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4 changes: 3 additions & 1 deletion NEWS.md
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The second break caused by `bit64` was the addition of a `copy` function. Since `data.table::copy` is long standing we hope that `bit64` can rename its new `copy` function. Otherwise, users of `data.table` may need to prefix every occurrence of `copy` with `data.table::copy` if they use `bit64` too. Again, this impacted `data.table`'s tests which mimic a user's environment; not `data.table` itself per se.

Thanks to Cole Miller for the PR to accomodate `bit64`'s update.
Thanks to Cole Miller for the PR to accomodate `bit64`'s update.

2. `?.NGRP` now displays the help page as intended, [#4946](https://github.com/Rdatatable/data.table/issues/4649). Thanks to @KyleHaynes for posting the issue, and Cole Miller for the fix. `.NGRP` is a symbol new in v1.13.0; see below in this file.


# data.table [v1.13.0](https://github.com/Rdatatable/data.table/milestone/17?closed=1) (24 Jul 2020)
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1 change: 1 addition & 0 deletions man/special-symbols.Rd
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\alias{.BY}
\alias{.N}
\alias{.EACHI}
\alias{.NGRP}
\title{ Special symbols }
\description{
\code{.SD}, \code{.BY}, \code{.N}, \code{.I}, \code{.GRP}, and \code{.NGRP} are \emph{read-only} symbols for use in \code{j}. \code{.N} can be used in \code{i} as well. See the vignettes and examples here and in \code{\link{data.table}}.
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