When in the tangling taerget a directory is specified, this is not
reflected in the comments in the tangled file when comments are set to
include links:

,----
|    * `link' The code block is wrapped in comments which contain
|      pointers back to the original Org file from which the code was
|      tangled.
`----

In the org file =prodMixStands.org=:

,----
| :PROPERTIES:
| :header-args+: :tangle ./R/update.cache.R
| :END:
| #+begin_src R 
| test
| #+end_src
`----

results in the file =update.cache.R= in a link to the file
=prodMixStands.org= and not =./../prodMixstands.org=:

,----
|  ## [[file:prodMixStands.org::*Begin][Begin:1]]
`----

This is particularly bad when using ess and developer mode to develop a
package.

Cheers,

Rainer

-- 
Rainer M. Krug
email: Rainer<at>krugs<dot>de
PGP: 0x0F52F982