wjones127 commented on code in PR #14679:
URL: https://github.com/apache/arrow/pull/14679#discussion_r1033836090


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r/R/csv.R:
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@@ -418,6 +418,8 @@ CsvTableReader$create <- function(file,
 #' The `CsvWriteOptions$create()` factory method takes the following arguments:
 #' - `include_header` Whether to write an initial header line with column names
 #' - `batch_size` Maximum number of rows processed at a time. Default is 1024.
+#' - `null_string` The string to be written for null values. Must not contain
+#'   quotation marks. Default is `NA`.

Review Comment:
   Perhaps our goal should be to support the `readr` options, but not 
necessarily to match the `readr` defaults. Does that seem like a reasonable 
policy? Right now the function takes `readr` arguments as a convenience, and 
also has Arrow-specific parameter that may overlap. It seems like if we wanted 
an API that matched the defaults, we should have a separate API that 
exclusively took `readr` options.



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