Some shells seem to have a feature where a long command is compressed and partially hidden. For instance the following command:
$ echo this is a really long command line that goes on and on and on and on
Might be displayed as:
$ y long command line that goes on and on and on and on <
Depending on how long the prompt is and how wide the terminal is. Anyway, my question is what is this feature called and how do I turn it off?