* happens, the quality of the error message rewrite falls drastically
     * (and unavoidably).
     */

    if (isRootEnsemble) {
	iPtr->ensembleRewrite.sourceObjs = objv;
	iPtr->ensembleRewrite.numRemovedObjs = toRewrite;
	iPtr->ensembleRewrite.numInsertedObjs = rewriteLength;
	iPtr->ensembleRewrite.numInsertedObjs = rewriteLength - 1;
    } else {
	int numIns = iPtr->ensembleRewrite.numInsertedObjs;

	if (numIns < toRewrite) {
	    iPtr->ensembleRewrite.numRemovedObjs += toRewrite - numIns;
	    iPtr->ensembleRewrite.numInsertedObjs += rewriteLength - 1;
	} else {