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* Add two optional arguments to 'string-width'Eli Zaretskii2021-04-141-0/+45
| | | | | | | | | | | | | | | | | | | * src/character.c (Fstring_width, lisp_string_width): Accept two optional arguments FROM and TO, to indicate the substring to be considered. (Fstring_width): Add caveats in the doc string about display features ignored by the function. (Bug#47712) * src/character.h (lisp_string_width): Update prototype. * src/editfns.c (styled_format): Adjust call of lisp_string_width to its changed signature. * test/src/character-tests.el (character-test-string-width): New file with tests for 'string-width'. * doc/lispref/display.texi (Size of Displayed Text): Document caveats of using 'string-width'. * etc/NEWS: Announce the change.
* Add a variant of the Seccomp filter file that allows 'execve'.Philipp Stephani2021-04-112-0/+34
| | | | | | | | | | | | | | | | This is useful when starting Emacs with a Seccomp filter enabled, e.g. using 'bwrap'. * lib-src/seccomp-filter.c (main): Generate new Seccomp files. * lib-src/Makefile.in (all) (seccomp-filter.bpf seccomp-filter.pfc seccomp-filter-exec.bpf seccomp-filter-exec.pfc): Generate new Seccomp files. * .gitignore: Ignore new Seccomp files. * test/src/emacs-tests.el (emacs-tests/bwrap/allows-stdout): New unit test.
* Add a helper binary to create a basic Secure Computing filter.Philipp Stephani2021-04-102-0/+50
| | | | | | | | | | | | | | | | | | | | | | The binary uses the 'seccomp' helper library. The library isn't needed to load the generated Secure Computing filter. * configure.ac: Check for 'seccomp' header and library. * lib-src/seccomp-filter.c: New helper binary to generate a generic Secure Computing filter for GNU/Linux. * lib-src/Makefile.in (DONT_INSTALL): Add 'seccomp-filter' helper binary if possible. (all): Add Secure Computing filter file if possible. (seccomp-filter$(EXEEXT)): Compile helper binary. (seccomp-filter.bpf seccomp-filter.pfc): Generate filter files. * test/src/emacs-tests.el (emacs-tests/seccomp/allows-stdout) (emacs-tests/seccomp/forbids-subprocess): New unit tests. * test/Makefile.in (src/emacs-tests.log): Add dependency on the helper binary.
* Add support for --seccomp command-line option.scratch/seccomp-emacs-openPhilipp Stephani2021-04-101-0/+131
| | | | | | | | | | | | | | | | | | | | | | | When passing this option on GNU/Linux, Emacs installs a Secure Computing kernel system call filter. See Bug#45198. * configure.ac: Check for seccomp header. * src/emacs.c (usage_message): Document --seccomp option. (emacs_seccomp): New wrapper for 'seccomp' syscall. (load_seccomp, maybe_load_seccomp): New helper functions. (main): Potentially load seccomp filters during startup. (standard_args): Add --seccomp option. * lisp/startup.el (command-line): Detect and ignore --seccomp option. * test/src/emacs-tests.el (emacs-tests/seccomp/absent-file) (emacs-tests/seccomp/empty-file) (emacs-tests/seccomp/file-too-large) (emacs-tests/seccomp/invalid-file-size): New unit tests. (emacs-tests--with-temp-file): New helper macro. * etc/NEWS: Document new --seccomp option.
* Remove redundant #' before lambda in testsStefan Kangas2021-04-041-3/+3
| | | | | | | | | | | | | | * test/lisp/electric-tests.el (save-electric-modes) (inhibit-in-mismatched-string-inside-ruby-comments) (inhibit-in-mismatched-string-inside-c-comments, js-mode-braces) (js-mode-braces-with-layout) (js-mode-braces-with-layout-and-indent, autowrapping-1) (autowrapping-2, autowrapping-3, autowrapping-4, autowrapping-5) (autowrapping-6, autowrapping-7): * test/lisp/progmodes/xref-tests.el (xref--xref-file-name-display-is-relative-to-project-root): * test/src/thread-tests.el (threads-signal-early) (threads-signal-main-thread): Remove redundant #' before lambda.
* File unlock errors now issue warnings (Bug#46397)Matt Armstrong2021-03-271-12/+22
| | | | | | | | | | | | | | | | The primary idea is to allow `kill-buffer' and `kill-emacs' to complete even if Emacs has trouble unlocking the buffer's file. * lisp/userlock.el (userlock--handle-unlock-error): New function, call `display-error'. * src/filelock.c (unlock_file_body): New function, do what 'unlock_file' used to. (unlock_file_handle_error): New function, call `userlock--handle-unlock-error' with the captured error. (unlock_file): Handle `file-error' conditions by calling the handler defined above. * test/src/filelock-tests.el (filelock-tests-kill-buffer-spoiled): (filelock-tests-unlock-spoiled): Modify to test new behavior.
* Add test coverage for src/filelock.c (Bug#46397)Matt Armstrong2021-03-271-0/+173
| | | | * test/src/filelock-tests.el: New file.
* Assert not local-variable-p after setq in let_default bindingSpencer Baugh2021-03-251-0/+1
| | | | | | | | Breaking this is a likely way to break this test, so this saves a bit of time in debugging. * test/src/data-tests.el (data-tests--let-buffer-local): Add assertion to test.
* Add a test for let-binding unwindingSpencer Baugh2021-03-251-0/+22
| | | | | | | | | Bindings in other buffers are not un-set when we unwind a let-binding which set the default value. There doesn't seem to be an existing test which covers this, so here's one. * test/src/data-tests.el (data-tests--let-buffer-local-no-unwind-other-buffers): Add test for let-binding unwinding behavior
* Remove unnecessary requires of rxStefan Kangas2021-03-221-1/+0
| | | | | * lisp/cedet/semantic/wisent/python.el (rx): * test/src/process-tests.el (rx): Remove unnecessary requires.
* Fix a warning due to not preloading facemenu.elStefan Kangas2021-03-191-0/+1
| | | | * test/src/undo-tests.el (facemenu): Require.
* Fix breaking undo-testLars Ingebrigtsen2021-03-181-0/+1
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* Add some new tests for keymap.cStefan Kangas2021-03-061-1/+57
| | | | | | | | | * test/src/keymap-tests.el (keymap-define-key/undefined) (keymap-define-key/keyboard-macro, keymap-define-key/lambda) (keymap-define-key/keymap, keymap-define-key/menu-item) (keymap-lookup-key/list-of-keymaps, keymap-lookup-key/too-long): New tests. (keymap-lookup-key): Extend test slightly.
* Skip tests that require Internet when there's no InternetRobert Pluim2021-02-221-7/+15
| | | | | | | | | | | | | | | | | | | | | Bug#46641 The network-stream-tests actually work fine when the local machine has no IP at all, but cause a crash in the GnuTLS library when there is an IP configured but the interface is down. * test/lisp/net/network-stream-tests.el (internet-is-working): New defvar, checks if we can resolve "google.com". (connect-to-tls-ipv4-nowait, connect-to-tls-ipv6-nowait) (open-network-stream-tls-nowait, open-gnutls-stream-new-api-nowait) (open-gnutls-stream-old-api-nowait): Use it to check for working Internet access. * test/src/process-tests.el (internet-is-working): New defvar, checks if we can resolve "google.com". (lookup-family-specification, lookup-unicode-domains) (unibyte-domain-name, lookup-google, non-existent-lookup-failure): Use it to check for working Internet access.
* Improve wrong number of args error message in propertizeStefan Kangas2021-02-221-0/+4
| | | | | | | * src/editfns.c (Fpropertize): Improve error message. (syms_of_editfns) <Qpropertize>: New DEFSYM. * test/src/editfns-tests.el (propertize/error-wrong-number-of-args): New test.
* * test/lisp/emacs-lisp/edebug-tests.el: Adjust to new `edebug-eval-defun`.Stefan Monnier2021-02-191-8/+31
| | | | | | | (edebug-tests-trivial-backquote): Adjust to the way `eval-defun` outputs its result. (edebug-tests-cl-macrolet): Adjust to the fact that now macro expansion takes place during the `eval-defun` even when Edebugging.
* Allow any JSON value at the top level (Bug#42994).Philipp Stephani2021-02-131-0/+28
| | | | | | | | | | | | | | | | | | | | 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.
* ; Minor license statement fixesStefan Kangas2021-02-082-22/+22
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* Move line-number-at-pos to CLars Ingebrigtsen2021-02-071-4/+4
| | | | | | | | | | | | | * 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.
* Add a new function 'line-number-at-position'Lars Ingebrigtsen2021-02-071-0/+8
| | | | | | | | | * 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).
* ; Fix byte-compilation warningEli Zaretskii2021-02-061-1/+1
| | | | | * test/src/process-tests.el (process-sentinel-interrupt-event): Fix byte compilation warning.
* ; Fix last changeEli Zaretskii2021-02-061-2/+1
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* New test for src/process.c on MS-WindowsIoannis Kappas2021-02-061-0/+29
| | | | | | | * test/src/process-tests.el (process-sentinel-interrupt-event): New test. (Bug#46284) Copyright-paperwork-exempt: yes
* Fix copying text properties in 'format'Eli Zaretskii2021-02-061-1/+21
| | | | | | | | * 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/minibuf-tests.el (test-inhibit-interaction): Fix test.Stefan Kangas2021-02-011-4/+4
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* Add more assertions to recently-added process test.Philipp Stephani2021-01-241-1/+2
| | | | | | * test/src/process-tests.el (process-tests/multiple-threads-waiting): Also check that 'thread-join' and 'thread-last-error' return the expected errors.
* Add a unit test testing interaction between threads and processes.Philipp Stephani2021-01-231-0/+29
| | | | | | | | 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.
* * test/src/xdisp-tests.el: Fix tests to work in batch modeAaron Jensen2021-01-181-18/+15
| | | | | | | (xdisp-tests--window-text-pixel-size) (xdisp-tests--window-text-pixel-size-leading-space) (xdisp-tests--window-text-pixel-size-trailing-space): Fix tests. (Bug#45748)
* Replace Unix commands with Emacs in process tests.Philipp Stephani2021-01-181-9/+71
| | | | | | | | | | | | 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.
* Ensure that sentinels are called during 'accept-process-output'.Philipp Stephani2021-01-171-0/+53
| | | | | | | | | | | | 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.
* Fix deadlock when receiving SIGCHLD during 'pselect'.Philipp Stephani2021-01-161-5/+0
| | | | | | | | | | | | | | | | | | | | | | 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.
* Fix 'window-text-pixel-size' when there are leading/trailing spacesAaron Jensen2021-01-151-0/+30
| | | | | | | | | | | | | | | 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.
* Prefer skip-unless in more testsStefan Kangas2021-01-132-17/+17
| | | | | | * test/lisp/emacs-lisp/timer-tests.el (timer-tests-debug-timer-check): * test/src/decompress-tests.el (zlib--decompress): * test/src/xml-tests.el (libxml-tests): Prefer skip-unless.
* Only run IPv6 tests if we have an IPv6 addressRobert Pluim2021-01-121-5/+16
| | | | | | | | | | | | | | * 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.
* Add a new function 'buffer-line-statistics'Lars Ingebrigtsen2021-01-121-0/+58
| | | | * src/fns.c (Fbuffer_line_statistics): New function.
* Add a new variable `inhibit-interaction'Lars Ingebrigtsen2021-01-122-0/+21
| | | | | | | | | | | | | | | | | | | * doc/lispref/elisp.texi (Top): Add a link. * doc/lispref/errors.texi (Standard Errors): Mention the new error. * doc/lispref/minibuf.texi (Minibuffers): Add a link. (Inhibiting Interaction): New node. * src/data.c (syms_of_data): Define the `inhibited-interaction' error. * src/lisp.h: Export the barfing function. * src/lread.c (Fread_char, Fread_event, Fread_char_exclusive): Barf if inhibited. * src/minibuf.c (barf_if_interaction_inhibited): New function. (Fread_from_minibuffer, Fread_no_blanks_input): Barf if inhibited. (syms_of_minibuf): Define the `inhibit-interaction' variable.
* Increase probability that a process test succeeds.Philipp Stephani2021-01-101-0/+5
| | | | | | * test/src/process-tests.el (process-tests/fd-setsize-no-crash/make-process): Work around potential Emacs bug.
* Fix process-tests on MS-WindowsEli Zaretskii2021-01-051-0/+11
| | | | | | | It was again broken by recent changes. * test/src/process-tests.el (process-tests/fd-setsize-no-crash/make-serial-process): Skip test on MS-Windows.
* Pretty-print keys without <> around modifiers (bug#45536)Mattias Engdegård2021-01-051-0/+12
| | | | | | | | | | | | | | | 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.
* Make a process tests a bit more robust.Philipp Stephani2021-01-041-2/+5
| | | | | | * test/src/process-tests.el (process-tests/fd-setsize-no-crash/make-process): Allow for processes to fail before 'exec'.
* Make a process test faster.Philipp Stephani2021-01-021-3/+5
| | | | | | | | | | | | 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.
* Simplify TTY allocation.Philipp Stephani2021-01-021-59/+12
| | | | | | | | | | | | 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.
* Update copyright year to 2021Paul Eggert2021-01-0139-39/+39
| | | | Run "TZ=UTC0 admin/update-copyright".
* Fix process-tests on MS-WindowsEli Zaretskii2020-12-311-0/+7
| | | | | * test/src/process-tests.el (process-tests--fd-setsize-test): On MS-Windows start the pipe processes in the "stopped" condition.
* * test/src/process-tests.el: Let timeouts fail the tests. Fix some docstringsMichael Albinus2020-12-311-26/+26
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* Unbreak process tests if 'errno' is not installed.Philipp Stephani2020-12-311-1/+3
| | | | | * test/src/process-tests.el (process-tests--EMFILE-message): Don't signal an error if the 'errno' binary is unavailable.
* Manually limit file descriptors that we select on to FD_SETSIZE.Philipp Stephani2020-12-311-29/+71
| | | | | | | | | | | | | | | | | | 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.
* Fix a potential unit test breakage on GNU/Linux.Philipp Stephani2020-12-311-1/+8
| | | | | | * 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.
* Fix an incorrect Edebug specification.Philipp Stephani2020-12-301-1/+1
| | | | | * test/src/process-tests.el (process-tests--with-many-pipes): Fix incorrect Edebug specification.
* Extend and overhaul FD_SETSIZE overflow tests.Philipp Stephani2020-12-301-35/+307
| | | | | | | | | | | | | | | | | | | | | | | | 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.
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