Return 1 when a file fails to load

init.zsh

@@ -53,8 +53,6 @@ autoload -Uz zmv
 
 # Source plugins defined in ~/.zshrc.
 for plugin in "$plugins[@]"; do
-  zstyle ":omz:plugin:$plugin" enable 'yes'
-
   if [[ ! -d "${0:h}/plugins/$plugin" ]]; then
     print "omz: no such plugin: $plugin" >&2
   fi
@@ -62,6 +60,10 @@ for plugin in "$plugins[@]"; do
   if [[ -f "${0:h}/plugins/$plugin/init.zsh" ]]; then
     source "${0:h}/plugins/$plugin/init.zsh"
   fi
+
+  if (( $? == 0 )); then
+    zstyle ":omz:plugin:$plugin" enable 'yes'
+  fi
 done
 unset plugin plugins