我知道这可能不是预期的用例，但我使用以下 MWE 得到了奇怪的分页符（也使用今天的版本 1.6c 进行了测试）：
\documentclass{article}
\usepackage{mdframed}
\newcommand{\SmallBox}{%
\begin{minipage}[t]{0.9\linewidth}
top
\vspace*{2.5in}
bottom
\end{minipage}%
}
\newcommand{\BigBox}{%
\begin{mdframed}
\SmallBox
\noindent\SmallBox
\end{mdframed}%
}
\begin{document}
\BigBox
\BigBox
\end{document}
至于我为什么要这样做：我有一些想要装框的物品，但有时它们以 tikz 图片和小页面中的一些附带文本开头和/或结尾。这种材料不能分割，所以当我的物品靠近页面底部时，我经常会得到类似于我发布的示例的东西。我一直在强迫它们在这种情况下不破裂，但我希望有办法解决这个问题（因为当我添加内容时，靠近页面底部的物品会发生变化，所以我经常必须修改哪些框是不可破坏的。）
有没有办法避免手动执行此操作？这是一个错误，还是我使用得太脱离上下文了。
答案1
请测试以下重新定义：
\makeatletter
\def\mdf@put@frame@i{%Box must be splitted
\mdf@freepagevspace%gives \mdf@freevspace@length
\dimen@=\the\mdf@freevspace@length\relax%
\dimen@i=\mdf@innertopmargin@length\relax%
\advance\dimen@i by \mdf@innerlinewidth@length\relax%
\advance\dimen@i by \mdf@middlelinewidth@length\relax%
\advance\dimen@i by \mdf@outerlinewidth@length\relax%
\advance\dimen@i by 2\baselineskip\relax%
\ifdimless{\dimen@}{\dimen@i}%
{\hrule \@height\z@ \@width\hsize%
\vfill\eject%
\def\mdf@reserved@a{\mdf@put@frame}%
}%
{%
\mdf@dolist{\mdf@advancelength@freevspace@sub}{%calculate with \dimen@
outerlinewidth,middlelinewidth,innerlinewidth,%
innertopmargin,splitbottomskip}%
\ifbool{mdf@everyline}%
{%
\ifbool{mdf@bottomline}%
{%
\advance\dimen@ by -\mdf@innerlinewidth@length%
\advance\dimen@ by -\mdf@middlelinewidth@length%
\advance\dimen@ by -\mdf@outerlinewidth@length%
}{}%
}{}%
\notbool{mdf@topline}%
{%
\advance\dimen@ by \mdf@innerlinewidth@length%
\advance\dimen@ by \mdf@middlelinewidth@length%
\advance\dimen@ by \mdf@outerlinewidth@length%
}{}%
\advance\[email protected]\pageshrink
\ifdimless{\ht\mdf@splitbox@one+\dp\mdf@splitbox@one}{\dimen@}%
{\mdf@PackageWarning{You got a bad break\MessageBreak
because the last box will be empty\MessageBreak
you have to change it manually\MessageBreak
by changing the text, the space\MessageBreak
or something else}%
\advance\dimen@ by -1.8\baselineskip\relax%needed????????????????????
}{}%
\setbox\mdf@splitbox@save=\vbox{\unvcopy\mdf@splitbox@one}%
\splitmaxdepth\z@ \splittopskip\mdf@splittopskip@length%
\mdf@ignorevbadness%
\setbox\mdf@splitbox@two\vsplit\mdf@splitbox@one to \dimen@
\setbox\mdf@splitbox@two\vbox{\unvbox\mdf@splitbox@two}%
\setbox\mdf@splitbox@one\vbox{\unvbox\mdf@splitbox@one}%
\ifdimgreater{\ht\mdf@splitbox@two+\dp\mdf@splitbox@two}{\dimen@}%
{%splitted wrong
\mdf@PackageInfo{Box was splittet wrong^^J
starting loop to iterate
the splitting point\MessageBreak}%
\setbox\mdf@splitbox@one=\vbox{\unvcopy\mdf@splitbox@save}%
\dimen@i=\dimen@%\relax
\@tempcnta=\z@\relax
\loop
\ifdim\dimexpr\ht\mdf@splitbox@two+\dp\mdf@splitbox@two\relax>\dimen@
\advance\dimen@i by -\p@\relax
\advance\@tempcnta by \@ne\relax
\mdf@ignorevbadness%
\setbox\mdf@splitbox@one=\vbox{\unvcopy\mdf@splitbox@save}%
\splitmaxdepth\z@ \splittopskip\mdf@splittopskip@length%
\mdf@ignorevbadness%
\setbox\mdf@splitbox@two\vsplit\mdf@splitbox@one to \dimen@i\relax%
\setbox\mdf@splitbox@two\vbox{\unvbox\mdf@splitbox@two}%
\setbox\mdf@splitbox@one\vbox{\unvbox\mdf@splitbox@one}%
\ifnum\@tempcnta>100
\let\iterate\relax
\mdf@PackageWarning{correct box splittet fails^^J
It seems you are using a non splittable
contents\MessageBreak}
\setbox\mdf@splitbox@one=\vbox{\unvcopy\mdf@splitbox@save}%
\setbox\mdf@splitbox@two=\vbox{}%
\def\mdf@reserved@a{\mdf@put@frame}%
\fi
\repeat%
}{}%
\ifvoid\mdf@splitbox@one\relax%
\mdf@PackageWarning{You got a bad break because the splittet box
is empty^^J
You have to change the page settings^^J
like enlargethispage or something else^^J
the package increases do
\enlargethispage{\baselineskip}\MessageBreak}%
\setbox\mdf@splitbox@one=\vbox{\unvcopy\mdf@splitbox@save}
\enlargethispage{\baselineskip}%
\def\mdf@reserved@a{\mdf@put@frame}%
\fi%
\ifdim\wd\mdf@splitbox@two=\wd\mdf@splitbox@one\relax
\else%
\mdf@PackageInfo{You first box width is to small^^J
mdframed fixed it\MessageBreak}%
\setbox\mdf@splitbox@two=\vbox%
{%
\hrule \@height\z@ \@width\wd\mdf@splitbox@one\relax
\unvcopy\mdf@splitbox@two%
}%
\fi%
\ifvoid\mdf@splitbox@two\relax%
{\hrule \@height\f@size pt \@width\z@%
\hrule \@height\z@ \@width\hsize}%
\setbox\mdf@splitbox@one=\vbox{\unvcopy\mdf@splitbox@save}%
\def\mdf@reserved@a{\mdf@put@frame}%
\else%
\ifdimequal{\ht\mdf@splitbox@two}{0pt}%
{\hrule \@height\z@ \@width\hsize%
\vfill\eject%
\setbox\mdf@splitbox@one=\vbox{\unvcopy\mdf@splitbox@save}%
\def\mdf@reserved@a{\mdf@put@frame}%
}%
{%
\begingroup\mdf@@setzref\mdf@putbox@first\endgroup%
\hrule \@height\z@ \@width\hsize%
\vfill\eject%
\def\mdf@reserved@a{\mdf@put@frame@ii}%
}%
\fi%
}%
\mdf@reserved@a%
}
\makeatother