It's pretty simple, but useful. I got sick of modifying the module skeleton (especially the moduleActionsTest.php file) and found an easy way to customise the skeleton files for my projects.
The change is very straight forward: if you have a ##PROJECT_DIR##/data/skeleton/module directory, then it uses that for the skeleton instead of ##PEAR_DIR##/data/symfony/skeleton/module.
To populate the custom skeleton: rsync ##PEAR_DIR##/data/symfony/skeleton/module ##PROJECT_DIR##/data/skeleton/.
Then customise the skeleton and symfony module app newmodule will generate the custom files instead of the vanilla symfony files.
I suppose you could add the same for app skeleton, but I haven't found that to be as useful, since the app skeleton has very little in it anyway.
