* module/ice-9/boot-9.scm (cond, case): Reimplement using syntax-case,
with improved error messages and support for '=>' within 'case' as
mandated by the R7RS. Add warnings for duplicate case datums and
case datums that cannot be meaningfully compared using 'eqv?'.
* module/system/base/message.scm (%warning-types): Add 'bad-case-datum'
and 'duplicate-case-datum' warning types.
* test-suite/tests/syntax.test (cond, case): Update tests to reflect
improved error reporting. Add tests for '=>' within 'case'.
* test-suite/tests/tree-il.test (partial evaluation): Update tests to
reflect changes in how 'case' is expanded.
* doc/ref/api-control.texi (Conditionals): Document '=>' within 'case'.
This reverts parts of a0919aefee ("i18n:
Use Gnulib's `nl_langinfo' module.").
* module/ice-9/i18n.scm (define-simple-langinfo-mapping): Re-add
`default' parameter, and update users accordingly.
* module/language/tree-il/analyze.scm (format-string-argument-count):
Add support for ~h.
* test-suite/tests/tree-il.test ("warnings")["format"]("~h", "~:h with
locale object", "~:h without locale object"): New tests.
* doc/ref/misc-modules.texi (Formatted Output): Document ~h. Recommend
use of ~h instead of ~:d.
* module/ice-9/format.scm (format): Add support for ~h.
* test-suite/tests/format.test ("~h localized number"): New test prefix.
* test-suite/tests/i18n.test (%american-english-locale-name,
%american-english-locale): New variables.
(under-american-english-locale-or-unresolved): New procedure.
("format ~h"): New test prefix.
* configure.ac: Remove checks for <langinfo.h> and <nl_types.h>, and
`nl_langinfo'.
* libguile/i18n.c: Remove #ifdefs for HAVE_LANGINFO_H, HAVE_NL_TYPES_H,
HAVE_NL_ITEM, and HAVE_LANGINFO_CODESET.
(SCM_VALIDATE_OPTIONAL_LOCALE_COPY): Use `SCM_UNBNDP'.
* m4/gnulib-cache.m4 (gl_MODULES): Add `nl_langinfo'.
* module/ice-9/i18n.scm (define-vector-langinfo-mapping): Remove
`defaults' parameter; assume (provided? 'nl-langinfo) is always true.
Update users accordingly.
(define-simple-langinfo-mapping): Likewise.
(define-monetary-langinfo-mapping): Likewise, but do not assume
LOCAL-ITEM and INTL-ITEM are always defined.
* module/ice-9/boot-9.scm:
* module/ice-9/popen.scm:
* module/ice-9/pretty-print.scm:
* module/ice-9/r4rs.scm:
* module/rnrs/io/ports.scm:
* module/texinfo/string-utils.scm:
* module/web/http.scm:
* module/web/request.scm:
* module/web/response.scm:
* test-suite/vm/run-vm-tests.scm: Make the variable names in Scheme docstrings more
consistent. Replace a few instances of @var with @code when appropriate.
* module/ice-9/local-eval.scm (local-wrap): Fix the (module? e) case, to
reference the expression 'x' instead of the non-existent variable
'exp', as was previously done. Also use quasisyntax instead of
quasiquote, so that the introduced 'lambda' is an identifier instead
of a bare symbol, so that this will work in modules that have rebound
'lambda' to something else.
* test-suite/tests/eval.test (local-eval): Make sure to test both
'local-eval' and 'local-compile' when the specified environment is a
module.
* module/ice-9/psyntax.scm (syntax-type): Return an additional value
that contains the entire form in _all_ cases, including for definition
forms. Previously, the entire form was not returned for definition
forms.
(expand-expr): Add an additional argument that contains the entire
form in _all_ cases, including for definition forms. Use it to
include the entire form in error messages, notably for definitions in
expression context. Include the source location information, which
was previously missing from these errors when the rhs expression was
an atom. Improve the "definition in expression context" error message
to be more comprehensible for Scheme beginners.
(expand-top-sequence, expand, expand-body): Adjust as needed to handle
the additional return value from 'syntax-type' and the additional
argument to 'expand-expr'.
* module/ice-9/psyntax-pp.scm: Regenerate.
* NEWS: Update.
* module/language/tree-il/peval.scm (peval):
* module/language/tree-il/primitives.scm (dynamic-wind): When you make a
gensym that just has to be compared against other gensyms, it will be
unique if the prefix doesn't end in something that can be interpreted
as a number. There's no reason to make that character something
difficult like " ". So change to use a dash in that case.
* module/ice-9/psyntax-pp.scm: Regenerate. More readable now.
* libguile/macros.c (scm_init_macros): Add definition of new
syntax-session-id helper.
* module/ice-9/psyntax.scm: Capture a reference to syntax-session-id at
boot time. Uniquify marks and labels using the session id.
* module/ice-9/boot-9.scm: Shunt syntax-session-id off to (system
syntax) once we finished booting.
* module/ice-9/compile-psyntax.scm: Override syntax-session-id when
remaking psyntax to avoid spurious diffs.
* module/ice-9/psyntax-pp.scm: Regenerate.
* module/ice-9/local-eval.scm: New module (ice-9 local-eval) which
exports `the-environment', `local-eval', and `local-compile'.
* libguile/debug.c (scm_local_eval): New C function that calls the
Scheme implementation of `local-eval' in (ice-9 local-eval).
* libguile/debug.h (scm_local_eval): Add prototype.
* doc/ref/api-evaluation.texi (Local Evaluation): Add documentation.
* test-suite/tests/eval.test (local evaluation): Add tests.
* test-suite/standalone/test-loose-ends.c (test_scm_local_eval):
Add test.
* module/Makefile.am: Add ice-9/local-eval.scm.
Based on a patch by Mark H Weaver <mhw@netris.org>.
* module/language/tree-il/analyze.scm
(format-analysis)[check-simple-format-args]: New procedure. Use it.
Add support for applications of <module-ref>.
* module/system/base/message.scm (%warning-types): Handle the `format
simple-format' warning.
* module/language/scheme/spec.scm (scheme)[make-default-environment]:
Use `simple-format' as the default `format'.
* test-suite/tests/tree-il.test ("warnings")["format"]: Explicitly use
(@ (ice-9 format) format) where needed.
("simple-format"): New test prefix.
* module/ice-9/boot-9.scm:
* module/ice-9/psyntax.scm (syntax-module, syntax-local-binding)
(syntax-locally-bound-identifiers): After boot, move these definitions
to a new (system syntax) module.
* module/ice-9/psyntax-pp.scm: Regenerate.
* doc/ref/api-macros.texi: Add some words about syntax-module and
friends being in (system syntax).
* module/language/tree-il/peval.scm (peval): Fold (values
'singly-valued-expression) to 'singly-valued-expression in contexts
that expect multiple values, in addition to those that expect single
values.
* module/language/tree-il/compile-glil.scm (flatten-lambda-case): Fix
miscompilation of `values' in a push context with RA.
* test-suite/tests/tree-il.test: Add low-level test for this
miscompilation.
* module/ice-9/boot-9.scm (current-filename): Canonicalize the path, so
that the result is independent of the current directory, and so
that `dirname' can traverse up the file system, as in the
add-to-load-path example.
(add-to-path): Remove. The eval-when semantics make this macro too
tricky to explain -- people will start using it on other path-like
things, in lexical contours, whereas it only really makes sense with
load-like paths at the toplevel.
* doc/ref/api-evaluation.texi (Loading): Fix link to load-with-path
docs, and remove add-to-path docs.
* module/ice-9/boot-9.scm (syntax-local-binding): New binding.
* module/ice-9/psyntax.scm: Locally define a fluid that holds the
"transformer environment". with-transformer-environment calls a
procedure with the transformer environment, or raises an error if
called outside the extent of a transformer. Bind
transformer-environment in expand-macro.
(resolve-identifier): Backport this helper from master.
(syntax-local-binding): New procedure to return binding information of
a bound identifier (a lexical, macro, a pattern variable, a displaced
lexical, a global, or some other form).
* module/ice-9/psyntax-pp.scm: Regenerate.
* doc/ref/api-macros.texi (Syntax Transformer Helpers): Add docs for
syntax-local-binding, and syntax-source, and move some other
descriptions to this new section.
* module/language/glil/compile-assembly.scm (scheme-list?): New
predicate, like `list?' but requires that the last cdr must be '(),
not #nil.
(dump-object, dump-constants): Use `list' opcode to create a list only
if it is terminated by '(). If it's terminated by #nil, we must use
the more general `cons' opcode.
* module/ice-9/ftw.scm (errno-if-exception): New macro.
(file-system-fold): Add an `error' parameter. Wrap `opendir' and STAT
calls in `errno-if-exception' and call ERROR when appropriate.
(file-system-tree): Provide an `error' procedure. Return #f when
FILE-NAME is unreadable.
(scandir): Provide an `error' procedure.
* test-suite/tests/ftw.test (%top-builddir): New variable.
(make-file-tree, delete-file-tree): New procedures.
(with-file-tree): New macro.
("file-system-fold"): Update tests to add an `error' procedure.
["ENOENT", "EACCES", "dangling symlink and lstat", "dangling symlink
and stat"]: New tests.
("file-system-tree")["ENOENT"]: New test.
("scandir")["EACCES"]: New test.
* doc/ref/misc-modules.texi (File Tree Walk): Update `file-system-fold'
documentation.
* module/ice-9/psyntax.scm (define-syntax-parameter): New toplevel form.
Will be used to implement syntax parameters, following Barzilay,
Culpepper, and Flatt's 2011 SFP workshop paper, "Keeping it Clean with
syntax-parameterize". Adds a new binding type and definition form.
Conflicts:
module/ice-9/psyntax.scm
