NEWS

Thrax - Release 0.1

(Alpha version.)

Thrax - Release 1.0

* Removed dependency on ICU for UTF8 string parsing: --with-icu configuration
  flag no longer needed and OpenFst library version 1.3.1 or above is required.
* Function definitions may now be interleaved with the rest of the body in grammars.
* Support for standard (tropical), log and log64 arc types (flag --arc_type).
* --save_symbols flag to thraxcompiler allows for symbol tables to be stored in the compiled fsts.
  thraxmakedep supports --arc_type and --save_symbols flags.
* StringFile function now supports construction of both acceptors and
  transducers. Strings may be compiled in byte or utf8 mode, or with a
  user-specified symbol table.
* The --rule flag to thraxrewrite-tester is now --rules. Supports a
  comma-separated list of rule names, which are to applied in sequence to the
  input.
* Project added as callable function.
* Various optimizations to CDRewrite and elsewhere.
* Fixed bug in how symbol tables are saved (1.0.1)
* Fixed bug in treatment of symbol tables with StringFile
* Adopted SET_FLAGS for better presentation of flag options

Thrax - Release 1.1

* Added interface to pushdown transducer (PDT) functionality from OpenFst.
* Added support for morphological paradigms and linguistic features.
* Added assertion capability to allow for self-testing grammars.
* Added readline support to thraxrewrite-tester to allow for inline editing and saving
  of histories.
* Added thraxrandom-generator to allow one to generate random strings from a
  grammar.
* Added more useful debug information --- grammar file name and line number ---
  to allow more one to find bugs in the grammar more easily.
* Generated labels are now output in readable form by thraxrewrite-tester and
  thraxrandom-generator.
* Generated labels (enclosed in "[]") may no longer be single-character.
* Allow ASSERT_EQUAL declarations in the grammar.

Thrax - Release 1.2

* Added interface to multi-pushdown transducer (MPDT) functionality from OpenFst.
* Added interface to Replace class in OpenFst.
* Adds --show_details flag to thraxrewrite-tester. When it is set and when
  multiple rules  are specified, the tool will show the output of each
  individual rule. Useful when trying to find which rule caused a problem.
* Raises a warning if more than one definition is given for a function.

Thrax - Release 1.2.1
* AssertNull and AssertEmpty assertions added.
* Minor fixes to use fully qualified names for std:: objects.
* Rearrangement of the main compiler to have separate C++ files for each arc type.
* Fixes potential bug in Replace implementation.
* Algorithmic improvements to Optimize.

Thrax - Release 1.2.2

* Compatibility release for OpenFst 1.5.2.

Thrax - Release 1.2.3

* Properly adds AssertEmpty, AssertEqual and RmWeight functions.
* Adds fix suggested by Damir Cavar to allow for compilation under Cygwin.

Thrax - Release 1.2.4

* Makes "#" a comment character for StringFiles: anything from "#" to the end of
  the line is now a comment. If you want a real "#", escape it with "\".
* Adds a RuleCascade to the library to make it easier to deal with the common
  construct of a cascade of rules. (Only relevant if you develop code using the
  Thrax libraries.)
* Better error reporting for "cannot parse character" error.
* Adds ":" as a bash-friendly alternative to "$" when specifying a
  (M)PDT/parens(/assignments) combination.

Thrax - Release 1.2.5

* Better use of finalization in the implementation of built-in methods.
* Cleanup to string parsing.

Thrax - Release 1.2.6

* Adds an optional third column to stringfiles to represent weights.
* Adds implementation of lenient composition.
* Fixes some header issues that have popped up in recent versions of Debian.

Thrax - Release 1.2.7

 * Adds some more useful debugging errors (e.g. when user tries to
   reuse a namespace designator)

Thrax - Release 1.2.8

 * Improved integration of boundary symbols in CDRewrite

Thrax - Release 1.2.9

 * Improved implementation of the cross-product (colon) operator
 * Removes unused Connect built-in