Some applications will never get full screen support. Here's a workaround.
1. Install SIMBL, http://www.culater.net/software/SIMBL/SIMBL.php.
2. Install Maximizer, http://chpwn.com/apps/maximizer.html.
3. Optional, but recommended step. Maximizer breaks full screen in some applications that already support it. To add it on a per application-basis edit SIMBLTargetApplications key from '/Library/Application Support/SIMBL/Plugins/Maximizer.bundle/Contents/Info.plist' by appending entries like explained at http://code.google.com/p/simbl/wiki/Tutorial, no. 3.
Example for TextEdit.
Use the following applescript as a trigger with shortcut ⌃⌘F and scope per application(s) in Quicksilver (http://qsapp.com) or use a hotkey application, to enable/disable full screen mode.
<key>SIMBLTargetApplications</key> <array> <dict> <key>BundleIdentifier</key> <string>com.apple.TextEdit</string> <key>MaxBundleVersion</key> <string>*</string> <key>MinBundleVersion</key> <string>*</string> </dict> </array>
Lex adds: I haven't tested this one.
tell application "System Events" to tell (first process whose frontmost is true) delay 0.05 -- tweak it as necessary if front window exists then tell front window if value of attribute "AXFullScreen" then set value of attribute "AXFullScreen" to false else set value of attribute "AXFullScreen" to true end if end tell end if end tell
Mac OS X Hints