(eq system-type 'ms-dos))
((string-match "\\`w32-" (symbol-name symbol))
(eq system-type 'windows-nt))
- ((string-match "\\`mac-" (symbol-name symbol))
- (eq window-system 'mac))
+ ((string-match "\\`mac-" (symbol-name symbol))
+ (or (eq system-type 'mac) (eq system-type 'darwin)))
((string-match "\\`x-.*gtk" (symbol-name symbol))
- (or (boundp 'gtk)
- (and window-system
- (not (eq window-system 'pc))
- (not (eq window-system 'mac))
- (not (eq system-type 'windows-nt)))))
+ (featurep 'gtk))
((string-match "\\`x-" (symbol-name symbol))
(fboundp 'x-create-frame))
((string-match "selection" (symbol-name symbol))