Janet Versions Save

• Add memcmp function to core library.
• Fix bug in os/open with :rw permissions not correct on Linux.
• Support config.mk for more easily configuring the Makefile.

• Windows FFI fixes
• Fix PEG if-not combinator with captures in the condition
• Fix bug with os/date with nil first argument
• Fix bug with net/accept on Linux that could leak file descriptors to sub-processes
• Reduce number of hash collisions from pointer hashing
• Add optional parameter to marshal to skip cycle checking code

• Fix FFI bug on Linux/Posix
• Improve parse error messages for bad delimiters.
• Add optional name parameter to the short-fn macro.

• Add FFI support to 64-bit windows compiled with MSVC
• Don't process shared object names passed to dlopen.
• Add better support for windows console in the default shell.c for auto-completion and other shell-like input features.
• Improve default error message from assert.
• Add the tabseq macro for simpler table comprehensions.
• Allow setting (dyn :task-id) in fibers to improve context in supervisor messages. Prior to this change, supervisor messages over threaded channels would be from ambiguous threads/fibers.

This release brings a number of new features that will make Janet useful in even more domains, including mutexes and reader-writer locks to the ev module to improve interactions with multi-threaded, native code, better named arguments support, and an experimental FFI module. Also a number of improvements and simplification to Janet's debugging capabilities have been made, and exposed with the new debugger function.

• Add experimental ffi/ module for interfacing with dynamic libraries and raw function pointers. Only available on 64 bit linux, mac, and bsd systems.
• Allow using &named in function prototypes for named arguments. This is a more ergonomic variant of &keys that isn't as redundant, more self documenting, and allows extension to things like default arguments.
• Add delay macro for lazy evaluate-and-save thunks.
• Remove pthread.h from janet.h for easier includes.
• Add debugger - an easy to use debugger function that just takes a fiber.
• dofile will now start a debugger on errors if the environment it is passed has :debug set.
• Add debugger-on-status function, which can be passed to run-context to start a debugger on abnormal fiber signals.
• Allow running scripts with the -d flag to use the built-in debugger on errors and breakpoints.
• Add mutexes (locks) and reader-writer locks to ev module for thread coordination.
• Add parse-all as a generalization of the parse function.
• Add os/cpu-count to get the number of available processors on a machine

• Prohibit negative size argument to table/new.
• Add module/value.
• Remove file/popen. Use os/spawn with the :pipe options instead.
• Fix bug in peg thru and to combinators.
• Fix printing issue in doc macro.
• Numerous updates to function docstrings
• Add defdyn aliases for various dynamic bindings used in core.
• Install janet.h symlink to make Janet native libraries and applications easier to build without jpm.

Patch release to fix some versioning issues in the previous 1.21.0 release. No new changes here.

• C functions janet_dobytes and janet_dostring will now enter the event loop if it is enabled.
• Fix hashing regression - hash of negative 0 must be the same as positive 0 since they are equal.
• The flycheck function no longer pollutes the module/cache
• Fix quasiquote bug in compiler
• Disallow use of cancel and resume on fibers scheduled or created with ev/go, as well as the root fiber.

Add :missing-symbol hook to compile that will act as a catch-all macro for undefined symbols.

• Add :redef dynamic binding that will allow users to redefine top-level bindings with late binding. This is intended for development use.
• Fix a bug with reading from a stream returned by os/open on Windows and Linux.
• Add :ppc64 as a detectable OS type.
• Add & more support for destructuring in the match macro.
• Add & more support for destructuring in all binding forms (def).