Bug in R 3.6.1: When file.copy deletes your file !

A <- 10
save(A, file="A.Rdata")
file.symlink(from="A.Rdata", to="B.Rdata")
rm(A)

load(file="B.Rdata")
print(A)

system("ls -l")

file.copy(from="A.Rdata", to="B.Rdata", overwrite = TRUE)
# A.Rdata becomes empty: 0B

system("ls -l")

# In terminal
marcgirondot$ ls
A.Rdata
marcgirondot$ ln -s A.Rdata B.Rdata
marcgirondot$ ls -l
-rw-r--r--  1 marcgirondot  staff      70 13 sep 11:38 A.Rdata
lrwxr-xr-x  1 marcgirondot  staff       7 13 sep 11:38 B.Rdata -> A.Rdata
marcgirondot$ cp A.Rdata B.Rdata
cp: B.Rdata and A.Rdata are identical (not copied).

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