Bash-like interface extensions for xonsh.

Enables additional Bash-like syntax while at the command prompt. For example, the !! syntax for running the previous command is now usable.

Note that these features are implemented as precommand events and these additions do not affect the xonsh language when run as script. That said, you might find them useful if you have strong muscle memory.

Warning: This xontrib may modify user command line input to implement its behavior. To see the modifications as they are applied (in unified diffformat), please set $XONSH_DEBUG to 2 or higher. The xontrib also adds commands: alias, export, unset, set, shopt, complete.