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Update 'NEWS'.

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Mark H Weaver 2013-04-07 17:47:44 -04:00
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259
NEWS
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@ -9,13 +9,30 @@ Changes in 2.0.8 (since 2.0.7):
* TODO
Reorder points in order of importance and make comprehensible
** Reorder points in order of importance and make comprehensible
Assemble thanks
** Document recent improvements to array code
** Possible entries for Bug Fixes
*** Fixes for Mingw (Andy?)
*** Fix for FreeBSD with threads(?)
** Assemble thanks
* Notable changes
** New guile.m4.
** New keyword arguments for procedures that open files
Several procedures that open files now support keyword arguments to
request binary I/O or to specify the character encoding for text files.
It is also now possible to specify whether Guile should scan files for
Emacs-style coding declarations. This scan was done by default in
versions 2.0.0 through 2.0.7, but now must be explicitly requested.
See "File Ports" in the manual for details.
** New guile.m4
The `guile.m4' autoconf macros have been rewritten to use `guild' and
`pkg-config' instead of the deprecated `guile-config' (which itself
@ -25,7 +42,7 @@ There is also a new macro, `GUILE_PKG', which allows packages to select
the version of Guile that they want to compile against. See "Autoconf
Macros" in the manual, for more information.
** Better Windows support.
** Better Windows support
Guile now correctly identifies absolute paths on Windows (MinGW), and
creates files on that platform according to its path conventions. See
@ -41,13 +58,24 @@ definitions for FD_SET, FD_ZERO, and other system interface. Guile
should not be setting these macros in public API, so this interface was
removed on those plaforms (basically only MinGW).
** Gnulib update.
** Numerics improvements
Guile's copy of Gnulib was updated to v0.0-7865-ga828bb2. The following
modules were imported from Gnulib: select, times, pipe-posix, fstat,
getlogin, and poll.
`number->string' now reliably outputs enough digits to produce the same
number when read back in. Previously, it mishandled subnormal numbers
(printing them as "#.#"), and failed to distinguish between some
distinct inexact numbers, e.g. 1.0 and (+ 1.0 (expt 2.0 -52)). These
problems had far-reaching implications, since the compiler uses
`number->string' to serialize numeric constants into .go files.
** New optimizations.
`sqrt' now produces exact rational results when possible, and handles
very large or very small numbers more robustly.
Operations involving exact rationals have been optimized, most notably
`integer-expt' and `expt'.
`exact->inexact' now guarantees correct IEEE rounding.
** New optimizations
There were a number of improvements to the partial evaluator, allowing
complete reduction of forms such as:
@ -60,34 +88,60 @@ complete reduction of forms such as:
(call-with-values (lambda () (values 1 2)) (lambda _ _))
A number (ahem) of numeric operations on have been made faster, among
them GCD and logarithms.
`string-join' now handles huge lists efficiently.
`get-bytevector-some' is much faster.
Finally, `array-ref', `array-set!' on arrays of rank 1 or 2 is now
faster, because it avoids building a rest list. Similarly, the
one-argument case of `array-for-each' and `array-map!' has been
optimized, and `array-copy!' and `array-fill!' are faster.
** `include' resolves relative file names relative to including file.
** Gnulib update
Guile's copy of Gnulib was updated to v0.0-7865-ga828bb2. The following
modules were imported from Gnulib: select, times, pipe-posix, fstat,
getlogin, poll, and c-strcase.
** `include' resolves relative file names relative to including file
Given a relative file name, `include' will look for it relative to the
directory of the including file. This harmonizes the behavior of
`include' with that of `load'.
** SLIB compatibility restored.
** SLIB compatibility restored
Guile 2.0.8 is now compatible with SLIB. You will have to use a
development version of SLIB, however, until a new version of SLIB is
released.
** Better ,trace REPL command.
** Better ,trace REPL command
Sometimes the ,trace output for nested function calls could overflow the
terminal width, which wasn't useful. Now there is a limit to the amount
of space the prefix will take. See the documentation for ",trace" for
more information.
** Update predefined character sets to Unicode 6.2.
** Better docstring syntax supported for `case-lambda'
Docstrings can now be placed immediately after the `case-lambda' or
`case-lambda*' keyword. See "Case-lambda" in the manual.
** `get-bytevector-some' much faster; may read less than possible
`get-bytevector-some' has been made much faster, but may now read less
than possible, in accordance with the R6RS definition.
** SRFI-45 exports `promise?'; promises print more nicely
SRFI-45 now exports a `promise?' procedure that works with its promises,
and its promises print more nicely.
** Improved handling of Unicode byte order marks
See "BOM Handling" in the manual for details.
** Update predefined character sets to Unicode 6.2
** GMP 4.2 or later required
@ -96,17 +150,17 @@ and now requires at least version 4.2 (released in March 2006).
* Manual updates
** Better SXML documentation.
** Better SXML documentation
The documentation for SXML modules was much improved, though there is
still far to go. See "SXML" in manual.
** Style updates.
** Style updates
Use of "iff" was replaced with standard English. Keyword arguments are
now documented consistently, along with their default values.
** An end to the generated-documentation experiment.
** An end to the generated-documentation experiment
When Guile 2.0 imported some modules from Guile-Lib, they came with a
system that generated documentation from docstrings and module
@ -115,19 +169,20 @@ bullet and incorporated these modules into the main text, and will be
improving them manually over time, as is the case with SXML. Help is
appreciated.
** New documentation.
** New documentation
There is now documentation for `scm_array_type', and `scm_array_ref', as
well as for the new `array-length' / 'scm_c_array_length' /
`scm_array_length' functions. `array-in-bounds?' has better
documentation as well. The `program-arguments-alist' and
`program-lambda-list' functions are now documented. Finally, the GOOPS
class hierarchy diagram has been regenerated for the web and print
output formats.
`program-lambda-list' functions are now documented, as well as `and=>',
`exit', and `quit'. The (system repl server) module is now documented
(see REPL Servers). Finally, the GOOPS class hierarchy diagram has been
regenerated for the web and print output formats.
* New deprecations
** Deprecate generalized vector interface.
** Deprecate generalized vector interface
The generalized vector interface, introduced in 1.8.0, is simply a
redundant, verbose interface to arrays of rank 1. `array-ref' and
@ -136,71 +191,42 @@ similar functions are entirely sufficient. Thus,
`scm_generalized_vector_ref', `scm_generalized_vector_set_x', and
`scm_generalized_vector_to_list' are now deprecated.
** Deprecate SCM_CHAR_CODE_LIMIT and char-code-limit.
** Deprecate SCM_CHAR_CODE_LIMIT and char-code-limit
These constants were defined to 256, which is not the highest codepoint
supported by Guile. Given that they were useless and incorrect, they
have been deprecated.
** Deprecate `http-get*'.
** Deprecate `http-get*'
The new `#:streaming?' argument to `http-get' subsumes the functionality
of `http-get*' (introduced in 2.0.7). Also, the `#:extra-headers'
argument is deprecated in favor of `#:headers'.
** Deprecate (ice-9 mapping).
** Deprecate (ice-9 mapping)
This module, present in Guile since 1996 but never used or documented,
has never worked in Guile 2.0. It has now been deprecated and will be
removed in Guile 2.2.
** Deprecate undocumented array-related C functions.
** Deprecate undocumented array-related C functions
These are `scm_array_fill_int', `scm_ra_eqp', `scm_ra_lessp',
`scm_ra_leqp', `scm_ra_grp', `scm_ra_greqp', `scm_ra_sum',
`scm_ra_product', `scm_ra_difference', `scm_ra_divide', and
`scm_array_identity'.
* New interfaces
** `round-ash', a bit-shifting operator that rounds on right-shift.
** SRFI-41 Streams
See "Bitwise Operations".
See "SRFI-41" in the manual.
** New environment variables: `GUILE_STACK_SIZE', `GUILE_INSTALL_LOCALE'.
** New HTTP client procedures
See "Environment Variables".
** New procedure `sendfile'.
See "File System".
** New procedures for dealing with file names.
See "File System" for documentation on `system-file-name-convention',
`file-name-separator?', `absolute-file-name?', and
`file-name-separator-string'.
** Escape continuations with `call/ec' and `let/ec'
See "Prompt Primitives".
** `array-length', an array's first dimension.
See "Array Procedures".
** `hash-count', for hash tables.
See "Hash Tables".
** New foreign types: `ssize_t', `ptrdiff_t'.
See "Foreign Types".
** New C helpers: `scm_from_ptrdiff_t', `scm_to_ptrdiff_t'.
See "Integers".
See "Web Client" for documentation on the new `http-head', `http-post',
`http-put', `http-delete', `http-trace', and `http-options' procedures,
and also for more options to `http-get'.
** Much more capable `xml->sxml'
@ -209,11 +235,73 @@ parser deals with namespaces, processed entities, doctypes, and literal
strings. Incidentally, `current-ssax-error-port' is now a parameter
object.
** New command-line argument: `--language'.
** New procedures for converting strings to and from bytevectors
See "Representing Strings as Bytes" for documention on the new `(ice-9
iconv)' module and its `bytevector->string' and `string->bytevector'
procedures.
** Escape continuations with `call/ec' and `let/ec'
See "Prompt Primitives".
** New procedures to read all characters from a port
See "Line/Delimited" in the manual for documentation on `read-string'
and `read-string!'.
** New procedure `sendfile'
See "File System".
** New procedure `unget-bytevector'
See "R6RS Binary Input".
** New C helper: `scm_c_bind_keyword_arguments'
See "Keyword Procedures".
** New command-line arguments: `--language' and `-C'
See "Command-line Options" in the manual.
** `current-language' in default environment.
** New environment variables: `GUILE_STACK_SIZE', `GUILE_INSTALL_LOCALE'
See "Environment Variables".
** New procedures for dealing with file names
See "File System" for documentation on `system-file-name-convention',
`file-name-separator?', `absolute-file-name?', and
`file-name-separator-string'.
** `array-length', an array's first dimension
See "Array Procedures".
** `hash-count', for hash tables
See "Hash Tables".
** `round-ash', a bit-shifting operator that rounds on right-shift
See "Bitwise Operations".
** New foreign types: `ssize_t', `ptrdiff_t'
See "Foreign Types".
** New C helpers: `scm_from_ptrdiff_t', `scm_to_ptrdiff_t'
See "Integers".
** Socket option `SO_REUSEPORT' now available from Scheme
If supported on the platform, `SO_REUSEPORT' is now available from
Scheme as well. See "Network Sockets and Communication".
** `current-language' in default environment
Previously defined only in `(system base language)', `current-language'
is now defined in the default environment, and is used to determine the
@ -224,29 +312,12 @@ language for the REPL, and for `compile-and-load'.
See "Parameters", for information on how to convert a fluid to a
parameter.
** New procedures to read all characters from a port
See "Line/Delimited" in the manual for documentation on `read-string'
and `read-string!'.
** New HTTP client procedures.
See "Web Client" for documentation on the new `http-head', `http-post',
`http-put', `http-delete', `http-trace', and `http-options' procedures,
and also for more options to `http-get'.
** New procedures for converting strings to and from bytevectors.
See "Representing Strings as Bytes" for documention on the new `(ice-9
iconv)' module and its `bytevector->string' and `string->bytevector'
procedures.
** New `print' REPL option.
** New `print' REPL option
See "REPL Commands" in the manual for information on the new
user-customizable REPL printer.
** New variable: %site-ccache-dir.
** New variable: %site-ccache-dir
The "Installing Site Packages" and "Build Config" manual sections now
refer to this variable to describe where users should install their
@ -265,12 +336,18 @@ refer to this variable to describe where users should install their
* Bug fixes
** SRFI-37: Fix infinite loop when parsing optional-argument short options
** Fix inexact number printer.
(http://bugs.gnu.org/13757)
** Fix infinite loop when parsing optional-argument short options (SRFI-37).
(http://bugs.gnu.org/13176)
** web: Support non-GMT date headers in the HTTP client
** web: Support non-GMT date headers in the HTTP client.
(http://bugs.gnu.org/13544)
** Avoid stack overflows with `par-map' and nested futures in general
** web: support IP-literal (IPv6 address) in Host header.
** Avoid stack overflows with `par-map' and nested futures in general.
(http://bugs.gnu.org/13188)
** Peek-char no longer consumes EOF.
(http://bugs.gnu.org/12216)
** Avoid swallowing multiple EOFs in R6RS binary-input procedures.
** A fork when multiple threads are running will now print a warning.
** Allow for spurious wakeups from pthread_cond_wait.
(http://bugs.gnu.org/10641)
@ -305,9 +382,13 @@ refer to this variable to describe where users should install their
** Recognize the `x86_64.*-gnux32' triplet.
** Check whether a triplet's OS part specifies an ABI.
** Recognize mips64* as having 32-bit pointers by default.
** Use portable sed constructs.
(http://bugs.gnu.org/14042)
** Remove language/glil/decompile-assembly.scm.
(http://bugs.gnu.org/10622)
** Use O_BINARY in `copy-file', `load-objcode', `mkstemp'.
** Use byte-oriented functions in `get-bytevector*'.
** Fix abort when iconv swallows BOM from UTF-16 or UTF-32 stream.
** Fix compilation of functions with more than 255 local variables.
** Fix `getgroups' for when zero supplementary group IDs exist.
** Allow (define-macro name (lambda ...)).
@ -317,6 +398,8 @@ refer to this variable to describe where users should install their
(http://bugs.gnu.org/13485)
** Fix source annotation bug in psyntax 'expand-body'.
** Ecmascript: Fix conversion to boolean for non-numbers.
** Use case-insensitive comparisons for encoding names.
** Add missing cond-expand feature identifiers.
** A failure to find a module's file does not prevent future loading.
** Many (oop goops save) fixes.
** `http-get': don't shutdown write end of socket.
@ -324,9 +407,9 @@ refer to this variable to describe where users should install their
** Avoid signed integer overflow in scm_product.
** http: read-response-body always returns bytevector or #f, never EOF.
** web: Correctly detect "No route to host" conditions.
** `system*': failure to execvp no longer leaks dangling processes
** `system*': failure to execvp no longer leaks dangling processes.
(http://bugs.gnu.org/13166)
** More sensible case-lambda* dispatch
** More sensible case-lambda* dispatch.
(http://bugs.gnu.org/12929)
** Do not defer expansion of internal define-syntax forms.
(http://bugs.gnu.org/13509)