[R] "R CMD Rd2txt" generate "_^H" for in all section titles

Jeff Newmiller jdnewmil at dcn.davis.CA.us
Fri Nov 14 04:28:48 CET 2014

> Which text editor can actually display _^H correct?

Not aware of any. It is from very old line printer behavior, which most (all?) printers can still support even though few computers are set up to utilize it.
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On November 13, 2014 6:41:05 PM PST, Zheng Da <zhengda1936 at gmail.com> wrote:
>Thank you. Great help!
>Given your information, we can generate text files without _^H with
>the following command:
>echo "tools::Rd2txt(\"$input_file\", out=\"$output_file\",
>options=list(underline_titles=FALSE))" | R --no-save
>It's kind tedious though.
>I'm just curious. Which text editor can actually display _^H correct?
>I normally use vim. I also tried gedit. I even tried a web browser
>On Thu, Nov 13, 2014 at 8:29 PM, David Winsemius
><dwinsemius at comcast.net> wrote:
>> On Nov 13, 2014, at 11:51 AM, Zheng Da wrote:
>>> Hello,
>>> I'm trying to generate plain text from the .Rd files. I run "R CMD
>>> Rd2txt xx.Rd -o xx.txt" to get the plain text file. When I open the
>>> text file, I see "_^H" in front of each character in all section
>>> titles. I can't figure out where the problem is. If I don't specify
>>> argument, "R CMD Rd2txt" prints on the standard output correctly.
>>> should I do to output everything correctly to a file?
>> I think your (unstated) editor is displaying backspaces with ^H. The
>Section Header convention in Rd files is with interspersed underscores
>so they look like:
>> _ D_ e_ s_ c_ r_ i_ p_ t_ i_ o_ n:
>> The ^H's are apparently being put in to "erase" or squeeze together
>the text separated by <underscores> and your editor is not handling it
>in the manner expected.
>>> Thanks,
>>> Da
>>> ______________________________________________
>>> R-help at r-project.org mailing list
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>>> PLEASE do read the posting guide
>>> and provide commented, minimal, self-contained, reproducible code.
>> David Winsemius
>> Alameda, CA, USA
>R-help at r-project.org mailing list
>PLEASE do read the posting guide
>and provide commented, minimal, self-contained, reproducible code.

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