FreeMarker

This release contains an important bugfix in the
JSP taglib support and a few other minor bugfixes.
It also contains frequently requested new
features, such as URL escaping, a "seq_contains"
built-in operator, and a "attempt"/"recover"
directive pair. Other new features include
improved "sort"/"sort_by" and
"left_pad"/"right_pad" built-in operators.

This release introduces numerous new features and quality improvements compared to the 2.2.x series. The most notable improvements are the ability to define functions (methods) in templates, the ability to interpolate variables in string literals, support for a variable number of macro parameters, and a more intelligent default object wrapper. Also, a totally redesigned XML wrapper was added, with much better "XML transforming" capabilities than its predecessor.

The most notable improvements in this version are the ability
to define functions (methods) in templates, the ability to
interpolate variables in string literals, the support for a
variable number of macro parameters, and the more
intelligent default object wrapper. It also offers powerful new
features for processing and transforming XML documents
making it a viable alternative to XSLT.

A debugging API has been included in the freemarker.debug package. This
is only of interest to Java programmers inspired to write debugging
frontends. Various improvements to error messages have been made, and
other minor bugfixes.

A significant bug was fixed. This bug caused the
template caching code to throw null pointer
exceptions under high load situations.