'unique' error message is printed despite silent=TRUE (PR#13547)
macrakis at alum.mit.edu wrote:
In 2.8.0/Windows Vista: When 'unique' gives a type error message, it prints out even if errors are being caught:
try(unique(quote(hello)),silent=TRUE)
hello This comes from the .Internal unique routine:
try(.Internal(unique(quote(hello),NULL,NULL)),silent=TRUE)
hello I guess it is using the internal equivalent of print rather than the internal equivalent of stop.
line 454+ in src/main/unique.c:
if (!isVector(x)) {
PrintValue(x);
error(_("%s() applies only to vectors"),
(PRIMVAL(op) == 0 ? "duplicated" : "unique"));
}
in your example, quote() produces a non-vector, hence the output before
the error message.
vQ