* lisp/subr.el (when, unless): Return nil when the body is empty.
Reported by Brennan Vincent.
* test/lisp/subr-tests.el (subr-test-when): Add test cases.
(cherry picked from commit 9ee9154247)
Try to save people some time if they're developing on Emacs 30.x.
Do not merge to master.
* lisp/subr.el (if-let*, when-let*, if-let, when-let): Move
docstring text around so that if-let* and when-let* descriptions
no longer refer to if-let and when-let. Note that if-let and
when-let will be marked obsolete, and recommend if-let*,
when-let* and and-let* for new code.
* src/fns.c (Fsecure_hash):
* doc/lispref/text.texi (Checksum/Hash):
* lisp/subr.el (sha1): Fix documentation wrt to the number of
bytes 'secure-hash' and its variants return when BINARY is
non-nil. Reported by Pip Cet <pipcet@protonmail.com>.
This time we take care to preserve properties, and add a test.
* lisp/subr.el (subst-char-in-string):
Use string-replace to avoid resizing mutation and O(n^2) time.
* test/lisp/subr-tests.el (subr--subst-char-in-string): New test.
This reverts commit 184d6e8c02.
It wasn't quite correct: the path through `string-replace` would not
preserve text properties in the input string, which broke Gnus.
For example, (letrec (... (x) ...) ...) is now allowed.
* lisp/subr.el (letrec): Allow omitted init expression.
* test/lisp/subr-tests.el (subr--tests-letrec): Add test case.
It's a common name for this function and symmetric with respect to
`take`. It's also a lot less awkward to type and say.
* lisp/subr.el (drop): New alias.
* doc/lispref/lists.texi (List Elements): Document. Mention the
equation tying `take` and `drop` together.
* etc/NEWS: Announce.
* doc/lispref/windows.texi (Choosing Window): Provide an example
of using '(category . comint)' in the condition of 'display-buffer-alist'
and in the action of 'display-buffer'.
(Buffer Display Action Alists): Add a new action alist entry 'category'.
* lisp/subr.el (buffer-match-p): Add a new condition 'category'.
* lisp/window.el (display-buffer): Document a new action alist entry
'category'.
* doc/lispref/commands.texi (Misc Events): Document new value of
text-conversion-style.
* java/org/gnu/emacs/EmacsService.java (EmacsService)
<IC_MODE_PASSWORD>: New constant.
* java/org/gnu/emacs/EmacsView.java (onCreateInputConnection):
Set TYPE_TEXT_VARIATION_PASSWORD and IME_FLAG_FORCE_ASII if mode
is IC_MODE_PASSWORD.
* lisp/subr.el (read-passwd): Set text-conversion-style to
`password'.
* src/androidgui.h (enum android_ic_mode): New value
ANDROID_IC_MODE_PASSWORD.
* src/androidterm.c (android_reset_conversion): Handle
`password'.
* src/buffer.c (syms_of_buffer)
<&BVAR (current_buffer, text_conversion_style)>: Update doc
string.
* src/textconv.c (syms_of_textconv) <Qpassword>: New DEFSYM.
<Vtext_conversion_edits>: Fix typos in doc string.
The type hierarchy and `cl-type-of` code assumed that `subr-primitive`
only applies to functions, but since it also accepts special-forms it makes
it an unsuitable choice since it can't be a subtype of `compiled-function`.
So, use a new type `primitive-function` instead.
* lisp/subr.el (subr-primitive-p): Fix docstring (bug#69832).
(primitive-function-p): New function.
* lisp/emacs-lisp/cl-preloaded.el (primitive-function): Rename
from `subr-primitive` since `subr-primitive-p` means something else.
* src/data.c (Fcl_type_of): Return `primitive-function` instead
of `subr-primitive` for C functions.
(syms_of_data): Adjust accordingly.
* test/src/data-tests.el (data-tests--cl-type-of): Remove workaround.
Use the new `cl--define-built-in-type` to reduce the manually
maintained list of built-in type predicates.
Also tweak docstrings to use "supertype" rather than "super type",
since it seems to be what we use elsewhere.
* lisp/subr.el (special-form-p): Remove redundant `fboundp` test.
(compiled-function-p): Don'Return nil for subrs that aren't functions.
* lisp/emacs-lisp/cl-macs.el (type predicates): Trim down the list.
* lisp/emacs-lisp/cl-preloaded.el (cl--define-built-in-type):
Register the corresponding predicate if applicable.
(atom, null): Specify the predicate name explicitly.
* lisp/subr.el (read-char-choice-with-read-key):
* lisp/net/dbus.el (dbus-call-method):
Remove workarounds for the bug fixed in the previous commit
ac82baea1c41ec974ad49f2861ae6c06bda2b4ed, where 'read-event',
'read-char' and 'read-char-exclusively' could return wrongly -1.
In the case of lisp/dbus.el, this reverts commit
7177393826.
* doc/lispref/minibuf.texi (Reading a Password):
* etc/NEWS: 'read-passwd' can toggle the visibility of passwords.
* etc/images/README: Mention the new images below.
* etc/images/conceal.pbm:
* etc/images/conceal.svg:
* etc/images/reveal.pbm:
* etc/images/reveal.svg: New images.
* lisp/simple.el (read-passwd--mode-line-buffer)
(read-passwd--mode-line-icon): New defvars.
(read-passwd--toggle-visibility, read-passwd-mode): New defuns.
* lisp/subr.el (read-passwd-map): Add 'TAB' binding.
(read-passwd--hide-password): New defvar.
(read-passwd--hide-password): Rename function from
`read-password--hide-password'. Adapt callees. Implement both
hiding and showing the password. (Bug#69237)
(read-passwd): Call `read-passwd-mode'.
The macro expansions did not leave a variable _ unused; this triggered
an irritating compiler warning (bug#69108).
* lisp/subr.el (internal--build-binding): Handle bindings of the form
(_ EXPR) separately.
* java/org/gnu/emacs/EmacsService.java (detectKeyboard): New
function.
* lisp/subr.el (use-dialog-box-p): Don't always return t if a
keyboard is present on Android.
* src/android.c (android_init_emacs_service): Link to new
function.
(android_detect_keyboard): New function.
* src/android.h: Update prototypes.
* src/androidfns.c (Fandroid_detect_keyboard)
(syms_of_androidfns): New function.
The obsolete lazy-loaded bytecode feature, enabled by
`byte-compile-dynamic`, slows down Lisp execution even when not in use
because every call to a bytecode function has to check that function
for laziness.
This change forces up-front loading of all lazy bytecode so that we
can remove all those checks. (Dynamically loaded doc strings are not
affected.)
There is no point in generating lazy bytecode any more so we stop
doing that; this simplifies the compiler. `byte-compile-dynamic` now
has no effect.
This is a fully compatible change; the few remaining users of
`byte-compile-dynamic` should not notice any difference.
* src/lread.c (bytecode_from_rev_list): Force eager loading of
lazy bytecode.
* src/bytecode.c (exec_byte_code): Remove lazy bytecode checks.
* src/eval.c (fetch_and_exec_byte_code, Ffetch_bytecode): Remove.
(funcall_lambda): Call exec_byte_code directly, avoiding checks.
* lisp/subr.el (fetch-bytecode): New definition, obsolete no-op.
* lisp/emacs-lisp/disass.el (disassemble-1):
* lisp/emacs-lisp/bytecomp.el (byte-compile-unfold-bcf):
Remove calls to fetch-bytecode.
(byte-compile-dynamic): Update doc string.
(byte-compile-close-variables, byte-compile-from-buffer)
(byte-compile-insert-header, byte-compile-output-file-form)
(byte-compile--output-docform-recurse, byte-compile-output-docform)
(byte-compile-file-form-defmumble):
Remove effects of byte-compile-dynamic.
* doc/lispref/compile.texi (Dynamic Loading): Remove node now that
the entire `byte-compile-dynamic` facility has been rendered inert.
* etc/NEWS: Announce changes.
AFAIK, this provides the same semantics as Common Lisp's `handler-bind`,
modulo the differences about how error objects and conditions are
represented.
* lisp/subr.el (handler-bind): New macro.
* src/eval.c (pop_handler): New function.
(Fhandler_Bind_1): New function.
(signal_or_quit): Handle new handlertypes `HANDLER` and `SKIP_CONDITIONS`.
(find_handler_clause): Simplify.
(syms_of_eval): Defsubr `Fhandler_bind_1`.
* doc/lispref/control.texi (Handling Errors): Add `handler-bind`.
* test/src/eval-tests.el (eval-tests--handler-bind): New test.
* lisp/emacs-lisp/lisp-mode.el (lisp-font-lock-keywords):
Move 'handler-bind' from CL-only to generic Lisp.
(handler-bind): Remove indentation setting, it now lives in the macro
definition.
Let the caller tell us clearly where is the base of the backtrace,
if it's not `debug`. This is done by passing a new `:backtrace-base`
keyword argument to `debug`.
Then use this info systematically in all the places where we access
the real C-level backtrace, to try and avoid inconsistencies and brittle
code that tries to enumerate the expected frames we're in.
* src/eval.c (get_backtrace_starting_at): Add support for offsets in the
`base` argument.
(Fbacktrace_debug): Add optional `base` argument.
* lisp/emacs-lisp/debug.el (debug, debugger-frame, debugger-frame-clear):
Use `debugger--backtrace-base` when calling `backtrace-debug`.
(debugger-setup-buffer): Use `debugger--backtrace-base`
when calling `backtrace-get-frames`.
(debugger-frame-number): Drop `skip-base` arg, assume it's never nil.
Add sanity check.
(debugger--backtrace-base): Use the `:backtrace-base` info
in `debugger-args`.
(debugger-eval-expression): Adjust call to `debugger-frame-number`.
(debug--implement-debug-on-entry): Pass appropriate `:backtrace-base`.
* lisp/subr.el (touch-screen-events-received): New variable.
(read--potential-mouse-event): If a touch screen event's been
registered thus far, continue as though xterm-mouse-mode is
enabled.
* lisp/touch-screen.el (touch-screen-handle-touch): Set that
variable. If t-s-c-t already exists but the new touch point was
assigned the same number by the system, replace the current tool
with it rather than installing it as the anciliary tool.
Looking at uses of `derived-mode-p` and `provide-mode-derived-p`,
I can't find a single use case where it wouldn't be preferable for
it to take a single argument instead of `&rest`: all the calls are
either passing a single argument anyway, or passing a fixed list of modes.
The use of `&rest` just makes the code less efficient and sometimes
more clunky (because of the need for `apply`).
So let's change that (while preserving backward compatibility, of course).
* doc/lispref/modes.texi (Derived Modes): Adjust accordingly.
* lisp/subr.el (provided-mode-derived-p, derived-mode-p): Take the
`modes` as a single argument.
