squash! Further changes to enable zsh configuration splitting

* Add back missing EDITOR and VISUAL variables: these aliases were lost
  when reconciling changes from #426's changes to `zshrc`.

* Move aliases setup to occur after loading other config, as some of our
  aliases depend on environment variables having been set, so alias
  loading must come last after we've sourced `zsh/configs`.

* Move autocompletion for `g` function from the function definition to
  to `zsh/completions/_g`

* Move `PATH` setup to `zsh/configs/post` to ensure it happens after
  other configuration that might alter the `PATH`

zsh/completion/_g

@@ -0,0 +1,2 @@
+#compdef g
+compdef g=git

zsh/configs/editor.zsh

@@ -0,0 +1,2 @@
+export VISUAL=vim
+export EDITOR=$VISUAL

zsh/configs/post/path.zsh

@@ -0,0 +1,10 @@
+# ensure dotfiles bin directory is loaded first
+export PATH="$HOME/.bin:/usr/local/sbin:$PATH"
+
+# load rbenv if available
+if command -v rbenv >/dev/null; then
+  eval "$(rbenv init - --no-rehash)"
+fi
+
+# mkdir .git/safe in the root of repositories you trust
+export PATH=".git/safe/../../bin:$PATH"

zsh/functions/g

@@ -7,6 +7,3 @@ g() {
     git status
   fi
 }
-
-# Complete g like git
-compdef g=git

zshrc

@@ -3,9 +3,6 @@ for function in ~/.zsh/functions/*; do
   source $function
 done
 
-# aliases
-[[ -f ~/.aliases ]] && source ~/.aliases
-
 # extra files in ~/.zsh/configs/pre , ~/.zsh/configs , and ~/.zsh/configs/post
 # these are loaded first, second, and third, respectively.
 _load_settings() {
@@ -42,5 +39,8 @@ _load_settings() {
 }
 _load_settings "$HOME/.zsh/configs"
 
+# aliases
+[[ -f ~/.aliases ]] && source ~/.aliases
+
 # Local config
 [[ -f ~/.zshrc.local ]] && source ~/.zshrc.local