On the fly syntax checking for GNU Emacs
Flycheck 0.24, with many new syntax checkers and new options, and filtering for the errors. Release announcement
Flycheck 0.23, with a brand-new manual, new syntax checkers, and many improvements and bug fixes:
Flycheck 0.22, with generic syntax checkers, error IDs, a unit test library, and many refinements and fixes.
Flycheck 0.21, with new syntax checkers for Coq and RPM Spec, new options for C++ and shell scripts, and many refinements and fixes in the error list.
Flycheck 0.20, with support for Fortran and ADA, new syntax checkers for C/C++ and Scala, new options for C/C++, improved Rust support, and better key bindings in the error list.