Re: Merging (only) subdirectories

> Another option could be completely splitting off the themes to
> their own branches (eg. using git-filter-branch), check them
> out in an separate workdir and use unionfs to get a combined/merged
> view of the working trees.
>
> So, you'd actually have to fully separate branches, checked out
> in their own worktrees/repos:
>
> a) mainapp (the main application)
> b) theme (the current theme you're working on)
>
> For testing/runtime, the webserver gets a union'ed tree,
> which just merges both namespaces (from host filesystems's, not
> git's view) together. Your actual development happens in the theme
> repo only.
>
>
> On actual deployment (if you're using git here, too), you can simply
> merge both branches together (will be just an passive - aka:
> merge-down-only - branch).