Argument Functions

Here is an example showing what this feature does:

$ echo $$func_name
func_return_value

Argument functions allow you to run functions when typing commands and using their return value as the resulting argument. Here is an example of a config file that defines one that allows you to insert random numbers into your commands:

import random

def rand_100():
   return random.randrange(100)

arg_funcs = {
   'rand': rand_100,
}

Now, when you type in a command, $$rand will be replaced with a random number from 0 to 99:

$ echo $$rand
4
$ echo $$rand
98
$ echo $$rand
45

There are so many things you can do with this, like making temporary files and passing its name as the argument, or passing the current time as an argument.