62 lines
2.3 KiB
Plaintext
62 lines
2.3 KiB
Plaintext
-*- org -*-
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#+TITLE: Mes NEWS – history of user-visible changes
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#+STARTUP: content hidestars
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Copyright © 2016 Jan Nieuwenhuizen <janneke@gnu.org>
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Copying and distribution of this file, with or without modification,
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are permitted in any medium without royalty provided the copyright
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notice and this notice are preserved.
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Please send Mes bug reports to janneke@gnu.org.
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* Changes in 0.3 since 0.2
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** Core
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*** Number-based rather than pointer-based cells.
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*** Garbage collector aka Jam scraper.
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A variant on SICP's stop and copy Garbage Colletor (Jam Scraper?)
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algorithm has been implemented.
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* Changes in 0.2 since 0.1
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** Core
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*** Names of symbols and strings are list of characters [WAS: c-string].
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*** Sc-expand from pre-R6RS's psyntax has been integrated.
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*** Undefined variable error now shows the name of the undefined variable.
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*** There is now only one SCM type for builtin functions.
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*** Macro expansion has been cleaned-up.
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** Language
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*** Mes now provides a subset of R6RS.
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*** Mes now provides syntax-case.
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*** Mes now provides `load'.
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** Noteworthy bug fixes
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*** Using values as second parameter of builtin function yields first value.
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*** Quoted internals (e.g. 'if 'lambda) are now symbols.
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*** Syntax error now exits.
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*** Make+Bash voodoo has been replaced by build-aux/mes-snarf.scm.
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*** Apply now accepts multiple list arguments.
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*** Apply of character, inernal, number, string is an error.
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*** Quasisyntax reading
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* Changes in 0.1 (since progress report #2)
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** Core
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*** expand_macro is now a separate function.
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*** A smaller core can now compiled using BOOT=1.
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The smaller core does not provide define, define-macro, or quasiquote;
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these are provided from a Scheme version of implemented eval/apply.
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** Language
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*** Mes now provides a subset of R5RS.
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*** Mes now provides let-syntax.
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*** Mes now provides match.
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*** Mes now provides quasisyntax, unsyntax and unsyntax-splicing.
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** User interface
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*** Mes now provides a REPL, run:
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scripts/repl.mes
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*** Mes compiler can be run as a script:
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scripts/mescc.mes doc/examples/main.c
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*** Macro expansion can be inspected in the REPL, e.g.:
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,expand (and 0 1)
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** Noteworthy bug fixes
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*** Performance: scripts/mescc.mes now takes 2s to compile main.c (was 1'20").
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*** Symbols are now truly unique.
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* '(), #t, #f are no longer symbols.
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