remove overly-cautious keepNA=TRUE

Rdatatable · May 9, 2024 · bb63c8b · bb63c8b
1 parent 29ee88b
commit bb63c8b
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/R/merge.R b/R/merge.R
@@ -59,7 +59,7 @@ merge.data.table = function(x, y, by = NULL, by.x = NULL, by.y = NULL, all = FAL
   if (length(list(...))) {
     ell = as.list(substitute(list(...)))[-1L]
     for (n in setdiff(names(ell), "")) warningf("Unknown argument '%s' has been passed.", n)
-    unnamed_n = length(ell) - sum(nzchar(names(ell), keepNA=TRUE))
+    unnamed_n = length(ell) - sum(nzchar(names(ell)))
     if (unnamed_n)
       warningf("Passed %d unknown and unnamed arguments.", unnamed_n)
   }