Strange behavior with [, , drop = TRUE] and nrow() == 1

[krlmlr]

tibble::tibble(a = 1:3, b = 4:6)[1,, drop = TRUE]
#> $a
#> [1] 1
#> 
#> $b
#> [1] 4

Created on 2018-07-30 by the reprex package (v0.2.0).

[anhqle]

What's the expected behavior here? Is tibble not supposed to work like data.frame in this regard?

> data.frame(a = 1:3, b = 4:6)[1,, drop = TRUE]
$a
[1] 1

$b
[1] 4

[krlmlr]

Thanks, in this case we just keep the data frame behavior (but add a comment to the surprising section in the code).

[hadley]

I'm not sure how we got to this place - I strongly believe that [ should only ever return a data frame, and this list special case is a bad idea.

[krlmlr]

Looks like we reimplemented the behavior of "[.data.frame"() by accident. More than happy to change this.

[github-actions]

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