Using the Mavericks/Yosemite version of R 3.2.0, I see this:
> utils::help.search("linear models")
Error in help(db[i, "topic"], package = db[i, "Package"], lib.loc = lib, :
'topic' should be a name, length-one character vector or reserved word
Using R 3.1.2 on a SnowLeapard branch does not produce the same result. I do
get the expected large number of hits where those words are in the help pages.
It's an error message from the `help` function, so seems less likely to be
restricted to Macs. I do see that the help() code near the stop() call is the
same in both versions. I do not see where `help.search` calls `help`.
Tracing help is unrevealing. The first call to `help` throws the error and the
call looks exactly like the calls in R 3.1.2
--
David Winsemius
Alameda, CA, USA
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