1 files changed, 7 insertions, 3 deletions
diff --git a/vim/autoload/xdg.vim b/vim/autoload/xdg.vim
index 14aa3055..2b1e7c56 100644
--- a/vim/autoload/xdg.vim
+++ b/vim/autoload/xdg.vim
@@ -11,9 +11,13 @@ let s:subdir = 'vim'
 
 function! s:Get(name) abort
   let name = a:name
-  let env = environ()
-  if has_key(env, name) && strlen(env[name]) > 0
-    return env[name]
+  if name !~# '^[A-Z][A-Z0-9_]*$'
+    throw 'Illegal env var name'
+  endif
+  let value = ''
+  execute 'let value = $'.name
+  if value !=# ''
+    return value
   elseif has_key(s:defaults, name)
     return s:defaults[name]
   else