search for: havehandler

Hi, I'm currently trying to use R as a back-end from an interface (you may have seen me on the help list), and I'm running into something that is rather confusing. The following lines in main/errors.c of R 1.5.1: 439: if ( !R_Interactive && !haveHandler && inError ) { 440: REprintf("Execution halted\n"); 441: R_CleanUp(SA_NOSAVE, 1, 0); /* quit, no save, no .Last, status=1 */ 442: } Which seems to not make any sense at all. I've scoured the code and can't figure out what the rationale is for halting ex...

...ecover(), and when stop() finally finishes NOTHING else has been printed out - no additional traceback, nothing. So why are we calling jump_to_top_ex() with traceback=TRUE, what good does the call to R_GetTraceback() do? That jump_to_top_ex() code only calls R_GetTraceback() when R_Interactive or haveHandler are true. I am certainly running interactively here, and I did define a handler with options("error"=). But AFAICT, my handler makes no use whatsoever of any of the work done by R_GetTraceback(). In fact, I don't see any way it could even if I wanted it to. And if I remove my handl...