Even with length limit, it’s possible to post literally nothing in discourse.
- Is it possible to prevent it?
- Suppose that it can be prevented. Can the reply limit be decreased, e.g. to 1.
-edit-
Example below using single nonbreaking space.
There are a zillion ways to post spaces in unicode, this has been discussed before – the real solution is to have rules that prevent it, and enforce them via education, warnings, and suspensions.
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