ianmcook commented on a change in pull request #9798:
URL: https://github.com/apache/arrow/pull/9798#discussion_r600751291



##########
File path: r/R/dplyr.R
##########
@@ -216,6 +215,52 @@ column_select <- function(.data, ..., .FUN = vars_select) {
   .data
 }
 
+relocate.arrow_dplyr_query <- function(.data, ..., .before = NULL, .after = 
NULL) {
+  .data <- arrow_dplyr_query(.data)
+
+  # TODO: look for unsupported tidyselect selection helpers in exprs(...),
+  # .before, and .after and throw an error if detected

Review comment:
       Currently when expressions in `relocate()` use unsupported tidyselect 
helpers, sometimes they silently do nothing and other times they fail with 
unhelpful error messages. Should I dig into this now or create a Jira for 
follow-up later? 




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