Lualatex 与 polyglossia 的 \setotherlanguages 和 ntheorem 错误

Question 1

如果你确实想使用polyglossia则重置\proofname为未定义：

[...]
\usepackage{amsmath}
\usepackage{amssymb}
\let\proofname\relax
\usepackage[framed,amsmath,amsthm,thmmarks]{ntheorem}
[...]

Answer

如果你确实想使用polyglossia则重置\proofname为未定义：

[...]
\usepackage{amsmath}
\usepackage{amssymb}
\let\proofname\relax
\usepackage[framed,amsmath,amsthm,thmmarks]{ntheorem}
[...]

Question 2

好的，我想我已经接近知道为什么会发生这种情况了；我尝试过追踪：

...
\usepackage{trace}
...
  \traceon
  \setotherlanguages{greek,danish} %% (A): causes "Command \proofname already defined."; do it after ntheorem?
  \traceoff
...

{greek,danish}.. 并比较和的输出{greek,swedish}。对于瑞典语，相关跟踪是：

{blank space  }
{\par}
{\def}
{changing \captionsswedish=undefined}
{into \captionsswedish=macro:->\def \refname {Referenser}\def \abstractname \ETC
.}
{blank space  }
{\par}
{\def}
{changing \dateswedish=undefined}
{into \dateswedish=macro:->\def \today {\number \day ~\ifcase \ETC.}
{blank space  }
{\par}
{\endinput}
)
{\catcode}

... 对于丹麦语来说，它是：

{blank space  }
{\par}
{\def}
{changing \captionsdanish=undefined}
{into \captionsdanish=macro:->\def \prefacename {Forord}\def \refname \ETC.}
{\def}
{changing \proofname=undefined}
{into \proofname=macro:->Bevis}
{\def}
{changing \glossaryname=undefined}
{into \glossaryname=macro:->Gloseliste}
{\def}
{changing \today=macro:->\ifcase \month \or January\or Fe\ETC.}
{into \today=macro:->\number \day .~\ifcase \month \or \ETC.}
{blank space  }
{\par}
{\endinput}
)
{\catcode}

不知何故，除了之外\captionsdanish，此代码路径还设法 def和\proofname。为什么？让我们比较一下 .ldf 文件；有：\glossaryname\todaygloss-swedish.ldf

\def\captionsswedish{%
...
  \def\proofname{Bevis}%
  \def\glossaryname{Ordlista}%
  }

\def\dateswedish{%   
  \def\today{%
... }%
    }

... 同时gloss-danish.ldf具有：

\def\captionsdanish{%
...
  \def\alsoname{Se også}}% <--- !!
  \def\proofname{Bevis}%
  \def\glossaryname{Gloseliste}%
  \def\today{\number\day.~\ifcase\month\or
...}

如果你仔细观察，你\def\alsoname会发现二关闭括号}}，因此第二个括号关闭\captionsdanish，并将\defs 留给\proofname，\glossaryname并且\today“裸露”在“根级别”上；因此当此文件执行时，它们就会执行！

据我所知，在gloss-english.ldf中\captionsenglish- 它的设置方式与相同\captionsswedish；所以我猜这是中的语法错误\captionsdanish。所以，我猜，要真正修复此处的错误，必须干预gloss-danish.ldf。就版本而言，为了将来参考，我有这些显示此问题的版本：

$ grep '\ProvidesPackage' $(kpsewhich polyglossia.sty)
\ProvidesPackage{polyglossia}[2014/05/21 v1.33.5

$ lualatex
This is LuaTeX, Version beta-0.79.1 (TeX Live 2014) (rev 4971)

Answer