This is a cool feature I saw on a Mac terminal.

When the window of a gnome-terminal is small (say, 80x25) and some program produces some output, lines longer than 80 characters will be wrapped. Now, if one starts enlarging the window, the wrapped lines should start to unwrap. Currently they stay wrapped as they were before enlarging the window, so the output looks broken or at least ugly.

Use case: John starts a terminal, which opens at a size of 80x25 characters. He types "ls -l" and finds that the window is far too small for the output, as many lines have been wrapped. In order to unwrap the lines he maximizes the terminal window, but sadly all the lines stay wrapped. John has to retype the command in order to take advantyge of the additional space.