These changes let the code compile and produce a valid DLL, but the
test hangs. It looks like the hang is in Fdelete_process, when it
closes one of the descriptors of the pipe process.
In addition, this use of the pipe process cannot currently work
on MS-Windows, since make-pipe-process doesn't set up the reader
thread to read from the Emacs's side of the pipe, so the select
emulation doesn't know there's stuff to read from that pipe.
* test/data/emacs-module/mod-test.c [WINDOWSNT]: Include
windows.h.
(ALIGN_STACK) [!__x86_64__]: Define for 32-bit builds.
(sleep_for_half_second): New function.
(write_to_pipe): Declare return type differently for WINDOWSNT.
Call sleep_for_half_second.
(Fmod_test_async_pipe) [WINDOWSNT]: Use _beginthread as substitute
for pthread_create.
(invalid_finalizer): Replace non_ASCII character in a comment.
* test/src/emacs-module-tests.el (module/async-pipe): Skip on
MS-Windows, as the test fails and then hangs.
A common complaint about the module API is that modules can't
communicate asynchronously with Emacs. While it isn't possible to
call arbitrary Emacs functions asynchronously, writing to a pipe
should always be fine and is a pretty low-hanging fruit.
This patch implements a function that adapts an existing pipe
process. That way, users can use familiar tools like process filters
or 'accept-process-output'.
* src/module-env-28.h: Add 'open_channel' module function.
* src/emacs-module.c (module_open_channel): Provide definition for
'open_channel'.
(initialize_environment): Use it.
* src/process.c (open_channel_for_module): New helper function.
(syms_of_process): Define necessary symbol.
* test/src/emacs-module-tests.el (module/async-pipe): New unit test.
* test/data/emacs-module/mod-test.c (signal_system_error): New helper
function.
(signal_errno): Use it.
(write_to_pipe): New function running in the background.
(Fmod_test_async_pipe): New test module function.
(emacs_module_init): Export it.
* doc/lispref/internals.texi (Module Misc): Document new module
function.
* doc/lispref/processes.texi (Asynchronous Processes): New anchor
for pipe processes.
* etc/NEWS: Document 'open_channel' function.
* lisp/image/exif.el (exif--direct-ascii-value): New function
(bug#40127).
(exif--parse-directory): Use it to get the correct values for
in-directory (i.e., shorter than 4 octets) strings.
This is especially useful in cases where modules only use a single
entry point and use the data to dispatch to the actual function. Such
a design is common for languages such as Go and C++.
* src/emacs-module.c (module_function_data): New function.
* src/print.c (print_vectorlike): Use it to print module function data
if not NULL.
(print_object): Adapt size of buffer.
* test/data/emacs-module/mod-test.c (emacs_module_init): Pass some
non-NULL data to ‘mod-test-sum’.
(Fmod_test_sum): Check that correct data is passed through.
* test/src/emacs-module-tests.el (mod-test-sum-test)
(module-function-object): Adapt unit tests.
* src/module-env-28.h: Add new module environment functions to
module environment for Emacs 28.
* src/emacs-module.h.in: Document that 'emacs_finalizer' also works
for function finalizers.
* src/emacs-module.c (CHECK_MODULE_FUNCTION): New function.
(struct Lisp_Module_Function): Add finalizer data member.
(module_make_function): Initialize finalizer.
(module_get_function_finalizer)
(module_set_function_finalizer): New module environment functions.
(module_finalize_function): New function.
(initialize_environment): Initialize new environment functions.
* src/alloc.c (cleanup_vector): Call potential module function
finalizer during garbage collection.
* test/data/emacs-module/mod-test.c (signal_error): New helper
function.
(memory_full): Use it.
(finalizer): New example function finalizer.
(Fmod_test_make_function_with_finalizer)
(Fmod_test_function_finalizer_calls): New test module functions.
(emacs_module_init): Define them.
* test/src/emacs-module-tests.el (module/function-finalizer): New unit
test.
* doc/lispref/internals.texi (Module Functions): Document new
functionality.
(Module Misc): Move description of 'emacs_finalizer' type to 'Module
Functions' node, and add a reference to it.
* etc/NEWS: Mention new functionality.
* lisp/faces.el (face-spec-recalc): Handle the :extend attribute
specially and always inherit it from the default spec unless
overwritten in a theme (bug#37774).
* test/lisp/faces-tests.el (faces--test-data-dir): New variable.
(faces--test-extend-with-themes): Use test themes instead of ones
from etc/themes. Update expected values.
* test/data/themes/faces-test-dark-theme.el: New file.
* test/data/themes/faces-test-light-theme.el: New file.
* doc/lispref/display.texi (Face Attributes):
Update the description of ':extend'.
* etc/NEWS: Update the entry for ':extend'.
* etc/themes/adwaita-theme.el:
* etc/themes/deeper-blue-theme.el:
* etc/themes/dichromacy-theme.el:
* etc/themes/leuven-theme.el:
* etc/themes/light-blue-theme.el:
* etc/themes/manoj-dark-theme.el:
* etc/themes/misterioso-theme.el:
* etc/themes/tango-dark-theme.el:
* etc/themes/tango-theme.el:
* etc/themes/tsdh-dark-theme.el:
* etc/themes/tsdh-light-theme.el:
* etc/themes/wheatgrass-theme.el:
* etc/themes/wombat-theme.el: Remove the now-redundant ':extend'
attribute in all the themes.
* test/data/emacs-module/mod-test.c (extract_big_integer): Fix
calculation of size of 'magnitude' when 'emacs_limb_t' is wider
than 'unsigned long'.
* test/src/emacs-module-tests.el
(module--test-assertions--load-non-live-object)
(module--test-assertions--call-emacs-from-gc): On MS-Windows,
check also mod-test-emacs with ".exe" appended, before
skipping the tests.
As described in the new comment added to emacs-module.c, using GMP
directly in the module interface has significant downsides: it couples
the module interface directly to the implementation and requires
module authors to link their module against the same GMP library as
Emacs itself, which is often difficult and an unnecessary burden. By
picking a representation for the magnitude that often matches the one
used by GMP, we can avoid overhead when converting from and to GMP in
most cases.
Loading the test module in test/data/emacs-module and evaluating
(dotimes (_ 10000)
(mod-test-double (* 2 most-negative-fixnum)))
under Callgrind shows that on my (GNU/Linux) machine Emacs only spends
10% of the CPU time of mod-test-double in mpz_import and mpz_export
combined, even though that function does little else. (By contrast,
30% is spent in allocate_pseudovector.)
* src/emacs-module.h.in: Don't check EMACS_MODULE_GMP. Don't include
gmp.h. Remove emacs_mpz structure. Instead, define type alias
emacs_limb_t and macro EMACS_LIMB_MAX.
* src/module-env-27.h: Change interface of extract_big_integer and
make_big_integer to take a sign-magnitude representation instead of
mpz_t.
* src/emacs-module.c: Don't check EMACS_MODULE_GMP or
EMACS_MODULE_HAVE_MPZ_T. Add a comment about the chosen
implementation.
(module_extract_big_integer, module_make_big_integer): Reimplement
without using mpz_t in the interface.
* doc/lispref/internals.texi (Module Values): Adapt function
documentation and example. Stop mentioning GMP and EMACS_MODULE_GMP.
* test/data/emacs-module/mod-test.c: Don't define EMACS_MODULE_GMP or
EMACS_MODULE_HAVE_MPZ_T.
(memory_full, extract_big_integer, make_big_integer): New helper
functions, identical to example in the Info documentation.
(Fmod_test_nanoseconds, Fmod_test_double): Adapt to new interface.
* test/data/emacs-module/mod-test.c (NDEBUG): Undef, to prevent
GCC from complaining “error: unused variable ‘dummy’” and failing
to build the test, if --enable-gcc-warnings.
* test/data/emacs-module/mod-test.c (Fmod_test_nanoseconds)
[__MINGW32__]: Use _Static_assert, not static_assert, as the
latter is not available in mingw.org's MinGW's assert.h.
Add support for a new preprocessor macro EMACS_MODULE_HAVE_MPZ_T to
emacs-module.h. If this macro is defined, assume that mpz_t is
already defined and don’t include gmp.h.
Don’t document the new macro for now, as it’s unclear whether we want
to support this in modules outside the Emacs tree.
* src/emacs-module.h.in: Allow user to prevent inclusion of gmp.h.
* src/emacs-module.c: Use mini-gmp if GMP is unavailable. Don’t
include gmp.h.
* src/lisp.h: Don’t require gmp.h. It’s not needed for lisp.h.
* test/Makefile.in (GMP_LIB, GMP_OBJ): New variables.
($(test_module)): Use them.
* test/data/emacs-module/mod-test.c: Use mini-gmp if GMP is unavailable.
* doc/lispref/internals.texi (Module Values): Clarify that the
truncation is towards negative infinity.
* test/data/emacs-module/mod-test.c (Fmod_test_nanoseconds): Add test
function.
(emacs_module_init): Define it.
* test/src/emacs-module-tests.el (mod-test-nanoseconds): New unit test.
* src/module-env-27.h: Add new module functions to convert big
integers.
* src/emacs-module.h.in (emacs_mpz): Define if GMP is available.
* src/emacs-module.c (module_extract_big_integer)
(module_make_big_integer): New functions.
(initialize_environment): Use them.
* test/data/emacs-module/mod-test.c (Fmod_test_double): New test
function.
(emacs_module_init): Define it.
* test/src/emacs-module-tests.el (mod-test-double): New unit test.
* doc/lispref/internals.texi (Module Values): Document new functions.
Time values are a fundamental data type, and such conversions are hard
to implement within modules because of the various forms of time
values in Emacs Lisp. Adding dedicated conversion functions can
significantly simplify module code dealing with times.
This approach uses nanosecond precision. While Emacs in theory has
support for higher-precision time values, in practice most languages
and standards, such as POSIX, C, Java, and Go, have settled on
nanosecond-precision integers to represent time.
* src/emacs-module.h.in: Add header for struct timespec.
* src/module-env-27.h: Add module functions for time conversion.
* src/emacs-module.c (module_extract_time, module_make_time): New
functions.
(initialize_environment): Use them.
* test/data/emacs-module/mod-test.c (Fmod_test_add_nanosecond): New
test function.
(emacs_module_init): Define it.
* test/src/emacs-module-tests.el (mod-test-add-nanosecond/valid)
(mod-test-add-nanosecond/nil, mod-test-add-nanosecond/invalid): New
unit tests.
* doc/lispref/internals.texi (Module Values): Document time
conversion functions.
pending_signals is often set if no quit is pending. This results in
bugs in module code if the module returns but no quit is actually
pending.
As a better alternative, add a new process_input environment function
for Emacs 27. That function processes signals (like maybe_quit).
* configure.ac: Add module snippet for Emacs 27.
* src/module-env-27.h: New file.
* src/emacs-module.h.in: Add process_input function to environment
interface.
* src/emacs-module.c (module_should_quit): Use QUITP macro to check
whether the caller should quit.
(module_process_input): New function.
(initialize_environment): Use it.
* src/eval.c: Remove obsolete comment.
* test/data/emacs-module/mod-test.c (signal_wrong_type_argument)
(signal_errno): New helper functions.
(Fmod_test_sleep_until): New test module function.
* test/src/emacs-module-tests.el (mod-test-sleep-until): New unit
test.
* doc/lispref/internals.texi (Module Misc): Document process_input.
* lisp/net/shr.el (shr-tag-ol): Don't automatically assume
1-indexing for all ordered lists, use <ol> if given.
* etc/NEWS: Announce change in shr behavior.
* test/data/shr/ol.html:
* test/data/shr/ol.txt: New test data files.
* lisp/tar-mode.el (tar--try-jka-compr): New function copied from
archive-try-jka-compr.
* lisp/arc-mode.el (archive-try-jka-compr): Set buffer-multibyte to t
instead of let-binding coding-system-for-read to 'no-conversion.
* test/data/decompress/tg.tar.gz:
* test/data/decompress/zg.zip: New fixtures.
* test/lisp/arc-mode-tests.el (arc-mode-test-zip-extract-gz):
* test/lisp/tar-mode-tests.el (tar-mode-test-tar-extract-gz): New tests.
* test/lisp/vc/diff-mode-tests.el (diff-mode-test-font-lock)
(diff-mode-test-font-lock-syntax-one-line): Skip unless shell and
diff executables are found.
(diff-mode-test-font-lock-syntax-one-line): New test for one line.
* test/data/vc/diff-mode/hello_world.c:
* test/data/vc/diff-mode/hello_world_1.c:
* test/data/vc/diff-mode/hello_emacs.c:
* test/data/vc/diff-mode/hello_emacs_1.c: New fixtures.
* lisp/vc/diff-mode.el (diff-syntax-fontify): Move remove-overlays
from diff-syntax-fontify-hunk. (Bug#33567)
(diff-syntax-fontify-hunk): Remove VISIT arg from insert-file-contents.
54fb383 (origin/emacs-26) Fix detection of freed emacs_values (Bug#32...
769d0cd ; Fix out-of-tree build for mod-test.so
9a1329e Avoid crashes with very wide TTY frames on MS-Windows
9a613d3 Prevent `modify-file-local-variable-prop-line' from adding ex...
624e7dc Update GNOME bugtracker URLs
51ef6d5 Clarify in the Emacs manual that ChangeLog files are not used
6e08019 Recognize codepage 65001 as a valid encoding
1a350d7 ; * etc/NEWS: Fix format of first lines of some entries.
22d1f53 Avoid compilation warning in nt/addpm.c
7bc9ce7 Fix duplicate custom group names in bibtex.el
a9cf938 Fix outdated text in the Calc manual
Conflicts:
etc/NEWS
etc/PROBLEMS
src/emacs-module.c
src/gtkutil.c
src/image.c
src/xterm.c
test/Makefile.in
* src/emacs-module.c (module_free_global_ref): Compare a value to be
freed with all entries of the list.
* test/data/emacs-module/mod-test.c (Fmod_test_globref_free): New
function.
(emacs_module_init): Make it accessible from Lisp.
* test/src/emacs-module-tests.el (mod-test-globref-free-test): New
test which uses it.
This puts functions defined in the module into the 'load-history'.
* test/data/emacs-module/mod-test.c (bind_function): Use 'defalias'
instead of 'fset'.
* test/src/emacs-module-tests.el (module/describe-function-1): Adapt
unit test.
cfc94fd (origin/emacs-26) Don't mention 'vc-stay-local' in the user m...
8ce430b Fix a typo in calendar.texi
bb748b3 Minor improvement in wording of the Emacs manual
b603aff Revert "Fix tempfile creation when byte compiling"
4fd446e Fix tempfile creation when byte compiling
7f48a11 Improve the Emacs manual as suggested in emacs-manual-bugs
728ded0 * lisp/emacs-lisp/bytecomp.el: Tweak last change
c6c05e2 Unbreak building Emacs on FreeBSD
a41ad3d Don't unnecessarily use non-ASCII characters in C sources
c28d4b6 Portability fixes in emacs-module-tests
1d50c18 Add tests for term.el
* test/Makefile.in (abs_top_srcdir): Add variable, needed by
CPPFLAGS.
* test/data/emacs-module/mod-test.c: Include <limits.h>.
(pT, pZ, T_TYPE, Z_TYPE): Compatibility macros, for systems that
don't support %td and %zu format specs.
(emacs_module_init): Use compatibility macros to make the error
messages print meaningful values (and avoid compiler warnings).
63b04c11d5 Fix copyright years by hand
5c7dd8a783 Update copyright year to 2018
220a9ecba1 Merge from Gnulib
312c565566 Don't add empty keyboard macro to macro ring (Bug#24992)
39ca289a7a Allow customization of decoding of "man" command
f8240815ea * etc/NEWS: Add security consideration note on passphrase ...
0c78822c70 Fix subtle problem with scroll-down when scroll-margin is ...
acd289c5a4 Fix problems with indexing in User manual
b240c7846b * lisp/help.el (describe-key): Only (copy-sequence elt) wh...
e879a5444a * src/buffer.c (Frestore_buffer_modified_p): Fix bug#29846
81b1028b63 Improve documentation of 'inhibit-modification-hooks' and ...
7175496d7a Fix doc string of 'enable-recursive-minibuffers'
5b38406491 Fix documentation of delsel and of killing text
# Conflicts:
# etc/NEWS
# etc/refcards/ru-refcard.tex
Facilitates finding associations between MIME types and desktop files
that report an association with that type. Combined with mailcap.el's
MIME facilities, it should be easy to use desktop files.
* lisp/xdg.el (xdg-mime-table): New variable.
(xdg-mime-apps-files, xdg-mime-collect-associations, xdg-mime-apps):
New functions.
* test/data/xdg/mimeapps.list: New file.
* test/data/xdg/mimeinfo.cache: New file.
* test/lisp/xdg-tests.el (xdg-mime-associations): New test.
Most of this change is to boilerplate commentary such as license URLs.
This change was prompted by ftp://ftp.gnu.org's going-away party,
planned for November. Change these FTP URLs to https://ftp.gnu.org
instead. Make similar changes for URLs to other organizations moving
away from FTP. Also, change HTTP to HTTPS for URLs to gnu.org and
fsf.org when this works, as this will further help defend against
man-in-the-middle attacks (for this part I omitted the MS-DOS and
MS-Windows sources and the test tarballs to keep the workload down).
HTTPS is not fully working to lists.gnu.org so I left those URLs alone
for now.
* lisp/xdg.el (xdg-desktop-read-group): Add condition to catch
localized strings.
* test/lisp/xdg-tests.el (xdg-desktop-parsing): Add test to ensure
parsing l10n strings doesn't error but is essentially a no-op.
Use that to extend xdg-desktop-read-file. Also fix a bug where all
entries in all groups were read and returned by xdg-desktop-read-file.
* lisp/xdg.el (xdg-desktop-read-group): New function.
(xdg-desktop-read-file): Use it.
* test/data/xdg/malformed.desktop: New file.
* test/data/xdg/test.desktop: Add another section.
* test/lisp/xdg-tests.el (xdg-desktop-parsing): Test presence of a key
in another group. Test reading a prescribed group. Test detecting a
malformed key=value.
* lisp/xdg.el: Add support for Desktop Entry Specification.
(xdg--user-dirs-parse-line): Check if file is readable.
(xdg-desktop-group-regexp, xdg-desktop-entry-regexp): New variables.
(xdg--desktop-parse-line, xdg-desktop-read-file, xdg-desktop-strings):
New functions.
* test/lisp/xdg-tests.el:
* test/data/xdg/test.desktop:
* test/data/xdg/wrong.desktop: New files.
It's technically possible to write a user pointer finalizer that calls
into Emacs module functions. This would be disastrous because it
would allow arbitrary Lisp code to run during garbage collection.
Therefore extend the module assertions to check for this case.
* src/emacs-module.c (module_assert_thread): Also check whether a
garbage collection is in progress.
* test/data/emacs-module/mod-test.c (invalid_finalizer)
(Fmod_test_invalid_finalizer): New test module functions.
(emacs_module_init): Register new test function.
* test/src/emacs-module-tests.el (module--test-assertion)
(module--with-temp-directory): New helper macros.
(module--test-assertions--load-non-live-object): Rename existing
unit test, use helper macros.
(module--test-assertions--call-emacs-from-gc): New unit test.
The test/data/emacs-module/Makefile only built a single target, and
inlining it into test/Makefile simplifies dependency tracking and
reduces code duplication.
* configure.ac: Don't build test/data/emacs-module/Makefile.
* Makefile.in ($(test_module)): Inline compilation.
(clean): Also clean test module outputs.
