Fixed some regressions from 0.11.2:

• io.isfile and io.isdir erroring on non-existent paths
• io.copy erroring when the destination doesn't exist

Compiler:

• Fixed extends not inheriting __index, __mindex, __newindex
• Fixed lexer looping infinitely on a self-referencing alias

Runtime:

• Fixed in for substring checking not being binary safe
• Fixed table.slice crashing when producing a big slice
• Fixed exportvar's handling of non-finite numbers
• Fixed bigint addition when operands are a mix of positive and negative
• Fixed memory leaks under some rare conditions

You can view the full commit log here.

• Improved implicit-global coverage for multiple assignments within the same statement
• Fixed preprocessor aliases not taking multi-token arguments (e.g. function calls)
• Fixed compile-time concatenation shadowing optional parentheses
• Fixed extends not inheriting __pairs

Standard Library:

• socket.bind now returns the created coroutine and errors are raised to the caller instead of the scheduler
• Fixed socket.listen/socket.bind not failing for bound TCP ports on Windows
• Fixed os.sleep(1) taking considerably longer than 1ms on Windows
• Fixed scheduler:run yielding after the final tick
• Fixed dumpvar and exportvar's quoted strings not escaping bytes that would make it invalid UTF-8
• Fixed filesystem errors on Windows not being UTF-8 encoded when the user has a non-English locale

You can view the full commit log here.

• Added preprocessor aliases ($alias)
• Added compile-time evaluated statement $assert
• Added warning for unused local variables
• Added octal numerals
• Added __mindex metamethod
  • This is now used by default table metatable, elimiting the compatibility concerns it previously had.
• Export is no longer deprecated but now implies constness
• Walrus operator can now initialize multiple variables
• Compile-time conditionals can now be equality checks
• Table freezing is now an optional feature, enabled via PLUTO_ENABLE_TABLE_FREEZING
• Fixed implicit conversion of booleans to strings outside of concats
• Removed table length cache
• Removed let & const

Standard library:

• Added buffer library
• Added table.invert, table.dedup/deduplicate, table.deduped/deduplicated, table.values
• Added crypto.crc32c
• crypto.random now treats 1-2 arguments like math.random
• Added optional 'binary' parameter to crypto.md5
• Added ffi.alloc, ffi.write, & ffi.read
• Added UDP support to socket.connect
• Added socket.isudp, socket.udpserver
• Added io.chmod
• Added os.arch constant
• Added callonce function
• Added sdiv, udiv, smod, & umod functions
• string.split's needle parameter is now required (previously defaulted to ",")
• socket.listen & socket.bind can now be bound to a specific IP address
• io.part now returns 'parent, name' if part argument is omitted
• Optimized json.encode & json.decode
• Removed _PSOUP constant

• Improved error message when new is provided with a nil value
• Fixed ternary expression sometimes picking a bad register
• Fixed possible buffer overflow when processing comments

Standard Library:

• json.encode now errors when provided with a non-finite number such as NaN or infinity
• Fixed a rare crash with json.encode

• Compile-Time Evaluation: Fixed $elseif not working
• Fixed derived classes having their __index overwritten

Standard Library:

• Improved scheduler's handling of errorfunc so debug.traceback is more useful
• Optimized base64 decode operations
• FFI: Fixed unloading library if it's out of scope but its functions are not
• FFI: Fixed incorrectly writing f32 & f64 values for struct members
• Fixed various issues with big inputs on dumpvar, exportvar, json.encode, json.decode, xml.encode, & xml.decode

• Compile-Time Evaluation: io.contents and type are now also available
• Compile-Time Evaluation: Table return type is now supported (for functions like url.parse)
• Improved handling when a C++ exception is thrown during ffi.call
• Fixed not inferring that a keyword should be disabled when used as a global variable
  • For Integrators: Added PLUTO_PARANOID_KEYWORD_DETECTION to make this more aggressive
• Fixed infinite loop when switch control value contains or or and
• Fixed base32.decode not working correctly on some ARM systems

• Added io.mkdir as an alias for io.makedir
• Added io.mkdirs as an alias for io.makedirs
• Fixed class preparsing issues with 'switch' & 'do' statements
• Fixed not being able to use reserved identifiers with colon call syntax

• Compatibility: Fixed not inferring that a keyword should be disabled from parameter
• Universal Block Opener: Fixed do not being accepted instead of then for catch and $if
• FFI library: Improved cdef parsing and error reporting
• Crypto library: Fixed returning incorrect hex digest for MD5 in some cases
• Socket library: Fixed an issue where the remote closing a connection too soon could cause recv/peek to never see some data that was sent

• Added chained comparisons (e.g. 1 <= i <= #t)
• Added private methods to classes
• Private fields (and methods) can be declared and accessed anywhere inside the class now. Previously, you needed to define a private field before you accessed it. This is no longer a restriction.
• Pluto now automatically detects if non-compatible keywords should be enabled or disabled based on usage
  • This is overwritten by the scripter using pluto_use or the integrator or user managing compatibility mode, so it only applies when absolutely zero configuration has been applied. This is a significant improvement for lua source code compatibility.
• do can now be used instead of then and begin
• if expressions are now no longer deprecated but require an end (e.g. print(if a then b else c end))
• $define statement now requires an assignment
• Fixed not being able to load Lua C modules on Linux
  • For simplicity in this regard, Pluto now always uses the C ABI to export lua_ functions and the C++ ABI for pluto_ functions.

Standard library:

• Added canvas library
• Added ffi library
• Added regex library
• Added assert.contains
• Added bigint.eq, bigint.lt, & bigint.le
• Added crypto.ripemd160
• Added crypto.exportkey & crypto.importkey
• Added crypto.decompress
• Added string.tohex & string.fromhex
• Added table.findindex/findkey, table.back, table.keys, table.modget, table.modset, table.slice, table.countvalues, & table.chunk
• Added socket.getpeer, socket.peek, socket.getside, socket.istls, & socket.isopen
• Added optional limit argument to string.split
• Added io.cwd and io.chdir as aliases for io.currentdir
• socket.starttls can now be used on server sockets
• Optimized json.encode with __order
• Fixed handling when an invalid RSA private key is passed to crypto.encrypt, crypto.decrypt, crypto.sign