[Rd] dump function and compatibility of .RData files between versions 2.4/2.5 and lower (PR#9676)

From: <frederic.gosselin_at_cemagref.fr>
Date: Fri, 11 May 2007 14:15:48 +0200 (CEST)

Full_Name: frédéric Gosselin
Version: 2.5 & 2.2.1
OS: windows XP pro
Submission from: (NULL) (

(i) I cannot read .Rdata saved with R2.5 with R2.2.1. I think it was the same
with R2.4 vs R2.2.1.

(ii) I have found the strange following problem, using the dump function:

in the text.txt file, there are a lot of "L" added at the end of numbers, particularly in the .Dim attributes. This makes the file undreadable (at least in R2.2.1 but alos probably in S-Plus...)

I do not know in which respect both potential bugs are related.

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