Comment about when engine args can be updated (only if they are in the original model spec)

juliasilge · juliasilge · commit 5e58b9ddc189 · 2020-07-30T11:36:04.000-06:00
diff --git a/R/misc.R b/R/misc.R
@@ -288,6 +288,7 @@ update_engine_parameters <- function(eng_args, ...) {
 
   dots <- enquos(...)
 
+  ## only update from dots when there are eng args in original model spec
   if (is_null(eng_args)) {
     ret <- NULL
   } else {
