Fix problem with filenames missing normalization

data/core/common.lua

@@ -206,7 +206,9 @@ end
 function common.home_encode(text)
   if HOME and string.find(text, HOME, 1, true) == 1 then
     local dir_pos = #HOME + 1
-    if string.find(text, PATHSEP, dir_pos, true) == dir_pos then
+    -- ensure we don't replace if the text is just "$HOME" or "$HOME/" so
+    -- it must have a "/" following the $HOME and some characters following.
+    if string.find(text, PATHSEP, dir_pos, true) == dir_pos and #text > dir_pos then
       return "~" .. text:sub(dir_pos)
     end
   end