Newer standards like RFC 8259, which obsoletes the earlier RFC 4627,
now allow any top-level value unconditionally, so Emacs should too.
* src/json.c (Fjson_serialize, Fjson_insert): Pass JSON_ENCODE_ANY to
allow serialization of any JSON value. Call 'lisp_to_json' instead of
'lisp_to_json_toplevel'. Remove obsolete comments
(neither JSON_DECODE_ANY nor JSON_ALLOW_NUL are allowed here). Reword
documentation strings.
(Fjson_parse_string, Fjson_parse_buffer): Pass JSON_DECODE_ANY to
allow deserialization of any JSON value. Reword documentation
strings.
(lisp_to_json_nonscalar, lisp_to_json_nonscalar_1): Rename from
"toplevel" to avoid confusion.
(lisp_to_json): Adapt caller.
* test/src/json-tests.el (json-serialize/roundtrip-scalars): New unit
test.
* doc/lispref/text.texi (Parsing JSON): Update documentation.
* doc/lispref/positions.texi (Text Lines): Revert previous change.
* lisp/simple.el (line-number-at-pos): Remove definition.
* lisp/simple.el (count-lines): Revert back to using
`forward-line', because there seems to be a disagreement on how
lines should be counted in a region...
* src/fns.c (Fline_number_at_pos): Rename from
Fline_number_at_position and adjust parameter list.
* doc/lispref/positions.texi (Text Lines): Document it.
* lisp/simple.el (count-lines): Use it.
(line-number-at-pos): Ditto.
* src/fns.c (Fline_number_at_position): New function (bug#22763).
* src/editfns.c (styled_format): Fix accounting for text
properties that come from the format string. (Bug#46317)
* test/src/editfns-tests.el (format-properties): Add new tests for
bug#46317.
* test/src/process-tests.el (process-tests/multiple-threads-waiting):
Also check that 'thread-join' and 'thread-last-error' return the
expected errors.
This unit test tests that we can call 'accept-process-output' in
parallel from multiple threads.
* test/src/process-tests.el (process-tests/multiple-threads-waiting):
New unit test.
That way, the tests only depend on Emacs, and not on utilities that
might not be available during test time.
* test/src/process-tests.el (process-tests--eval)
(process-tests--emacs-command, process-tests--emacs-binary)
(process-tests--dump-file)
(process-tests--usable-file-for-reinvoke): New helper functions.
(process-tests/sentinel-called)
(process-tests/sentinel-with-multiple-processes): Use them.
When we're trying to notify a process about a status change, we need
to ignore the SIGCHLD pipe temporarily, otherwise the code would
likely not run into the timeout case that's necessary for a status
change to happen.
* src/process.c (wait_reading_process_output): Ignore the SIGCHLD pipe
when notifying a process about a status change.
* test/src/process-tests.el (process-tests/sentinel-called)
(process-tests/sentinel-with-multiple-processes): New unit tests.
If we receive and handle a SIGCHLD signal for a process while waiting
for that process, 'pselect' might never return. Instead, we have to
explicitly 'pselect' that the process status has changed. We do this
by writing to a pipe in the SIGCHLD handler and having
'wait_reading_process_output' select on it.
* src/process.c (child_signal_init): New helper function to create a
pipe for SIGCHLD notifications.
(child_signal_read, child_signal_notify): New helper functions to
read from/write to the child signal pipe.
(create_process): Initialize the child signal pipe on first use.
(handle_child_signal): Notify waiters that a process status has
changed.
(wait_reading_process_output): Make sure that we also catch
SIGCHLD/process status changes.
* test/src/process-tests.el
(process-tests/fd-setsize-no-crash/make-process): Remove workaround,
which is no longer needed.
First, scan to find the first non-whitespace character and then
backtrack to find the beginning of the line. The previous
algorithm always started on the non-whitespace character during
the backtrack, causing it to stop immediately and not actually
find the beginning of the line. The same applies to the end of
line calculation.
* src/xdisp.c: (Fwindow_text_pixel_size): Fix off by one error.
(Bug#45748)
* test/src/xdisp-tests.el (xdisp-tests--window-text-pixel-size)
(xdisp-tests--window-text-pixel-size-leading-space)
(xdisp-tests--window-text-pixel-size-trailing-space): New tests.
* test/src/process-tests.el (ipv6-is-available): New function for
checking whether we have a globally routable IPv6 prefix assigned.
(lookup-family-specification): Use 'ipv6-is-available' to check for
IPv6. Use 'localhost' instead of 'google.com' to test
'network-lookup-address-info' API.
(lookup-google): Use 'ipv6-is-available' to check for
IPv6.
* test/lisp/net/nsm-tests.el (nsm-ipv6-is-available): Rename to
'ipv6-is-available', make identical to the one in
test/src/process-tests.el.
Be consistent when pretty-printing keys: put modifiers outside <>,
thus the more logical C-M-<return> instead of <C-M-return>.
* src/keymap.c (Fsingle_key_description):
Skip modifier prefix before adding <>.
* doc/lispref/help.texi (Describing Characters): Update example.
* doc/lispref/debugging.texi (Backtraces):
* doc/lispref/minibuf.texi (Text from Minibuffer):
Use @kbd instead of @key.
* etc/NEWS: Announce the change.
* test/src/keymap-tests.el (keymap--key-description):
* test/lisp/subr-tests.el (subr--kbd): New tests.
The test 'process-tests/fd-setsize-no-crash/make-process' used to call
'sleep' to ensure that enough processes are live to trigger a
FD_SETSIZE overflow. However, we can just call 'cat' instead and
close standard input when done. That way, we only wait as long as
needed.
* process-tests.el
(process-tests/fd-setsize-no-crash/make-process): Invoke 'cat' instead
of 'sleep'. Close standard input to exit the 'cat' processes.
The 'process-tty-name' already provides the TTY name, we don't have
interrogate the TTY host.
* test/src/process-tests.el
(process-tests/fd-setsize-no-crash/make-serial-process): Use
'process-tty-name' instead of having the TTY host print its TTY
name. Check whether TTY names are unique.
(process-tests--new-pty, process-tests--with-temp-file): Remove;
no longer used.
This works even if another thread or process resets the resource limit
for open file descriptors, e.g., using 'prlimit' on GNU/Linux.
* src/process.c (create_process, create_pty, Fmake_pipe_process)
(Fmake_serial_process, connect_network_socket)
(server_accept_connection): Limit file descriptors to FD_SETSIZE.
* test/src/process-tests.el (process-tests--with-raised-rlimit): New
helper macro.
(process-tests--fd-setsize-test): Rename from
'process-tests--with-many-pipes'. Increase resource limit during test
if possible.
(process-tests/fd-setsize-no-crash/make-process)
(process-tests/fd-setsize-no-crash/make-pipe-process)
(process-tests/fd-setsize-no-crash/make-network-process)
(process-tests--new-pty): Rename callers.
* test/src/process-tests.el
(process-tests/fd-setsize-no-crash/make-process): Allow special exit
codes that can happen if terminal setup fails in the child process.
Instead of trying to generate the right number of processes,
pre-create lots of unused pipe processes until creation fails. Extend
the tests to the 'pty' connection type and other kinds of process
objects.
* test/src/process-tests.el (process-tests--ignore-EMFILE)
(process-tests--with-buffers, process-tests--with-processes)
(process-tests--with-many-pipes, process-tests--with-temp-file)
(process-tests--with-temp-directory): New helper macros.
(process-tests/fd-setsize-no-crash/make-process): Renamed from
'process-tests/fd-setsize-no-crash'. Fail on timeout. Also test the
'pty' connection type. Pre-create lots of pipe processes so we reach
the FD_SETSIZE limit faster. Ignore EMFILE more precisely, if
possible.
(process-tests/fd-setsize-no-crash/make-pipe-process)
(process-tests/fd-setsize-no-crash/make-network-process)
(process-tests/fd-setsize-no-crash/make-serial-process): New tests
that test FD_SETSIZE limits for other kinds of processes.
(process-tests--EMFILE-message): New helper function and cache
variable.
(process-tests--new-pty): New helper function.
* src/w32.c (pipe2): When forcibly closing pipe handles due to
overflow of FD_SETSIZE, set the handles to -1, to avoid assertion
violations in emacs_close.
* test/src/process-tests.el (process-tests/fd-setsize-no-crash):
No need to skip this test anymore.
* test/src/process-tests.el (process-tests/fd-setsize-no-crash):
Skip this test on windows-nt systems, as we cannot use more than
FD_SETSIZE file descriptors there: if we try, we crash.
* doc/lispref/sequences.texi (Sequence Functions): Document them.
* lisp/emacs-lisp/byte-opt.el (side-effect-free-fns): Mark them as
side-effect-free.
* lisp/emacs-lisp/shortdoc.el (list): Mention them.
* src/fns.c (Flength): Mention them in the doc string.
(length_internal): New function.
(Flength_less, Flength_greater, Flength_equal): New defuns.
(syms_of_fns): Sym them.
Such filenames are dangerous, as Emacs would silently only use the
part up to the first NUL byte. Reject them explicitly instead.
* src/coding.c (encode_file_name_1): New helper function.
(encode_file_name): Check that encoded filename doesn't contain a
NUL byte.
(syms_of_coding): Define 'filenamep' symbol.
* test/src/fileio-tests.el (fileio-tests/null-character): New unit
test.
* etc/NEWS: Document change.
Give get-buffer-create an optional argument to inhibit buffer hooks
in internal or temporary buffers for efficiency (bug#34765).
* etc/NEWS: Announce new parameter of get-buffer-create and
generate-new-buffer, and that with-temp-buffer and with-temp-file
now inhibit buffer hooks.
* doc/lispref/buffers.texi (Buffer Names): Fix typo.
(Creating Buffers): Document new parameter of get-buffer-create and
generate-new-buffer.
(Buffer List, Killing Buffers): Document when buffer hooks are
inhibited.
(Current Buffer):
* doc/lispref/files.texi (Writing to Files): Document that
with-temp-buffer and with-temp-file inhibit buffer hooks.
* doc/lispref/internals.texi (Buffer Internals): Document
inhibit_buffer_hooks flag. Remove stale comment.
* doc/misc/gnus-faq.texi (FAQ 5-8):
* lisp/simple.el (shell-command-on-region): Fix indentation.
* lisp/files.el (kill-buffer-hook): Document when hook is inhibited.
(create-file-buffer):
* lisp/gnus/gnus-uu.el (gnus-uu-unshar-article):
* lisp/international/mule.el (load-with-code-conversion):
* lisp/mh-e/mh-xface.el (mh-x-image-url-fetch-image):
* lisp/net/imap.el (imap-open):
* lisp/net/mailcap.el (mailcap-maybe-eval):
* lisp/progmodes/flymake-proc.el
(flymake-proc--read-file-to-temp-buffer)
(flymake-proc--copy-buffer-to-temp-buffer): Simplify.
* lisp/subr.el (generate-new-buffer): Forward new optional argument
to inhibit buffer hooks to get-buffer-create.
(with-temp-file, with-temp-buffer, with-output-to-string):
* lisp/json.el (json-encode-string): Inhibit buffer hooks in buffer
used.
* src/buffer.c (run_buffer_list_update_hook): New helper function.
(Fget_buffer_create): Use it. Add optional argument to set
inhibit_buffer_hooks flag instead of comparing the buffer name to
Vcode_conversion_workbuf_name. All callers changed.
(Fmake_indirect_buffer, Frename_buffer, Fbury_buffer_internal)
(record_buffer): Use run_buffer_list_update_hook.
(Fkill_buffer): Document when buffer hooks are inhibited. Use
run_buffer_list_update_hook.
(init_buffer_once): Inhibit buffer hooks in Vprin1_to_string_buffer.
(Vkill_buffer_query_functions, Vbuffer_list_update_hook): Document
when hooks are inhibited.
* src/buffer.h (struct buffer): Update inhibit_buffer_hooks
commentary.
* src/coding.h (Vcode_conversion_workbuf_name):
* src/coding.c (Vcode_conversion_workbuf_name): Make static again
since it is no longer needed in src/buffer.c.
(code_conversion_restore, code_conversion_save, syms_of_coding):
Prefer boolean over integer constants.
* src/fileio.c (Finsert_file_contents): Inhibit buffer hooks in
" *code-converting-work*" buffer.
* src/window.c (Fselect_window): Fix grammar. Mention
window-selection-change-functions alongside buffer-list-update-hook.
* test/src/buffer-tests.el: Fix requires.
(buffer-tests-inhibit-buffer-hooks): New test.
This runs insignificantly faster in C, and is already fast enough on
reasonably modern hardware. We might as well lift it to Lisp.
This benchmark can be used to verify:
(benchmark-run 10 (apropos-command "test"))
=> (0.12032415399999999 2 0.014772391999999995) ; C
=> (0.13513192100000002 2 0.017216643000000004) ; Lisp
* lisp/subr.el (apropos-internal): New defun, converted from C.
* src/keymap.c (Fapropos_internal): Remove defun.
(apropos_accum): Remove function.
(apropos_predicate, apropos_accumulate): Remove variables.
(syms_of_keymap): Remove defsubr for Fapropos_internal, and
definitions of the above variables.
* test/src/keymap-tests.el (keymap-apropos-internal)
(keymap-apropos-internal/predicate): Move tests from here...
* test/lisp/subr-tests.el (apropos-apropos-internal)
(apropos-apropos-internal/predicate): ...to here.
When creating multibyte or unibyte strings, we should guarantee the
following invariants:
- When creating empty strings, a NULL data pointer should be allowed.
This often arises in practice if the string length isn't known in
advance, and we don't want to unnecessarily trigger undefined
behavior. Since functions like memcpy might not accept NULL
pointers, use the canonical empty string objects in this case.
- Nonzero strings should be guaranteed to be unique and mutable.
These are the same guarantees expected from Lisp functions such as
'make-string' or 'unibyte-string'. On the other hand, empty strings
might not be unique.
* src/emacs-module.c (module_make_string)
(module_make_unibyte_string): Correctly handle empty strings.
* test/src/emacs-module-resources/mod-test.c (Fmod_test_make_string):
New test function.
(emacs_module_init): Expose it.
* test/src/emacs-module-tests.el (mod-test-make-string/empty)
(mod-test-make-string/nonempty): New unit tests.
* doc/lispref/internals.texi (Module Values): Document properties and
corner cases for strings.
* test/src/casefiddle-tests.el (casefiddle-tests-char-casing):
(upcase ?ß) now returns ?ẞ (U+7838), partly for technical reasons but
the previous behaviour was arbitrary and arguably less useful.
Correct upcasing of ß is normally SS, which is what Fupcase returns if
given a string, or (for special purposes) ẞ.
