Bug: dtplyr doesn't support using dplyr::cur_column in dplyr::across

[Longfei2]

No description provided.

[Longfei2]

please see issue #314

[Longfei2]

You can see this example:

a <- data.frame(x1 =c(0, 1), x2 =c(1,0)) %>%
  dtplyr::lazy_dt() %>%
  dplyr::mutate(dplyr::across(.cols = c("x1", "x2"),
                                .fns = ~ ifelse(is.na(.x) | !.x, "", sub("x", "", dplyr::cur_column()
                                                                         )
                                                )
                                )
                  ) %>%
  dplyr::as_tibble()