In my opinion, the full screen of the app pages is well implemented. It is almost like write room. Is it possible to have a similar implementation of the Lion full screen in Textmate?

It's possible to hack full-screen functionality into 1.5:

in Terminal type:

plutil -convert xml1 /Applications/Textmate.app/Contents/Resources/English.lproj/Document.nib mate /Applications/Textmate.app/Contents/Resources/English.lproj/Document.nib

Search for 'NSWindowBacking' key/value pair and after these entries, insert the following:

<key>NSWindowCollectionBehavior</key> <integer>128</integer>

Quit TextMate, and in terminal type:

plutil -convert binary1 /Applications/Textmate.app/Contents/Resources/English.lproj/Document.nib

I'm still working out if this is a good idea or not.

Andy.