When using the Monaco font with anti-aliasing disabled the bottom of some characters, such as '[', are not visible. I didn't have this problem with 22.3. Here's a snippet of my .emacs file that should exhibit the problem. ;; turn off anti-aliasing (setq mac-allow-anti-aliasing nil) ;; xcode font (set-face-attribute 'default nil :family "monaco" :height 95) In GNU Emacs 23.1.1 (i386-apple-darwin9.7.0, NS apple-appkit-949.46) of 2009-07-30 on bluesilver.local Windowing system distributor `Apple', version 10.3.949 configured using `configure '--with-ns'' Important settings: value of $LC_ALL: nil value of $LC_COLLATE: nil value of $LC_CTYPE: nil value of $LC_MESSAGES: nil value of $LC_MONETARY: nil value of $LC_NUMERIC: nil value of $LC_TIME: nil value of $LANG: nil value of $XMODIFIERS: nil locale-coding-system: nil default-enable-multibyte-characters: t Major mode: Lisp Minor modes in effect: shell-dirtrack-mode: t tooltip-mode: t mouse-wheel-mode: t file-name-shadow-mode: t global-font-lock-mode: t font-lock-mode: t global-auto-composition-mode: t auto-composition-mode: t auto-encryption-mode: t auto-compression-mode: t line-number-mode: t Recent input: C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-e C-b C-b 3 C-e C-x C-e C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-n C-a C-d C-e C-x C-e C-a C-x C-s ; C-x C-s C-n C-p C-k C-z C-l C-n C-n C-n C-p C-p C-p C-n C-n C-n C-n C-n C-e C-b C-b 3 2 1 C-e C-b C-b C-f C-b C-d 0 C-x C-s C-e C-x C-e C-b C-b 2 C-e C-x C-e ] C-b C-b 3 C-e C-b C-b 1 C-e C-x C-e ] C-b C-b C-f 0 0 C-e C-x C-e ] C-b C-e C-a C-e ] C-b 9 0 C-e C-x C-e ] C-b 1 0 0 C-e 9 1 _ ) C-x C-e C-x e C-b 8 0 C-e C-x C-e C-b 5 C-e C-x C-e ] C-x C-s C-a C-e C-x b C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-x b C-b 9 0 C-e C-x C-e C-b 1 C-e C-x C-e C-b 2 C-e C-x C-e C-b 4 C-e C-x C-e C-b 5 C-e C-x C-e ] C-x C-s C-a C-e [ ] ] [ ] C-x C-s C-a M-x e r w b u g r e p o r t - e m a c s - b u Recent messages: kmacro-call-macro: No kbd macro has been defined nil [2 times] Saving file /Users/anthonythibault/.emacs.d/init.el... Wrote /Users/anthonythibault/.emacs.d/init.el nil [5 times] Saving file /Users/anthonythibault/.emacs.d/init.el... Wrote /Users/anthonythibault/.emacs.d/init.el Saving file /Users/anthonythibault/.emacs.d/init.el... Wrote /Users/anthonythibault/.emacs.d/init.el Making completion list...