Recently I needed to do some text pattern matching in an XML XPath query, and XPath's built-in sub-string matching capabilities were not good enough. While XPath 2.0 defines regular expression matching capabilities, it is still not widely implemented and in most available tools there is no easy way to do complex pattern matching on XML [...] 0

This is from the top of sqlite3.h, the header file for the SQLite3 library - most source file would have a copyright notice here referring people to read their license, but since SQLite is public domain, the author decided to put this instead: ** The author disclaims copyright to this source code. In place [...] 1