在每个生成的输出行执行 LaTeX 命令

Question

\point我有一个使用该包添加$\bigstar$作为边注的命令。但如果每行marginnote有多个星号，我希望多个星号彼此相邻。因此在边注中生成两个。目前，两个星号都生成了，但我认为它们相互重叠，看起来只有一个。\pointHello \point\point world.$\bigstar$

我的想法是使用一个计数器，该计数器在每个换行符时重置。但这可能吗？我找到了使用 执行段落开头命令的命令\everypar。是否有命令可以向文档的每个生成的输出行添加一些内容？

Answer 1

这里有一个替代建议，即添加一个测试\marginnote，如果最后一个\marginnote具有相同的垂直位置，则将输出向右移动 a 的宽度\bigstar：

\documentclass{article}
\usepackage{amssymb}
\usepackage{marginnote}
\usepackage{xpatch}

\makeatletter
\newcommand*\@mn@lastypos{\relax}
\newcommand*\@mn@lastpage{\relax}
\newlength{\@mn@currmove}
\setlength{\@mn@currmove}{\z@}
\providecommand\@firstofthree[3]{#1}
\providecommand\@secondofthree[3]{#2}
%\providecommand\@thirdofthree[3]{#3}% Already defined in LaTeX from 1998/03/20
\@ifundefined{pdflastypos}{%
  \let\mn@lastypos\lastypos
}{%
  \let\mn@lastypos\pdflastypos
}
\xpatchcmd{\@mn@margintest}{%
  \protected@write\@auxout{\let\themn@abspage\relax}{%
    \string\newmarginnote{note.\@mn@thispage.\@mn@atthispage}{%
      {\themn@abspage}{\noexpand\number\mn@lastxpos sp}}%
  }%
}{% extend \newmarginnote by the y pos
  \protected@write\@auxout{\let\themn@abspage\relax}{%
    \string\newmarginnote{note.\@mn@thispage.\@mn@atthispage}{%
      {\themn@abspage}{\noexpand\number\mn@lastxpos sp}{\noexpand\number\mn@lastypos}}%
  }%
}{}{\undefined}
\xpatchcmd{\@mn@margintest}{%
  \edef\@mn@currxpos{\expandafter\@secondoftwo\@mn@currpage}%
}{% the x pos is now the second of three arguments and the third is the y pos
  \edef\@mn@currxpos{\expandafter\@secondofthree\@mn@currpage}%
  \edef\@mn@currypos{\expandafter\@thirdofthree\@mn@currpage}%
}{}{\undefined}
\xpatchcmd{\@mn@margintest}{%
  \edef\@mn@currpage{\expandafter\@firstoftwo\@mn@currpage}%
}{% the page number is now the first of three arguments
  \edef\@mn@currpage{\expandafter\@firstofthree\@mn@currpage}%
}{}{\undefined}
\xapptocmd{\@mn@margintest}{% now add the y pos testing and the offset
  \settowidth\@tempdima{\ensuremath{\bigstar}}%
  \ifx\@mn@lastpage\@mn@currpage
    \ifx\@mn@lastypos\@mn@currypos
      \global\advance\@mn@currmove\@tempdima
    \else
      \global\@mn@currmove\z@
    \fi
  \else
    \global\@mn@currmove\z@
  \fi
  \@ifundefined{@mn@currxpos}{}{%  
    \edef\@mn@currxpos{\the\dimexpr \@mn@currxpos-\@mn@currmove\relax}%
  }%
  \global\let\@mn@lastpage\@mn@currpage
  \global\let\@mn@lastypos\@mn@currypos
}{}{\undefined}
\makeatother

\newcommand*{\point}{\marginnote{\ensuremath{\bigstar}}}

\begin{document}
Test\point

Test\point Test\point

Test\point Test\point Test\point

Test\point
\end{document}