[dir-spec.txt](https://gitweb.torproject.org/torspec.git/tree/dir-spec.txt) defines a protocol name as a Keyword, and strictly limits what character set is allowed in a Keyword: ``` Keyword = KeywordChar+ KeywordChar ::= 'A' ... 'Z' | 'a' ... 'z' | '0' ... '9' | '-' ``` But `"Foo_Bar=1"`, `",,,=1"`, and arbitrary Unicode strings like `"Risqu\u00e9=1"` are accepted. Bytes that aren't even valid Unicode like `"\xc1=1"` are also fine, as long as no bytes are the null byte, `=`, or the space character. **Trac**: **Username**: cyberpunks