我正在使用创建序列图发展风格msc但我收到了一个Undefined control sequence错误：
! Undefined control sequence.
\GenericError ...
#4 \errhelp \@err@ ...
l.19 \end
{msc}
在下面的例子中，我可以使用命令\s和数学运算符\CMAC在从 A 向 B 发送消息或从 B 向 A 发送消息时对自己例如 B 到 B。前三条消息有效，后两条消息失败。
\documentclass{article}
\usepackage{amsmath}
\usepackage{msc}
\newcommand*{\s}[1]{\mathit{#1}}
\DeclareMathOperator*{\CMAC}{CMAC}
\begin{document}
\begin{msc}{mwe}
\declinst{A}{}{A}
\declinst{B}{}{B}
\mess{$\CMAC_{\s{k}}(x)$}{A}{B} % works
\nextlevel
\mess{$\CMAC$}{A}{B} % works
\nextlevel
\mess{$x$}{B}{B} % works
\nextlevel
\mess{$\CMAC$}{B}{B} % FAILS
\nextlevel
\mess{$\s{fails}$}{B}{B} % FAILS
\end{msc}
\end{document}
直接链接到msc.sty：https://satoss.uni.lu/software/mscpackage/development/msc.sty
我不知道我是否做错了什么，或者这是否是一个错误msc。知道为什么我会收到此错误吗？
日志档案
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\hmscconditionheight=\skip58
\hmscconditionwidth=\skip59
\hmscconnectionradius=\skip60
\hmscreferenceheight=\skip61
\hmscreferencewidth=\skip62
\hmscstartsymbolwidth=\skip63
\inlineoverlap=\skip64
\instbarwidth=\skip65
\instdist=\skip66
\instfootheight=\skip67
\instheadheight=\skip68
\instwidth=\skip69
\labeldist=\skip70
\lastlevelheight=\skip71
\leftnamedist=\skip72
\levelheight=\skip73
\lostsymbolradius=\skip74
\markdist=\skip75
\measuredist=\skip76
\measuresymbolwidth=\skip77
\mscdocreferenceheight=\skip78
\mscdocreferencewidth=\skip79
\referenceoverlap=\skip80
\regionbarwidth=\skip81
\selfmesswidth=\skip82
\stopwidth=\skip83
\timerwidth=\skip84
\topheaddist=\skip85
\topnamedist=\skip86
\c@mscinstcnt=\count124
\c@condition=\count125
\c@msclevelcnt=\count126
) (./tmp.aux)
\openout1 = `tmp.aux'.
LaTeX Font Info: Checking defaults for OML/cmm/m/it on input line 6.
LaTeX Font Info: ... okay on input line 6.
LaTeX Font Info: Checking defaults for T1/cmr/m/n on input line 6.
LaTeX Font Info: ... okay on input line 6.
LaTeX Font Info: Checking defaults for OT1/cmr/m/n on input line 6.
LaTeX Font Info: ... okay on input line 6.
LaTeX Font Info: Checking defaults for OMS/cmsy/m/n on input line 6.
LaTeX Font Info: ... okay on input line 6.
LaTeX Font Info: Checking defaults for OMX/cmex/m/n on input line 6.
LaTeX Font Info: ... okay on input line 6.
LaTeX Font Info: Checking defaults for U/cmr/m/n on input line 6.
LaTeX Font Info: ... okay on input line 6.
ABD: EveryShipout initializing macros
(/usr/share/texlive/texmf-dist/tex/context/base/mkii/supp-pdf.mkii
[Loading MPS to PDF converter (version 2006.09.02).]
\scratchcounter=\count127
\scratchdimen=\dimen170
\scratchbox=\box43
\nofMPsegments=\count128
\nofMParguments=\count129
\everyMPshowfont=\toks32
\MPscratchCnt=\count130
\MPscratchDim=\dimen171
\MPnumerator=\count131
\makeMPintoPDFobject=\count132
\everyMPtoPDFconversion=\toks33
) (/usr/share/texlive/texmf-dist/tex/latex/oberdiek/epstopdf-base.sty
Package: epstopdf-base 2016/05/15 v2.6 Base part for package epstopdf
(/usr/share/texlive/texmf-dist/tex/generic/oberdiek/infwarerr.sty
Package: infwarerr 2016/05/16 v1.4 Providing info/warning/error messages (HO)
)
(/usr/share/texlive/texmf-dist/tex/latex/oberdiek/grfext.sty
Package: grfext 2016/05/16 v1.2 Manage graphics extensions (HO)
(/usr/share/texlive/texmf-dist/tex/generic/oberdiek/kvdefinekeys.sty
Package: kvdefinekeys 2016/05/16 v1.4 Define keys (HO)
(/usr/share/texlive/texmf-dist/tex/generic/oberdiek/ltxcmds.sty
Package: ltxcmds 2016/05/16 v1.23 LaTeX kernel commands for general use (HO)
)))
(/usr/share/texlive/texmf-dist/tex/latex/oberdiek/kvoptions.sty
Package: kvoptions 2016/05/16 v3.12 Key value format for package options (HO)
(/usr/share/texlive/texmf-dist/tex/generic/oberdiek/kvsetkeys.sty
Package: kvsetkeys 2016/05/16 v1.17 Key value parser (HO)
(/usr/share/texlive/texmf-dist/tex/generic/oberdiek/etexcmds.sty
Package: etexcmds 2016/05/16 v1.6 Avoid name clashes with e-TeX commands (HO)
(/usr/share/texlive/texmf-dist/tex/generic/oberdiek/ifluatex.sty
Package: ifluatex 2016/05/16 v1.4 Provides the ifluatex switch (HO)
Package ifluatex Info: LuaTeX not detected.
)
Package etexcmds Info: Could not find \expanded.
(etexcmds) That can mean that you are not using pdfTeX 1.50 or
(etexcmds) that some package has redefined \expanded.
(etexcmds) In the latter case, load this package earlier.
)))
(/usr/share/texlive/texmf-dist/tex/generic/oberdiek/pdftexcmds.sty
Package: pdftexcmds 2018/01/21 v0.26 Utility functions of pdfTeX for LuaTeX (HO
)
(/usr/share/texlive/texmf-dist/tex/generic/oberdiek/ifpdf.sty
Package: ifpdf 2017/03/15 v3.2 Provides the ifpdf switch
)
Package pdftexcmds Info: LuaTeX not detected.
Package pdftexcmds Info: \pdf@primitive is available.
Package pdftexcmds Info: \pdf@ifprimitive is available.
Package pdftexcmds Info: \pdfdraftmode found.
)
Package epstopdf-base Info: Redefining graphics rule for `.eps' on input line 4
38.
Package grfext Info: Graphics extension search list:
(grfext) [.pdf,.png,.jpg,.mps,.jpeg,.jbig2,.jb2,.PDF,.PNG,.JPG,.JPE
G,.JBIG2,.JB2,.eps]
(grfext) \AppendGraphicsExtensions on input line 456.
(/usr/share/texlive/texmf-dist/tex/latex/latexconfig/epstopdf-sys.cfg
File: epstopdf-sys.cfg 2010/07/13 v1.3 Configuration of (r)epstopdf for TeX Liv
e
))
! Undefined control sequence.
\GenericError ...
#4 \errhelp \@err@ ...
l.19 \end
{msc}
? X
Here is how much of TeX's memory you used:
15439 strings out of 492982
326082 string characters out of 6134897
396101 words of memory out of 5000000
18744 multiletter control sequences out of 15000+600000
5138 words of font info for 19 fonts, out of 8000000 for 9000
1141 hyphenation exceptions out of 8191
66i,6n,110p,433b,965s stack positions out of 5000i,500n,10000p,200000b,80000s
No pages of output.
PDF statistics:
3 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)
答案1
开发版本使用 e-tex，但结果并非如此。你可以试试这个
\documentclass{article}
\usepackage{amsmath}
\usepackage{msc}
\makeatletter
\def\msc@selfmess#1#2#3{%
\IfStrEq{\mscget{label position}}{left}{\xdef\msc@tempc{-1}}{\xdef\msc@tempc{1}}
\xdef\msc@tempb{[\mscget{label position},/msc,message,message loop={#3},
\ifmsc@isstar replay,\fi, inner sep=0pt,
/tikz/pos=\mscget{pos}, every message, \msc@options]
(#1)
to node[xshift=\msc@tempc*\mscget{label distance}](msc@lastnode){\unexpanded\expandafter{\msc@mess@name}}
(#2);
}%use macro to expand parameters
}
\makeatother
\newcommand*{\s}[1]{\mathit{#1}}
\DeclareMathOperator*{\CMAC}{CMAC}
\begin{document}
\begin{msc}{mwe}
\declinst{A}{}{A}
\declinst{B}{}{B}
\mess{$\CMAC_{\s{k}}(x)$}{A}{B} % works
\nextlevel
\mess{$\CMAC$}{A}{B} % works
\nextlevel
\mess{$x$}{B}{B} % works
\nextlevel
\mess{$\CMAC$}{B}{B} % FAILS
\nextlevel
\mess{$\s{fails}$}{B}{B} % FAILS
\end{msc}
\end{document}