のざわです。質問には回答できませんが、純粋に興味から質問を。 > 楠根です。 > @ が使えるというのも実はそういう点からの要請で、実は別に @ が > 使えなくても、独立に近い名前空間が複数持てればそれでいいんです。 > @ が使えるなら mail address をそのまま使えばいいんで楽かなーと。 この要請について詳しく教えてください。というのも http://www.imasy.or.jp/archives/rfc/rfc2396.txt 2.2. Reserved Characters Many URI include components consisting of or delimited by, certain special characters. These characters are called "reserved", since their usage within the URI component is limited to their reserved purpose. If the data for a URI component would conflict with the reserved purpose, then the conflicting data must be escaped before forming the URI. reserved = ";" | "/" | "?" | ":" | "@" | "&" | "=" | "+" | "$" | "," : : とあり、それを敢えて @ を含めた方式を取る(たぶん @ を _at_ と、書き換え ればいいのかもしれません)のはなぜという理由が知りたいのです。例えば username _at_ host.domain という元アドレスから、このアドレス自体をユーザー名として username _at_ host.domain@virtual.newdomain などとしたいということでしょうか?
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