[ESS] completion in [] (R internal completion fails)

Hello, 

I am forwarding this from ESS mailing list, as it's a failure of
internal R completion system:

This fails:

utils:::.assignLinebuffer('iris[iris$Spec')
utils:::.assignEnd(15)
utils:::.guessTokenFromLine()
utils:::.completeToken()
utils:::.retrieveCompletions() ## -> [1] "iris[iris$Spec"

This works

utils:::.assignLinebuffer('iris[ iris$Spec')  # note the space after [
utils:::.assignEnd(15)
utils:::.guessTokenFromLine()
utils:::.completeToken()
utils:::.retrieveCompletions() ## -> [1] "iris$Species"

Best, 
Vitalie.

Andreas Leha <andreas.leha at med.uni-goettingen.de>
on Wed, 14 Mar 2012 10:21:37 +0100 wrote:

>> Hi all,
  >> I am seeing strange behaviour with completion inside [].

  >> Suppose I have
  >> ttt <- data.frame(aaa=1, bbb=1)
  >> and I want to run
  >> ttt$aaa[ttt$aaa == 1] <- 2

  >> then completion at this point fails:
  >> ttt$aaa[ttt$aa<TAB>

  >> On the other hand, strangly enough, this works as expected:
  >> ttt$aaa[ ttt$aa<TAB>

  >> Regards,
  >> Andreas

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