" Make sure xa0 (alt + space) is automatically changed to a normal whitespace
" if pressed accidentally while in insert mode (happens on Mac when alt
-" doesn't send escape).
-if has('mac')
+" doesn't send escape). filereadable() is necessary for Leopard were 'mac' is
+" no longer set on the console.
+if has('mac') || filereadable('/Users/.localized')
imap <Char-0xa0> <Space>
endif