Don't modify all the references

[privefl]

If many names point to the same object, they will be all modified, which is not the default behaviour of base R.

(X <- runif(4))
X2 <- X

X %*<-% 2
X
X2

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I wanted to use something like x[1] <- x[1] + 0L to make a copy of x if multiple names referred to the same objects in memory so that the other are not modified.
Yet, in RStudio, there are references (due to the object explorer?) so that I would make copies all the time.

See https://community.rstudio.com/t/in-place-modification-doesnt-work-in-rstudio/9407?u=privefl.