search for: r_inprintwarnings

...Such indications can easily be set/unset at entry/exit points of the corresponding functions, as long as there are separate handlers for warnings, errors, and printWarnings. I guess this is not likely to ever change fundamentally. As a slightly safer variation, R_inError (), R_inWarning (), and R_inPrintWarnings () could return a boolean indication only, instead of the int-code, which might be more subject to change. Description of and rationale for patch B: Patch B probably helps a lot to illustrate, how patch A works, and how this is useful. It adds an example to tests/embedding/. This example basical...