Please find attached jumprel, a tool to find/create related files. This
tool has been described (and compared with `find-file.el' and
`find-sibling-file') in emacs-devel's thread "Comparison of tools to
search for related files".

You will find a few files attached to this email:

- jumprel.el: The core of the library. This is where you will find an
  introductory documentation.
- tests/jumprel-test.el: Corresponding tests.

- jumprel-recipe.el: Support for recipe-based jumpers. This makes it
  easy to define powerful jumpers.
- tests/jumprel-recipe-test.el: Corresponding tests.

- jumprel-regexp.el: A proof-of-concept way to define regexp-based
  jumpers. This files provides the same kind of support as
  `find-sibling-file' and `find-file.el'. This file is heavily based on
  previous work from Lars Ingebrigtsen <larsi@gnus.org> and others.

- 0001-.dir-locals.el-Configure-jumprel-jumpers.patch: A patch for
  Emacs' .dir-locals.el making use of jumprel for .el and .c/.h files.

Because there are already 2 mechanisms to find related files in Emacs
(see above-mentioned thread), I think we should only consider
integrating jumprel into Emacs core if the other 2 are somewhat
deprecated (find-sibling-file hasn't been part of any release yet).

Even if you don't want to include this package in Emacs core, I would
really welcome feedback.

-- 
Damien Cassou

"Success is the ability to go from one failure to another without
losing enthusiasm." --Winston Churchill