Main new feature:

• Agda backend: generates bindings to output of Haskell backend

Backend-independent features:

• GHC 8.8 compatibility
• Stack installation supported by provided .yaml files [#198]
• Unicode support in lexer, excl. C, C++ and Ocaml [#249]
• LBNF: support \r (carriage return) and \f (form feed) in token declaration [#257]
• LBNF: allow numbered categories (like Foo2) independent of coercions [#210]

C backend:

• supports now the -l option to give error locations [#238]
• correct function names in generated skeletons [#239]
• handle regular expression difference (subtraction) correctly [#237]

Haskell backend:

• generates now more fine-grained Makefile that invokes bnfc on changed .cf file
• uses qualified import of AST in generated printer [fixes #128,#228]
• printer code no longer produces deprecation warning concerning OverlappingInstances [#233]
• --cnf: fixed problem with Any type in generated code [#216]
• --cnf: generated test program now same name (Test) as without --cnf
• --glr: correct module header in .y file [#252]

Binaries (see below):

• bnfc-2.8.3-mac.binary: Binary compiled under Mac OS X Mojave, x86 64bit processor
• bnfc.exe: Binary compiled under Windows 10, x86 64bit processor

Main new feature:

• Java: An experimental ANTLR4 backend [#155]

Backend-independent features:

• GHC 8.4 compatibility [#227,#236]
• bnfc now puts current timestamp on all created files, even unchanged ones [#219]
• bnfc is now more accepting about border-line terminals [#149]
• Improved error messages [#144] in particular on undefined categories [#151]

C and C++ backends:

• C: Emit correct function prototypes [#185]
• C++: Fix buffer overrun in pretty printer [#242]
• C++: Fix regression introduced in 2.8 in Skeleton.H [#164]
• C++: Replace %name-prefix with %define api.prefix in bison files [#181]
• C++: Fix a bug that appeared if you had a category named "List"
• C, C++: Add usage output to the test program [#141]
• C, C++: Fix a bug in the parser file when using -p [#172]
• C, C++, OCaml, Java: Accept ' or " as comment delimiters [#146]

Haskell backend:

• Generated code mostly hlint-warning free
• Small fixes [#166,#170,#222]

Other backends:

• Java: Add support for passing line numbers to parser [#217,#224,#226]
• OCaml: Reserved symbols now have a higher precedence than predefined tokens as in Haskell

Further:

• Some updates of the documentation [#211,#223]
• And various small fixes [#139,#159,#195,#201,#215]

Thanks to the many contributers to this version!

• Fix compatibility with GHC 7.10.2 and Alex 3.14

• Builds with ghc 7.10.1
• Add support for JFlex (java)
• Add an option to generate files in an other directory
• Add an experimental option that turns the AST into a parametrized
  functor (in Haskell only)
• New pygment backend to generate syntax highlighters
• Bug fixes

• Generated haskell code is now warning free
• Removed unused terminal in happy
• Correctly escape backslashes in symbols
• Fix problem that was preventing custom tokens to work in OCaml if they conflict with the build-in Ident
• BNFC build is also warning free (ghc 7.4.2)
• Test programs return non-zerro exit code on parse error

• Fix problem with the latest version of alex

• Add token support for Ocaml
• New option parser
• Adds an optional argument to change Makefile name
• Add a –ghc option to derive Data, Typeable, Generic in Haskell
• New online documentation (https://bnfc.readthedocs.org)
• Derive Read for newtype decls in Haskell
• New option to get the version number –version
• Remove the F# backend
• Remove the Java4 backend
• New Applicative and Alternative instances to Err
• Remove the coupling between building the parser and the pdf from latex
• Improvement to the CNF Backend
• Bug fixes #92, #21, #34, #33, #90, #30, #60