Canonical path for /ssss/../../ ?

[Weijun Wang]

I've seen something weird on Linux:

  new File("/ssss/../").getCanonicalFile()' = /
  new File("/ssss/../../").getCanonicalFile()' = /..
  new File("/ssss/../../../").getCanonicalFile()' = /
  new File("/ssss/../../../../").getCanonicalFile()' = /..

and

  new File("/ssss/../..").getCanonicalFile().getCanonicalFile() = /

Is "/.." canonical? Shouldn't getCanonicalFile() be idempotent?

Thanks
Max