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\textcolor{}{} 在 \node 中的行为不同

tag-icon • tag-icon tikz-pgf color nodes
\textcolor{}{} 在 \node 中的行为不同

我希望使用\MyText定义为的宏

\newcommand{\MyText}{before \textcolor{red}{XX} after}

应该总是为“之前”和“之后”的文本生成相同的颜色。但是当我在\node（第三行）中使用它时，它会产生不同的颜色：

在此处输入图片描述

如果在 内使用，则似乎会在最后\textcolor{red}{XX}恢复颜色。black\node

问题：如何使\textcolor{}{}内部\node产生与 外部相同的结果\node。

列表文件

 article.cls    2014/09/29 v1.4h Standard LaTeX document class
  size10.clo    2014/09/29 v1.4h Standard LaTeX file (size option)
    tikz.sty    2015/08/07 v3.0.1a (rcs-revision 1.151)
     pgf.sty    2015/08/07 v3.0.1a (rcs-revision 1.15)
  pgfrcs.sty    2015/08/07 v3.0.1a (rcs-revision 1.31)
everyshi.sty    2001/05/15 v3.00 EveryShipout Package (MS)
  pgfrcs.code.tex
 pgfcore.sty    2010/04/11 v3.0.1a (rcs-revision 1.7)
graphicx.sty    2017/06/01 v1.1a Enhanced LaTeX Graphics (DPC,SPQR)
  keyval.sty    2014/10/28 v1.15 key=value parser (DPC)
graphics.sty    2017/06/25 v1.2c Standard LaTeX Graphics (DPC,SPQR)
    trig.sty    2016/01/03 v1.10 sin cos tan (DPC)
graphics.cfg    2016/06/04 v1.11 sample graphics configuration
  pdftex.def    2018/01/08 v1.0l Graphics/color driver for pdftex
  pgfsys.sty    2014/07/09 v3.0.1a (rcs-revision 1.48)
  pgfsys.code.tex
pgfsyssoftpath.code.tex    2013/09/09  (rcs-revision 1.9)
pgfsysprotocol.code.tex    2006/10/16  (rcs-revision 1.4)
  xcolor.sty    2016/05/11 v2.12 LaTeX color extensions (UK)
   color.cfg    2016/01/02 v1.6 sample color configuration
 pgfcore.code.tex
pgfcomp-version-0-65.sty    2007/07/03 v3.0.1a (rcs-revision 1.7)
pgfcomp-version-1-18.sty    2007/07/23 v3.0.1a (rcs-revision 1.1)
  pgffor.sty    2013/12/13 v3.0.1a (rcs-revision 1.25)
 pgfkeys.sty    
 pgfkeys.code.tex
 pgfmath.sty    
 pgfmath.code.tex
  pgffor.code.tex
    tikz.code.tex
supp-pdf.mkii
epstopdf-base.sty    2016/05/15 v2.6 Base part for package epstopdf
infwarerr.sty    2016/05/16 v1.4 Providing info/warning/error messages (HO)
  grfext.sty    2016/05/16 v1.2 Manage graphics extensions (HO)
kvdefinekeys.sty    2016/05/16 v1.4 Define keys (HO)
 ltxcmds.sty    2016/05/16 v1.23 LaTeX kernel commands for general use (HO)
kvoptions.sty    2016/05/16 v3.12 Key value format for package options (HO)
kvsetkeys.sty    2016/05/16 v1.17 Key value parser (HO)
etexcmds.sty    2016/05/16 v1.6 Avoid name clashes with e-TeX commands (HO)
ifluatex.sty    2016/05/16 v1.4 Provides the ifluatex switch (HO)
pdftexcmds.sty    2018/01/30 v0.27 Utility functions of pdfTeX for LuaTeX (HO)
   ifpdf.sty    2017/03/15 v3.2 Provides the ifpdf switch
epstopdf-sys.cfg    2010/07/13 v1.3 Configuration of (r)epstopdf for TeX Live

代码：

\documentclass{article}\listfiles
\usepackage{tikz}

\newcommand{\MyText}{before \textcolor{red}{XX} after}

\begin{document}
\noindent
Outside of \verb|\node|: \MyText

\begingroup
\noindent
Outside of \verb|\node|: \color{green}\MyText
\endgroup

\noindent
\begin{tikzpicture}%
    \node [text=green, draw=blue, fill=yellow!20, inner sep=2pt] at (0,0) {Inside node: \MyText};
\end{tikzpicture}%
\end{document}

答案1

这里是黑客我想出了一个临时的解决办法：

\makeatletter
\let\OldTextcolor\textcolor
\newcommand*{\MyTextColor}[2]{%
    \colorlet{@SavedColor}{.}%
    \OldTextcolor{#1}{#2}%
    \color{@SavedColor}%
    \xspace%
}
\makeatother
\AtBeginEnvironment{tikzpicture}{\let\textcolor\MyTextColor}%

得出（在这测试用例）：

在此处输入图片描述

笔记：

代码：

\documentclass{article}\listfiles
\usepackage{etoolbox}
\usepackage{xcolor}
\usepackage{xspace}
\usepackage{tikz}

\newcommand{\MyText}{before \textcolor{red}{XX} after}

\makeatletter
\let\OldTextcolor\textcolor
\newcommand*{\MyTextColor}[2]{%
    \colorlet{@SavedColor}{.}%
    \OldTextcolor{#1}{#2}%
    \color{@SavedColor}%
    \xspace%
}
\makeatother
\AtBeginEnvironment{tikzpicture}{\let\textcolor\MyTextColor}%


\begin{document}
\noindent
Outside of \verb|\node|: \MyText

\begingroup
\noindent
Outside of \verb|\node|: \color{green}\MyText
\endgroup

\noindent
\begin{tikzpicture}%
    \node [text=green, draw=blue, fill=yellow!20, inner sep=2pt] at (0,0) {Inside node: \MyText};
\end{tikzpicture}%
\end{document}

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