In Terminal, how to exit the two fingers history scrolling mode

The approach given here looks a little simpler—maybe it would work for you?

If you don't want to remember to type "quit" instead of "exit", and you're using bash, just add the following to your .bashrc or other shell startup script:

trap '/usr/bin/osascript -e "tell application \"terminal\" to quit"' 0

What's it do? When the shell receives signal 0 (zero), that is, told to exit, it will execute this command as the last thing it does. This allows your shell, etc, to exit gracefully, and asking Terminal.app to exit via applescript makes sure it does the same. In other words, type 'exit', and your shell exits, then Terminal quits, all cleanly and the way nature intended.

The full thread can be found here.

To use a mouse wheel or trackpad to scroll in Terminal.app you'll need to install MouseTerm. After installing MouseTerm you'll need to add set mouse=nicr to your .vimrc file:

echo "set mouse=nicr" >> ~/.vimrc

If you're still not able to scroll in elinks it's possible that it wasn't compiled with GPM (General Purpose Mouse) support. Since elinks isn't a native application to OS X you probably installed through MacPorts or Homebrew. I'd open the "formula" file for elinks /usr/local/Library/Formula/elinks.rb (by default for Homebrew) and verify that --without-gpm isn't anywhere to be found.

Though your question states you want to do this in Terminal.app I'd recommend taking a look at iTerm2 which supports this natively, and has quite a bit more to offer then the stock Terminal app.