我有一个（相当长的）层次结构，用包排版dirtree。但是，在将树拆分到新页面时，我遇到了一些问题——线条可能会突出到工作表可写区域的最顶部，延伸到标题区域。
请注意，我在这里使用标题只是为了更好地说明问题，它们对于举例说明问题来说并不是必要的。但我的确有一个类似的页面设置，而且水平线与树线相交看起来特别不愉快。
以下是一个例子：
\documentclass{article}
\usepackage{lipsum}
\usepackage{dirtree}
\usepackage{fancyhdr}
\fancyhf{}
\fancyhead[C]{\emph{\nouppercase{\rightmark}}}
\fancyfoot[C]{\thepage}
\renewcommand{\headrulewidth}{0.4pt}
\renewcommand{\footrulewidth}{0.4pt}
\pagestyle{fancy}
\renewcommand{\sectionmark}[1]{\markright{#1}}
\renewcommand{\subsectionmark}[1]{\markright{#1}}
\begin{document}
\lipsum[1-4]
\dirtree{%
.1 spam.
.2 eggs.
.2 ham.
.3 circus.
.3 parrot.
.4 knights.
.3 spamalot.
.4 ni.
.5 brian.
.5 vikings.
.2 meaning.
}
\end{document}
现在包装文档说\DTsplittree待办事项列表中有一个命令，允许将树拆分为多个页面。在此期间，有什么我可以使用的小技巧或解决方法吗？
我使用了书中的其他一些技巧，例如减少行距和调整字体大小，如果我找不到其他方法，我想我可以将其分成两个较小的部分（我必须再次将它们放在页面之间！）。但我对 TeXnical 解决方案更感兴趣。
更新让我们看看如果给予 100 点奖励声誉，这个问题是否会得到解答。
答案1
这个dirtree包很棒！下面是对该包的轻微修改，以便合理地分页。它需要 LaTeX 和包zref，所以我不认为这是正确的解决方案，但它似乎确实有效（至少在极其有限的测试中）。由于此修改使用了参考，因此需要多次运行 LaTeX 才能看到新的分页行为。
% This file was dirtree.tex. It was modified by TH. to support
% splitting the tree at pagebreaks sanely. It has been renamed to
% durtree.sty. It will now only work with LaTeX. It is meant as a
% quick hack to solve the problem at hand. Any bugs in it are my own,
% please don't blame M. Charpentier for them!
%
%%
%% This is file `dirtree.tex',
%% generated with the docstrip utility.
%%
%% The original source files were:
%%
%% dirtree.dtx (with options: `tex')
%%
%% IMPORTANT NOTICE:
%%
%% For the copyright see the source file.
%%
%% Any modified versions of this file must be renamed
%% with new filenames distinct from dirtree.tex.
%%
%% For distribution of the original source see the terms
%% for copying and modification in the file dirtree.dtx.
%%
%% This generated file may be distributed as long as the
%% original source files, as listed above, are part of the
%% same distribution. (The sources need not necessarily be
%% in the same archive or directory.)
%%
%% Package `dirtree.dtx'
%% -----------------------------------------------
%% Copyright (C) 2004-2006 Jean-C\^ome Charpentier
%% -----------------------------------------------
%%
%% This work may be distributed and/or modified under the
%% conditions of the LaTeX Project Public License, either version 1.3
%% of this license or (at your option) any later version.
%% The latest version of this license is in
%% http://www.latex-project.org/lppl.txt
%% and version 1.3 or later is part of all distributions of LaTeX
%% version 2003/12/01 or later.
%%
%% See CTAN archives in directory macros/latex/base/lppl.txt.
%%
%% CONTENTS:
%% This work consists of the files dirtree.ins and dirtree.dtx.
%% Derived files are dirtree.tex and dirtree.sty.
%%
%% DESCRIPTION:
%% dirtree is a package displaying directory trees.
%%
\def\fileversion{0.1}
\def\filedate{2010/12/04}
\NeedsTeXFormat{LaTeX2e}[1995/06/01]
\ProvidesPackage{durtree}[\filedate\space v\fileversion]
\RequirePackage{zref-abspage}
\long\def\LOOP#1\REPEAT{%
\def\ITERATE{#1\relax\expandafter\ITERATE\fi}%
\ITERATE
\let\ITERATE\relax
}
\let\REPEAT=\fi
\def\@nameedef#1{\expandafter\edef\csname #1\endcsname}
\newdimen\DT@offset \DT@offset=0.2em
\newdimen\DT@width \DT@width=1em
\newdimen\DT@sep \DT@sep=0.2em
\newdimen\DT@all
\DT@all=\DT@offset
\advance\DT@all \DT@width
\advance\DT@all \DT@sep
\newdimen\DT@rulewidth \DT@rulewidth=0.4pt
\newdimen\DT@dotwidth \DT@dotwidth=1.6pt
\newdimen\DTbaselineskip \DTbaselineskip=\baselineskip
\newcount\DT@counti
\newcount\DT@countii
\newcount\DT@countiii
\newcount\DT@countiv
\newcount\DT@treenum \DT@treenum=0
\newif\ifDT@split
\def\DTsetlength#1#2#3#4#5{%
\DT@offset=#1\relax
\DT@width=#2\relax
\DT@sep=#3\relax
\DT@all=\DT@offset
\advance\DT@all by\DT@width
\advance\DT@all by\DT@sep
\DT@rulewidth=#4\relax
\DT@dotwidth=#5\relax
}
\def\DTstyle{\ttfamily}
\def\DTstylecomment{\rmfamily}
\def\DTcomment#1{%
\kern\parindent\dotfill
{\DTstylecomment{#1}}%
}
\def\dirtree#1{%
\global\advance\DT@treenum by\@ne
\let\DT@indent=\parindent
\parindent=\z@
\let\DT@parskip=\parskip
\parskip=\z@
\let\DT@baselineskip=\baselineskip
\baselineskip=\DTbaselineskip
\let\DT@strut=\strut
\def\strut{\vrule width\z@ height0.7\baselineskip depth0.3\baselineskip}%
\DT@counti=\z@
\let\next\DT@readarg
\next#1\@nil
\dimen@=\hsize
\advance\dimen@ -\DT@offset
\advance\dimen@ -\DT@width
\setbox\z@=\hbox to\dimen@{%
\hsize=\dimen@
\vbox{\@nameuse{DT@body@1}}%
}%
\dimen@=\ht\z@
\advance\dimen@ by\dp\z@
\advance\dimen@ by-0.7\baselineskip
\ht\z@=0.7\baselineskip
\dp\z@=\dimen@
\par\leavevmode
\kern\DT@offset
\kern\DT@width
\box\z@
\endgraf
\DT@countii=\@ne
\DT@countiii=\z@
\dimen3=\dimen@
\@namedef{DT@lastlevel@1}{-0.7\baselineskip}%
\loop
\ifnum\DT@countii<\DT@counti
\advance\DT@countii \@ne
\advance\DT@countiii \@ne
\dimen@=\@nameuse{DT@level@\the\DT@countii}\DT@all
\advance\dimen@ by\DT@offset
\advance\dimen@ by-\DT@all
\leavevmode
\kern\dimen@
\DT@countiv=\DT@countii
\count@=\z@
\DT@splitfalse
\LOOP
\advance\DT@countiv \m@ne
\ifnum\@nameuse{DT@level@\the\DT@countiv} >
\@nameuse{DT@level@\the\DT@countii}\relax
\else
\count@=\@ne
\fi
\ifnum0\zref@extract{DT\the\DT@treenum.\the\DT@countiv}{abspage} =
0\zref@extract{DT\the\DT@treenum.\the\DT@countii}{abspage}\relax
\else
\advance\DT@countiv\@ne
\count@=\@ne
\DT@splittrue
\fi
\ifnum\count@=\z@
\REPEAT
\edef\DT@hsize{\the\hsize}%
\count@=\@nameuse{DT@level@\the\DT@countii}\relax
\dimen@=\count@\DT@all
\advance\hsize by-\dimen@
\setbox\z@=\vbox{\@nameuse{DT@body@\the\DT@countii}}%
\hsize=\DT@hsize
\dimen@=\ht\z@
\advance\dimen@ by\dp\z@
\advance\dimen@ by-0.7\baselineskip
\ht\z@=0.7\baselineskip
\dp\z@=\dimen@
\@nameedef{DT@lastlevel@\the\DT@countii}{\the\dimen3}%
\advance\dimen3 by\dimen@
\advance\dimen3 by0.7\baselineskip
\dimen@=\@nameuse{DT@lastlevel@\the\DT@countii}\relax
\advance\dimen@ by-\@nameuse{DT@lastlevel@\the\DT@countiv}\relax
\advance\dimen@ by0.3\baselineskip
\ifnum\@nameuse{DT@level@\the\DT@countiv} <
\@nameuse{DT@level@\the\DT@countii}\relax
\advance\dimen@ by-0.5\baselineskip
\fi
\ifDT@split
\advance\dimen@ by.4\baselineskip
\fi
\kern-0.5\DT@rulewidth
\hbox{\vbox to\z@{\vss\hrule width\DT@rulewidth height\dimen@}}%
\kern-0.5\DT@rulewidth
\kern-0.5\DT@dotwidth
\vrule width\DT@dotwidth height0.5\DT@dotwidth depth0.5\DT@dotwidth
\kern-0.5\DT@dotwidth
\vrule width\DT@width height0.5\DT@rulewidth depth0.5\DT@rulewidth
\kern\DT@sep
\box\z@
\endgraf
\repeat
\parindent=\DT@indent
\parskip=\DT@parskip
\DT@baselineskip=\baselineskip
\let\strut\DT@strut
}
\def\DT@readarg.#1 #2. #3\@nil{%
\advance\DT@counti \@ne
\@namedef{DT@level@\the\DT@counti}{#1}%
\edef\DT@label{DT\the\DT@treenum.\the\DT@counti}%
\expandafter\def\csname DT@body@\the\DT@counti\expandafter\endcsname
\expandafter{\expandafter\strut\expandafter\zref@label\expandafter{%
\DT@label}%
{\DTstyle{#2}\strut}%
}
\ifx\relax#3\relax
\let\next\@gobble
\fi
\next#3\@nil
}
\endinput
%%
%% End of file `durtree.sty'.
将此文件与 dirtree.tex 进行比较以查看我所做的详细更改可能会有所帮助。基本上，我在\strut每个条目周围添加第一个绝对页面引用。然后，在排版时，它会检查当前条目的页码是否与该级别的前一个条目匹配。如果它们匹配，则不会发生任何不同（\ifDT@split为假）。否则，它只会将垂直规则绘制到当前页面上第一个条目的顶部。
我还将和改为。\dimen\z@我想从技术上讲这稍微快一点，但大多数时候它让我很烦。\dimen0\dimen@