Thanks for the feedback Dirk. I sent my follow-up before I saw it.
Looking at the source code, it appears that there is no options() call to turn this on.
Nor does "R --help" reveal a command line option.
How then does a user turn this on outside of the R CMD check envirionment, so as to chase
things like this down?
The fact that 1. renaming my function makes the error go away, 2. my function is just a
wrapper to inherits(), and 3. its a new error in code that hasn't changed, all point me
towards some oddity with the check function.
Terry
On 1/13/20 10:22 AM, Dirk Eddelbuettel wrote:
On 13 January 2020 at 10:02, Therneau, Terry M., Ph.D. via R-devel wrote:
| Where can I find out (and replicate) what options as-cran turns on?
See the file src/library/tools/R/check.R in the R sources, and grep for
as_cran which is the internal variable controlled by the --as-cran option
[...]
| The check log contains multiple instances of the lines below:
|
| < Warning message:
| < In if (ismat(kmat)) { :
| < the condition has length > 1 and only the first element will be used
|
| I don't see how the error could arise, but if I know what as-cran is doing
perhaps I can
| replicate it.
This was widely discussed on this list and should also be in the NEWS file.
The change is about what the message says: the if () tests a scalar logical,
it appears that ismat(kmat) returns more than a scalar.
There has always been an opt-in for this to error -- cf many messages by Henrik
over the years as he tried to convince us all to use it more.
Dirk
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