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https://issues.apache.org/jira/browse/ARROW-17724?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17604024#comment-17604024
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Nicola Crane commented on ARROW-17724:
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Nicely spotted. This is due to {{is.name((fns))}} in the {{across_setup()}}
function evaluating to {{TRUE}} for {{as.character}} and {{FALSE}} for
{{base::as.character}}. Adding {{is.call(fns)}} to the list of conditions for
identifying single functions could work, or potentially replacing
{{is.name(fns)}} with {{is.call(fns)}} or another function entirely.
> [R] Allow package name prefix inside dplyr::across's .fns argument
> ------------------------------------------------------------------
>
> Key: ARROW-17724
> URL: https://issues.apache.org/jira/browse/ARROW-17724
> Project: Apache Arrow
> Issue Type: Bug
> Components: R
> Affects Versions: 10.0.0
> Reporter: SHIMA Tatsuya
> Priority: Major
>
> This is not a major issue, but may be worth mentioning as a known limitation.
> {code:r}
> library(dplyr, warn.conflicts = FALSE)
> library(dplyr, warn.conflicts = FALSE)
> mtcars |> arrow::arrow_table() |> mutate(across(starts_with("c"),
> base::as.character)) |> collect()
> #> Error in base(cyl): could not find function "base"
> {code}
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