sperber(a)informatik.uni-tuebingen.de (Michael Sperber [Mr. Preprocessor]) writes: I am not saying it was impossible to find-out this information. I mean that currently in the source there is no reference to the package the file is in, i.e. the writer of the lisp source doesn't care about in which package we stick his file, he just uses locate-data-file. I interpret what you wrote as that you want a "package" argument passed to locate-data-*, which does need the lisp author to be aware. I think so. But it is more or less by accident.