((string-match "\\`w32-" (symbol-name symbol))
(eq system-type 'windows-nt))
((string-match "\\`mac-" (symbol-name symbol))
- (eq window-system 'mac))
+ (featurep 'mac-carbon))
((string-match "\\`x-.*gtk" (symbol-name symbol))
(featurep 'gtk))
((string-match "\\`x-" (symbol-name symbol))