Please send Guile bug reports to bug-guile@gnu.org.
+Changes in 2.0.4 (since 2.0.3):
+
+* Features
+
+** Better debuggability for interpreted procedures
+
+Guile 2.0 came with a great debugging experience for compiled
+procedures, but the story for interpreted procedures was terrible. Now,
+at least, interpreted procedures have names, and the 'arity procedure
+property is always as correct (or, as it can be, in the presence of
+case-lambda).
+
+** Support for cross-compilation.
+
+One can now use a native Guile to cross-compile `.go' files for a
+different architecture. See the documentation for `--target' in the
+"Compilation" section of the manual, for how to use the cross-compiler.
+See the "Cross building Guile" section of the README, for more on how to
+cross-compile Guile itself.
+
+** Fluids can now have default values.
+
+Fluids are used for dynamic and thread-local binding. They have always
+inherited their values from the context or thread that created them.
+However, there was a case in which a new thread would enter Guile, and
+the default values of all the fluids would be `#f' for that thread.
+
+This has now been fixed so that `make-fluid' has an optional default
+value, which defaults to `#f'.
+
+** Garbage collector tuning.
+
+The garbage collector has now been tuned to run more often under some
+circumstances.
+
+*** Unmanaged allocation
+
+The new `scm_gc_register_allocation' function will notify the collector
+of unmanaged allocation. This will cause the collector to run sooner.
+Guile's `scm_malloc', `scm_calloc', and `scm_realloc' unmanaged
+allocators eventually call this function. This leads to better
+performance under steady-state unmanaged allocation.
+
+*** Transient allocation
+
+When the collector runs, it will try to record the total memory
+footprint of a process, if the platform supports this information. If
+the memory footprint is growing, the collector will run more frequently.
+This reduces the increase of the resident size of a process in response
+to a transient increase in allocation.
+
+*** Management of threads, bignums
+
+Creating a thread will allocate a fair amount of memory. Guile now does
+some GC work (using `GC_collect_a_little') when allocating a thread.
+This leads to a better memory footprint when creating many short-lived
+threads.
+
+Similarly, bignums can occupy a lot of memory. Guile now offers hooks
+to enable custom GMP allocators that end up calling
+scm_gc_register_allocation'. These allocators are enabled by default
+when running Guile from the command-line. To enable them in libraries,
+set the `scm_install_gmp_memory_functions' variable to a nonzero value
+before loading Guile.
+
+Thanks to Mark Weaver for inspiration.
+
+** SRFI-39 parameters are available by default.
+
+Guile now includes support for "parameters", as defined by SRFI-39, in
+the default environment. See
+ * module/ice-9/boot-9.scm (<parameter>, make-parameter, parameter?)
+ (parameter-fluid, parameter-converter, parameterize): New top-level
+ bindings, implementing SRFI-39 parameters. Currently,
+ current-input-port and similar procedures are not yet parameters.
+
+** add current-warning-port
+
+ * libguile/ports.h:
+ * libguile/ports.c (scm_current_warning_port)
+ (scm_set_current_warning_port): New functions, wrapping the Scheme
+ parameter.
+
+ * module/ice-9/boot-9.scm (current-warning-port): New parameter,
+ defining a port for warnings.
+
+ warnings written to warning port
+
+ * libguile/deprecation.c (scm_c_issue_deprecation_warning):
+ * libguile/load.c (auto_compile_catch_handler):
+ (scm_sys_warn_auto_compilation_enabled, scm_primitive_load_path):
+ * module/ice-9/boot-9.scm (warn, %load-announce, duplicate-handlers)
+ (load-in-vicinity):
+ * module/system/base/message.scm (warning): Write to the warning port.
+ (*current-warning-port*): Alias the warning port.
+
+
+** add define-syntax-parameter, same as define-syntax
+
+ * module/ice-9/psyntax.scm (define-syntax-parameter): New toplevel form.
+ Will be used to implement syntax parameters, following Barzilay,
+ Culpepper, and Flatt's 2011 SFP workshop paper, "Keeping it Clean with
+ syntax-parameterize". Adds a new binding type and definition form.
+
+** deprecate fluid-let-syntax in favor of syntax-parameterize
+
+ * module/ice-9/psyntax.scm (syntax-parameterize): Rename from
+ fluid-let-syntax.
+
+Author: Ian Price <ianprice90@googlemail.com>
+Date: Sat Jan 7 01:59:33 2012 +0000
+
+ document syntax parameters
+
+ * doc/ref/api-macros.texi (Macros): Add subsection for "Syntax Parameters"
+
+** primitive-load returns the value(s) of the last expression
+
+ * libguile/load.c (scm_primitive_load): Return the values yielded from
+ evaluating the last expression in the file.
+
+* Bug fixes
+
+** Fix R6RS `fold-left' so the accumulator is the first argument.
+** fix <dynwind> serialization.
+** Fix bugs in the new optimizer.
+
+The new `peval' optimizer had three bugs: one related to dynamic-wind,
+one regarding propagation of expressions that yield multiple values, and
+one that would mistakenly turn (cons 'foo #nil) into (list 'foo). These
+were fixed.
+
+** when leaving a non-tail let, allow bound vals to be collected
+
+ * module/language/tree-il/compile-glil.scm (flatten-lambda-case): Clear
+ lexical stack slots at the end of a non-tail let, letrec, or fix.
+ Fixes http://debbugs.gnu.org/9900.
+
+** fix bit-set*! bug (!)
+
+ * libguile/bitvectors.c (scm_bit_set_star_x): Fix a long-standing (since
+ 2005) bug in which instead of using the kv bitvector, we actually use
+ the `v' bitvector. Also, change to allow `kv' being shorter than
+ `v'.
+
+** fix bug in make-repl when lang is actually a language
+
+ * module/system/repl/common.scm (make-repl): Fix to accept language
+ objects in addition to symbols. Fixes http://debbugs.gnu.org/9857.
+ Thanks to Tristan Colgate for the report.
+
+** hack the port-column of current-output-port after printing a prompt
+
+ * module/ice-9/boot-9.scm (repl-reader): Reset the output-column to 0
+ after printing the prompt. Fixes bug 9664.
+
+** FFI: Hold a weak reference to the CIF made by `procedure->pointer'.
+
+ * libguile/foreign.c (scm_procedure_to_pointer): Keep a weak reference
+ to CIF so that it is not reclaimed before POINTER. Before that it
+ could be reclaimed and typically reused to store the CIF of another
+ procedure with the same arity, leading to obscure wrong-type-arg
+ errors.
+
+** Allow overlapping regions to be passed to `bytevector-copy!'.
+
+ Reported by Dmitry Chestnykh <dmitry@codingrobots.com>.
+ Fixes <http://debbugs.gnu.org/10070>.
+
+** Fix `validate-target' in (system base target).
+
+ * module/system/base/target.scm (validate-target): Accept any tuple with
+ at least 3 parts.
+
+** fix validators for various list-style headers
+
+commit 69b8c5df14dbc1f9602925788507d371a529dfbe
+Author: Daniel Hartwig <mandyke@gmail.com>
+Date: Wed Nov 23 20:56:10 2011 +0100
+
+ * module/web/http.scm (default-val-validator): Valid with no value.
+ (key-value-list?): Keys are always symbols, do not accept strings.
+ (validate-param-list): Apply `valid?' to list elements.
+ (validate-credentials): Validate param for Basic scheme, which
+ is parsed as a string.
+ (declare-symbol-list-header!): `list-of?' args were in wrong order.
+ ("Cache-Control"): Replace `default-val-validator' with more
+ specific procedure.
+ ("Accept"): Validate on first param which has no value.
+
+** FFI: Hold a weak reference to the procedure passed to `procedure->pointer'.
+
+ * libguile/foreign.c (scm_procedure_to_pointer): Keep a weak reference
+ to PROC.
+
+ * test-suite/tests/foreign.test ("procedure->pointer")["procedure is
+ retained"]: New test.
+
+** ,language at REPL sets current-language
+
+ * module/system/repl/command.scm (language): Set the
+ *current-language*.
+ * module/system/repl/repl.scm (start-repl): Create a new dynamic scope
+ for *current-language*.
+
+** new print option escape-newlines, defaults to #t
+
+ * libguile/private-options.h (SCM_PRINT_ESCAPE_NEWLINES_P):
+ * libguile/print.c: Add new escape-newlines print option, defaulting to
+ on.
+ (write_character): For newlines, if SCM_PRINT_ESCAPE_NEWLINES_P, then
+ print them as \n.
+ (scm_init_print): Refactor print options initialization.
+
+** allow URIs of the form file:///etc/hosts
+
+ * module/web/uri.scm (parse-authority): Allow empty authorities, so that
+ we accept URIs of the form, file:///etc/hosts.
+
+** peval: Truncate multiple values when extending the environment.
+
+ Reported by Cédric Cellier <rixed@happyleptic.org>.
+
+** Add an exception printer for `getaddrinfo-error'.
+
+ * module/ice-9/boot-9.scm (getaddrinfo-error-printer): New procedure.
+ Use it as the `getaddrinfo-error' exception printer.
+
+** current-input-port et al are srfi-39 parameters
+
+** add an apropos-hook to ice-9 session
+
+ * module/ice-9/session.scm: #:keyword-ify the define-module form, and
+ export apropos-hook.
+ (apropos-hook): New hook.
+ (apropos, apropos-fold): Run the apropos-hook.
+
+** Add `file-system-fold' and `file-system-tree' to (ice-9 ftw).
+
+ * doc/ref/misc-modules.texi (File Tree Walk): Document
+ `file-system-tree' and `file-system-fold'.
+
+** Arrange to convert command-line arguments from the right encoding.
+
+ This is a temporary workaround for the 2.0 stable series. The next
+ stable series should have an implicit `setlocale (LC_ALL, "")' call,
+ which will make this unnecessary.
+
+ * libguile/feature.c (progargs_fluid): Rename to...
+ (scm_program_arguments_fluid): ... this. Update users.
+
+ * libguile/feature.h (scm_program_arguments_fluid): New internal
+ declaration.
+
+ * libguile/init.c (invoke_main_func): Call
+ `scm_i_set_boot_program_arguments' instead of
+ `scm_set_program_arguments'.
+
+ * libguile/script.c (locale_arguments_to_string_list,
+ scm_i_set_boot_program_arguments): New functions.
+ (scm_compile_shell_switches): Use `locale_arguments_to_string_list'.
+
+ * libguile/script.h (scm_i_set_boot_program_arguments): New internal
+ declaration.
+
+ * test-suite/standalone/Makefile.am (check_SCRIPTS, TESTS): Add
+ `test-command-line-encoding'.
+ * test-suite/standalone/test-command-line-encoding: New file.
+
+** ftw: Add `scandir'.
+
+ Suggested by Nala Ginrut <nalaginrut@gmail.com>.
+
+ * module/ice-9/ftw.scm (scandir): New procedure.
+ * test-suite/tests/ftw.test ("scandir"): New test prefix.
+ * doc/ref/misc-modules.texi (File Tree Walk): Document `scandir'.
+
+** FFI: Properly unpack small integer return values in closure call.
+
+ Fixes <http://debbugs.gnu.org/10203>.
+
+commit a6ea740b3ca1174cc4414ef9b03659fe259d0fe6
+Author: Andreas Schwab <schwab@linux-m68k.org>
+Date: Sat Dec 3 12:17:46 2011 +0100
+
+ * libguile/foreign.c (unpack): Add parameter return_value_p.
+ Properly store integer return values smaller than int.
+ (scm_i_foreign_call): Update call to unpack.
+ (invoke_closure): Likewise.
+
+ libguile/foreign.c | 40 +++++++++++++++++++++++++++++++---------
+ 1 files changed, 31 insertions(+), 9 deletions(-)
+
+** Add a deprecated alias for $expt
+
+commit 3cc21d7995313782f6def1789ca0150e95c8363f
+Author: Christian Persch <chpe@gnome.org>
+Date: Thu Nov 24 23:10:21 2011 +0100
+
+ * module/ice-9/deprecated.scm: Add alias for $expt. $expt was removed
+ in commit 6fc4d0124d633d1b3ddc5af82967f23bd17556f8 but no deprecated
+ alias was added in ad79736c68a803a59814fbfc0cb4b092c2b4cddf like for
+ all the other deprecated $sin, $cos, ... functions.
+
+ module/ice-9/deprecated.scm | 5 +++++
+ 1 files changed, 5 insertions(+), 0 deletions(-)
+
+** document invalidity of (begin) as expression; add back-compat shim
+
+ * doc/ref/api-control.texi (begin): Update to distinguish between
+ splicing begin and sequencing begin.
+
+ * module/ice-9/psyntax.scm (expand-expr): Add a back-compatibility shim
+ for `(begin)'.
+
+** peval fix: (cons 1 #nil) is not (list 1)
+
+** Extend handling of "Cache-Control" header.
+
+Author: Daniel Hartwig <mandyke@gmail.com>
+
+ * module/web/http.scm ("Cache-Control"): Value for `max-stale' is
+ optional. Strict validation for value-less directives (`no-store',
+ etc.). String values optional for "cache-extension" directives.
+ * test-suite/tests/web-http.test: Value for `max-stale' is optional.
+
+** HTTP: Fix qstring writing of cache-extension values
+
+ * module/web/http.scm ("Cache-Control"): Write string values using the
+ default val writer, to get quoting correct.
+
+** freebsd build fixes (incomplete)
+
+** fix generalized-vector-{ref,set!} for slices
+
+ * libguile/generalized-vectors.c (scm_c_generalized_vector_ref):
+ (scm_c_generalized_vector_set_x): Fix for the case in which base was
+ not 1, lbnd was not 0, or inc was not 1.
+
+ * test-suite/tests/arrays.test (array): Add a test. Thanks to Daniel
+ Llorens for the report.
+
+** Fix erroneous check in `set-procedure-properties!'.
+
+ * libguile/procprop.c
+ (scm_set_procedure_properties_x)[SCM_ENABLE_DEPRECATED == 1]: Pass arguments
+ to `scm_assq' in the right order, and check its return value with
+ `scm_is_true'. Reported by Mike Gran <spk121@yahoo.com>.
+
+** `write-request-line' writes absolute paths, not absolute URIs.
+
+commit ab66fb3cd1d6e4343741ccb406e17eb3314eba84
+Author: Ian Price <ianprice90@googlemail.com>
+Date: Thu Sep 29 03:12:00 2011 +0100
+
+ * module/web/http.scm (write-request-line): RFC 2616 says that absolute
+ paths are used to identify resources on an origin server.
+
+** don't leak file descriptors when mmaping objcode
+
+ * libguile/objcodes.c (make_objcode_from_file): Close the mmap'd file,
+ so that we don't leak the descriptor. I was previously under the
+ mistaken impression that closing the fd unmapped the memory, which is
+ not the case. Thanks to Cedric Cellier for the tip!
+
+** Fix bugs related to mutation, the null string, and shared substrings
+
+ * libguile/strings.c (scm_i_is_narrow_string, scm_i_try_narrow_string,
+ scm_i_string_set_x): Check to see if the provided string is a
+ mutation-sharing substring, and do the right thing in that case.
+ Previously, if such a string was passed to these functions, they would
+ behave very badly: while trying to fetch and/or mutate the cell
+ containing the stringbuf, they were actually fetching or mutating the
+ cell containing the original shared string. That's because
+ mutation-sharing substrings store the original string in CELL_1,
+ whereas all other strings store the stringbuf there.
+
+** deprecate SCM_ASRTGO
+
+** allow scm_display_error to use a stack as the first argument
+
+ * libguile/backtrace.c (scm_display_error): Allow a deprecated use of
+ this function to pass a stack as the first argument. Thanks to Peter
+ Brett for pointing it out, in
+ http://lists.gnu.org/archive/html/guile-user/2011-06/msg00000.html.
+
+** i18n: Fix gc_malloc/free mismatch on non-GNU systems.
+
+ * libguile/i18n.c (scm_i_locale_free): Remove.
+ (smob_locale_free): Define only when USE_GNU_LOCALE_API.
+ (scm_make_locale)[!USE_GNU_LOCALE_API]: Allocate
+ `c_locale->locale_name' with `scm_gc_strdup', not `malloc'.
+
+** Make sure `regexp-quote' tests use Unicode-capable string ports.
+
+ * test-suite/tests/regexp.test (with-unicode): New macro.
+ ("regexp-quote"): Wrap all `regexp-quote' calls in it. This fixes
+ tests on machines where the default port encoding is US-ASCII.
+
+** Have `cpu-word-size' error out on unknown CPUs; add support for MIPSEL.
+
+** permit non-date values for Expires header
+
+ * module/web/http.scm ("Expires"): Permit (some) non-date values.
+
+** Remove null string optimization from scm_from_stringn
+
+ * libguile/strings.c (scm_from_stringn): Always return a freshly
+ allocated string from scm_from_stringn, even when asked to construct
+ the null string, in accordance with the R5RS. Previously, we
+ optimized the null string case by returning a reference to a global
+ null string object (scm_nullstr).
+
+** Empty substrings no longer reference the original stringbuf
+
+ * libguile/strings.c (scm_i_substring, scm_i_substring_read_only,
+ scm_i_substring_shared): When asked to create an empty substring,
+ return a freshly allocated null string. Previously, an empty
+ substring needlessly held a reference to the original stringbuf.
+
+** scm_i_substring_copy tries to narrow the substring
+
+ * libguile/strings.c (scm_i_substring_copy): Try to narrow the substring
+ if it came from a wide string.
+
+** Avoid calling `u32_conv_from_encoding' on the null string
+
+ * libguile/strings.c (scm_from_stringn): Avoid calling
+ `u32_conv_from_encoding' on the null string, by using the same
+ fast-path code used if (encoding == NULL). This is an optimization,
+ and also avoids any possible encoding errors.
+
Changes in 2.0.3 (since 2.0.2):
* Speed improvements
HCoop / bpt / guile.git / commitdiff