2006-02-12
We are pleased to announce the release of Guile 1.8.0. It can be found here:

ftp://ftp.gnu.org/gnu/guile/guile-1.8.0.tar.gz

Its SHA1 checksum is

22462680feeda1e5400195c01dee666162503d66 guile-1.8.0.tar.gz

The NEWS file is quite long. Here are the most interesting entries:

Changes since 1.6:
• Guile is now licensed with the GNU Lesser General Public License.
• The manual is now licensed with the GNU Free Documentation License.
• We now use GNU MP for bignums.
• We now have exact rationals, such as 1/3.
• We now use native POSIX threads for real concurrent threads.
• There is a new way to initalize Guile that allows one to use Guile from threads that have not been created by Guile.
• Mutexes and condition variables are now always fair. A recursive mutex must be requested explicitely.
• The low-level thread API has been removed.
• There is now support for copy-on-write substrings and mutation-sharing substrings.
• A new family of functions for converting between C values and Scheme values has been added that is future-proof and thread-safe.
• The INUM macros like SCM_MAKINUM have been deprecated.
• The macros SCM_STRINGP, SCM_STRING_CHARS, SCM_STRING_LENGTH, SCM_SYMBOL_CHARS, and SCM_SYMBOL_LENGTH have been deprecated.
• There is a new way to deal with non-local exits and re-entries in C code, which is nicer than scm_internal_dynamic_wind.
• There are new malloc-like functions that work better than scm_must_malloc, etc.
• There is a new way to access all kinds of vectors and arrays from C that is efficient and thread-safe.
• The concept of dynamic roots has been factored into continuation barriers and dynamic states.

2006-02-12
We are pleased to announce the release of Guile 1.7.91. This is a release candidate for Guile 1.8.

2005-03-09
We are pleased to announce the release of Guile 1.7.2. This is a 'technology preview' for the upcoming Guile 1.8.

2004-12-21
We are pleased to announce Guile release 1.6.7. This is the next maintenance release for the 1.6 stable series. You can find it here. This is primarily a bugfix release. Please see the NEWS file for a full summary of the changes, but here are the highlights:

• A build problem has been fixed. Previously, on some systems, the build would fail when libguile-ltdl couldn't be found during the build.
• The array-map! and array-map-in-order! functions now allow a single source argument. In prior versions, calls with just one source array were rejected.
• A string->number overflow for bases other than 2, 10 and 16 has been fixed. Among other things, this affected octal literal constants.
• The argument order for the equality predicate passed to the SRFI-1 functions alist-delete and alist-delete! now matches the SRFI-1 specification.
• In accordance with the SRFI-13 specification, the functions string-any and string-every now make a tail call to their predicate function upon reaching the last character in the string.

2004-11-29
We are pleased to announce Guile release 1.6.6. This is the next maintenance release for the 1.6 stable series. You can find it here. This is primarily a bugfix release. Please see the NEWS file for a full summary of the changes, but here are the highlights:

• SRFI-39 should work now. A file was missing from the distribution.
• A libltdl related build problem has been fixed.
• A bug in uvec_equalp has been fixed.
• In scm_charnames and scm_charnums, sp is now an alias for space.

2004-10-05
We are pleased to announce Guile release 1.6.5. This is the next maintenance release for the 1.6 stable series. You can find it here. This is primarily a bugfix release. Please see the NEWS file for a full summary of the changes, but here are the highlights:

• SRFI-31 has been added (special form `rec' for recursive evaluation). Try (use-modules (srfi srfi-31)).
• SRFI-39 has been added (parameter objects)
• SRFI-19 has been fixed: date-week-number now correctly respects the requested day of week starting the week.
• SRFI-4 has been overhauled. Bugs have been fixed, and performance may be improved in certain situations. Among other things, large values in 64-bit homogeneous vectors should print correctly now.
• In the srfi-1 module's delete and delete! functions, the order of the arguments to the "=" procedure now matches the SRFI-1 specification.
Bugs have been fixed that prevented the (re)generation of psyntax.pp.
• The use of scm_must_realloc() for memory which is scanned by GC could trigger a GC scan of a free()d block of memory. This has been fixed.
• array-map! and array-map-in-order! now require at least one source array. Previously a call without any source arrays like (array-map! array proc) would cause a segfault. Now such calls are properly rejected.
• gethost no longer causes an exception when trying to throw an exception.
• call-with-output-string won't segv on a closed port. Now an exception is raised.
• open-pipe, open-input-pipe and open-output-pipe used to leave an extra copy of their pipe file descriptor in the child, which was normally harmless, but could prevent the parent seeing eof or a broken pipe immediately. This has been fixed.
• Properties set with set-source-properties! can now be read back correctly with source-properties.
• Guile is now compiled with -fno-strict-aliasing when gcc is detected.
• The --enable-htmldoc option has been removed from 'configure', because support for translating the documentation into HTML is now always provided. Use 'make html'.

(But what is Guile?)