[Feature request] Notify on shell status change

[victorniel]

You could make several type of notifications :

- when a command takes more than 10 seconds to execute then ends, display a popup (like this: http://mumak.net/undistract-me/). Very useful when you install, compile, scan, etc...
- when a command returns, with success, change the tab name to green if it doesn't have the focus. (this allow easy multitasking). The mac terminal does this.
- when a commande returns, with an error code, change the tab name to red and blink for a second. (same).

When you right click, you can choose an 'alert' option which let you enter a regex. If the regex appear on the shellouput, you get a notification (and an optionel ctrl + s).

[Emlyn Corrin (emlyn)]

Also notify when there is new output, even if a command has not returned (e.g. by bolding the tab name).
Useful if you have e.g. an IRC client open in one tab.