On 2021年1月7日木曜日 14時09分08秒 CET you wrote: > We are delighted to announce GNU Guile release 3.0.5, the latest in the > 3.0 stable release series. > > Compared to the previous release in the 3.0 series, Guile 3.0.5 can > compile chained "if" expressions into the equivalent of what a C > compiler does with "switch". It also adds some new warning passes. > > Compared to the previous stable series (2.2.x), Guile 3.0 adds support > for just-in-time native code generation, speeding up all Guile programs. > See the NEWS extract at the end of the mail for full details. > > > The Guile web page is located at http://gnu.org/software/guile/, and > among other things, it contains a copy of the Guile manual and pointers > to more resources. > > Guile is an implementation of the Scheme programming language, packaged > for use in a wide variety of environments. In addition to implementing > the R5RS, R6RS, and R7RS Scheme standards, Guile includes full access to > POSIX system calls, networking support, multiple threads, dynamic > linking, a foreign function call interface, powerful string processing, > and HTTP client and server implementations. > > Guile can run interactively, as a script interpreter, and as a Scheme > compiler to VM bytecode. It is also packaged as a library so that > applications can easily incorporate a complete Scheme interpreter/VM. > An application can use Guile as an extension language, a clean and > powerful configuration language, or as multi-purpose "glue" to connect > primitives provided by the application. It is easy to call Scheme code > from C code and vice versa. Applications can add new functions, data > types, control structures, and even syntax to Guile, to create a > domain-specific language tailored to the task at hand. > > Guile 3.0.5 can be installed in parallel with Guile 2.2.x; see > http://www.gnu.org/software/guile/manual/html_node/Parallel-Installations.ht > ml. > > A more detailed NEWS summary follows these details on how to get the > Guile sources. > > Here are the compressed sources: > http://ftp.gnu.org/gnu/guile/guile-3.0.5.tar.lz (10MB) > http://ftp.gnu.org/gnu/guile/guile-3.0.5.tar.xz (12MB) > http://ftp.gnu.org/gnu/guile/guile-3.0.5.tar.gz (21MB) > > Here are the GPG detached signatures[*]: > http://ftp.gnu.org/gnu/guile/guile-3.0.5.tar.lz.sig > http://ftp.gnu.org/gnu/guile/guile-3.0.5.tar.xz.sig > http://ftp.gnu.org/gnu/guile/guile-3.0.5.tar.gz.sig > > Use a mirror for higher download bandwidth: > http://www.gnu.org/order/ftp.html > > Here are the SHA256 checksums: > > a484eeffbd4d655b0c05b1382df8d40f1e561f7e71b963065762f6a6a497c675 > guile-3.0.5.tar.lz > 2d76fb023d2366126a5fac04704f9bd843846b80cccba6da5d752318b03350f1 > guile-3.0.5.tar.xz > 222046009a20b432ffa7c11b8d5a1d9ad0d8627be05cc1e8af612bc54ba2ea85 > guile-3.0.5.tar.gz > > [*] Use a .sig file to verify that the corresponding file (without the > .sig suffix) is intact. First, be sure to download both the .sig file > and the corresponding tarball. Then, run a command like this: > > gpg --verify guile-3.0.5.tar.gz.sig > > If that command fails because you don't have the required public key, > then run this command to import it: > > gpg --keyserver keys.gnupg.net --recv-keys > 4FD4D288D445934E0A14F9A5A8803732E4436885 > > and rerun the 'gpg --verify' command. > > This release was bootstrapped with the following tools: > Autoconf 2.69 > Automake 1.16.2 > Libtool 2.4.6 > Gnulib v0.1-1157-gb03f418 > Makeinfo 6.7 > > An extract from NEWS follows. > > > Changes in 3.0.5 (since 3.0.4) > > * New interfaces and functionality > > ** O(1) compilation of `case' and related expressions > > Guile now optimizes chains of eq? comparisons to constants, resulting in > O(1) dispatch time, regardless of the length of the chain. This > optimization is also unlocked in many cases for `match' expressions with > many similar clauses whose first differentiator are constants. > > ** New (ice-9 copy-tree) module > > This module includes the `copy-tree' procedure that was previously > implemented in C and present in the default `(guile)' module. See > "Copying" in the manual. > > ** New warning: use-before-definition > > This analysis, enabled at `-W1', issues warnings for programs that use > top-level variables before they are defined. > > ** New warning: non-idempotent-definition > > This analysis, enabled at `-W1', issues warnings for programs that whose > use of a variable is ambiguous. For example, in the program: > > (define saved-add +) > (define + error) > > The intention would seem to be to "save" the value of the base `+' > procedure, then override it locally. However if this program is ever > loaded twice, then the second time it is loaded, `+' will be taken from > the local binding instead of the import. Users that want this kind of > behavior should either use lexical bindings instead of top-level > bindings, or otherwise rename important clobbered bindings via modules. > > * New deprecations > > ** `copy-tree' in the default environment, and `scm_copy_tree' from C > > Import the `(ice-9 copy-tree)' module instead. > > ** `unbound-variable-analysis`, `macro-use-before-definition-analysis` > > These bindings from `(language tree-il analyze)' are replaced by the > use-before-definition analysis, which powers a number of warnings. Use > `make-use-before-definition-analysis', but note that these interfaces > are quite intimate parts of the compiler! > > * Incompatible changes > > ** `copy' read-option removed > > This read option would include a copy of the source expression in the > source-properties of each subexpression. This option has always been > off by default and lost most of its use value with the switch to a > compiler in Guile 2.0.
Looks like a great release. Congratulations and I'm looking forward to playing around with it. -Tim
