These are both conditions having the form (and A B) where A is
side-effect-free and B may be known to be nil at compile time.
The compiler will then warn about A being useless and thrown away.
The fix is to test B first.
* lisp/gnus/gnus.el (gnus-method-to-server):
Test `(not no-enter-cache)` first.
(gnus-server-get-method): Test `group` first.
Lexical variables bound to a constant value (symbol, number or string)
are substituted at their point of use and the variable then eliminated
if possible. Example:
(let ((x (+ 2 3))) (f x)) => (f 5)
This reduces code size, eliminates stack operations, and enables
further optimisations. The implementation is conservative, and is
strongly curtailed by the presence of variable mutation, conditions
and loops.
* lisp/emacs-lisp/byte-opt.el
(byte-optimize-enable-variable-constprop)
(byte-optimize-warn-eliminated-variable): New constants.
(byte-optimize--lexvars, byte-optimize--vars-outside-condition)
(byte-optimize--vars-outside-loop, byte-optimize--dynamic-vars):
New dynamic variables.
(byte-optimize--substitutable-p, byte-optimize-let-form):
New functions.
(byte-optimize-form-code-walker): Adapt clauses for variable
constprop, and add clauses for 'setq' and 'defvar'.
* test/lisp/emacs-lisp/bytecomp-tests.el (bytecomp-test-var)
(bytecomp-test-get-var, bytecomp-test-identity)
(byte-opt-testsuite-arith-data): Add test cases.
* doc/lispref/frames.texi (Layout Parameters): Update entry on
'child-frame-border-width' parameter.
* src/frame.c (make_frame): Init child_frame_border_width to -1.
(Fframe_child_frame_border_width): Return internal border width if
child frame border width parameter is nil.
(gui_report_frame_params): Report nil as child frame border
width parameter if the frame value is negative.
* src/frame.h (FRAME_INTERNAL_BORDER_WIDTH): Return value of
child frame border width only if it is not negative.
* src/xfns.c (Fx_create_frame): Default child frame border to -1
when recording it in its frame slot via gui_default_parameter.
* src/nsfns.m (ns_set_child_frame_border_width): Handle nil ARG.
(Fx_create_frame): Default child frame border width parameter to
nil.
* src/w32fns.c (w32_set_child_frame_border_width): Handle nil ARG.
(Fx_create_frame): Default child frame border width parameter to
nil.
* src/xfns.c (x_set_child_frame_border_width): Handle nil ARG.
(Fx_create_frame): Default child frame border width parameter to
nil.
8ad48a0bdd (origin/emacs-27) Improve doc string of 'text-scale-adjust'
7a25ff767d Clarify the indent-rigidly doc string
6c5ddf0e0b Fix two small tab bar issues
c71e08eba9 Fix last change in syntax.texi
# Conflicts:
# lisp/indent.el
The following commits were skipped:
b99848c72c Bind default-directory to the project root
19534f988c Make sure default-directory relates to the originating buffer
d1455027e0 Initialize signal descriptions after pdumping
256356a36f Clarify the "Sentinels" node in the lispref manual
89f1634afc Fix problem with non-ASCII characters in nnmaildir
* lisp/subr.el (provided-mode-derived-p): Remove detail about "or
their aliases", since that seems self-evident (bug#46331) (and
derived-mode-p works the same, and doesn't have the bit in
question).
* lisp/gnus/message.el (message-send): Query if it looks like
encryption was intended, but is not going to happen.
* lisp/gnus/mml-sec.el (mml-secure-is-encrypted-p): Allow saying
whether there's any <#secure tags present (bug#24411).
* lisp/emacs-lisp/testcover.el: Rename the symbol `1value'
throughout the file to `testcover-1value' to allow using the
variable in code that's to be tested (bug#25471).
* lisp/subr.el (provided-mode-derived-p): Allow this to work on
modes that are aliases of other modes (bug#46331). For instance:
(provided-mode-derived-p 'javascript-mode 'prog-mode)
* lisp/auth-source.el (auth-source-search): Adapt docstring
(auth-source-format-prompt): Remove trailing ": ".
(auth-source-netrc-create, auth-source-secrets-create)
(auth-source-plstore-create): Adapt prompts. Use `format-prompt'.
Do not ask interactively if `auth-source-save-behavior' is nil.
* 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.
* src/xdisp.c (Fwindow_text_pixel_size): Fix last change: preserve
the original Y coordinate after start_display, instead of zeroing
it out. Reported by martin rudalics <rudalics@gmx.at>.
* doc/lispref/syntax.texi (Syntax Properties): Correct the
information about flushing the state by copying the text from the
doc string (bug#46274).
(cherry picked from commit ff701ce2b2)
* doc/emacs/indent.texi (Indentation Commands): Clarify that the
other keys don't just exit the transient mode, but are also
handled as normally (bug#46296).
* lisp/term.el (term-emulate-terminal): Ensure that the buffer is
still alive before selecting it (bug#46323). This avoids an error
when saying `C-x k' in an ansi-term buffer.
* lisp/progmodes/project.el (project-find-regexp):
Fix the previous change (project-root is not defined in this version).
(project-or-external-find-regexp): Same.
* lisp/progmodes/project.el (project-find-regexp):
Bind default-directory to the project root, to save this value
in the resulting buffer (esp. if the project selector was used,
(https://lists.gnu.org/archive/html/emacs-devel/2021-02/msg00140.html).
(project-or-external-find-regexp): Same.
(cherry picked from commit c07ebfcbe0)
