Version “1.70” released 2021-11-25

This version further improves compliance with R7RS and brings some new SRFIs

The main changes in this version are:

• Added the some comma-commands to the REPL (,pwd ,cd and ,shell)
• Use system Posix glob instead of the provided gnu-glob
• Improved reader (|.| is wow valid symbol as well as numbers with bars)
• New primitive/syntaxes
  • tagbody
  • repeat
  • keyword-colon-position is a parameter object specifying the places where the colon can be used in keyword.
• Suppressed the calls to insecure C function (such as strcpy or strcat)
• List reading is tail recursive now
• Added an extension directory, which contains for now:
  • GTKlos which gives access to the GTK+ toolkit using the OO layer available in STklos. This version uses the GTK+3 toolkit. It also defines a canvas widget. if the to have the goocanvas library is installed.
  • an extension which permits to make a file system in Scheme, using FUSE (Filesystem in Userspace).
• Use gmp-mini (which is provided) if gmp is not available, instead of our version which was based on old unmaintained version of mpi.
• Support of new SRFIs:
  • SRFI-25: Multi-dimensional Arrays
  • SRFI-27: Source of random bits
  • SRFI-29: Localization
  • SRFI-94: Type-Restricted Numerical Functions
  • SRFI-132: Sort Libraries
  • SRFI-133: Vector Library (R7RS-compatible)
  • SRFI-143: Fixnums
  • SRFI-144: Flonums
  • SRFI-170: POSIX API
  • SRFI-208: NaN procedures
  • SRFI-214: Flexvectors
  • SRFI-217: Integer Sets
  • SRFI-219: Define higher-order lambda
  • SRFI-223: Generalized binary search procedures
• SRFI can be implemented in C and Scheme
• Various optimizations
• Documentation update
• Added tests
• Bug fixes

Version “1.60” released 2021-02-15

As the previous version, R7RS compliance is enhanced and a bunch of new SRFIS has been implemented (thanks again to Jeronimo Pellegrini — @jpellegrini).

Changes in this version are:

• Added option -I and -A to prepend and append to the loadpath
• New primitives/syntaxes
  • require-feature
  • define-values
• Added makefile targets to install only subparts of STklos on constrained environments
• Reader accepts now #i for rationals
• Changed the version of LALR-SCM to version 2.5.0
• Added scripts and documentation in the exemples directory
• Definition of a new framework for implementing SRFIs
  • Documentation of SRFI is now automatically built
  • SRFI tests are automatically done with make tests
  • Automatic update of the SUPPORTED-SRFIS file
• Support of new SRFIs
  • SRFI-5: A compatible let form with signatures and rest arguments
  • SRFI-41: Streams
  • SRFI-61: A more general COND clause
  • SRFI-113: Sets and Bags
  • SRFI-127: Lazy Sequences
  • SRFI-128: Comparators (reduced)
  • SRFI-130: Cursor-based string library
  • SRFI-134: Immutable Deques
  • SRFI-135: Immutable Texts
  • SRFI-137: Minimal Unique Types
  • SRFI-192: Port Positioning
  • SRFI-193: Command line
  • SRFI-195: Multiple-value boxes
  • SRFI-196: Range Objects
  • SRFI-207: String-notated bytevectors
  • SRFI-216: SICP Prerequisites (Portable)
• Documentations update
• Added tests
• Bug fixes

Version “1.50” released 2020-08-17

This version enhances R7RS compliance and a lot of new SRFIs (thanks to the awesome work of Jeronimo Pellegrini — @jpellegrini)

Changes in this version are:

• Exceptions behavior is now R7RS compliant
• current{input,ouput,error}-port are now parameters as required by R7RS.
• Socket ports are now both binary and textual.
• Added support for Android.
• Better support of 32 bits big-endian architectures
• Support of more architectures. STklos can be run now on
  • GNU/Linux on x86_64 (64 bits)
  • GNU/Linux on ARM v7l (32 bits)
  • GNU/Linux on MIPS (32 bits little and big endian)
  • FreeBSD
  • OPenBSD
  • MacOS X86_64
  • Windows 10 (on WSL)
  • Android on ARM 64
• Support of new SRFIs (most of them were implemented by @jpellegrini):
  • SRFI-37: args-fold: a program argument processor
  • SRFI-51: Handling rest list
  • SRFI-54: Formatting
  • SRFI-64: A Scheme API for test suites
  • SRFI-117: Queues based on lists
  • SRFI-118: Simple adjustable-size strings
  • SRFI-129: Titlecase procedures
  • SRFI-141: Integer Division
  • SRFI-145: Assumptions
  • SRFI-151: Bitwise Operations
  • SRFI-156: Syntactic combiners for binary predicates
  • SRFI-158: Generators and Accumulators
  • SRFI-161: Unifiable Boxes
  • SRFI-169: Underscores in numbers
  • SRFI-171: Transducers
  • SRFI-173: Hooks
  • SRFI-174: POSIX Timespecs
  • SRFI-175: ASCII character library
  • SRFI-176: Version flag
  • SRFI-180: JSON
  • SRFI-185: Linear adjustable-length strings
  • SRFI-189: Maybe and Either: optional container types
  • SRFI-190: Coroutines Generators
• Better documentation (thanks to @jpellegrini again! — need to be completed)
  • description of the internals of STklos
  • description of the VM instructions
  • instructions to compile STklos on various OS
  • updated manual’s bibliography
• Bug fixes

Version “1.40” released 2020-06-05

Changes in this version are:

• Updated the build tools
• Now STklos is case sensitive by default as required by R7RS the R5RS case insensitivity can be enable with the --case-insensitive option
• New parameter: repl-theme permits to customize REPL prompt colors.
• Added more tests
• Added the #:xxx syntax for keywords for compatibility with other implementations
• Added the R7RS syntaxes letrec, let-values & let-values
• Various bug fixes