Currently, when a package is updated the corresponding layers that might have a .bbappend file also need to be updated. It would be beneficial if we could have a Regular expression of some kind in the .bbappend file name to allow for matching those updates with in a constrained set of possibilities. Clearly we can't use standard RE characters due to them being in a filename and it should be readable.
This would be a wildcard, not a regular expression. Richard has suggested the possibility of using % (as used in PREFERRED_VERSION).
http://git.yoctoproject.org/cgit/cgit.cgi/poky/commit/?id=381d5920188398bc53b2454843054c8690bca243
Verified on master branch. Commit ID: 005af45191ded6185c618c708181b31281e43092