Emacs，R，Sweave：当通过Emacs启动Sweave时，无法识别UTF-8编码

问题描述

我在Mac OS X 10.7.3中使用了R 2.14.0的Emacs 24。我有一个文件 foo.Rnw 包含

  \documentclass [
 paper = a4，％210mm×297mm 
 pagesize％将页面大小写入dvi 
] {article} 
 
 \usepackage [美式] {babel} 
 \usepackage {fancyvrb} 
 
 \usepackage [utf8] {inputenc} 
 
 \SweaveOpts {engine = R} 
 \SweaveOpts {pdf = TRUE} 
 
 \begin {document} 
一些文本
<>> = 
 sessionInfo（）
 @ 
 \end {document} 
  

我的 .emacs 与Sweave一起使用如下：

 （add-hook'Rnw-mode-hook 
 （）
（add-to-list'TeX-command-list 
'（SweaveR CMD Sweave％s
 TeX-run-command nil t：helpRun Sweave ）t 
（add-to-list'TeX-command-list 
'（StangleR CMD Stangle％s
 TeX-run-command nil t：help Run Stangle）t）
（setq TeX-command-defaultSw e）））
  

如果我使用 Cc Cc 然后选择 Sweave ， .tex 文件如下所示：

  \documentclass [
 NA 
 pagesize％将页面大小写入dvi 
] {article} 
 
 \usepackage [美] {babel} 
 \usepackage {fancyvrb} 
 
 \usepackage [utf8] {inputenc} 
 
 
 
 
 \usepackage {Sweave} 
 \begin {document} 
一些文本
 \begin {Schunk} 
 \begin {Sinput} 
> sessionInfo（）
 \end {Sinput} 
 \begin {Soutput} 
 R版本2.14.0（2011-10-31）
平台：x86_64-apple-darwin11 .2.0 / x86_64（64位）
 
 locale：
 [1] C 
 
附加的基本包：
 [1] stats graphics grDevices utils数据集方法base 
 
通过命名空间加载（而不附加）：
 [1] tools_2.14.0 
 \end {Soutput} 
 \end {Schunk 
 \end {document} 
  

如你所见，foo的第二行。包含非ASCII字符×的.nnw替换为 NA 。我可以弄清楚，这与本地化有关，其中 R 运行（另见语言环境的输出：[1] C 我可以在我的 .bashrc export LC_MESSAGES =en_US.UTF-8 c>，以便 R 获得正确的 locale ，我也可以完美使用 R CMD Sweave来自终端的foo.Rnw （当然这些加载 .bashrc ，从而设置 locale 正确）问题是：如何通过Emacs进行工作，以便我可以通过 Cc Cc Sweave 运行Sweave？我知道Emacs不知道在 .bashrc 中设置的变量，但是如何保证从Emacs运行发出的 R CMD Sweave 与我从终端执行相同的本地化？

我发现了这个问题的几个帖子，但是没有Mac和Emacs中的解决方案。再次注意到我可以完美地运行 R CMD Sweave foo.Rnw f （由于我的设置在 .bashrc ） - 大多数帖子解决这个问题 - 它只是不工作在Emacs（这是非常讨厌）。

更新：

我的〜/ .bashrc 包含：

  export LC_COLLATE =en_US.UTF-8
 export LC_CTYPE = en_US.UTF-8
 export LC_MONETARY =en_US.UTF-8
 export LC_TIME =en_US.UTF-8
 export LC_MESSAGES =en_US.UTF-8
  

按照Yihui的意见，我在〜/ Rprofile ：

 隐形（Sys.setlocale（LC_COLLATE，en_US.UTF-8 ）
 invisible（Sys.setlocale（LC_CTYPE，en_US.UTF-8））
 invisible（Sys.setlocale（LC_MONETARY，en_US.UTF-8））
 invisible（Sys.setlocale（LC_TIME，en_US.UTF-8））
 invisible（Sys.setlocale（LC_MESSAGES，en_US.UTF-8））
  

这解决了这个问题。

解决方案

最后的答案可以在 UPDATE 下找到。

@cbeleites：我不再运行Mac OS X（R 2-14），所以我不能告诉。

I work with Emacs 24 on Mac OS X 10.7.3 with R 2.14.0. I have a file foo.Rnw containing

\documentclass[
paper=a4,% 210mm × 297mm
pagesize% write page size to dvi
]{article}

\usepackage[american]{babel}
\usepackage{fancyvrb}

\usepackage[utf8]{inputenc}

\SweaveOpts{engine=R}
\SweaveOpts{pdf=TRUE}

\begin{document}
Some text
<<>>=
sessionInfo()
@
\end{document}

My .emacs for working with Sweave looks like this:

(add-hook 'Rnw-mode-hook
  (lambda ()
    (add-to-list 'TeX-command-list
         '("Sweave" "R CMD Sweave %s"
           TeX-run-command nil t :help "Run Sweave") t)
    (add-to-list 'TeX-command-list
         '("Stangle" "R CMD Stangle %s"
           TeX-run-command nil t :help "Run Stangle") t)
    (setq TeX-command-default "Sweave")))

If I use C-c C-c and then choose Sweave, the .tex file looks like this:

\documentclass[
NA
pagesize% write page size to dvi
]{article}

\usepackage[american]{babel}
\usepackage{fancyvrb}

\usepackage[utf8]{inputenc}




\usepackage{Sweave}
\begin{document}
Some text
\begin{Schunk}
\begin{Sinput}
> sessionInfo()
\end{Sinput}
\begin{Soutput}
R version 2.14.0 (2011-10-31)
Platform: x86_64-apple-darwin11.2.0/x86_64 (64-bit)

locale:
[1] C

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base

loaded via a namespace (and not attached):
[1] tools_2.14.0
\end{Soutput}
\end{Schunk}
\end{document}

As you can see, the second line of foo.Rnw containing the non-ASCII character × is replaced by NA. I could figure out that this has to do with the localization in which R runs (see also the output of locale: [1] C. I could include statements of the form export LC_MESSAGES="en_US.UTF-8" in my .bashrc so that R gets the correct locale. I can also perfectly use R CMD Sweave foo.Rnw from the terminal (which of course loads .bashrc and thus sets locale correctly). The question is: How can I make it work through Emacs, so that I can run Sweave via C-c C-c Sweave? I know that Emacs is not aware of variables set in .bashrc , but how can I guarantee that R CMD Sweave issued from Emacs runs with the same localization as when I execute it from the terminal?

I found several posts to this problem, but no solution for Macs and from within Emacs. Again, note that I can perfectly run R CMD Sweave foo.Rnw from the terminal (due to my settings in .bashrc) -- most of the posts address this issue -- it's just not working from within Emacs (which is quite annoying).

UPDATE:

My ~/.bashrc contains:

export LC_COLLATE="en_US.UTF-8"
export LC_CTYPE="en_US.UTF-8"
export LC_MONETARY="en_US.UTF-8"
export LC_TIME="en_US.UTF-8"
export LC_MESSAGES="en_US.UTF-8"

Following the advice of Yihui, I put in the following in my ~/.Rprofile:

invisible(Sys.setlocale("LC_COLLATE", "en_US.UTF-8"))
invisible(Sys.setlocale("LC_CTYPE", "en_US.UTF-8"))
invisible(Sys.setlocale("LC_MONETARY", "en_US.UTF-8"))
invisible(Sys.setlocale("LC_TIME", "en_US.UTF-8"))
invisible(Sys.setlocale("LC_MESSAGES", "en_US.UTF-8"))

This solved the problem.

解决方案

The final answer can be found under UPDATE.

@cbeleites: I do not run Mac OS X anymore (neither R 2-14) so I can't tell.

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