Heute die Zweite: parameterübergabe mit listentrennern

[suit]

anscheindend gibts noch mehr:

reserved      = ":" / "/" / "?" / "#" / "[" / "]" / "@"
                   "!" / "$" / "&" / "'" / "(" / ")"
                 / "*" / "+" / "," / ";" / "="

Jep, das hab ich gesucht (RFC 3986, Appendix A):

pct-encoded   = "%" HEXDIG HEXDIG

unreserved    = ALPHA / DIGIT / "-" / "." / "_" / "~"
   reserved      = gen-delims / sub-delims
   gen-delims    = ":" / "/" / "?" / "#" / "[" / "]" / "@"
   sub-delims    = "!" / "$" / "&" / "'" / "(" / ")"
                 / "*" / "+" / "," / ";" / "="