R version 4.6.0 alpha (2026-04-01 r89771 ucrt)
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Platform: x86_64-w64-mingw32/x64

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> source("helper/helper.R")
> 
> x = tempdir()
> res1 = backports:::file.info(x, extra_cols = TRUE)
> res2 = backports:::file.info(x, extra_cols = FALSE)
> stopifnot(is.data.frame(res1), nrow(res1) == 1L, ncol(res1) >= 7L)
> stopifnot(is.data.frame(res2), nrow(res2) == 1L, ncol(res2) == 6L)
> 
> expect_identical(res1, base::file.info(x))
> expect_identical(res1[, 1:6, drop = FALSE], res2)
> 
> proc.time()
   user  system elapsed 
   0.14    0.04    0.17