Document known false positive for as.POSIXct (#2579)

r-lib · May 20, 2024 · e544a1a · e544a1a
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diff --git a/R/inner_combine_linter.R b/R/inner_combine_linter.R
@@ -6,6 +6,13 @@
 #' preferred so that the most expensive part of the operation ([as.Date()])
 #' is applied only once.
 #'
+#' Note that [strptime()] has one idiosyncrasy to be aware of, namely that
+#' auto-detected `format=` is set by the first matching input, which means
+#' that a case like `c(as.POSIXct("2024-01-01"), as.POSIXct("2024-01-01 01:02:03"))`
+#' gives different results to `as.POSIXct(c("2024-01-01", "2024-01-01 01:02:03"))`.
+#' This false positive is rare; a workaround where possible is to use
+#' consistent formatting, i.e., `"2024-01-01 00:00:00"` in the example.
+#'
 #' @examples
 #' # will produce lints
 #' lint(

diff --git a/man/inner_combine_linter.Rd b/man/inner_combine_linter.Rd