上标/引用突出

Question

问题

我目前正在使用microtype允许某些字符突出到边距的包，并且在典型使用中大部分情况下效果很好。但我一直在尝试它并发现对于上标，包microtype似乎给了太多的余地，导致非常难看的突出。参见 MWE：

平均能量损失

\documentclass[a4paper,11pt,parskip = half*]{scrreprt}
\usepackage{libertine}  
\usepackage[T1]{fontenc}    
\usepackage[english]{babel}
\usepackage[protrusion=true,expansion=true,stretch=10]{microtype}
\usepackage{filecontents,lipsum}
\usepackage[super]{cite}

% Not really 'essential' but your code should take this into account
% Also for easier demonstration of the problem
\newcommand\mcite[1]{\,$^[$\mcitehelp#1&\relax$^]$} 
\let\svcite\cite 
\def\mcitehelp#1&#2\relax{%
    \svcite{#1}\ifx\relax#2\relax%
    \else$^,$\mcitehelp#2\relax\fi%
}
\let\cite\mcite

% References
\begin{filecontents}{samplebib.bib}
    @article{testref1,
        title = {Test title},
        journal = {Test Journal},
        author = {Test authors and others},
        volume = {1},
        year = {2016}
    }
    @article{testref2,
        title = {Test title},
        journal = {Test Journal},
        author = {Test authors and others},
        volume = {1},
        year = {2016}
    }
    @article{testref3,
        title = {Test title},
        journal = {Test Journal},
        author = {Test authors and others},
        volume = {1},
        year = {2016}
    }
    @article{testref4,
        title = {Test title},
        journal = {Test Journal},
        author = {Test authors and others},
        volume = {1},
        year = {2016}
    }
    @article{testref5,
        title = {Test title},
        journal = {Test Journal},
        author = {Test authors and others},
        volume = {1},
        year = {2016}
    }
\end{filecontents}

\begin{document}
\section{Citing and Bibliography test}
Single citations test\cite{testref1}. Multi citations test\cite{testref2,testref3}.
Protrusion is hard to test some words longgggg\mcite{testref1&testref2&testref3&testref4, testref5}.

\lipsum[1] % To see the protrusion more clearly

\bibliographystyle{plain}
\bibliography{samplebib}
\end{document}

输出如下：

请注意 Lipsum 文本中的正常突起，以及上标引用的突起。

问题

如何为上标文本设置类似的突出限制，尤其是考虑到我将引用括在方括号中？

Answer 1

我认为问题microtype本身并不在于 。相反，TeX 段落形成算法只是遇到了困难。我看到有三个选项，尽管每个选项都有缺点：

1. 重新定义\mcitehelp以包括\allowbreak允许中间引用换行；

2. 雇用sloppypar相关段落；或

3. 重写该段落以避免出现这种情况。

这是 MWE，展示了前两种方法。

\documentclass[a4paper,11pt,parskip = half*]{scrreprt}
\usepackage{libertine}  
\usepackage[T1]{fontenc}    
\usepackage[english]{babel}
\usepackage[protrusion=true,expansion=true,stretch=10]{microtype}
\usepackage{filecontents,lipsum}
\usepackage[super]{cite}

% Not really 'essential' but your code should take this into account
% Also for easier demonstration of the problem
\newcommand\mcite[1]{\,$^[$\mcitehelp#1&\relax$^]$} 
\let\svcite\cite 
\def\mcitehelp#1&#2\relax{%
    \svcite{#1}\ifx\relax#2\relax%
    \else$^,\allowbreak$\mcitehelp#2\relax\fi%
}
\let\cite\mcite

% References
\begin{filecontents}{samplebib.bib}
    @article{testref1,
        title = {Test title},
        journal = {Test Journal},
        author = {Test authors and others},
        volume = {1},
        year = {2016}
    }
    @article{testref2,
        title = {Test title},
        journal = {Test Journal},
        author = {Test authors and others},
        volume = {1},
        year = {2016}
    }
    @article{testref3,
        title = {Test title},
        journal = {Test Journal},
        author = {Test authors and others},
        volume = {1},
        year = {2016}
    }
    @article{testref4,
        title = {Test title},
        journal = {Test Journal},
        author = {Test authors and others},
        volume = {1},
        year = {2016}
    }
    @article{testref5,
        title = {Test title},
        journal = {Test Journal},
        author = {Test authors and others},
        volume = {1},
        year = {2016}
    }
\end{filecontents}

\begin{document}
\section{Citing and Bibliography test}

Single citations test\cite{testref1}. Multi citations test\cite{testref2,testref3}.
Protrusion is hard to test some words longgggg\mcite{testref1&testref2&testref3&testref4, testref5}.

\begin{sloppypar}
Single citations test\cite{testref1}. Multi citations test\cite{testref2,testref3}.
Protrusion is hard to test some words longgggg\mcite{testref1&testref2&testref3&testref4, testref5}.
\end{sloppypar}

\lipsum[1] % To see the protrusion more clearly

\bibliographystyle{plain}
\bibliography{samplebib}
\end{document}