Announcements:
== Release 0.9.10
Major feature enhancements
New Features
R7RS Large and SRFI support
We cover R7RS-large Red and Tangerine Edition.
* scheme.ilist: Immutable list library
* scheme.rlist: Random access lists
* scheme.bytevector: R6RS-compatible bytevectors
* scheme.text: Immutable texts
* scheme.show: Combinator formatting
* scheme.regex: Scheme Regular Expressions: Grapheme support is
completed by @pclouds.
* srfi-78: Lightweight testing (now integrated with gauche.test).
* srfi-101: Purely functional random-access pairs and lists
(scheme.rlist)
* srfi-116: Immutable list library (scheme.ilist)
* srfi-130: Cursor-based string library
* srfi-135: Immutable texts (scheme.text)
* srfi-159: Combinator formatting (scheme.show)
* srfi-170: POSIX API
* srfi-174: POSIX timespecs
* srfi-175: ASCII character library
* srfi-176: Version flag. Supported as built-in. (version-alist)
* srfi-178: Bitvector library
* srfi-180: JSON
* srfi-181: Custom ports
* srfi-185: Linear adjustable-length strings
* srfi-189: Maybe and either: optional container types
* srfi-192: Port positioning
* srfi-193: Command line
* srfi-195: Multiple-value boxes (Boxes).
New modules
* parser.peg: PEG parser combinator library. This module has been
unofficially included for long time, but it finally became
official. If you've been using it, check out the document, for
API has been changed. Compatibility module is provided.
* data.skew-list: Skew binary functional random-access list
* data.priority-map: Priority map.
* rfc.uuid: UUID generation and parsing.
* text.external-editor: Running external editor.
* text.pager: Display with pager.
Improvements
String indexing improvements
In Gauche, string access using integer character index costs O(n)
by default, because we store strings in multibyte format. Two
improvements are incorporated to allow O(1) random string access.
* String cursors (srfi-130). It is an object directly points
to a specific character within a string, thus allowing O(1)
access. It is supported natively, so all built-in string
procedures that takes character index also accept string
cursors. See String%20cursors, for the details. This is the
work mostly done by @pclouds.
* String indexing (scheme.text). You can precompute a string
index, which is an auxiliary data attached to a string that
allows O(1) integer character index access. You need O(n) to
compute a string index, but once computed, character index
access in that string becomes O(1). In R7RS-large, scheme.text
library provides this feature (with a distinct type text). In
Gauche, a text is simply a string with a string index computed.
See String indexing for the details.
Note: Gauche internally had string pointers to implement some string
operations efficiently. Now string cursors can be used for that
purpose, we dropped string pointers. If you have code that uses
string pointers, although it was undocumented, you can keep using
it by defining GAUCHE_STRING_POINTER environment variable. We'll
completely drop it in the next release, though.
Immutable pairs
Scheme defines literal pairs to be immutable, but it is up to the
implementation to check it. Gauche used to not check it, allowing
mutating literal pairs. Now it is no longer allowed--it throws an
error. Mutating literal pairs is never correct, and if you get the
error, you've been doing it wrong.
Immutable pairs can also be explicitly constructed using scheme.ilist
module. In Gauche, immutable pairs and lists behaves exactly like
normal pairs and lists, except that they can't be modified. See
Mutable and immutable pairs, for the details.
If your code depends on the previous behavior and can't change
swiftly, set the environment variable GAUCHE_MUTABLE_LITERALS to
restore the old behavior.
Input line editing
The editor feature is enhanced a lot, including online help. Type
M-h h to get a quick cheet sheet.
The line editor isn't turn on by default yet, but you can either
turn on with the command-line option -fread-edit or the environment
variable GAUCHE_READ_EDIT.
Parameters are now built-in
You no longer need to (use gauche.parameter) to use parameters as
defined in R7RS. The module still exists and provides a few obscure
features.
Bitvector literal and incomplete string literals
We now supports bitvector type in the core. Note that there's a
syntax conflict with bitvector literals and incomplete strings;
now the official way of incomplete string literal is to prefix a
string with #**. The older syntax is still recognized as far as
it's not ambiguous. See Incomplete%20strings.
The C-level Port API is overhauled
This only affects for C code using ScmPort. To support future
extensions flexibly, we hide the internal implementation of ScmPort.
It shouldn't affect code that accesses ScmPort via API, but if the
code directly refers to the members of ScmPort, it should be
rewritten to use API.
One notable change is that port positions no longer need to be an
integer offset.
TLS support improvement
* With default configuration, Gauche searches several known
locations of ca-certificates, so it can work mostly out of
the box. See rfc.tls for the details.
* With default configuration, <mbed-tls> is used if it's available.
<ax-tls> is always available but its cipher support is limited
and can't connect to some https sites.
* You can also configure to embed MbedTLS support into Gauche so
that it will run on a system that doesn't have MbedTLS installed.
(See INSTALL.adoc for the details.) Note that if you embed
MbedTLS, the resulting binary is covered by MbedTLS Apache
License 2.0 as well. Windows Installer version has MbedTLS
embedded.
Encoding conversion improvement
Now we support conversion natively, between UTF (8, 16, 32) and
ISO8859-n, as well as between Japanese encodings. We use iconv(3)
only when we need to deal with other encodings.
This is because iconv lacks a necessary API to support srfi-181
transcoded ports properly. If you just need to convert encodings,
you can keep using gauche.charconv and it handles wide variety of
encodings supported by iconv. If you use srfi-181, the conversion
is limited between the natively supported encodings.
We may enhance native support of conversions if there's need for it.
Miscellaneous improvements
* gauche.generator: Add giterate, giterate1.
* gauche.lazy: Add literate.
* format: Make ~f handle complex numbers as well, and added a bunch
of new directives: ~t, , ~~, ~|, and ~$.
* define-hybrid-syntax: The compiler macro feature.
* current-trace-port: A parameter to keep trace output. Output of
debug-print goes to this port, for example. The default is stderr.
* gauche.record: Allow record types to inherit from non-record
class, as long as the superclass doesn't add slots. Also allow
to specify metaclasses.
* gauche.unicode: Conversion procedures utf8->ucs4 etc. now takes
replace strictness that replaces invalid unicode sequence with
U+FFFD. utf8->string is also changed to use the replace character
for invalid input sequence, instead of throwing an error.
* gauche.unicode: string->utf16: Add add-bom? argument.
* gauche.unicode: Add string->utf32, utf32->string.
* identifier?: Now it responds #t to both symbols and wrapped
identifiers. In ER-macro systems, identifiers can be a bare
symbol as well. To check an object is an identifier but not a
symbol, you can use wrapped-identifier? to check an object is
a non-symbol identifier.
* When gosh is run inside a build tree (with -frest option), make
sure we link with libgauche.so in the build tree regardless of
the setting of LD_LIBRARY_PATH. (PR#557)
* apropos now takes a string as well as a symbol (PR#555)
* Character set is now hashable with the default-hash.
* Add .dir-locals.el file in the source tree. It sets up Emacs to
add some Gauche-specific indentations.
* If gosh is run in suid/sgid process, do not load .gaucherc file
and do not load/save history files.
* complete-sexp? is moved to the core (used to be in gauche.listener.
* string->number: Added default-exactness optional argument to
specify the exactness of the result when no exactness prefix is
given in the input.
* gauche-package generate can now generate template of Scheme-only
package.
* srfi-42: Added :collection qualifier to use a collection as a
generator.
* gauche.fcntl: Added sys-open, sys-statvfs, sys-fstatvfs.
* sys-utime: Allow <time> object for timestamp.
* sys-nice: Added nice() interface.
* make-hash-table: If a comparator whose equalily predicate is
eq?/eqv?, we use eq-hash/eqv-hash regardless of comparator's hash
function. It is permitted by srfi-125, and it allows objects that
doesn't have hash method can still be used with eq/eqv based
hashtables (#708).
* gauche.vport: Add bidirectional virtual port. Add
open-output-accumulator.
* gauche.process: Allow command pipeline in process port API (#717).
Also :error keyword argument accepts :merge, to tell run-process
that stderr should be merged into stdout.
* gauche.process: Added process-wait/poll, process-shutdown.
* gauche.threads: atomic-update!: Allow proc to return more values
than the atom holds. It is useful if one wants to update atom
state and compute something using before-update values.
* gosh: -e option can accept multiple S-expressions.
* gauche.dictionary: Add <stacked-map>.
Bug fixes
* Fix double-rounding bug when converting ratnum to flonum.
Originall reported in Ruby, it is a common issue that first
convert numerator and denominator to double and then divide.
(blog entry).
* math.mt-random: (Incompatible change) When the given seed is
bignum, we use all bits now to initialize the RNG. The previous
versions only used the lowest word, but that loses the entropy.
Technically this causes RNG to produce different sequence if the
seed is bignum. For typical usage, though, seed is within fixnum
or at most as wide as a machine word and we think it's rare that
the change becomes an issue.
* Some macro-defining-macro issues are fixed, including #532 .
* file.util: make-directory*: Fixed timing hazard.
* www.css: construct-css: Fix :not pseudo class rendering (PR#645),
added missing an+b syntax (PR#648).
* gauche.process: High-level utilities didn't handle :encoding
keyword argument (#651).
* load-from-port: Fixed a bug that didn't reset literal reader
context (#292).
* apply detects if the argument list is circular and throws an error.
* copy-list detects the circular list and throws an error.
* scheme.list: lset=: Argument order to invoke the equality
predicate was incorrect.
* math.prime: native-factorize: Reject other than positive exact
integers. Factorizing 1 returns ().
* assume: Fix to return the value of the expression.
* and-let*: Fix 20-year old bug - and-let* is allowed to take an
empty body.
* let-optionals*: There was a bug that inserts reference of
undefined hygienically, causing an error when used in R7RS code
that doesn't inherit gauche module.
* rfc.json: construct-json: Allow non-aggregate toplevel value. It
was prohibited in rfc4627, but allowed in rfc7159.
* pprint: Fix circular structure printing in case when the cycle
begins in the middle of a list (#713).
== Release 0.9.9
Bug fix and enhancements
* New features
- More R7RS-large and SRFI support
- Charset enhancements to Full Unicode range
- Macro tracer
- Checking use of undefined result in conditionals
* Improvements
* Bug fixes
* Potential incompatibilities
New features
More R7RS-large and SRFI support
* scheme.stream: Streams (formerly srfi-41).
* scheme.ephemeron: Ephemeron (formerly srfi-124).
* scheme.regex: Scheme Regular Expression (formerly srfi-125).
Contributed from @pclouds. Grapheme support is still missing.
* scheme.vector.u8 etc.: Homogeneous numeric vector libraries
(srfi-160).
* srfi-162: Comparators sublibrary.
* srfi-173: Hooks.
Charset enhancements to Full Unicode range
* Predefined char-sets (srfi-14) are enhanced to the entire Unicode
range, e.g. char-set:digit now includes all Unicode characters
with general category Nd. If you want to limit the range to ASCII,
there are corresponding char sets (e.g. char-set:ascii-digit)
provided.
* 'Umbrella' general category char-set: char-set:L includes
characters from general categories that begin with L, etc.
* In regexps and char-set literals, you can use \p{category} and
\P{category}, where category is Unicode general category, e.g. Lu.
* The \d, \w, \s in regexp and char-sets are still limited to ASCII
range, for changing them would likely to break existing code.
* POSIX notation [:alpha:] etc., also covers ASCII range only. To
cover full Unicode, you can use [:ALPHA:] etc.
Macro tracer
* trace-macro: You can now trace macro expansion.
Checking use of undefined result in conditionals
* Return value of procedures that return "undefined result"
shouldn't be used in portable code. However, Gauche usually
returns #<undef> from such procedures, and it counts to true as
a boolean test in conditionals. We found quite a few code that
branches based on the result of undefined return value. Such code
is fragile, for it may break with unintentional change of return
values of such procedures. Gauche can now warn such cases when
the environment variable GAUCHE_CHECK_UNDEFINED_TEST is set. See
the blog entry and Undefined values.
Improvements
* Partial continuation support is overhauled w.r.t interaction with
dynamic environment and full continuations. Contributed by
@Hamayama.
* gauche.uvector: Support uniform complex vectors (c32, c64 and c128).
* gauche.test: New compile-only option to test-script, so that it
can perform syntax check without executing the actual script
(useful if the script is written without using main).
* gauche.generator: Add negative step value support to grange.
* regexp-replace etc.: It used to be an error when regexp matches
zero-length string. Which wasn't wrong, but in practice it was
annoyance. Now if regexp matches zero-length string we advance
one character and repeat matching. This behavior is also adopted
by Perl and Ruby.
* gosh -h now emits help messages to stdout and exits with 0.
* Experimental line editor: backward-word and forward-word added by
@pclouds PR#524
Bug fixes
* Keyword argument handling wasn't hygienic.
* pprint: Prettyprint emits negative labels (#484)
* Extend the limit of environment frame size (#487)
* Scm_CharSetAdd could yield inconsistent result when you add an
ASCII character to a large charset. Patch by @pclouds PR#500
* import: Only/rename import qualifiers didn't work with transitiev
export (#472)
* Some system calls shouldn't be restarted when interrupted. #504
* format: ~vr didn't work. #509
* sort!, stable-sort!: We implemented them as if they were
linear-updating, that is, we didn't guarantee if the argument
still pointed to the head of the sequence after the call.
However, srfi-95 didn't explicitly mentions linear updating
semantics, so we guaranteed that caller can call them purely
for side-effects.
Potential incompatibilities
* Scm_RegExec now takes two more arguments specifying start and
end of the range of input string. I overlooked this change and
missed to add a proper transition macro. You can use #ifdef
SCM_REGEXP_MULTI_LINE to switch the new interface vs the old one.
* Toplevel define now inserts a dummy binding at compile-time
(as a result of #549). It is consistent with the specification,
but existing code that relied on undefined behavior might be
affected. See the blog entry.
* The (scheme base) library inadvertently exported Gauche's define
instead of R7RS define; Gauche's define recognizes extended lambda
arguments, while R7RS's not. This was a bug and fixed now, but
if your R7RS code happens to use Gauche's extended argument
notation, it'll break.
* macroexpand: Now it strips syntactic information from the return
values (with renaming macro-inserted identifiers, so that different
identifiers with the same name won't be confused). This generally
improves interactive use when you check how macros are expanded.
If you're using the output of macroexpand programatically, this
may break hygiene; you can pass an optional argument to preserve
syntactic information.
* parser.peg: This module is still unofficial, but in case you're
using it: $do is now obsoleted. Use $let and $let*. $parameterize
is added by @SaitoAtsushi.
== Release 0.9.8
Bug fixes and enhancements
* Major changes
- The syntax of quasirename is changed
- Keywords are symbols by default.
- Some support of R7RS-Large Tangerine Edition.
- Prettyprinting is now default on REPL.
* Bug fixes
* Other notable changes
Major changes
The syntax of quasirename is changed
The template was implicitly quasiquoted before, but it turned out
it interferes when quasiquote and quasirename were nested. Now the
template needs to be explicitly quasiquoted. The old syntax is also
supported for the backward compatibility. You can change the
supported compatibility level by an environment variable
GAUCHE_QUASIRENAME_MODE. See the manual entry of quasirename and
the blog post for more details.
Keywords are symbols by default.
There can be some corner cases that causes backward compatibility.
You can revert to the old behavior by setting an environment variable
GAUCHE_KEYWORD_DISJOINT. See the "Keyword" section of the manual
for how to adapt to the new way.
Some support of R7RS-Large Tangerine Edition.
We have scheme.mapping, scheme.mapping.hash, scheme.generator,
scheme.division, scheme.bitwise, scheme.fixnum, scheme.flonum. See
Gauche:R7RS-large for which libraries in R7RS-Large have been
supported.
Prettyprinting is now default on REPL.
If it bothers you, set an environment variable GAUCHE_REPL_NO_PPRINT.
Bug fixes
* The identifiers _ and ... are bound to syntax, to be friendly to
hygienic macros.
* floor/ and ceiling/ returned incorrect values when remainder is zero.
* During compilation, feature identifiers are considered according
to the target platform, so that cross compilation work (#407).
* A finite inexact number multiplied by an exact zero now yields an
exact zero consistently.
* Precompiled uniform vectors had lost infinities, NaNs and minus
zeros. Now they are handled properly.
* The record accessor accidentally leaked #<unbound> to the Scheme
world.
Other notable changes
* GC version is bumped to 8.0.4, thanks to @qykth-git.
* Unicode support is bumped to 12.1.0, thanks to @qykth-git (#471).
* Numerous enhancements on Windows/MinGW version, thanks to @Hamayama.
* Now gauche-package compile command has --keep-c-files and --no-line
options, for easier troubleshooting with generated C files (#427).
* gauche.cgen.cise: Enhanced support for C procedure declaration,
C struct and union type definition, and function type notation.
* Default hash function works on uniform vector (#440)
* The gauche.interactive module now doesn't load ~/.gaucherc---that
feature is splitted to gauche/interactive/ init.scm. Thus, when
you start gosh it still reads ~/.gaucherc, but if you use
gauche.interactive as an ordinary module, it doesn't load
.gaucherc (#448).
* gauche.array: New procedures array-negate-elements!,
array-reciprocate-elements!.
* disasm: Now it shows lifted closures as well.
* When the number of arguments passed to apply is fixed at the
compile time, the compiler now optimize apply away. For example,
(apply f 'a '(b c)) now becomes exactly the same as (f 'a 'b 'c).
If this optimization somehow causes a problem, pass
-fnodissolve-apply option to gosh.
* srfi-42: Uniform vectors are supported just like vectors.
* Now we have predefined char-set for each of Unicode general
category, e.g. char-set:Lu.
* New flonum procedures: approx=?, flonum-min-normalized,
fronum-min-denormalized.
* gauche.vport: Virtual port constructors accept :name argument.
== Release 0.9.7
Major C API/ABI overhaul
* Changes of C API/ABI
* New modules and procedures
* Bug fixes and improvements
* Incompatible changes in unofficial module
Changes of C API/ABI
This release includes several C API/ABI changes that breaks the
backward compatibilities, in order to have clean API towards 1.0.
Although we haven't officially defined C API/ABI, we kept the de
facto backward compatible as much as possible. Some turned out to
be design shortcomings. We don't want them to hinder future
developments, so we decided to change them now.
In most cases, all you need to do is to recompile the extensions.
We checked existing extensions being compilable with the new version
as much as possible. If you find an extension breaks, let us know.
See API Changes in 0.9.7 for the details. We bumped ABI version
from 0.9 to 0.97, so the extensions compiled up to 0.9.6 won't be
linked with the new version of Gauche. If necessary, you can install
0.9.6 and 0.9.7 Gauche in parallel, and switch them using -v VERSION
option.
If you're not sure what extensions you've installed, check the
directory ${prefix}/share/gauche-0.9/site/lib/.packages /. It
contains gpd (Gauche Package Description) files of the extensions
you've installed for 0.9.6 and before.
New modules and procedures
* srfi-154: First-class dynamic extents
* gauche.connection: An interface that handles connection-based
full-dupex communication channel. The <socket> (gauche.net)
class implements it, as well as a couple of other classes. It
allows to write a communication code (e.g. server request
handlers) without knowing the underlying connection implementation.
* text.edn: Parse and write Clojure's EDN representation.
* compat.chibi-test: A small adapter module to run tests written
for Chibi Scheme (some srfi reference implementations use it)
within gauche.test.
* text.html-lite: HTML5 elements are added. PR#363
* gauche.array: Export array-copy.
* gauche.configure: Add more feature tests: cf-check-lib,
cf-check-libs, cf-check-type, cf-check-types, cf-check-func,
cf-check-funcs, cf-check-decl, cf-check-decls, cf-check-member,
cf-check-members. Also added cf-init-gauche-extension and
cf-output-default, which takes care of common task of Gauche
extensions so that the configure script can now be very terse.
* gauche-package make-tarball is updated to read package.scm. Used
with gauche.configure, this eliminates the need of DIST script
for the extensions.
* file.util: Added call-with-temporary-file,
call-with-temporary-directory.
* assoc-adjoin, assoc-update-in: A couple of new assoc-list procedures.
Bug fixes and improvements
* rfc.tls: If CA bundle path is set, axTLS connection also
validates server certificates (mbedTLS rejects connection
when CA bundle path is not set). PR#362
* rfc.tls: On Windows, you can specify system as CA bundle
path to use the system certificate store. PR#395 , PR#398
* rfc.tls: If Gauche is configured with mbed-tls but without
axtls, the default tls class is set to <mbed-tls>.
* Bumped to bdwgc 7.6.8. PR#373
* Experimentally turned on generic function dispatcher
optimization for ref and object-apply by default. It could
boost the performance of these generic function calls up to
5x. We keep monitoring the effect of optimization and will
enhance it in future.
* Now glob sorts the result by default (consistent of glob(3).
To avoid sorting, or supply alternative sort procedure, use
:sorter argument.
* REPL's info uses the value of the PAGER environemnt variable
for paging. Now you can put command-line arguments in it (not
only the command name). PR#358
* REPL's info failed to work when Gauche is built without zlib
support.
* sxml.serializer: If the attribute value is the same as attribute
name, we took it as a boolean attribute and just rendered with
attribute name only. It interferes with an attribute with the
value that happens to be the same as the name, so we changed it.
This is backward-compatible change. PR#359
* sxml.ssax: Fix whitespace handling. PR#360
* We had a kludge to handle a setter of a slot accessor method,
that causes confusion when you use the module that implements a
base class then define slot accessor in the derived class. It
is fixed. See the thread
https://sourceforge.net/p/gauche/mailman/message/36363814/
for the details.
* Now we handle utf-8 source file that has BOM at the beginning.
* open-input-file, open-output-file, etc.: We now honor element-type
keyword arguments (it was ignored before). It only makes
difference on Windows.
* scheme.set: Fix set<? etc.
* util.digest: digest-hexify can now take u8vector as well.
* A bug in hash-table-copy caused inconsistent hash table state. #400
Incompatible changes in unofficial module
* parser.peg: Removed pre-defined character parsers (anychar,
upper, lower, letter, alphanum, digit, hexdigit, newline, tab,
space, spaces, and eof) and shorthands ($s, $c, and $y). Those
names are easy to conflict (esp. 'newline') yet not so much
useful, for it's quite easy to define. If existing code relies
on these procedures, say (use parser.peg.deprecated).
pkglint -r --network --only "migrate"
As a side-effect of migrating the homepages, pkglint also fixed a few
indentations in unrelated lines. These and the new homepages have been
checked manually.
* Use gmake for pattern rules
Changelog:
Release 0.9.6
Major feature upgrade
* Notable feature enhancement:
* New modules and procedures
+ R7RS-Large Red Edition support (WiLiKi:Gauche:R7RS-RedEdition)
+ New srfi support:
+ Other new modules and procedures:
* Incompatible changes
* Other bug fixes
Notable feature enhancement:
* Static linking and standalone executable support: Now you can create a
standalone executable from Gauche program. See blog entry and "Building
standalone executables" section.
* Single shell-script installer (blog entry).
* REPL enhancement: Pretty printing (blog entry), online document display (
blog entry) and search (blog entry).
* Method dispatch optimizations (1, 2).
* Procedure inlining optimizations (1, 2)
* Windows console Japanese handling: Thanks to @hamayama, numerous fixes to
use Japanese on Windows command prompt is incorporated.
* Bump to Boehm gc 7.6.6, thanks to @qykth-git.
* Support mbedTLS as an additional TLS support, thanks to @qykth-git. See
rfc.tls for the details.
* format finally supports floating number formatting ~f. It also supports a
subtle rounding mode switch regarding binary to decimal conversion (blog
post).
* Support of using multiple versions of Gauche in parallel---from 0.9.6 and
after, you can invoke a different version of Gauche by gosh -vVERSION, as
far as VERSION of Gauche is also installed. This isn't much useful now
(VERSION must be 0.9.6 or later), but will be handy with future releases.
* Sampling profiler now works on Windows, thanks to Saito Atsushi and
@hamayama (although it can only sample the attached thread).
New modules and procedures
R7RS-Large Red Edition support (WiLiKi:Gauche:R7RS-RedEdition)
12 libraries (out of 17) are supported:
* scheme.list List library (formerly srfi-1)
* scheme.vector Vector library (formerly srfi-133)
* scheme.sort Sort libraries (formerly srfi-132)
* scheme.set Sets and bags (formerly srfi-113)
* scheme.charset Character-set library (formerly srfi-14)
* scheme.hash-table Intermediate hash tables (formerly srfi-125)
* scheme.ideque Immutable deques (formerly srfi-134
* scheme.generator Generators (formerly srfi-121)
* scheme.lseq Lazy sequences (formerly srfi-127)
* scheme.box Boxes (formerly srfi-111)
* scheme.list-queue Mutable queues (formerly srfi-117)
* scheme.comparator Comparators (formerly srfi-128)
Those are still accessible as srfi-* names, but new code is recommended to use
the scheme.* names.
New srfi support:
* srfi-64 A Scheme API for test suites
* srfi-66 Octet vectors
* srfi-74 Octet-addressed binary blocks
* srfi-96 SLIB prerequisites
* srfi-129 Titlecase procedures
* srfi-141 Integer division
* srfi-143 Fixnums
* srfi-145 Assumptions (built-in)
* srfi-146 Mappings
+ srfi-146.hash Hashmaps
* srfi-149 Basic Syntax-rules template extensions (built-in)
* srfi-151 Bitwise operations
* srfi-152 String library (reduced)
* srfi-158 Generators and accumulators
Other new modules and procedures:
* pprint - pretty printer.
* assume-type macro and type-error procedure.
* define-inline is now official.
* hash-table-compare-as-sets, tree-map-compare-as-sets - compare those
mappings as sets
* let-values, let*-values: now built-in.
* In gauche.process: do-process!, do-pipeline, run-pipeline!.
* In gauche.unicode: char-east-asian-width
* In gauche.uvector: uvector-binary-search, u8vector=? ..., u8vector-compare
....
* In gauche.charconv: Conversion routines accepts u8vector as well as
strings.
* In gauche.sequence: delete-neighbor-dups, delete-neighbor-dups!,
delete-neighbor-dups-squeeze!, group-contiguous-sequence
* In gauche.threads: atomic and atomic-update! allows more than one timeout
values.
* text.template: Simple template expander, based on built-in string
interpolation feature.
* Char-set can be immutable. char-set-freeze and char-set-freeze! are used to
make a char set immutable. Literal char-sets are immutable, as other
literal objects.
* rfc.http: You can now use stunnel process to do https connection instead of
Gauche's rfc.tls module. Note that it only works with command mode of
stunnel---which isn't available on Windows.
* rfc.tls: Now that we support mbedTLS and server certificate authentication,
a minimal document is added.
* binary.io: get-uint, get-sint, put-uint!, put-sint!.
* gauche.generator: generator->uvector, generator->uvector!, generator->
bytevector, generator->bytevector!.
* data.random: regular-string$ - creates a generator that generates random
strings that match the given regexp.
* string-incomplete->complete: Add :escape mode to escape illegal bytes in
lossless way.
Incompatible changes
Some change undocumented behaviors; others change because of bug fix.
* Literal character sets (#[chars]) are now immutable, as other literal
objects; it will raise an error if you try to mutate it.
* getter-with-setter now associates the setter to the getter in immutable way
('locked'); it will raise an error if you try to change it. It is the way
specified in srfi-17. It also allows Gauche to inline setters. (NB: Many
predefined setters are now locked. If your existing code alters them it
will cause an error.)
* list*, cons* - Requires at least one arg, as specified in srfi-1. Zero
argument doesn't make sense, although previous versions of Gauche allowed
it.
* append, append! - Now it is an error if the arguments except the last one
is a dotted list. We've tolerated it before, but it's rather error prone.
* util.match: The way to match record instance with positional variables are
changed for more reasonable way. We hope no code depends on the previous
way, which was broken anyway. See the blog entry for the details.
* twos-complement-factor: We fix the behavior when 0 is passed; it used to
return 0, now it returns -1. The latter is consistent with srfi-60.
Unfortunately we documented the former behavior, so it breaks
compatibility.
* string-split: Splitting an empty string now yields an empty list instead of
(""), as srfi-152 specifies
Other bug fixes
There are too many; we list up some notable ones.
* The behavior of guard when no clauses are satisfied and the exception is
reraised is now R7RS-compatible ( https://github.com/shirok/Gauche/pull/335
). When using R7RS, with-exception-handler is R7RS compatible (which is
slightly different from built-in with-exception-handler, compatible to
srfi-18).
* unwind-protect: Fix bug with interaction of call/cc.
* rfc.tls: axTLS interface had MT-hazard.
* er-macro-transformer: Fix hygienity issue ( https://github.com/shirok/
Gauche/issues/250 )
Release Notes:
Better R7RS conformance
* Keyword-symbol integration: Gauche keywords (e.g. :key) can be symbols
that are automatically bound to itself. It breaks the backward
compatibility in some corner cases, however, so we haven't make the
change in effect by default in 0.9.5. Setting the environment variable
GAUCHE_KEYWORD_IS_SYMBOL turns on this feature. See Keywords, for the
details. We urge you to test your code with this feature turned on,
for pretty soon (probably in the next release) we'll make this feature
effective by default.
* R7RS raise is now conformant of R7RS (which is slightly different from
Gauche's builtin raise, which is srfi-18 conformant).
New modules and procedures
* Renamed modules (old names are still valid, but new code should use
the new names):
+ Data structure implementations are now named data.*; so
util.queue, util.sparse, util.trie are renamed to data.queue,
data.sparse, data.trie.
+ Module text.unicode is renamed to gauche.unicode, for it's
essential for R7RS support.
* New modules:
+ data.cache - Cache
+ data.heap - Heap
+ data.ring-buffer - Ring buffer
+ data.imap - Immutable map
+ data.ideque - Immutable deque
+ text.console: Simple console control module, works on both
vt100-ish terminals and Windows console. Try examples/snake.scm to
see it in action.
+ util.dominator - Find a dominator tree of a directed graph.
+ util.levenshtein - Calculate various edit-dinstances.
+ util.unification - Unification algorithm.
* Low-level hygienic macro support by er-macro-transformer.
* New builtin macros and procedures:
+ and-let1.
+ macroexpand-all - Expands everything in the given form.
+ sys-available-processors - query # of processor cores at runtime.
+ symbol-append.
+ sys-getgroups, sys-mkdtemp.
+ debug-label - Get unique label of an object.
+ length<?, length>?, length>=?, length=? - We had length<=?, so why
not?
+ encode-float, inverse of decode-float.
* In gauche.uvector:
+ New procedures:string->u32vector!, string->s32vector!,
make-uvector, port->uvector
+ Generic accessor and mutator uvector-ref, uvector-set!.
* In gauche.sequence:
+ New searching procedures - sequence-contains,
break-list-by-sequence, break-list-by-sequence!, sequence->
kmp-stepper.
+ New utilities - common-prefix, common-prefix-io.
* In gauche.array: Add constructors u8array, etc., for the consistency.
* In gauche.lazy: lappend-map
* In gauche.generator: gflatten, uvector->generator.
* In gauche.process:
+ run-process-pipeline - for easier pipelining.
+ shell-tokenize-string.
* In gauche.termios: sys-termios-copy
* In gauche.test:
+ test-none-of - As an expected value.
+ test-script - To test script files.
* In gauche.vport: List ports are added. See open-input-char-list,
open-input-byte-list.
* In data.queue: mtqueue-num-waiting-readers.
* In data.trie: trie-longest-match.
* In data.random: samples$, for random sampling.
* In text.csv: Middle-layer procedures: csv-rows->tuples,
make-csv-header-parser, make-csv-record-parser.
* In rfc.uri: uri-ref to access components of uri conveniently.
* In rfc.http: http-status-code->description.
Added srfi supports
* srfi-69: Basic hash tables
* srfi-111: Boxes
* srfi-112: Environment inquiry
* srfi-113: Sets and Bags
* srfi-114: Comparators
* srfi-117: Mutable queues
* srfi-118: Simple adjustable-size strings
* srfi-121: Generators - Covered by gauche.generator.
* srfi-128: Comparators (reduced) - the comparator is actually built-in
to Gauche's core, so that other built-in mechanism such as hashtables,
treemaps, sort, etc. can take comparators.
* srfi-131: ERR5RS Record Syntax (reduced) - Subset of gauche.record.
* srfi-133: Vector library
* srfi-134: Immutable deques - Covered by data.ideque.
More pleasant interactive experience
* Better error message while loading/compiling, using <mixin-condition>
mechanism. Details.
* Improved describe.
* Toplevel REPL commands. See blog entry, or see the manual section
"Working in REPL"
* Scheme-defined procedures maintain source code and source location. It
can be queried by source-code and source-location. The source location
is also shown by describe. (Source code isn't kept for precompiled
Scheme code for now.)
* Online REPL document (info procedure, or ,info/,doc toplevel command)
now shows just the named entry.
* Experimental support of line-editing. If the environment variable
GAUCHE_READ_EDIT is set and the terminal is capable, you can use line
editing (with emacs-like key binding). This feature still in early
development stage and has number of known issues---especially,
multiline edit only partially work. If you're brave, give it a shot,
but don't blame me if your REPL explodes.
* You can invoke editor from repl by (ed file-or-procedure) (see ed). If
the source location is known, you can directly jump to the source of
the procedure, edit, and reload it.
* Now REPL consumes the trailing newline of input S-expr; that is, when
you type (read-line) on REPL, it waits for your input. Before, REPL
didn't consume the trailing newline, so (read-line) immediately
returned when it sees the newline character left in the input buffer,
but that confused users.
* use, select-module, export, import - Now these forms evaluate to zero
values instead of #<undef>, for less cluttering of REPL.
Other notable improvements
* gauche.configure: More feature tests on compilers and linking. Start
using package.scm for the source of package metainformation.
* Extended number syntax:
+ You can insert _ in prefixed numeric literal for readability, e.g.
#b1101_1000_0001_1101.
+ Polar notation of numeric literal recognize pi suffix, e.g.
2@0.5pi => 0.0+2.0i.
+ The reader recognizes CL-ish #<radix>r syntax, e.g. #3r121 for 121
on base 3 (which is 16 in decimal).
* Hashtables are now salted, meaning, it uses different hash functions
at least for each invocation of the program, so that it is immune to
the hash collision attack. The hash function is deprecated, replaced
by default-hash, portable-hash and legacy-hash. See the manual entry
for the details.
* sys-sleep, sys-nanosleep: Changed to retry sleep/nanosleep by default
if it is interrupted by as signal.
* A new debug special reader macro: #?,, which can be used as #?,(proc
arg ...). When evaluated, it displays the form (proc arg ...) and each
value of arg, then calls proc with those arguments and displays the
return value(s). Similar to #?= but you can also check the actual
value of arguments. The #?= stub is also improved to show the thread
from which it is displaying.
* gauche.vport: open-output-uvector now takes an option to make the
output buffer extendable.
* load searches .sld suffix as well, as some other R7RS implementations
do.
* Stack trace now works for threads (but you have to call report-error
within guard clauses explicitly, for by default unhandled error is
propagated to the thread that calls thread-join!).
* gauche.uvector: s8vector->string and u8vector->string now take
optional 'terminator' argument, convenient to extract NUL-terminated
string from fixed size buffer.
* gauche.net: More flexible port number selection in make-server-socket
and make-server-sockets.
* data.sparse: Allow default value per vector (a sparse vector returns
its default value when unset element is accessed).
* rfc.http: Handles ipv6-style server address spec, e.g. [::1]:8888.
* file.util: copy-file - Now takes :if-exists and :append keyword
arguments.
* crypt.bcrypt: Update bcrypt implementation and changed the default
from 2a to 2b.
* gauche.termios: Support mintty on MSYS.
* rfc.tls: Add basic server-side certificate support.
Changes that may alter the behavior of existing code
* gauche.generator: gtake - changed optional argument spec to match
srfi-121. Existing code that needs the old behavior can use a new
procedure gtake*.
* If a hygienic macro inserts a fresh toplevel identifier, that
identifier is renamed. E.g. if you say
(define-syntax define-x (syntax-rules () ((_) (define x #t))))
and then
(define-x)
the toplevel x is renamed and can't be referred to from outside. This
is not explicitly specified in R7RS, but renaming is consistent with
hygiene.
* U+180e Mongolian Vowel Separator is no longer treated as a whitespace
character, since Unicode 6.3.0 changed its category from Zs to Cf.
* when, unless - Now they require at least one expr in their body.
* require: Now loads a file into a special module, instead of #<module
gauche>. This may catch an error that was previously ignored. See the
manual entry for the details.
* include, include-ci: Now relative pathnames, including ones that begin
with ./ or ../, are taken relative to the includer file. Before, files
beginning with ./ and ../ are treated specially, just like load. But
it is less useful for include and just increases confusion.
Bug fixes
* Fixed numerous bugs in hygienic macro expander.
* When a module exports an inherited binding from renaming, it wasn't
searched properly.
* util.match: Fixed a bug that doesn't handle match expressions
generated by hygienic macros.
* Make -fcase-fold option affect REPL as well.
* fixnum-width: It returned a number one smaller than the correct value.
* Fixed a number reader bug handling very big or very small exponent.
* srfi-13: Fixed a bug in xsubstring when 'from' argument is negative.
* parameterize: Fixed a bug that failed to restore parameter values in
some edge cases.
The find-prefix infrastructure was required in a pkgviews world where
packages installed from pkgsrc could have different installation
prefixes, and this was a way for a dependency prefix to be determined.
Now that pkgviews has been removed there is no longer any need for the
overhead of this infrastructure. Instead we use BUILDLINK_PREFIX.pkg
for dependencies pulled in via buildlink, or LOCALBASE/PREFIX where the
dependency is coming from pkgsrc.
Provides a reasonable performance win due to the reduction of `pkg_info
-qp` calls, some of which were redundant anyway as they were duplicating
the same information provided by BUILDLINK_PREFIX.pkg.
Release 0.9.4
Major feature upgrade
* R7RS support
* Notable improvements
* A bunch of new procedures and enhancements
* Tons of bug fixes
+ Fixes that may break the compatibility
+ Miscellaneous fixes
R7RS support
Gauche now supports R7RS-small ( http://r7rs.org/ ). It can load R7RS libraries
and execute R7RS scripts seamlessly. (There are minor caveats; see ref:Standard
conformance). See also ref:Library modules - R7RS integration for the details
of how R7RS is integrated.
The backward compatibility to the legacy Gauche code is kept as much as
possible; in short, you can keep using existing Gauche code and write new code
in pretty much the same way.
It's up to you to write code in traditional Gauche way or R7RS way: If you plan
to make the code portable, you may want to stick with R7RS, but if you need to
depend on lots of Gauche-specific libraries, there's not much point to adopt
R7RS structure, for you can't run it in other implementations anyway.
Notable improvements
* REPL is slightly improved: You can access history (ref:Working in REPL).
And describe shows known bindings when called on symbols. The default
writer now do not show shared structures, for it confused newcomers; it
still shows circular structures in srfi:38 notation.
* data.random: Random data generators.
* math.prime module for lazy sequence of primes, testing primality, and prime
factorization.
* srfi-106: Basic socket interface.
* PIPE signal handling is changed. By default, Gauche effectively ignores
SIGPIPE; the system calls will generate EPIPE system-error instead. Since
the signal delivery timing differ in the Scheme world from C world,
handling SIGPIPE reasonably is difficult, while handling system error is
straightforward and synchronous. Note that EPIPE error from stdout and
stderr terminates the process immediately, so that the Gauche script don't
spit error messsages when used in command pipelines and the destination
command exits prematurely. See ref:Handling signals for the details.
* write and display is now R7RS; that is, they won't explode by circular
structures.
* On Windows, system interface functions now properly handles multibyte
filenames, command-line arguments and enviornment variables. Contribution
from SAITO Atsushi.
A bunch of new procedures and enhancements
* New numerical procedures:
+ On rationalization: rationalize, real->rational, continued-fraction;
see Gauche-blog:20120925-rationalize. As a bonus, now converting
flonums to exact number can produce more readable (simple) rational
numbers; see Gauche-blog:20120930-exact.
+ On integer operations: exact-integer? (r7rs) expt-mod, twos-exponent,
twos-exponent-factor,
+ Gamma functions: gamma, lgamma.
+ r7rs division operators floor/, floor-quotient, floor-remainder,
truncate/, truncate-quotient, truncate-remainder.
* expt now returns exact value if possible, even the exponent is non-integer
(but exact rational).
* New list and vector procedures: length<=?, list-set!, vector-map (r7rs),
vector-for-each (r7rs), vector-tabulate.
* New regex procedures: rxmatch-substrings, rxmatch-positions,
rxmatch-named-groups.
+ Also, regex objects now have read-write invariance.
* rfc.json: Now you can customize mappings between json array/object and
Scheme objects. Also parse-json* is added to parse multiple JSON objects
from a single source.
* gauche.generator: New procedures: gconcatenate, gmerge, gbuffer-filter.
* gauche.lazy: New procedure: lconcatenate
* gauche.uvector:
+ u8vector-multi-copy!, u8vector-append (and all other TAG variations).
+ string->u8vector etc.: Added immutable? optional argument to produce
immutable uvector, which avoids copying the string contents. u8vector->
string also avoids copying if the source vector is immutable.
* rfc.http: Support for basic authentication added.
* file.filter: file-filter may leave the destination file untouched if it
won't be changed, by :leave-unchanged option. Also added new procedures:
file-filter-for-each, file-filter-fold, file-filter-map.
* You can now load script from non-regular files (e.g. device files). Useful
for one-liner such as gosh -E... /dev/null.
* Char-set now adopts collection framework, and also they're applicable
object to test membership.
* Trie (util.trie) now adopts dictionary framework.
* make-tree-map accepts single compare argument instead of = and <.
* rfc.hmac: Pick appropriate block size according to the digest algorithm
metaclasses.
* string-split: Accept an optional argument to limit the number of the
result, much like Perl's similar operator.
* command-line (r7rs)
* include and include-ci (r7rs)
* util.sparse: sparse-vector-ref and sparse-table-ref now have generalized
setters.
* symbol=?, boolean=? (r7rs).
* Reader supports #true and #false for r7rs.
* Negative zeros (-0.0) are recognized when it matters.
* generator-find
* cond-expand supports library clause (r7rs).
* text.unicode: utf8->string, string->utf8 (r7rs); string-ci=? etc. that
handles Unicode full case mapping, as required by R7RS.
* dotimes and dolist now supports omission of variable.
* letrec* (r7rs).
* rfc.base64: base64-decode and base64-encode support :url-safe keyword
argument to use url-safe alternative characters.
* syntax-rules: Support r7rs enhancements.
* define-values: Made r7rs compliant.
* sys-errno->symbol, sys-symbol->errno.
* Built-in sort procedures now supports srfi-95. See ref:Comparison and
sorting.
* digit->integer, integer->digit: Extended to handle digit characters other
than [0-9]; Unicode defines a bunch of them.
* gauche.dictionary: Bimap can have default conflict resolution.
* os.windows: Console procedures are enhanced. Contribution from github.com/
Hamayama.
Tons of bug fixes
Fixes that may break the compatibility
* The reader syntax \xNN is now interpreted as R7RS-way by default
(semicolon-terminated, Unicode codepoint). If we don't find the terminating
semicolon, we interpret it as the legacy syntax. However, there are
ambiguous cases that lead to incompatible behavior. You can switch the
reader mode by reader-lexical-mode to make it fully comatiple to the old
Gauche.
* The hash function for char-set behaved poorly, so we changed it. If you
have saved the hash value of char-sets in the previous versions of Gauche,
you need to recalculate them.
* We no longer coerce the result to inexact when dividing an exact numebr by
exact zero; we used to return +inf.0, but that interpretation is no longer
allowed since R6RS. Now it raises an error.
* It is now an error to pass strings containing NUL characters to external
libraries that expects strings. For example, passing "foo.scm\0.exe" to
open-input-file throws an error. Allowing it would make potential security
issue. If you need to pass a byte array that may contain 0, consider using
u8vector instead of strings.
* copy-bit-field: The argument order is switched - Gauche was following the
old SLIB interface, but it was changed during SRFI-60 discussion. We now
comply the new argument order for the portability, and the old code that
uses this procedure need to be changed.
* rfc.uri: Use uppercase for percent-encoding of special chars, as
recommended in RFC3986. Watch out if the code relying on the case of
percent-encoding.
* srfi-13: Switched the argument order of string-filter and string-delete;
they are changed after finalization, to be in sync with srfi:13's reference
implementation. (Usually reference implementation is fixed to match the
spec, but in this case, quite a few Scheme implementations had been using
the reference implementation as it was, and changing it would have broken
existing code.) Fortunately we could support both order so that the
existing code will keep working, but we recommend to change the code to
match the new order if possible.
Miscellaneous fixes
* Fix: thread-terminate! caused SEGV when called on a thread that's not
running.
* Fix: Character reader produced incorrect values in some #\uxxxxx input.
* Fixed incorrect/missing stack traces, contributed from Vitaly Magerya.
* Fixed subtle bugs in conversion between rationals and flonums.
* util.match: Fixed match-define.
* force: Fixed leak, introduced between 0.9.2 and 0.9.3.
* write-ber-integer ignored the port argument.
* gauche.net: On Windows, the socket code had a fd leak.
* text.diff: diff ignored :equal keyword argument.
* rfc.tls: Fixed file descriptor leak.
* rfc.json: Propertly handles surrogate pairs.
* unwind-protect: The cleanup handler wasn't called properly if the process
exits within the body.
Changes are:
+ Bug fixes:
o If DESTDIR was set and the platform didn't have previous Gauche
installed, make install failed saying something like
"libgauche-0.9.so.0.3: cannot open shared object file: No such file
or directory". The order of installation was adjusted to avoid it.
o On FreeBSD, a bug in signal setup routine caused memory corruption.
o every with more than one argument list didn't return the last
return value of the predicate when all the arguments satisfied it,
as specified in srfi-1 (it returned #t instead). It was also the
case in stream-every. Both are fixed.
o On MinGW, info command didn't work.
o On MinGW, when you used non-console version gosh-noconsole.exe and
tried to spawn a child process to communicate via pipes,
gosh-noconsole.exe just died.
+ Improvements:
o New procedure: string-scan-right
o GC is now 7.2b
Here is list of changes:
0.9.3.2:
Fix documentation build problem when configured to use non default
encoding.
0.9.3.1:
Fix build problem on Windows/MinGW.
0.9.3:
* New Features
o Lazy sequences: An efficient and seamless support of mixing lazy
evaluation with ordinary list procedures. Forcing delayed
evaluation is implicit, so you can pass lazy list to normal list
procedures such as car or fold. See the manual entry for the
details and examples.
o gauche.generator: A general utilities for generators, a thunk that
generates a value every time it is called. Lazy sequences are built
on top of generators. See the manual entry for the details.
o Threads are now supported on Windows/MinGW build. It is directly
based on Win32 thread API instead of pthreads; but Scheme-level
semantics are almost the same. The cond-expand conditions are
slightly modified to accomodate both thread models--- see Threads
for the details.
o add-load-path macro now accepts an optional argument to make the
given path relative to the currently loaded file. This is useful to
distribute a script accompanied with library files; for example,
specify (add-load-path "." :relative) in the script makes the
library files searched from the same directory where the script
exists. Then users can just copy the directory to anywhere and run
the script.
o A chained-application macro $: Incorporated the feature which has
been experimented as gauche.experimental.app. This macro allows (f
a b (g c d (h i j))) to be written as ($ f a b $ g c d $ h i j).
Although it is slighly longer, it is sometimes work better with
indentation of deeply nested function calls. See the manual entry
for the full explanation.
o A new gosh option -m module allows the main procedure to be
searched in the specified module instead of the default user
module. This allows a Scheme file to work both as a library module
and an executable scripts (e.g. for running tests or demos); name
the test program main but not export it, and it won't affect
ordinary module users, but you can test the module by using -m
option.
* Incompatibile Changes
o util.queue: Thread-safe queue can now be created with zero
max-length, which is handy as a synchronization device. This is an
incompatible change---previously, specyfing zero to :max-length
means unlimited queue length. (Cf: Queue of zero length
http://blog.practical-scheme.net/gauche/20110107-zero-length-queue ).
o Fixed a regexp bug in treatment of BOL/EOL assertions (^, $) within
the assetion blocks such as (?=...). Regarding BOL/EOL assertions,
these assertion blocks are treated as if they're stand-alone. The
fixed behavior is now compatible with Perl and Oniguruma. The code
that counted on the previous (buggy) behavior may break by this
change.
o Removed gauche.auxsys module. This module contained several
less-used system procedures; now they are in the core. The module
was autoloaded, so not many code should be affected by this change.
Only the code that explicitly refer to this module needs to be
changed.
* Improvements
o Many frequently-used list procedures (all of util.list, and some of
srfi-1) are now included in the core. The module util.list is no
longer needed, although it is kept just for the backward
compatibility. From srfi-1, the following procedures are now in the
core: null-list?, cons*, last, member (extended one), take, drop,
take-right, drop-right, take!, drop-right!, delete, delete!,
delete-duplicates, delete-duplicates!, assoc (extended one),
alist-copy, alist-delete, alist-delete!, any, every, filter,
filter!, remove, remove!, filter-map, fold, fold-right, find,
find-tail, split-at, split-at!, iota.
o New macros and procedures: values->list, fold-left,
regexp-num-groups, regexp-named-groups.
o New procedure applicable? can be used to check object's
applicability finer than procedure?. Related, a special class
<bottom> is added, which behaves as a subtype of any classes.
o Build process is overhauled to allow out-of-source-tree build.
o Regular expression engine is slightly improved. For example, it now
calculates the set of characters that can be a beginning of a part
of regexp, and uses it to skip the input efficiently.
o thread-terminate! now attempts to terminate the target thread
gracefully, and only tries the forceful means when the gracefull
termination fails.
o open-input-file now accepts :encoding #t argument, which tells the
procedure to use a coding-aware port. That is, it can recognize
coding: ... specification in the beginning of the file. Useful to
process source files.
o map is now restart-safe, that is, saving continuations in middle of
mapping and restarting it doesn't affect previous results. This is
required in R6RS.
o Various small improvements in the compiler and VM stack layout.
o gauche.test: test-module now checks the number of arguments given
to the global procedures. This is useful to catch careless
mistakes. In rare cases that you do intend to pass number of
arguments incompatible to the normal usage of the procedures, list
such procedures in :bypass-arity-check keyword argument (It is
possible because of the dynamic nature of the language---methods of
a different signature may be added later, for example).
o gauche.test: test-end has a keyword argument to exit with non-zero
status if test failed. New function test-summary-check exits with
non-zero status when the test record file indicates there have been
failures. Both are useful to propagate test failure to upper levels
such as continuous integration server.
o srfi-42: Support :generator qualifier to allow using generator
procedures in a sense of gauche.generator.
o file.util: touch-file and touch-files takes various keyword
arguments similar to touch(1) command.
o rfc.http: A new parameter http-proxy allows to set the default http
proxy. The https connection now uses a library bundled to Gauche,
no longer requires external stunnel command.
o GC is bumped to bdwgc 7.2-alpha6.
* Bux fixes
o Fixed an incorrect rounding bug when inexact numbers were given to
div and mod.
o Fixed another division bug in /., when both dividend and divisor
are too big to be represented by floating-point numbers.
o In quasiquote expander, unquote and unquote-splicing are recognized
hygienically.
o force is now thread-safe.
o Fixed some MT-hazards in file loading/requiring. Thanks to Kirill
Zorin for tracking those hard-to-find bugs.
o Fixed a bug that made (regexp-compile '(alt)) Bus Error.
o Fixed another regexp bug that didn't handle case-folding match
beyond ASCII range. Patch from OOHASHI Daichi.
o gauche.parameter: Accessing parameters created in unrelated threads
used to raise an error. It was annoying, since such situation could
occur inadvertently when autoload is involved. Now the parameters
work regardless of where they are created.
o rfc.json: Fixed a bug that produced incorrect JSON.
o rfc.http: Fixed the behavior of redirection for 3xx responses. You
can also customize the behavior.
o gauche.threads: Fixed a bug in thread-sleep! when passed an exact
rational number.
o util.stream: stream-count didn't work.
- Replace the HOMEPAGE with the url used in the document
such as README etc.
- Drop minoura@ from MAINTAINER as per his request on twitter.
Brief summary of Gauche 0.9.2:
[New Features]
* Case mapping and character properties are fully supported,
compatible to R6RS and R7RS draft (both based on Unicode
standard). Character-wise case mapping (char-upcase etc.) and
property queries (char-alphabetic?, char-general-category,
etc.) are built-in. Context-aware string case mapping
(string-upcase etc.) is provided in the new text.unicode
module. (Note: srfi-13's string-upcase etc. are unchanged;
they are defined to use simple case mappings.) The text.unicode
module also provides conversion between utf-8/utf-16 and
Unicode codepoints.
* Windows binary distribution is now in MS installer (*.msi)
format, created with WiX. It's safer than the previous *.exe
format created by NSIS, which had a bug that smashes PATH
settings when it is too long.
* A convenient wrapper for atomic execution is added in
gauche.threads. See this intro post.
* Benchmarking utilities resembles to Perl's Benchmark module is
now available in gauche.time. See this post for an
introduction.
* with-lock-file: A long-awaited feature to use lock files
conveniently. It is in file.util module.
* Added full support of srfi-60, integer bitwise operations.
* gauche.cgen: Some API that Gauche uses to generate C code
become public. See the manual for the details.
[Incompatibile Changes]
* control.thread-pool: add-job! now takes timeout argument. If it
is omitted and the job queue is full, add-job! blocks. It is a
change from 0.9.1, in which add-job! returns immediately in
such case. To get the same behavior, pass 0 explicitly to the
timeout argument. The argument order of wait-all is also
changed to take timeout optional argument first. In 0.9.1 it
never timeouts.
* If --enable-multibyte flag is given to ./configure without
explicit encoding, we now assume utf-8. It used to be
euc-jp. This is for the consistency. We don't think this change
affects many, for the document has always been told to give
explicit encoding name for this option.
* The --enable-ipv6 configure option is turned on by default. It
shouldn't cause problems on modern OSes. If you ever get a compile
error in gauche.net module on a platform that lacks modern API,
specify --disable-ipv6 option to ./configure.
* (This is an internal change of undocumented feature. We mention
it just in case if some extension packages depend on this.) In
the initialization code generated by genstub or precomp, it
used to be possible to refer to the current module by mod. Now
you should use Scm_CurrentModule() instead. Also,
gauche.cgen.unit now doesn't include <gauche.h> automatically.
[Improvements]
* The compiler is improved to avoid creating a closure at
execution time when it doesn't close local environment. For
example, (map (^x (* x x)) lis) doesn't create a closure;
instead, the internal lambda is compiled as if it is a
toplevel-defined procedure. (Yeah, it's a simple lambda
lifting. We didn't do it since it could slow down the
compiler. Now the compiler is efficient enough to handle it.)
* Supports zero or multi-argument unquote/unquote-splicing, as
defined in R6RS.
* sys-exec and sys-fork-and-exec now supports :detached keyword
argument to make the child process detached from the parent's
process group.
* Buliltin reverse and reverse! takes optional list-tail
argument.
* A new builtin procedure map* that can deal with dotted list.
* Common Lisp-like ecase macro is added.
* The extended lambda formals (:key, :optional, etc) are now
available in define-method as well.
* New built-in function sys-clearenv, useful to fork subprocess
securely.
* rxmatch-case accepts (else => proc) form, just like case.
* Socket address objects (e.g. <sockaddr-un>) can now be compared
by equal? based on its content. Useful to put them in a
hashtable, for example.
* gauche.uvector: A new procedure uvector-copy! that can copy any
type of uvectors.
* gauche.test: A new test expected result constructor test-one-of
allows to check if the test result matches any one of possible
outcomes.
* control.thread-pool: Now a pool raises <thread-pool-shut-down>
condition if the pool has already be shut down and no longer
accepting new jobs. terminate-all now takes :cancel-queued-jobs
keyword argument to stop the pool immediately, instead of
waiting for all the jobs to be finished. Canceled jobs are
marked as killed . New APIs: thread-pool-results,
thread-pool-shut-down?.
* rfc.json: Allow construct-json to take optional output port for
the consistency.
* rfc.uri: A new procedure uri-merge that can be resolve a
relative uri in regart to a base uri.
* rfc.cookie: Recognize :http-only cookie attribute introduced in
RFC6265.
* Now the tilde `~' expansion of sys-normalize-pathname works on
Windows as well to refer to the current user's home directory;
it tries environment variables heuristically to find it. To
refer to other user's home directory by ~user is still only
available on Unix platforms, though.
* util.combinations: combinations is optimized to handle leaf
cases efficiently.
[Bux fixes]
* Fixed a bug that the number parser hangs when reading
2.2250738585072012e-308.
* Integer multiplication routine had a code that depended on
undefined behavior of C; it worked on gcc but revealed the bug
on clang-llvm.
* Fixed a module bug on the visibility of bindings of extended
modules.
* gauche.parameter: Fixed a couple of bugs on parameter objects.
* Numeric comparison procedures such as < didn't work correctly
when more than four arguments were given. The bug was
introduced by incorrect optimization.
* Fixed bugs in lognot, logand, logior and logxor, which crashed
when non-integer ratinoal numbers are passed.
* port->string, port->string-list: These procedures returned
prematurely when the input contains an illegal byte sequence
for internal encoding. Now they return an incomplete string
instead.
* srfi-1: Some srfi-1 procedures that are built-in were not
exported, causing errors when you wanted to import them
selectively, e.g. (use srfi-1 :only (fold)).
* util.queue: Fixed list->queue to work.
* binary.pack: Fixed a bug that the result may be truncated if
the input contains byte sequences that can be interpreted as
invalid character multibyte sequences.
* srfi-42: Fixed a hygiene bug; the previous versions failed when
only toplevel macros are imported using :only import option.
* rfc.json: Fixed a bug that didn't escape double-quotes in the
string, and didn't handle empty array.
* Coding-aware ports didn't count lines correctly in CR-only or
CRLF line endings.
* Fixed a problem that caused crash after changing metaclasses of
a class metaobject. An additional protection mechanism is in
place in the class metaobject so that it won't be in an
inconsistent state unexpectedly.
* Fixed sys-setenv in which you couldn't omit the overwrite
argument, even if it was described optional.
* Fixed build problem of gauche.net on Solaris.
* Fixed a bug in gauche-package that caused an error when
*load-path* contained a nonexistent path.
* Fixed a bug in string comparison routine that surfaces in a
special architecture.
* The printed output of <time> was incorrect when its value was
negative.
* There was a bug in the reader it reads ().() incorrectly.
* Fixed a bug in format to allow ~* to position after the last
argument.
* Fixed GC compliation problem on OSX Lion.
New in Gauche 0.9.1: Major Feature Enhancements
+ New Features
o Extended formals: Built-in lambda, define etc. can
recognize optional and keyword arguments, a la Common Lisp.
o Enhanced module mechanism: Now you can rename, choose,
or add prefix to the symbols when importing other modules.
o Efficient record types: A new module gauche.record provides
ERR5RS (srfi-99) compatible record types. It is also upper
compatible to srfi-9 records.
o More support for multithreaded applications: Thread-safe
queue is added to util.queue, and thread-pool feature is
provided by the new module control.thread-pool.
Continuations can be passed between threads.
o Partial continuations.
o Enhanced Windows support.
o New module: crypt.bcrypt: A module for Blowfish password hashing.
o New module: srfi-98: portable environment variable lookup support.
o New module: gauche.mop.propagate: Making object composition simpler.
o New module: rfc.json: JSON parsing and construction.
+ Changes
o The directory structure for Gauche installation has changed so
that we can keep binary compatibility for the extension
modules throughout 0.9.x releases.
o Now it is an error to pass a keyword argument that isn't
expected by the callee. It used to be a warning.
o Regular expression re{,M} now means the same as re{0,M},
which is compatible to Oniguruma.
+ Improvements
o The compiler and the runtime got optimized more.
The compiler now knows more about built-in procedures, and tries
compile-time constant folding and/or inlining more aggressively.
For example, sxml.ssax can parse XML document a lot faster.
o ^ can be used in place of lambda, allowing more concise code.
There's also convenience macros ^a, ^b, ... ^z and ^_ as
abbreviations of lambda (a) etc.
o ~ is added for universal accessing operator. (~ x y) is the same
as (ref x y), and (~ x y z) is the same as (ref (ref x y) z),
and so on. It can be used with generalized setter, e.g.
(set! (~ array i) x).
o define-syntax, let-syntax, and letrec-syntax are enhanced so that
they can take a general expression in rhs, as far as it yields
a syntactic transformer.
o gauche.process: I/O redirection handling in run-process becomes
more flexible.
o rfc.http module now supports https connection (unix platforms only).
Currently it relies on an external program (stunnel).
o A new procedure current-load-path allows the program to know
the file name it is being loaded from.
o A new procedure .$ is introduced as an alternative name of compose.
o Regular expressions now got read-write invariance. Some internal
regexp routines are made public, giving users an easy way
to construct and analyze regexp programatically.
o rfc.822: New procedure: rfc822-date->date.
o file.util: The procedure temporary-directory now became a parameter
so that you can switch it when necessary. The default value is taken
from (sys-tmpdir), which determines temporary directory in the
recommended way of the platform; esp., it works on Windows native
platforms. home-directory works on Windows, too.
Procedures null-device and console-device are added to make it easier
to write portable script across Unix and Windows platforms.
o util.queue: New proceduers: any-in-queue, every-in-queue.
o gauche.parseopt: When let-args encounters a command-line option
that doesn't match any spec, it now raises a condition of type
<parseopt-error> instead of <error>. The application can capture
the condition to handle invalid command-line arguments.
o gauche.uvector: New procedure uvector-size to obtain number of octets
actually to be written out when the given uvector is written out
by write-block.
o dbm: A new procedure dbm-type->class allows an application to load
appropriate dbm implementation at runtime. Utility scripts dbm/dump
and dbm/restore are provided for easier backup and migration.
o Procedure slot-pop! is added for the consistency with other
*-push!/pop! API pairs.
o When ref is used for object slot access, it can take default value
in case the slot is unbound.
o Made (set! (ref list k) value) work.
o New procedures delete-keywords, delete-keywords!, tree-map-map,
tree-map-for-each.
o unwind-protect allows multiple handlers, as in CL.
o sqrt now returns an exact number if the argument is exact and
the result can be computed exactly. Also, R6RS's exact-integer-sqrt
is added.
o gauche.parameter: Parameters can be used with generalized set!.
o The default-endian parameter is moved from binary.io module
to the core, so that this parameter controls default endian
of binary I/O in general. For example, read-block! and write-block
of the gauche.uvector module now uses the value of this parameter
as the default. A new procedure native-endian is added to retrieve
the platform's native endianness.
o More R6RS procedures: inexact, exact, real-valued?, rational-valued?,
integer-valued?, div, mod, div0, mod0.
A number of bug fixes.
- patch-ae is removed since the change is included in upstream.
- patch-a[h-k] is removed since the way to handle rpath leak
is changed; now gauche-config is also `relink'ed before installed.
Here is breif list of changes from 0.8.13:
2009/11/22
Gauche 0.9: Major Feature Enhancements
* C API incompatible changes: Several incompatible C API
changes are introduced, which may cause some extension to
fail to compile. See API Changes in 0.9 for the details.
* New features
o New module: rfc.zlib: Zlib compression/decompression.
o New module: rfc.sha: SHA2 support. rfc.sha1 is
superseded by this module.
o New module: util.sparse: Sparse vectors backed up by
space-efficient trie, and hash-tables implemented on
top of sparse vectors. They are memory efficient than
the builtin hash tables when you want to keep tens of
millions of entries.
o Autoprovide: You no longer need 'provide' form for
most of times. If (require "X") successfully loads
X.scm and it doesn't have a provide form, the feature
"X" is automatically provided. See the "Require and
provide" section of the reference for more details.
o Module gauche.test: Improved testing for
exceptions. You can now test whether a specific type
of condition is thrown by giving (test-error
condition-type) as the expected result. See the manual
entry for more details.
o Module rfc.http: Now handles proxy by :proxy keyword
argument. You can also easily compose
application/x-www-form-urlencoded and
multipart/form-data message to send form
parameters. New procedures: http-put and http-delete.
o Module rfc.mime: Added support of composing a MIME
message.
o Module gauche.threads: New procedures: thread-stop!,
thread-cont!, thread-state.
o Module gauche.termios: On Windows native support, this
module provides Windows Console API instead of POSIX
termios API, since emulationg POSIX termios on Windows
is too much. A set of common high-level API that can
be used on both POSIX and Windows are also added.
o Module gauche.dictionary provides a bidirectional map,
<bimap>.
o run-process in module gauche.process, and builtin
sys-exec and sys-fork-and-exec support :directory
keyword argument to specify the working directory of
the executed process.
o Module file.util provides create-directory-tree and
check-directory-tree.
o Module gauche.net provides low-level socket
operations: socket-sendmsg, socket-buildmsg, and
socket-ioctl. Call-with-client-socket takes new
keyword args to specify buffering mode for the socket.
o Module www.cgi: cgi-main switches the buffering mode
of stderr to line, so that the httpd log can record
error messages line-by-line (much less clutter than
before).
* Major fixes and improvements
o Fixed build problem on OSX 10.6 (Snow Leopard).
o Performance is greatly improved on floating point
number arithmetics, optional argument handling of
builtin procedures, and case-lambda.
o Now all whitespace characters defined in R6RS works as
intertoken spaces in the source code.
o A warning message is printed when a thread exits with
an error and no other thread retrieve its status by
thread-join! before the thread is GC-ed. This helps
troubleshooting. Since thread-join! is the only way to
know if the thread exitted by an error, you have
either to call thread-join! to make sure to check the
status, or to write the thread thunk to catch all
errors and handle them properly.
o Anonymous module name is #f now, instead of (somewhat
arbitrarily chosen) |#|.
o Some enhancements on symbols: 'uninterned' symbos are
officially supported (symbols generated by gensym have
been uninterned, but never been documented
officially.) Uninterned symbols are written as
#:symbol a la CommonLisp. Uninterned symbols are not
registered to the internal symbol table, so there's no
worry about name crash. The only way to refer to the
same uninterned symbol from more than one place in the
source code is to use srfi-38 notation (#n= and
#n#). You can create uninterned symbol by
string->uninterned-symbol and check whether a symbol
is interned or not by symbol-intened?. There is also a
new procedure, symbol-sans-prefix.
* Windows support
o Precompiled binary installer for Windows is now
available. Get Gauche-mingw-0.9.exe. It is supported
on Windows NT 3.5 and later (sorry, no support for
Win9x.)
o Precompiled binary does not include thread and gdbm
support (yet). It is compiled to use utf-8 internal
encoding.
o Some Unix-specific system functions are not available,
or have slightly different semantics because they are
emulated via Windows API. If a function is not
available on Windows, the reference manual says
so. Windows version hasn't be used heavily, so expect
bugs.
o Large character set support on Windows Console is
pretty limited. It is recommended to run gosh under
Emacs for interactive use. See WindowsConsole for the
details.
2008/10/6
Gauche 0.8.14: Maintenance release.
* Bug fixes
o In some cases, an argument list passed to apply wasn't
copied.
o On some platforms, signal mask of threads could be
altered inadvertently by exception handling due to the
different behavior of sigsetjmp.
o format now raises an error if there's an incomplete
tilde sequence in the given format string.
o Internal parameter (gauche.parameter) code had a bug
that allocates not enough storage.
o There was a couple of bugs in dynamic-load that could
cause dead lock or leaving internal state
inconsistent.
o Module rfc.http: The 'host' field became inconsistent
when redirection happened.
* R6RS-ish extensions
o R6RS reader directive #!r6rs, #!fold-case and
#!no-fold-case are recognized now. The latter two can
be used to change case-folding mode of the reader in
the middle of the source code. See the manual for the
details.
o New core procedures: finite?, infinite?, nan?, eof-object.
o Two argument version of log: (log z b) is for base-b
logarithm of z.
* Extension-building improvements
o gauche-config script provides --rpath-flag option to
retrieve platform-specific rpath link option
(e.g. "-Wl,--rpath -Wl,").
o gauche-package script accepts --local option to the
'compile' and 'install' command to add local include
paths and local library search paths
conveniently. Basically, gauche-package compile
--local=DIR package.tgz causes -IDIR/include and
-LDIR/lib to be added to the actual compile and link
command lines. To give more than one directory, say
--local=DIR1:DIR2:....
o A stub generator and ahead-of-time compiler (the
facility to pre-compile Scheme code into VM
instruction array as static C data) is integrated,
allowing C and Scheme code to be mixed in the same
source; this feature is not yet documented and the
details are subject to change, but the curious mind
can take a look at ext/dbm/*, which were much simpler
than the previous version.
* Additional improvements, new procedures & macros
o GC is now Boehm GC 7.1.
o Large part of VM code is rewritten for better
performance and maintainability.
o New procedure: hash-table-copy.
o New convenience macros: rlet1 and if-let1.
o You can now hook exit operation by the exit-handler
parameter. See the "Program termination" section of
the manual for the detailed description of this
feature.
o Made sys-lstat work like sys-stat on Windows platform;
one less headache to write cross-platform code.
o Module gauche.net: Constants SHUT_RD, SHUT_WR and
SHUT_RDWR are defined to pass to socket-shutdown.
o Module file.util: New convenience procedures:
copy-directory*, touch-files, remove-files,
delete-files.
o Module dbm.*: Renamed dbm-rename to dbm-move for the
consistency. (The old name is kept as alias for the
backward compatibility). Added dbm-copy and dbm-move
missing from dbm.fsdbm. Also properly detects
variations of suffixes of ndbm-compatible database at
configuration time.
o Module www.cgi: :mode option is added to the MIME part
handler passed to get-mime-parts to specify the
permissions of the saved file.
o Module rfc.ip: New procedure: ipv4-global-address?.
pkgsrc changes
- DESTDIR support
- use libtool
- make iconv work
- fix a PLIST error
- close PR pkg/37897
Upstream changes
- Sorry, too many to list here
Important changes excerpted from web pages:
2007/1/17
Gauche 0.8.9: Major maintenance release
+ Bug fixes
+ Miscellaneous improvements:
2006/11/18
Gauche 0.8.8 important patch: There is a bug in main.c that makes gosh
exits silently without reporting errors when a Scheme script raised an
unhandled error. Please apply the patch shown in the following message:
http://sourceforge.net/mailarchive/forum.php?thread_id=30949517&forum_id=
2043
2006/11/11
Gauche 0.8.8: Major maintenance release
+ Important Changes:
o Exact rational number is supported; now you get 1/3 from (/ 1 3).
To obtain inexact number from division of two exact numbers, you
have to use exact->inexact explicitly. With this change you can get
more exact result, but if your code has relied on the old Gauche
behavior that automatically converts rationals to inexact reals,
your code may run very slowly in this release of Gauche (since
exact rational arithmetic is much slower than flonum arithmetic).
For the smooth transition, a compatibility module compat.norational
is provided, which makes the / operator behaves like before. See
the manual entry for the details.
o The reader is more strict about utf-8 encoding. Consequently, some
source files in other encoding that happened to be accepted by
previous versions of Gauche may no longer work. If you get an
error, either convert the encoding of the source, or use "coding:"
magic comment (See "Multibyte scripts" section of the reference
manual).
o The test-module routine in gauche.test is fixed so that it detects
more references to undefined global variables that have been
overlooked. You may get an error something like "symbols referenced
but not defined: ...". In most cases, they are from typos. See the
manual entry of gauche.test - Unit testing for the details.
o New modules:
# sxml.serializer: Generic routine to convert SXML to other
formats like XML or HTML. Written by Dmitry Lizorkin and ported
to Gauche by Leonardo Boiko.
# util.trie: Implementation of Trie. Originally by OOHASHI
Daichi, and hacked by numerous Gauche hackers.
# util.rbtree: Implementation of Red-Black Tree. Written by Rui
Ueyama.
o A bug in port locking routine, that caused a race condition on
multiprocessor machine, is fixed. As a side effect, port lock
operation became a bit faster.
o C API prospected change: Scm_Eval, Scm_EvalCString, and Scm_Apply
will have different API in the next release. The current API is
kept under a different name, Scm_EvalRec, Scm_EvalCStringRec, and
Scm_ApplyRec. If you are using those functions, please make changes
until the next release.
+ Miscellaneous fixes and improvements:
2006/4/12
Gauche 0.8.7: Major maintenance release
+ Bug fixes:
+ Improvements:
iconv and gdbm. We now patch Makefile.in instead of the configure
script and just pass in thr rpath flags via environment variables.
* Honor PKGINFODIR.
makeinfo if no native makeinfo executable exists. Honor TEXINFO_REQD
when determining whether the native makeinfo can be used.
* Remove USE_MAKEINFO and replace it with USE_TOOLS+=makeinfo.
* Get rid of all the "split" argument deduction for makeinfo since
the PLIST module already handles varying numbers of split info files
correctly.
NOTE: Platforms that have "makeinfo" in the base system should check
that the makeinfo entries of pkgsrc/mk/tools.${OPSYS}.mk are
correct.
From this release we don't use external Boehm GC library because
gauche needs GC to be built with special compilation options.
New features in 0.8.6:
* New modules:
+ dbi: Database independent access layer, providing unified
access to various relational databases. You need separate
"driver" packages to access the actual RDBMS. There are a
few driver packages available at
http://www.kahua.org/cgi-bin/kahua.fcgi/kahua-web/show/dev/DBI/.
Note: If you have been using the separate dbi module, make
sure you remove it before using the new dbi and dbd
modules. You can find the old dbi.scm under somewhere like
/usr/local/share/gauche/site/lib (the actualy directory
depends on the configuration when you've installed the dbi
module).
+ util.relation: A framework to work with relations (as defined
by Codd). The result of database access via dbi is represened as
a relation.
+ text.sql: SQL parser/constructor. Full features are not
implemented yet, but used in dbi module for prepared queries.
* New SRFIs:
+ SRFI-40 (Library of streams) as util.stream.
+ SRFI-43 (vector library) as srfi-43.
+ SRFI-45 (Primitives for Expressing Iterative Lazy
Algorithms) : built-in.
* New built-in proceduers global-variable-bound? and
glboal-variable-ref. The former supersedes symbol-bound? (
symbol-bound? is now deprecated and will go away in the future
releases. Code that uses symbol-bound? should change it to
global-variable-bound?. ). The latter removes some need of using
eval just to peek the value of the global variable.
* New regexp procedures: regexp-replace*, regexp-replace-all*,
regexp-case-fold?.
* Stack overflow handling is largely improved. You can see better
performance if your script frequently oveflows the stack.
0.8.5 was a maintainance release.
0.8.4:
Gauche 0.8.4:
The compiler and VM have been rewritten. Now Gauche runs faster with
less memory (as fast as 1.9x, or cosumes 0.7x memory, in best cases of
our tests. But your mileage may vary.) The compiler now does simple
closure optimization, so the typical loop-by-local-closure style code
will get the advantage. On the other hand, you won't see much gain in
OO-heavy or library-heavy programs.
Other changes:
* New features:
+ srfi-42 (Eager comprehension) is supported.
+ srfi-55 (require-extension) is supported.
+ A simple sampling profiler is implemented to help tuning
programs. Check out "Profiling and tuning" section of the
reference manual. The profiler may not be available on all
platforms.
+ We provide an experimenal Windows/MinGW binary package for
the convenience. See download page.
2004/12/2
Gauche 0.8.3: Bug fix release
It turned out that 0.8.2's source-code encoding detection feature had a
bug; if you're using Windows-style (CRLF) line-separator, the coding-aware
port repeats one character at the beginning of the second line. It doesn't
do any harm if first few lines of your code are comments, but it's annoying
when you stumbled on it, so I decided to release a fixed version.
This release also includes a couple of improvements: The coding-aware ports
recognizes Emacs-style coding name (e.g. euc-jp-unix) and just ignores the
Emacs-specific suffix (e.g. -unix). And external representations of
f32vector and f64vector are now accurate.
2004/11/29
Gauche 0.8.2: Major revision of infrastructure.
* New features
- A condition (exception) system a la srfi-35 and (part of) srfi-36
is supported. Used with guard (srfi-34), now it is possible to
handle exceptions in more comprehensive way. See the "Exception"
section of the manual, which has been rewritten accordingly.
- Source-code encoding detection. Now Gauche recognizes a special
comment like "coding: utf-8" near the beginning of the source file,
and use appropriate conversion to load the source file. See
"Multibyte Script" section of the manual for the details. This
feature alone can be used independently from loading programs, via
coding-aware ports, so the programs that processes Scheme scripts
can also recognize the special comments.
- Virtual ports are supported. Virtual ports are the ports whose
behavior can be customized in Scheme. See the description of
gauche.vport module in the manual for the details.
* Improvements
- Updated GC to Boehm GC 6.3. It fixes some GC-related problems on
64bit architectures.
- gauche.fcntl: F_GETOWN and F_SETOWN are supported, if the system
provides them.
- gauche.termios: c_cc field of struct termios is now accessible from
Scheme. (Thanks to Kogule Ryo).
- gauche.uvector: Added string->s8vector! and string->s8vector!.
TAGvector-copy!'s API is changed so that it matches with srfi-13's
string-copy! and srfi-43's vector-copy!.
- Port implementation is cleaned up. Now line count is available not
only for file ports but any ports (as far as it's doing character I
/O). byte-ready? is added for binary I/O polling.
- text.csv: quote character is customizable.
* Bug fixes
- INCOMPATIBLE CHANGE: The previous version's rfc.mime's API was
broken. It couldn't handle MIME part whose message was non-encoded
binary. Now MIME part stream parser is re-implemented using virtual
ports, and the reader argument passed to the MIME part handler is
dropped. www.cgi is also affected if you're using customized
handler for file uploads. See the reference manual for the new API.
- SONAME of the library is now set, if the platform supports it.
- gauche.array: Some functions were not exported, although they were
mentioned in the manual.
- gauche.charconv: Fixed a bug in converting 2nd plane of JIS.
- gauche.regexp: regexp-replace-all looped infinitely for some
patterns. Now it raises an error.
- dbm.fsdbm: It couldn't store binary data.
- rfc.822: rfc822-parse-date returned wrong month number (off by
one).
- util.match: Fixed a bug in quasipattern. The description of
quasipatterns in the reference manual is also revised to explain it
better.
- srfi-19: date->julian-day didn't recognize tz-offset.
- Some bugs in numeric code are fixed.
- let-args had a bug in parameter handling of 'else' clause.
- directory-list: when :filter-add-path? is true, there was a bug
that "." and ".." were included in the results even :children?
argument was true.
- There was a bug that causes an infinite loop during class
redefinition.
- let-keywords*: fixed a bug that corrupts expansion when used in
r5rs macro.
* C API Change
- Class initialization API is overhauled. Scm_InitBuiltinClass is
obsoleted; use Scm_InitStaticClass instead.
- Port structure is changed quite a bit.
- Functions to convert Scheme integers to C integers are revised, to
handle out-of-range error in more flexible way.
- API of Scm_Load, Scm_LoadFromPort and related functions are changed
to support more flags.
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