Merlin Mann recently posted 
about a nifty new full-screen word processor called WriteRoom, which by filling the whole screen removes many distractions and helps you to focus on the task at hand.
Very clever and most excellent for plain text work. But sometimes you need the textual grunt, coding smarts, snippets and features of an app like TextMate .
Help is to hand! On the TextMate mailing list , Martin Ström posted a note about a utility called Megazoomer , which can zoom many apps including TextMate to near-as-dammit full-screen mode. It requires the SIMBL plugin , also used by PithHelmet and other enhancement apps.
Intel Mac users might want to get a version which has been recompiled as a universal binary .
It adds a menu item to the Window menu. Click in when you are working in TextMate for the extra focus that full-screen mode provides. It doesn’t have the polish of WriteRoom’s layout but it does offer you the full power of TextMate’s features.
I used the Keyboard pref pane to set a global shortcut for
Zoom to cmd-ctrl-z ⌘⌃z (same as iTunes)
and Mega Zoom cmd-ctrl-opt-shift-Z ⌘⌃⌥⇧Z
Works like a dream from the keyboard.
Somehow it doesn’t work well with my TextMate, when i’m at fullscreen, TextMate doesn’t let me save anything. weird !