broken save(..., compress="xy")

Hi,

With current R devel and R 2.13.1:

aa=1:5
save(aa, file="aa.rda", compress="xy")

Error in identical(compress, "gzip") || compress :
?invalid 'y' type in 'x || y'

Thanks!
H.

sessionInfo()

R version 2.13.1 (2011-07-08)
Platform: x86_64-unknown-linux-gnu (64-bit)

locale:
?[1] LC_CTYPE=en_CA.UTF-8 ? ? ? LC_NUMERIC=C
?[3] LC_TIME=en_CA.UTF-8 ? ? ? ?LC_COLLATE=en_CA.UTF-8
?[5] LC_MONETARY=C ? ? ? ? ? ? ?LC_MESSAGES=en_CA.UTF-8
?[7] LC_PAPER=en_CA.UTF-8 ? ? ? LC_NAME=C
?[9] LC_ADDRESS=C ? ? ? ? ? ? ? LC_TELEPHONE=C
[11] LC_MEASUREMENT=en_CA.UTF-8 LC_IDENTIFICATION=C

attached base packages:
[1] stats ? ? graphics ?grDevices utils ? ? datasets ?methods ? base


--