatex 0.95 后 pinlabel 不起作用

我pinlabel在我的项目中广泛使用了该软件包，并使用 LuaLaTeX 进行编译。在最近升级到 MiKTeX 2.9 后，我无法再编译该项目，并出现大量错误，例如

! Undefined control sequence. <argument> \pdfximagebbox 
               \pdflastximage 1 
l.19    \includegraphics[width=5cm]{pdf_figure}

和

! Undefined control sequence. 
 <argument> \pdfximagebbox 
               \pdflastximage 2 l.19    \includegraphics[width=5cm]{pdf_figure}

在分析了日志文件并阅读了 TSE 上的类似错误报告后，我认为问题可能是由 LuaTeX 0.95 和以下几行引起的pinlabel，用于确定 pdf 图像的边界框：

%  Next five lines of code supplied by Mark Petelier
%  
%  Read BB from pdf file:
%
         \pdfximage cropbox {\@filestem.pdf}
         \@p@@sbbllx{\pdfximagebbox\pdflastximage 1}
         \@p@@sbblly{\pdfximagebbox\pdflastximage 2}
         \@p@@sbburx{\pdfximagebbox\pdflastximage 3}
         \@p@@sbbury{\pdfximagebbox\pdflastximage 4}

LuaTeX 手册建议我使用外部应用程序或 img 库来替换\pdfximagebbox命令，但是我对 (Lua)TeX 的了解不足以实现它。因此我的问题是：pinlabel使用 LuaTeX 0.95 的最佳方法是什么？

梅威瑟：

% !TeX TXS-program:compile = txs:///lualatex/
\documentclass[11pt,twoside,a4paper]{article}
% the following package seems to be necessary to enable use of pdf images with pinlabel after upgrade to luatex 0.95 
\usepackage{luatex85}
\usepackage{pinlabel}
\usepackage{graphicx}

\begin{document}
    Math in graphics: \\
    \labellist    
    \pinlabel $X$ at 200 200
    \endlabellist
%   Two cases, uncomment one of them
%
%   MWE compiles well with the following line; the BB information is taken from the corresponding example-image.eps file, I guess
%   \includegraphics[width=5cm]{example-image}
%
%   MWE does not compile with lualatex 0.95 if using any pdf file without corresponding eps file. The examle compiles well usin pdftex.
    \includegraphics[width=5cm]{pdf_figure}
\end{document}

答案1

我认为您可以修补代码以使用 lua 图像库，如下所示：

在此处输入图片描述

\documentclass[11pt,twoside,a4paper]{article}
% the following package seems to be necessary to enable use of pdf images with pinlabel after upgrade to luatex 0.95 
\usepackage{luatex85}
\usepackage{pinlabel}
\usepackage{graphicx}

\makeatletter
\def\foo#1\pdfximage#2\no@bbfalse#3\foo{%
\def\scan@header{#1%
         \directlua{a = img.scan { filename = "\@filestem.pdf"}
tex.print(\the\catcodetable@atletter,
"\string\\@p@@sbburx{" .. a.width .. "sp}\string\\@p@@sbbury{" .. a.height .. "sp}")
}%
         \@p@@sbbllx{\z@}%
         \@p@@sbblly{\z@}%
        %
\no@bbfalse#3}}%
\expandafter\foo\scan@header\foo
\makeatother

\begin{document}
    Math in graphics: \\
    \labellist    
    \pinlabel $X$ at 200 200
    \endlabellist
%   Two cases, uncomment one of them
%
%   MWE compiles well with the following line; the BB information is taken from the corresponding example-image.eps file, I guess
%   \includegraphics[width=5cm]{example-image}
%
%   MWE does not compile with lualatex 0.95 if using any pdf file without corresponding eps file. The examle compiles well usin pdftex.
    \includegraphics[width=5cm]{pdf_figure}
\end{document}

也许可以使用 bbox 而不是高度 + 深度，但对于 pdf 文件包含，我认为 llx 和 lly 始终为 0。

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