我已经升级到 TeX Live 2017，并注意到连字符行为与 2016 相比发生了变化。更明确地说，虽然连字符以前有效，但对于相同的源文件，不再有连字符。
我把这个问题追溯到德语polyglossia选项上。latesthyphen
\documentclass{article}
\usepackage{polyglossia}
\setdefaultlanguage[latesthyphen=true]{german}
\begin{document}
Normaler Text. Normaler Text. Normaler Text. Normaler Text. Normaler Text. Normaler Text. Normaler Text.
Telekommunikationsüberwachung geht Unternehmenssteuerfortentwicklungsgesetz
\end{document}
对于latesthyphen=true一个得到
对于latesthyphen=false一个得到
这是否可能是一个错误？我找不到任何文档表明有意更改了多语制...
编辑——这是日志文件：
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LaTeX Font Info: Redeclaring symbol font `operators' on input line 5.
LaTeX Font Info: Encoding `OT1' has changed to `TU' for symbol font
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(Font) OT1/cmr/m/n --> TU/lmr/m/n on input line 5.
LaTeX Font Info: Encoding `OT1' has changed to `TU' for symbol font
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Language ngerman-x-latest not found in language.dat.lua
Language ngerman-x-latest not found in language.dat.lua
Overfull \hbox (26.77pt too wide) in paragraph at lines 8--9
[]\TU/lmr/m/n/10 Telekommunikationsüberwachung geht Unternehmenssteuerfortentw
icklungsgesetz
[]
[1
{/usr/local/texlive/2017basic/texmf-var/fonts/map/pdftex/updmap/pdftex.map}]
(./Sandbox.aux
luatex-hyphen: loading patterns and exceptions for: german (\language4)
luatex-hyphen: info: no hyphenation exceptions for this language
Language ngerman-x-latest not found in language.dat.lua))
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10804 strings out of 494481
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3 hlist, 1 vlist, 1 rule, 2 glue, 4 attribute, 49 glue_spec, 4 attribute_list
, 1 write nodes
avail lists: 1:1,2:23,3:8,4:2,5:40,6:167,7:32,8:1,9:9,10:1
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25 fonts using 5677367 bytes
41i,4n,35p,848b,229s stack positions out of 5000i,500n,10000p,200000b,100000s
</usr/local/texlive/2017basic/texmf-dist/fonts/opentype/public/lm/lmroman10-regu
lar.otf>
Output written on Sandbox.pdf (1 page, 5293 bytes).
PDF statistics: 15 PDF objects out of 1000 (max. 8388607)
8 compressed objects within 1 object stream
0 named destinations out of 1000 (max. 131072)
1 words of extra memory for PDF output out of 10000 (max. 100000000)
感兴趣的线索可能是：
Language ngerman-x-latest not found in language.dat.lua
答案1
在我看来，“简约主义方法”注定会失败，您的问题就是很好的例子。
为了找到支持德语连字符的软件包，你可以在终端窗口中尝试
tlmgr info dehyph
（最近已为连字文件指定了统一的名称）。我的机器上的输出是
tlmgr: cannot find package dehyph, searching for other matches:
Packages containing `dehyph' in their title/description:
dehyph-exptl - Experimental hyphenation patterns for the German language
hyphen-german - German hyphenation patterns.
Packages containing files matching `dehyph':
00texlive.image:
tlpkg/tlpsrc/dehyph-exptl.tlpsrc
dehyph-exptl:
texmf-dist/doc/generic/dehyph-exptl/CHANGES
texmf-dist/doc/generic/dehyph-exptl/INSTALL
texmf-dist/doc/generic/dehyph-exptl/LICENSE
texmf-dist/doc/generic/dehyph-exptl/README
texmf-dist/doc/generic/dehyph-exptl/dehyph-exptl.bib
texmf-dist/doc/generic/dehyph-exptl/dehyph-exptl.pdf
texmf-dist/doc/generic/dehyph-exptl/dehyph-exptl.tex
texmf-dist/tex/generic/dehyph-exptl/dehyphn-x-2017-03-31.pat
texmf-dist/tex/generic/dehyph-exptl/dehyphn-x-2017-03-31.tex
texmf-dist/tex/generic/dehyph-exptl/dehypht-x-2017-03-31.pat
texmf-dist/tex/generic/dehyph-exptl/dehypht-x-2017-03-31.tex
texmf-dist/tex/generic/dehyph-exptl/dehyphts-x-2017-03-31.pat
texmf-dist/tex/generic/dehyph-exptl/dehyphts-x-2017-03-31.tex
hyphen-german:
texmf-dist/tex/generic/hyphen/dehyphn.tex
texmf-dist/tex/generic/hyphen/dehypht.tex
texmf-dist/tex/generic/hyphen/dehyphtex.tex
现在您知道实验性德语连字模式所需的包是dehyph-exptl。