对于子目录中的文件，使用\input{filename}可以正常工作，即使包含整个前言，但当目标文件的名称中含有变音符时，我得到一个Emergency stop带有 的Missing \begin{document}。在硬链接文件后包含它（我只更改了名称中的变音符）可以正常工作。但这不是我想要的。
我想将另一个文件中的序言包含到我的实际*.tex文件中，其中包含的文件的名称包含 Umlaute。
我不确定我是否坚持我的实际。或的\documentclass{report}行为是否取决于使用的文档类？\input\include
执行的命令：$ latexmk -pdf -synctex=1 mwe-main.tex
mwe-main.tex（尽量保持示例文件最少）
\input{../ümwe}
\lipsum
\end{document}
ümwe.tex（在父目录中）
\documentclass[a4paper,12pt,ngerman]{report}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{lipsum}
\begin{document}
\newcommand{\n}{\newline}
mwe-主日志
This is pdfTeX, Version 3.14159265-2.6-1.40.19 (TeX Live 2019/dev/Debian) (preloaded format=pdflatex 2020.12.3) 29 SEP 2022 19:23
entering extended mode
restricted \write18 enabled.
%&-line parsing enabled.
**mwe-main.tex
(./mwe-main.tex
LaTeX2e <2018-12-01>
! LaTeX Error: Missing \begin{document}.
See the LaTeX manual or LaTeX Companion for explanation.
Type H <return> for immediate help.
...
l.1 \input{../ümwe}
? H
You're in trouble here. Try typing <return> to proceed.
If that doesn't work, type X <return> to quit.
? H
Sorry, I already gave what help I could...
Maybe you should try asking a human?
An error might have occurred before I noticed any problems.
``If all else fails, read the instructions.''
? H
Sorry, I already gave what help I could...
Maybe you should try asking a human?
An error might have occurred before I noticed any problems.
``If all else fails, read the instructions.''
?
LaTeX Font Info: Try loading font information for +cmr on input line 1.
LaTeX Font Info: No file cmr.fd. on input line 1.
LaTeX Font Warning: Font shape `/cmr/m/n' undefined
(Font) using `/cmr/m/n' instead on input line 1.
! Corrupted NFSS tables.
wrong@fontshape ...message {Corrupted NFSS tables}
error@fontshape else let f...
l.1 \input{../ümwe}
? H
This error message was generated by an \errmessage
command, so I can't give any explicit help.
Pretend that you're Hercule Poirot: Examine all clues,
and deduce the truth by order and method.
?
LaTeX Font Warning: Font shape `/cmr/m/n' undefined
(Font) using `OT1/cmr/m/n' instead on input line 1.
Missing character: There is no m in font nullfont!
Missing character: There is no w in font nullfont!
Missing character: There is no e in font nullfont!
! Undefined control sequence.
\UseTextAccent ...up \@firstofone \let \@curr@enc
\cf@encoding \@use@text@en...
l.1 \input{../ümwe}
? H
The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.
?
! Undefined control sequence.
\GenericError ...
#4 \errhelp \@err@ ...
l.1 \input{../ümwe}
? H
The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.
? H
Sorry, I already gave what help I could...
Maybe you should try asking a human?
An error might have occurred before I noticed any problems.
``If all else fails, read the instructions.''
?
! Undefined control sequence.
\GenericError ...
\let \@err@ ...
l.1 \input{../ümwe}
? H
The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.
? H
Sorry, I already gave what help I could...
Maybe you should try asking a human?
An error might have occurred before I noticed any problems.
``If all else fails, read the instructions.''
?
! Undefined control sequence.
\GenericError ...
\@empty \def \MessageBreak...
l.1 \input{../ümwe}
?
! Undefined control sequence.
\GenericError ...
\endgroup
l.1 \input{../ümwe}
?
! Undefined control sequence.
\GenericError ...
#4 \errhelp \@err@ ...
l.1 \input{../ümwe}
? H
The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.
? H
Sorry, I already gave what help I could...
Maybe you should try asking a human?
An error might have occurred before I noticed any problems.
``If all else fails, read the instructions.''
? X
Here is how much of TeX's memory you used:
19 strings out of 494435
263 string characters out of 6173463
52519 words of memory out of 5000000
3802 multiletter control sequences out of 15000+600000
3640 words of font info for 14 fonts, out of 8000000 for 9000
59 hyphenation exceptions out of 8191
18i,1n,19p,58b,88s stack positions out of 5000i,500n,10000p,200000b,80000s
No pages of output.
PDF statistics:
0 PDF objects out of 1000 (max. 8388607)
0 named destinations out of 1000 (max. 500000)
1 words of extra memory for PDF output out of 10000 (max. 10000000)