Finally more tools are starting to use this convention. I first saw its use in the Ant build framework. I even mentioned it to some Linux nerd on how to improve his utility and got an angry rebuff. Oh well.
* The patterns in .gitignore and .gitattributes files can have **/, as a pattern that matches 0 or more levels of subdirectory. E.g. “foo/**/bar” matches “bar” in “foo” itself or in a subdirectory of “foo”.