Call the standard commands about bish HOT 5 CLOSED

Hmm. I'll have to figure out a good way to handle that. After the regex line-end symbol '$', bish expects there to be a variable name. That's because interpolations in strings are currently handled by prefixing '$' as well. I will need to think on this one a bit.

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Yes, I also realized that there must be a variable.

Ok, I'll wait.

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@tdenniston Why not use these quotes `?

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@eg0r This should work now, for example:

text = "335";
@([[ $text =~ ^[0-9]+\$ ]]);
assert(success());

Seems to work as expected.

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Wonderful commit. Now you can make functions for type checking:

def is_integer(v) {
    @([[ $v =~ ^[0-9]+\$ ]]);
    return success();
}

if (is_integer("100")) {
    println("Yes!");
} else {
    println("No!");
}

# => "Yes!"

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