Version controlling my home directory

I recently rearranged my home directories on my work machines and decided it was time to finally get my configuration under a proper version control. I found several blogs about this, but one was particularly useful. I've changed it a little, but here's the basic set up.

$ mkdir ~/.config.git
$ cd ~/.config.git
$ git init --bare
$ git config core.worktree ../

Now I have a git repository called ~/.config.git, but it needs special environment variables set so that accidentally calling git outside a normal repository won't trigger it to do things to my config repo. The next step is to make it easier to use this repo. I wrote the following to ~/bin/git-home:

#!/bin/bash
export GIT_DIR=$HOME/.config.git
export GIT_WORK_TREE=$HOME
git "$@"

Now calling "git home ..." explicitly sets the repository to my config repo. But this still isn't so convenient. So I added the following to my (now version-controlled) .bashrc file, at a point after completions are loaded:

alias hgit='git home'
complete -o bashdefault -o default -o nospace -F _git hgit 2>/dev/null \
        || complete -o default -o nospace -F _git hgit

This sets up hgit with completions. Finally, I don't want hgit status to show tons of untracked files. So I added the following ~/.config.git/info/exclude:

[^.]*
!.*/*
*~

Beneath that is a list of specific exclusions, which I'll keep expanding as I discover files and directories I don't want to track.