The {0}, {1}… notation indicates a parameter added later by arara, for example.
- I like to drink {0}
If arara adds water, the sentence becomes
- I like to drink water
If the message has no parameters, you can use ' (single quotes) normally, for example
- I don't like water
Now, if the message has a parameter, you have to escape the single quote by doubling it, that is, add two single quotes together
- I don''t like {0}