我正在使用列表显示 R 代码。矩阵乘法运算符部分显示为粗体，如下所示：“\%\textbf{*\%}”。如果我将 * 和 % 分开，第二个 % 就不会显示为粗体。
我希望能够控制粗体，但我主要关心的是一致性。我可以接受乘法运算符为粗体或不为粗体，但将其设为 2/3 粗体看起来很奇怪。
这是重现该问题的代码。底部是 PDF 渲染。我做错了什么？
\documentclass{article}
\usepackage{graphicx,textcomp}
\usepackage{fancyvrb,listings}
\usepackage{pxfonts}
\usepackage[T1]{fontenc}
\lstloadlanguages{R}
\lstdefinelanguage{Renhanced}[]{R}{%
morekeywords={acf,ar,arima,arima.sim,colMeans,colSums,is.na,is.null,
mapply,ms,na.rm,nlmin,replicate,row.names,rowMeans,rowSums,seasonal,
sys.time,system.time,ts.plot,which.max,which.min},
deletekeywords={Call, on, codes, I, R, or}
alsoletter={\%},
alsoother={\$, \*}
}
\lstset{language=Renhanced,extendedchars=false,
basicstyle=\small\ttfamily,
commentstyle=\textsl,
showstringspaces=false,
index=[2][keywords],
indexstyle=\indexfunction
}
\begin{document}
\lstinline{a * b}
* *
\begin{lstlisting}
x <- a * b
y <- z %*% a
y <- z % * % a
\end{lstlisting}
\end{document}
以下是输出的图像：
答案1
显然，列表无法与这种类型的 配合使用otherkeywords。这可能是因为 otherkeyword 的部分必须在完整的 otherkeyword 之前定义，在本例中。我发现的唯一解决方法是在原始定义中\%*\%添加\%otherkeywords前 \%*\%，这当然也使%代码中只有一个 as 关键字。或者，您可以像\%*\%在定义中一样删除所有运算符（似乎在语言定义之后无法删除 other 关键字）。
\lstdefinelanguage{Renhanced}%
{keywords={abbreviate,abline,abs,acos,acosh,action,add1,add,%
aggregate,alias,Alias,alist,all,anova,any,aov,aperm,append,apply,%
approx,approxfun,apropos,Arg,args,array,arrows,as,asin,asinh,%
atan,atan2,atanh,attach,attr,attributes,autoload,autoloader,ave,%
axis,backsolve,barplot,basename,besselI,besselJ,besselK,besselY,%
beta,binomial,body,box,boxplot,break,browser,bug,builtins,bxp,by,%
c,C,call,Call,case,cat,category,cbind,ceiling,character,char,%
charmatch,check,chol,chol2inv,choose,chull,class,close,cm,codes,%
coef,coefficients,co,col,colnames,colors,colours,commandArgs,%
comment,complete,complex,conflicts,Conj,contents,contour,%
contrasts,contr,control,helmert,contrib,convolve,cooks,coords,%
distance,coplot,cor,cos,cosh,count,fields,cov,covratio,wt,CRAN,%
create,crossprod,cummax,cummin,cumprod,cumsum,curve,cut,cycle,D,%
data,dataentry,date,dbeta,dbinom,dcauchy,dchisq,de,debug,%
debugger,Defunct,default,delay,delete,deltat,demo,de,density,%
deparse,dependencies,Deprecated,deriv,description,detach,%
dev2bitmap,dev,cur,deviance,off,prev,,dexp,df,dfbetas,dffits,%
dgamma,dgeom,dget,dhyper,diag,diff,digamma,dim,dimnames,dir,%
dirname,dlnorm,dlogis,dnbinom,dnchisq,dnorm,do,dotplot,double,%
download,dpois,dput,drop,drop1,dsignrank,dt,dummy,dump,dunif,%
duplicated,dweibull,dwilcox,dyn,edit,eff,effects,eigen,else,%
emacs,end,environment,env,erase,eval,equal,evalq,example,exists,%
exit,exp,expand,expression,External,extract,extractAIC,factor,%
fail,family,fft,file,filled,find,fitted,fivenum,fix,floor,for,%
For,formals,format,formatC,formula,Fortran,forwardsolve,frame,%
frequency,ftable,ftable2table,function,gamma,Gamma,gammaCody,%
gaussian,gc,gcinfo,gctorture,get,getenv,geterrmessage,getOption,%
getwd,gl,glm,globalenv,gnome,GNOME,graphics,gray,grep,grey,grid,%
gsub,hasTsp,hat,heat,help,hist,home,hsv,httpclient,I,identify,if,%
ifelse,Im,image,\%in\%,index,influence,measures,inherits,install,%
installed,integer,interaction,interactive,Internal,intersect,%
inverse,invisible,IQR,is,jitter,kappa,kronecker,labels,lapply,%
layout,lbeta,lchoose,lcm,legend,length,levels,lgamma,library,%
licence,license,lines,list,lm,load,local,locator,log,log10,log1p,%
log2,logical,loglin,lower,lowess,ls,lsfit,lsf,ls,machine,Machine,%
mad,mahalanobis,make,link,margin,match,Math,matlines,mat,matplot,%
matpoints,matrix,max,mean,median,memory,menu,merge,methods,min,%
missing,Mod,mode,model,response,mosaicplot,mtext,mvfft,na,nan,%
names,omit,nargs,nchar,ncol,NCOL,new,next,NextMethod,nextn,%
nlevels,nlm,noquote,NotYetImplemented,NotYetUsed,nrow,NROW,null,%
numeric,\%o\%,objects,offset,old,on,Ops,optim,optimise,optimize,%
options,or,order,ordered,outer,package,packages,page,pairlist,%
pairs,palette,panel,par,parent,parse,paste,path,pbeta,pbinom,%
pcauchy,pchisq,pentagamma,persp,pexp,pf,pgamma,pgeom,phyper,pico,%
pictex,piechart,Platform,plnorm,plogis,plot,pmatch,pmax,pmin,%
pnbinom,pnchisq,pnorm,points,poisson,poly,polygon,polyroot,pos,%
postscript,power,ppoints,ppois,predict,preplot,pretty,Primitive,%
print,prmatrix,proc,prod,profile,proj,prompt,prop,provide,%
psignrank,ps,pt,ptukey,punif,pweibull,pwilcox,q,qbeta,qbinom,%
qcauchy,qchisq,qexp,qf,qgamma,qgeom,qhyper,qlnorm,qlogis,qnbinom,%
qnchisq,qnorm,qpois,qqline,qqnorm,qqplot,qr,Q,qty,qy,qsignrank,%
qt,qtukey,quantile,quasi,quit,qunif,quote,qweibull,qwilcox,%
rainbow,range,rank,rbeta,rbind,rbinom,rcauchy,rchisq,Re,read,csv,%
csv2,fwf,readline,socket,real,Recall,rect,reformulate,regexpr,%
relevel,remove,rep,repeat,replace,replications,report,require,%
resid,residuals,restart,return,rev,rexp,rf,rgamma,rgb,rgeom,R,%
rhyper,rle,rlnorm,rlogis,rm,rnbinom,RNGkind,rnorm,round,row,%
rownames,rowsum,rpois,rsignrank,rstandard,rstudent,rt,rug,runif,%
rweibull,rwilcox,sample,sapply,save,scale,scan,scan,screen,sd,se,%
search,searchpaths,segments,seq,sequence,setdiff,setequal,set,%
setwd,show,sign,signif,sin,single,sinh,sink,solve,sort,source,%
spline,splinefun,split,sqrt,stars,start,stat,stem,step,stop,%
storage,strstrheight,stripplot,strsplit,structure,strwidth,sub,%
subset,substitute,substr,substring,sum,summary,sunflowerplot,svd,%
sweep,switch,symbol,symbols,symnum,sys,status,system,t,table,%
tabulate,tan,tanh,tapply,tempfile,terms,terrain,tetragamma,text,%
time,title,topo,trace,traceback,transform,tri,trigamma,trunc,try,%
ts,tsp,typeof,unclass,undebug,undoc,union,unique,uniroot,unix,%
unlink,unlist,unname,untrace,update,upper,url,UseMethod,var,%
variable,vector,Version,vi,warning,warnings,weighted,weights,%
which,while,window,write,\%x\%,x11,X11,xedit,xemacs,xinch,xor,%
xpdrows,xy,xyinch,yinch,zapsmall,zip},%
otherkeywords={!,!=,~,$,*,\%,\&,\%/\%,\%*\%,\%\%,<-,<<-,_,/},%
alsoother={._$},%
sensitive,%
morecomment=[l]\#,%
morestring=[d]",%
morestring=[d]'% 2001 Robert Denham
}%