- Timing: The shell should record how long each command takes. It should be able to show the start and stop times and durations of commands I have run in the past.
- Finish notifications: When a long-running command finishes, the task bar icon for the shell's terminal window should flash, just as instant messaging programs flash their task bar icon when you receive a message. If the terminal window is tabbed, the tab should be highlighted too.
The second feature requires some integration between the shell and the terminal. This could be done via some new terminal escape sequence or perhaps using the WINDOWID environment variable that gnome-terminal appears to pass to its subprocesses. But actually, I would prefer if the shell provided its own terminal window. There would be more scope for combining GUI and CLI features that way, such as displaying filename completions or (more usefully) command history in a pop-up window.
I have seen a couple of attempts to do that. Hotwire is one, but it is too different from Bash for my tastes. I would like a GUI shell that initially looks and can be used just like gnome-terminal + Bash. Gsh is closer to what I have in mind, but it is quite old, written in Tcl/Tk and C, and not complete.