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update NEWS for 2.0.3

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* NEWS: Update.
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Andy Wingo 2011-10-12 17:12:14 +02:00
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NEWS
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@ -5,6 +5,104 @@ See the end for copying conditions.
Please send Guile bug reports to bug-guile@gnu.org.
Changes in 2.0.3 (since 2.0.2):
* Speed improvements
** Guile has a new optimizer, `peval'.
`Peval' is a partial evaluator that performs constant folding, dead code
elimination, copy propagation, and inlining. By default it runs on
every piece of code that Guile compiles, to fold computations that can
happen at compile-time, so they don't have to happen at runtime.
If we did our job right, the only impact you would see would be your
programs getting faster. But if you notice slowdowns or bloated code,
please send a mail to bug-guile@gnu.org with details.
Thanks to William R. Cook, Oscar Waddell, and Kent Dybvig for inspiring
peval and its implementation.
You can see what peval does on a given piece of code by running the new
`,optimize' REPL meta-command, and comparing it to the output of
`,expand'. See "Compile Commands" in the manual, for more.
** Fewer calls to `stat'.
Guile now stats only the .go file and the .scm file when loading a fresh
compiled file.
* Notable changes
** New module: `(web client)', a simple synchronous web client.
See "Web Client" in the manual, for more.
** Users can now install compiled `.go' files.
See "Installing Site Packages" in the manual.
** Remove Front-Cover and Back-Cover text from the manual.
The manual is still under the GNU Free Documentation License, but no
longer has any invariant sections.
** More helpful `guild help'.
`guild' is Guile's multi-tool, for use in shell scripting. Now it has a
nicer interface for querying the set of existing commands, and getting
help on those commands. Try it out and see!
** New macro: `define-syntax-rule'
`define-syntax-rule' is a shorthand to make a `syntax-rules' macro with
one clause. See "Syntax Rules" in the manual, for more.
** The `,time' REPL meta-command now has more precision.
The output of this command now has microsecond precision, instead of
10-millisecond precision.
** `(ice-9 match)' can now match records.
See "Pattern Matching" in the manual, for more on matching records.
** New module: `(language tree-il debug)'.
This module provides a tree-il verifier. This is useful for people that
generate tree-il, usually as part of a language compiler.
** New functions: `scm_is_exact', `scm_is_inexact'.
These provide a nice C interface for Scheme's `exact?' and `inexact?',
respectively.
* Bugs fixed
See the git log (or the ChangeLog) for more details on these bugs.
** Fix order of importing modules and resolving duplicates handlers.
** Fix a number of bugs involving extended (merged) generics.
** Fix invocation of merge-generics duplicate handler.
** Fix write beyond array end in arrays.c.
** Fix read beyond end of hashtable size array in hashtab.c.
** (web http): Locale-independent parsing and serialization of dates.
** Ensure presence of Host header in HTTP/1.1 requests.
** Fix take-right and drop-right for improper lists.
** Fix leak in get_current_locale().
** Fix recursive define-inlinable expansions.
** Check that srfi-1 procedure arguments are procedures.
** Fix r6rs `map' for multiple returns.
** Fix scm_tmpfile leak on POSIX platforms.
** Fix a couple of leaks (objcode->bytecode, make-boot-program).
** Fix guile-lib back-compatibility for module-stexi-documentation.
** Fix --listen option to allow other ports.
** Fix scm_to_latin1_stringn for substrings.
** Fix compilation of untyped arrays of rank not 1.
** Fix unparse-tree-il of <dynset>.
** Fix reading of #||||#.
Changes in 2.0.2 (since 2.0.1):
* Notable changes