Contextual filter with multiple values with plus sign in the value

We have a view setup with contextual filter which accepts multiple arguments separated by plus (+) sign and it works great. However, if the argument itself has a plus (+) sign in it, it doesn't work. Is there a way to escape it? For example, if the contextual filter argument were "test+test1+test2" it returns all nodes with those related arguments. However, if the argument value was "test0+" and we do "test0++test+test1+test2" it changes it to = instead of IN for the WHERE clause.

Thanks in advance!