Determine the location of the actual R-file

Dear community,

this time my question has something to do with with spatial context but not in the sense we discuss it usually here. I tried to find out if it is possible to ask R for the location (path) of the R-file from which I send the code.

If you've a question which isn't to do with the usual R-sig-geo
spatial context, then it's probably better asked on the R-help mailing
list. I recall a similar question on there a few weeks back, where the
user was running R from a script or a batch file or something, and you
could get the path to the script from the command arguments. I can't
recall the details, you'll have to search the archives!

Barry