Hi All, In looking at the Java Docs, our Lucene team noticed that the `@` symbol is a reserved character in the Lucene regular expression syntax.
In re-visiting the page in curiosity, I found that the symbol was [Optional] for "any string." This came at a surprise because there's a very common way to achieve "any string" in `.*`. Is there any compelling reason to preserve this tiny vector of complexity? I suspect there may be some differences in the constructions of the finite automata produced by `.*` and `@` but I am not sure. If insignificant or non-existent, I suggest we remove `@` from the regular expression syntax. -- Marcus Eagan
