当我尝试编译我的 LaTeX 脚本时，出现错误。我没有对脚本进行任何更改。唯一的新变化（我猜）是我将操作系统从 Ubuntu 20.04 升级到了 Ubuntu 21.10。以下是错误消息（请注意，还有一个警告）。
error: line 13: File ended while scanning use of \__kernel_file_name_expand_loop:w.
error: : Incomplete \iffalse; all text was ignored after line 13.
warning: : fixltx2e is not required with releases after 2015(fixltx2e) All fixes are now in the LaTeX kernel.
您知道如何修复这个问题吗？
非常感谢您的帮助！
编辑：错误出现在第 13 行（空白行）。第 12 行是
\documentclass[journal abbreviation, manuscript]{copernicus}，该行上方只有注释。完整的错误消息是：
copernicus.cls: error: line 1241: Undefined control sequence. \regexpatchcmd{\pr@m@s}{\'}{\cA\'}{}{}
copernicus.cls: error: line 1241: Undefined control sequence. \regexpatchcmd{\pr@m@s}{\'}{\cA\'}{}{}
copernicus.cls: error: line 1241: Undefined control sequence. \regexpatchcmd{\pr@m@s}{\'}{\cA\'}{}{}
copernicus.cls: error: line 1241: Undefined control sequence. \regexpatchcmd{\pr@m@s}{\'}{\cA\'}{}{}
copernicus.cls: error: line 1241: Too many }'s. \regexpatchcmd{\pr@m@s}{\'}{\cA\'}{}{}
copernicus.cls: error: line 1242: Undefined control sequence. \xapptocmd{\ttfamily}{\in@texttttrue}{}{}
copernicus.cls: error: line 1242: Undefined control sequence. \xapptocmd{\ttfamily}{\in@texttttrue}{}{}
copernicus.cls: error: line 1242: Undefined control sequence. \xapptocmd{\ttfamily}{\in@texttttrue}{}{}
copernicus.cls: error: line 1242: Undefined control sequence. \xapptocmd{\ttfamily}{\in@texttttrue}{}{}
copernicus.cls: error: line 1242: Undefined control sequence. \xapptocmd{\ttfamily}{\in@texttttrue}{}{}
copernicus.cls: error: line 1242: Illegal parameter number in definition of \l__exp_internal_tl. \xapptocmd{\ttfamily}{\in@texttttrue}{}{}
copernicus.cls: error: line 1242: Undefined control sequence. \xapptocmd{\ttfamily}{\in@texttttrue}{}{}
copernicus.cls: error: line 1242: Illegal parameter number in definition of \l__exp_internal_tl. \xapptocmd{\ttfamily}{\in@texttttrue}{}{}
copernicus.cls: error: line 1242: Undefined control sequence. \xapptocmd{\ttfamily}{\in@texttttrue}{}{}
copernicus.cls: error: line 1242: Undefined control sequence. \xapptocmd{\ttfamily}{\in@texttttrue}{}{}
copernicus.cls: error: line 1242: Undefined control sequence. \xapptocmd{\ttfamily}{\in@texttttrue}{}{}
copernicus.cls: error: line 1473: Undefined control sequence. \global\advance\c@authnum
copernicus.cls: error: line 1478: Illegal parameter number in definition of \l__exp_internal_tl. \def\@tempa{#1
copernicus.cls: error: line 1478: Undefined control sequence. ...ef\AB@note{\AB@thenote}\else\def\AB@note
copernicus.cls: error: line 1478: Illegal parameter number in definition of \l__exp_internal_tl. ...AB@note{\AB@thenote}\else\def\AB@note{#1
copernicus.cls: error: line 1479: Undefined control sequence. \setcounter{Maxaffil}{0}
copernicus.cls: error: line 1479: Undefined control sequence. \setcounter{Maxaffil}{0}
copernicus.cls: error: line 1479: Undefined control sequence. \setcounter{Maxaffil}{0}
copernicus.cls: error: line 1479: Undefined control sequence. \setcounter{Maxaffil}{0}
copernicus.cls: error: line 1480: Missing number, treated as zero. \ifnum\value{authors}
copernicus.cls: error: line 1480: Missing = inserted for \ifnum. \ifnum\value{authors}
copernicus.cls: error: line 1480: Missing number, treated as zero. \ifnum\value{authors}
copernicus.cls: error: line 1481: Missing number, treated as zero. ...dafter\gdef\csname @sep\number\c@authors
copernicus.cls: error: line 1481: Missing \endcsname inserted. ...dafter\gdef\csname @sep\number\c@authors
copernicus.cls: error: line 1481: Undefined control sequence. ...@sep\number\c@authors\endcsname{\Authsep
copernicus.cls: error: line 1483: Undefined control sequence. \addtocounter{authors}{1}
copernicus.cls: error: line 1483: Undefined control sequence. \addtocounter{authors}{1}
copernicus.cls: error: line 1483: Undefined control sequence. \addtocounter{authors}{1}
copernicus.cls: error: line 1483: Undefined control sequence. \addtocounter{authors}{1}
copernicus.cls: error: line 1485: Undefined control sequence. ...t\@unexpandable@protect \let\and\AB@pand
copernicus.cls: error: line 1486: Use of \@xfootnotemark doesn't match its definition. \def\thanks{\protect\thanks}
copernicus.cls: error: line 1486: Use of \__kernel_file_name_expand_space:w doesn't match its definition. \def\thanks{\protect\thanks}
template.tex: error: line 13: File ended while scanning use of \__kernel_file_name_expand_loop:w.
template.tex: error: : Incomplete \iffalse; all text was ignored after line 13.
fixltx2e.sty: warning: : fixltx2e is not required with releases after 2015(fixltx2e) All fixes are now in the LaTeX kernel.
编辑2： 请查看下面的.log 文件。
This is pdfTeX, Version 3.14159265-2.6-1.40.21 (TeX Live 2020/Debian) (preloaded format=pdflatex 2022.1.19) 25 JAN 2022 14:41
entering extended mode
restricted \write18 enabled.
%&-line parsing enabled.
**template.tex
(./template.tex
LaTeX2e <2020-10-01> patch level 4
L3 programming layer <2021-01-09> xparse <2020-03-03> (./copernicus.cls
Document Class: copernicus 2021/12/08 9.39 Copernicus papers
(/usr/share/texlive/texmf-dist/tex/latex/base/fixltx2e.sty
Package: fixltx2e 2016/12/29 v2.1a fixes to LaTeX (obsolete)
Applying: [2015/01/01] Old fixltx2e package on input line 46.
Package fixltx2e Warning: fixltx2e is not required with releases after 2015
(fixltx2e) All fixes are now in the LaTeX kernel.
(fixltx2e) See the latexrelease package for details.
Already applied: [0000/00/00] Old fixltx2e package on input line 53.
)
Additional configuration file copernicus.cfg used
(./copernicus.cfg) (/usr/share/texlive/texmf-dist/tex/latex/base/article.cls
Document Class: article 2020/04/10 v1.4m Standard LaTeX document class
(/usr/share/texlive/texmf-dist/tex/latex/base/fleqn.clo
File: fleqn.clo 2016/12/29 v1.2b Standard LaTeX option (flush left equations)
\mathindent=\skip47
Applying: [2015/01/01] Make \[ robust on input line 50.
LaTeX Info: Redefining \[ on input line 51.
Already applied: [0000/00/00] Make \[ robust on input line 62.
Applying: [2015/01/01] Make \] robust on input line 74.
LaTeX Info: Redefining \] on input line 75.
Already applied: [0000/00/00] Make \] robust on input line 83.
)
(/usr/share/texlive/texmf-dist/tex/latex/base/size10.clo
File: size10.clo 2020/04/10 v1.4m Standard LaTeX file (size option)
)
\c@part=\count177
\c@section=\count178
\c@subsection=\count179
\c@subsubsection=\count180
\c@paragraph=\count181
\c@subparagraph=\count182
\c@figure=\count183
\c@table=\count184
\abovecaptionskip=\skip48
\belowcaptionskip=\skip49
\bibindent=\dimen138
)
\bleed=\dimen139
\longtwo@top=\skip50
\longtwo@bottom=\skip51
\longtwo@box=\box47
(/usr/share/texlive/texmf-dist/tex/generic/ulem/ulem.sty
\UL@box=\box48
\UL@hyphenbox=\box49
\UL@skip=\skip52
\UL@hook=\toks15
\UL@height=\dimen140
\UL@pe=\count185
\UL@pixel=\dimen141
\ULC@box=\box50
Package: ulem 2019/11/18
\ULdepth=\dimen142
)
(/usr/share/texlive/texmf-dist/tex/latex/base/fontenc.sty
Package: fontenc 2020/08/10 v2.0s Standard LaTeX package
)
(/usr/share/texlive/texmf-dist/tex/latex/base/textcomp.sty
Package: textcomp 2020/02/02 v2.0n Standard LaTeX package
)
(/usr/share/texlive/texmf-dist/tex/latex/upquote/upquote.sty
Package: upquote 2012/04/19 v1.3 upright-quote and grave-accent glyphs in verba
tim
)
(/usr/share/texlive/texmf-dist/tex/latex/regexpatch/regexpatch.sty
(/usr/share/texlive/texmf-dist/tex/latex/l3kernel/expl3.sty
Package: expl3 2021-01-09 L3 programming layer (loader)
(/usr/share/texlive/texmf-dist/tex/latex/l3backend/l3backend-pdftex.def
File: l3backend-pdftex.def 2020-01-29 L3 backend support: PDF output (pdfTeX)
\l__color_backend_stack_int=\count186
\l__pdf_internal_box=\box51
))
Package: regexpatch 2020/10/06 v0.2e Extending etoolbox patching commands
(/usr/share/texlive/texmf-dist/tex/latex/l3packages/xparse/xparse.sty
Package: xparse 2020-10-27 L3 Experimental document command parser
(/usr/share/texlive/texmf-dist/tex/latex/l3packages/xparse/xparse-generic.tex))
)
! Undefined control sequence.
<argument> \LaTeX3 error:
Use \cs_replacement_spec:N not \token_get_replace...
l.1241 \regexpatchcmd{\pr@m@s}{\'}{\cA\'}{}{}
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.
<argument> \LaTeX3 error:
Use \cs_prefix_spec:N not \token_get_prefix_spec:...
l.1241 \regexpatchcmd{\pr@m@s}{\'}{\cA\'}{}{}
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.
<argument> \LaTeX3 error:
Use \cs_argument_spec:N not \token_get_arg_spec:N...
l.1241 \regexpatchcmd{\pr@m@s}{\'}{\cA\'}{}{}
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.
<argument> \LaTeX3 error:
Use \cs_replacement_spec:N not \token_get_replace...
l.1241 \regexpatchcmd{\pr@m@s}{\'}{\cA\'}{}{}
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.
! Too many }'s.
\l__exp_internal_tl ->\egroup
\tex_def:D \xpatch_tmpa:w \egroup {\egroup }
l.1241 \regexpatchcmd{\pr@m@s}{\'}{\cA\'}{}{}
You've closed more groups than you opened.
Such booboos are generally harmless, so keep going.
! Undefined control sequence.
<argument> \LaTeX3 error:
Use \cs_replacement_spec:N not \token_get_replace...
l.1242 \xapptocmd{\ttfamily}{\in@texttttrue}{}{}
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.
<argument> \LaTeX3 error:
Use \cs_prefix_spec:N not \token_get_prefix_spec:...
l.1242 \xapptocmd{\ttfamily}{\in@texttttrue}{}{}
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.
\expand@font@defaults ->\edef \rmdef@ult
{\rmdefault }\edef \sfdef@ult {\sfd...
l.1242 \xapptocmd{\ttfamily}{\in@texttttrue}{}{}
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.
\expand@font@defaults ...efault }\edef \sfdef@ult
{\sfdefault }\edef \ttdef@...
l.1242 \xapptocmd{\ttfamily}{\in@texttttrue}{}{}
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.
\expand@font@defaults ...efault }\edef \ttdef@ult
{\ttdefault }\series@maybe...
l.1242 \xapptocmd{\ttfamily}{\in@texttttrue}{}{}
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.
! Illegal parameter number in definition of \l__exp_internal_tl.
<to be read again>
1
l.1242 \xapptocmd{\ttfamily}{\in@texttttrue}{}{}
You meant to type ## instead of #, right?
Or maybe a } was forgotten somewhere earlier, and things
are all screwed up? I'm going to assume that you meant ##.
! Undefined control sequence.
<argument> \bfdef@ult
l.1242 \xapptocmd{\ttfamily}{\in@texttttrue}{}{}
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.
! Illegal parameter number in definition of \l__exp_internal_tl.
<to be read again>
1
l.1242 \xapptocmd{\ttfamily}{\in@texttttrue}{}{}
You meant to type ## instead of #, right?
Or maybe a } was forgotten somewhere earlier, and things
are all screwed up? I'm going to assume that you meant ##.
! Undefined control sequence.
<argument> \mddef@ult
l.1242 \xapptocmd{\ttfamily}{\in@texttttrue}{}{}
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.
\prepare@family@series@update ...get@series@value
\@empty \def \target@meta@...
l.1242 \xapptocmd{\ttfamily}{\in@texttttrue}{}{}
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.
\prepare@family@series@update ...eta@family@value
{#1}\expandafter \edef \cs...
l.1242 \xapptocmd{\ttfamily}{\in@texttttrue}{}{}
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.
l.1473 \global\advance\c@authnum
\@ne
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.
! Illegal parameter number in definition of \l__exp_internal_tl.
<to be read again>
1
l.1478 \def\@tempa{#1
}\ifx\@tempa\@empty\def\AB@note{\AB@thenote}\els...
You meant to type ## instead of #, right?
Or maybe a } was forgotten somewhere earlier, and things
are all screwed up? I'm going to assume that you meant ##.
! Undefined control sequence.
l.1478 ...ef\AB@note{\AB@thenote}\else\def\AB@note
{#1}%
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.
! Illegal parameter number in definition of \l__exp_internal_tl.
<to be read again>
1
l.1478 ...AB@note{\AB@thenote}\else\def\AB@note{#1
}%
You meant to type ## instead of #, right?
Or maybe a } was forgotten somewhere earlier, and things
are all screwed up? I'm going to assume that you meant ##.
! Undefined control sequence.
\GenericError ...
#4 \errhelp \@err@ ...
l.1479 \setcounter{Maxaffil}{0}
\fi
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 ...
\let \@err@ ...
l.1479 \setcounter{Maxaffil}{0}
\fi
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 ...
\@empty \def \MessageBreak...
l.1479 \setcounter{Maxaffil}{0}
\fi
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 ...
\endgroup
l.1479 \setcounter{Maxaffil}{0}
\fi
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.
! Missing number, treated as zero.
<to be read again>
\c@authors
l.1480 \ifnum\value{authors}
>1\relax
A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)
! Missing = inserted for \ifnum.
<to be read again>
\c@authors
l.1480 \ifnum\value{authors}
>1\relax
I was expecting to see `<', `=', or `>'. Didn't.
! Missing number, treated as zero.
<to be read again>
\c@authors
l.1480 \ifnum\value{authors}
>1\relax
A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)
! Missing number, treated as zero.
<to be read again>
\c@authors
l.1481 ...dafter\gdef\csname @sep\number\c@authors
\endcsname{\Authsep}%
A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)
! Missing \endcsname inserted.
<to be read again>
\c@authors
l.1481 ...dafter\gdef\csname @sep\number\c@authors
\endcsname{\Authsep}%
The control sequence marked <to be read again> should
not appear between \csname and \endcsname.
! Undefined control sequence.
l.1481 ...@sep\number\c@authors\endcsname{\Authsep
}%
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.1483 \addtocounter{authors}{1}
%
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 ...
\let \@err@ ...
l.1483 \addtocounter{authors}{1}
%
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 ...
\@empty \def \MessageBreak...
l.1483 \addtocounter{authors}{1}
%
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 ...
\endgroup
l.1483 \addtocounter{authors}{1}
%
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.
l.1485 ...t\@unexpandable@protect \let\and\AB@pand
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.
! Use of \@xfootnotemark doesn't match its definition.
<argument> ...ootnotemark \q__file_recursion_tail
l.1486 \def\thanks{\protect\thanks}
\def\footnote{\protect\footnote}%
If you say, e.g., `\def\a1{...}', then you must always
put `1' after `\a', since control sequence names are
made up of letters only. The macro here has not been
followed by the required stuff, so I'm ignoring it.
! Use of \__kernel_file_name_expand_space:w doesn't match its definition.
\__kernel_file_name_expand_loop:w ...cursion_stop
l.1486 \def\thanks{\protect\thanks}
\def\footnote{\protect\footnote}%
If you say, e.g., `\def\a1{...}', then you must always
put `1' after `\a', since control sequence names are
made up of letters only. The macro here has not been
followed by the required stuff, so I'm ignoring it.
)
Runaway argument?
\fi \if@stage@final \else \if@cop@home \ifonline \let \orig@psheadings \ETC.
! File ended while scanning use of \__kernel_file_name_expand_loop:w.
<inserted text>
\par
l.13
I suspect you have forgotten a `}', causing me
to read past where you wanted me to stop.
I'll try to recover; but if the error is serious,
you'd better type `E' or `X' now and fix your file.
)
! Incomplete \iffalse; all text was ignored after line 13.
<inserted text>
\fi
<*> template.tex
The file ended while I was skipping conditional text.
This kind of error happens when you say `\if...' and forget
the matching `\fi'. I've inserted a `\fi'; this might work.
! Emergency stop.
<*> template.tex
*** (job aborted, no legal \end found)
Here is how much of TeX's memory you used:
1646 strings out of 481252
22785 string characters out of 5915888
320674 words of memory out of 5000000
18635 multiletter control sequences out of 15000+600000
404299 words of font info for 29 fonts, out of 8000000 for 9000
14 hyphenation exceptions out of 8191
82i,0n,89p,323b,126s stack positions out of 5000i,500n,10000p,200000b,80000s
! ==> Fatal error occurred, no output PDF file produced!
答案1
感谢第一篇文章评论中的回复，解决方案如下：
这是 regexpatch 0.2e 中的一个问题，已在 0.2f 中得到解决。最新版本可从此处下载：ctan.org/tex-archive/macros/latex/contrib/regexpatch。