According the R-ints the only current uses of the `truelength` meta datum is for environment hash tables.? Jim Hester just made me aware that R3.4.0 introduces a new use case: growable vectors. I attach a patch to the R-ints manual that reflects this change.? The wording is obviously just a suggestion.? Additionally, it may be worth moving the footnote into the main body of the document now that there are more use cases. Best, Brodie. -------------- next part -------------- An embedded and charset-unspecified text was scrubbed... Name: R-ints-patch.txt URL: <https://stat.ethz.ch/pipermail/r-devel/attachments/20190226/edd23391/attachment.txt>