[R-SIG-Mac] checking for pdflatex

[John Fox]

Dear Berend and Simon,

I've now tried Berend's solution and it appears to work fine: If necessary, I add /usr/texbin to the path when the Rcmdr GUI starts up and restore the path to its previous state when it closes.

I agree that Simon's solution will be more flexible since it should work if pdflatex is located elsewhere (as long as it's on the path reported by path_helper), and I'll give that a try as well.

Thanks again for all the help,
 John

> -----Original Message-----
> From: Berend Hasselman [mailto:bhh at xs4all.nl]
> Sent: March-16-15 2:34 PM
> To: jfox at mcmaster.ca
> Cc: Simon Urbanek; r-sig-mac at r-project.org
> Subject: Re: [R-SIG-Mac] checking for pdflatex
> 
> John,
> 
> > On 16-03-2015, at 18:53, John Fox <jfox at mcmaster.ca> wrote:
> >
> > Dear Berend,
> > ….
> >>
> >> For what it’s worth: I have the following code in the .First function in
> >> ~/.Rprofile:
> >> (R 3.1.3 on OS X Yosemite)
> >>
> >>    if( .Platform$GUI == "AQUA" ) {
> >>        # this appends /usr/local/bin to what is already in PATH
> >>        # by default this is already in PATH (at least in 10.6.8)
> >>        # so remove any duplicated items
> >>        z <- Sys.getenv("PATH")
> >>        z <- unlist(strsplit(z,.Platform$path.sep,fixed=TRUE))
> >>        # add path to MacTeX executables for OS X Yosemite (which has a
> bug)
> >>        # in Terminal it is added automatically
> >>        z[length(z)+1] <- "/usr/texbin"
> >>
> Sys.setenv(PATH=paste(z[!duplicated(z)],collapse=.Platform$path.sep))
> >>    }
> >
> > This should work fine if pdflatex is in /usr/texbin, which I now understand is
> by far the most common case (and is the case on my Mac).
> >
> > Do you mind if I adapt your code for the Rcmdr? I can fix the path in this
> manner at startup of the Rcmdr GUI and restore it to its initial value on exit
> from the GUI.
> >
> 
> Go right ahead. Don’t forget it assumes MacTeX.
> 
> But do also have a look Simon’s suggestion of using path_helper, which
> seems more flexible than my solution:
> 
> I tried this in R-GUI
> 
> system2("/usr/libexec/path_helper","-s", stdout=TRUE)
> 
> and got this answer
> 
> [1]
> "PATH=\"/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/opt/X11/bin:/usr/texbi
> n\"; export PATH;”
> 
> which will have to be fiddled with to get something that is usable.
> 
> Berend
> 
> 
> > Thanks for this,
> > John
> >
> >>
> >> Berend
> >
> >
> > ---
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> > http://www.avast.com
> >


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