Revamped zsh attachment. Removed superfluous code.

Now uses zsh build in completion.
Chose not to use zsh built in VCS info to keep env var support.
Lots of advice found at: https://git-scm.com/book/sv/v2/Appendix-A%3A-Git-in-Other-Environments-Git-in-Zsh

.git-bash-for-mac-zsh.sh

@@ -1,7 +1,6 @@
 #!/bin/zsh
 
-autoload -U compinit && compinit
-zstyle ':completion:*:*:git:*' ~/.git-completion.bash ~/.git-completion.zsh
+autoload -Uz compinit && compinit
 source ~/.git-prompt.sh
 
 autoload -U colors && colors

install.sh

@@ -4,7 +4,6 @@ set -e
 curl -o ~/.git-bash-for-mac.sh https://raw.githubusercontent.com/fabriziocucci/git-bash-for-mac/master/.git-bash-for-mac.sh
 curl -o ~/.git-bash-for-mac-zsh.sh https://raw.githubusercontent.com/ondkloss/git-bash-for-mac/master/.git-bash-for-mac-zsh.sh
 curl -o ~/.git-completion.bash https://raw.githubusercontent.com/git/git/master/contrib/completion/git-completion.bash
-curl -o ~/.git-completion.zsh https://raw.githubusercontent.com/git/git/master/contrib/completion/git-completion.zsh
 curl -o ~/.git-prompt.sh https://raw.githubusercontent.com/git/git/master/contrib/completion/git-prompt.sh
 
 touch ~/.bash_profile
@@ -15,5 +14,4 @@ echo "source ~/.git-bash-for-mac.sh" >> ~/.bash_profile
 touch ~/.zshrc
 # Add newline at the end of the '.zshrc' if it doesn't exist
 sed -i '' '$a\' ~/.zshrc
-echo "setopt PROMPT_SUBST" >> ~/.zshrc
 echo "source ~/.git-bash-for-mac-zsh.sh" >> ~/.zshrc

uninstall.sh

@@ -3,7 +3,6 @@
 rm ~/.git-bash-for-mac.sh
 rm ~/.git-bash-for-mac-zsh.sh
 rm ~/.git-completion.bash
-rm ~/.git-completion.zsh
 rm ~/.git-prompt.sh
 
 sed -i.backup '/source ~\/.git-bash-for-mac.sh/d' ~/.bash_profile