On Wed, Sep 10, 2008 at 11:33 PM, Prof Brian Ripley
<[EMAIL PROTECTED]> wrote:
> If firefox is involved on a Mac, that is one difference. My Mac is using
> 'open' (the default, I believe) and that is calling Safari (the default, I
> believe).
>
> Yes, it would be the job of browseURL to encode URLs where required. But at
> least on Windows and using the -remoteURL mechanism (as on Linux) it is not.
> R itself does have URLencode.
Thanks for pointing out URLencode(); I'll update (my very old)
R.utils::toUrl() to use that and eventually deprecate it.
/Henrik
>
> On Thu, 11 Sep 2008, Rolf Turner wrote:
>
>>
>> On 11/09/2008, at 10:09 AM, Marc Schwartz wrote:
>>
>> <snip>
>>
>>> As Prof. Ripley noted, try using debug(RSiteSearch) and then step
>>> through the code to see where $HOME is being added to the URL variable.
>>> That can help pin it down further. If the URL is not corrupted by the
>>> time browseURL() is called, then use debug(browseURL) to trace within
>>> that function to see if something is happening there.
>>
>> I have done some digging. When I do:
>>
>> RSiteSearch("logistic regression")
>>
>> the RSiteSearch() function calls browseURL(qstring) where qstring
>> is qs1 equal to
>>
>>
>>
>> "http://search.r-project.org/cgi-bin/namazu.cgi?query=logistic+regression&max=20&result=normal&sort=score&idxname=Rhelp02a&idxname=functions&idxname=docs";
>>
>>
>> Similarly when I do RSiteSearch("{logistic regression}") qstring is
>> qs2 equal to
>>
>>
>>
>> "http://search.r-project.org/cgi-bin/namazu.cgi?query={logistic+regression}&max=20&result=normal&sort=score&idxname=Rhelp02a&idxname=functions&idxname=docs";
>>
>> i.e. the same except for the braces.
>>
>> If I do browseURL(qs1) outside of RSiteSearch() it works as
>> expected.
>> If I do browseURL(qs2) I get the error.
>>
>> Inside browseURL I find that it calls
>>
>> system(paste(browser, remoteCmd, "> /dev/null 2>&1 ||", browser,
>> quotedUrl, "&"))
>>
>> and browser is "/usr/bin/open", remoteCmd is the qstring with the
>> opening and closing
>> quote marks attached (escaped with a ``\'') amd quotedUrl is the
>> same. This is true
>> irrespective of which qstring (qs1 or qs2 is used).
>>
>> Note that the double backslash shows up in remoteCmd == quotedUrl
>> at this stage.
>>
>> Finally I put the system command into a file ``junk'' and from the
>> command window
>> (outside R) executed ``sh junk''.
>>
>> With the braces around ``logistic regression'' I can the same error
>> message that
>> I got in R. When I simply edited out the braces, the Firefox
>> window opened at
>> the appropriate URL. So the problem is in those braces and the
>> single/double
>> backslash at the start was a red herring.
>>
>> Finally, while I was doing all this I got Henrik Bengtsson's
>> message, and tried
>> his suggestion:
>>
>> library(R.utils)
>> browseURL(toUrl(qs2))
>>
>> and BINGO!!! that worked. (Thanks very much, Henrik.)
>>
>> It's still mysterious why the braces have their deleterious impact
>> on my Mac
>> but do not have that impact on Professor Ripley's machine. (But
>> that's the
>> story of my life: THEY always pick on ***me***! :-) )
>>
>> So my problem is solved --- via a workaround --- but there's still
>> some vestigial
>> strangeness.
>>
>> Thanks to all who helped me, especially (again) to Henrik Bengtsson
>>
>> cheers,
>>
>> Rolf
>>
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>
> --
> Brian D. Ripley, [EMAIL PROTECTED]
> Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
> University of Oxford, Tel: +44 1865 272861 (self)
> 1 South Parks Road, +44 1865 272866 (PA)
> Oxford OX1 3TG, UK Fax: +44 1865 272595
>
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