Tag Archives: Submodule

How to update and deploy WordPress as a Git submodule

WordPress 3.8.2, a security release, came out yesterday. Now, if you’re already on WordPress 3.8, your WordPress installation will most likely automatically update, but if you are using Git to manage WordPress as a submodule, and have auto-update disabled, you have to do that manually.

That said, it’s still super easy to do. It definitely outweighs not having a version control system.

Let’s look at the Git commands required to update WordPress from 3.8.1 to 3.8.2. Note that this will work for updating any version.

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Git error when switching branch after replacing directory with submodule

I’m working on updating several WordPress sites. Part of each site’s update includes converting the WordPress core and all frequently used plugins to Git submodules. While many recommend staying away from submodules all together, I’ve been using them for a while now and never had any issues, that is, until today. Luckily, it’s nothing severe, and in my case, pretty straight forward to fix (once you know the solution), but because the error didn’t make any sense, I’ve decided to document it here.

The main problem is that I’m unable to checkout the master branch after adding the submodules on the develop branch. Git complains with the following error:

error: The following untracked working tree files would be overwritten by checkout

That said, let’s look at the problem in detail and how we can solve it.

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