* lisp/svg.el (svg-create): Fix previous unconditional addition of
the xmlns:xlink declaration -- callers may already add one, and
having it twice is something most svg libraries doesn't like.
* nt/gnulib-cfg.mk (OMIT_GNULIB_MODULE_utimens): Omit the
'utimens' module in the MinGW build: 'utimens' is not used by
Emacs, and 'fdutimens' is implemented in w32.c.
backtrace_eval_unrewind is used to temporarily reverse
let-bindings (it's called with a positive argument to reverse
bindings, and then a negative argument to re-apply them) by
backtrace--locals and backtrace-eval. For the SPECPDL_LET_DEFAULT and
SPECPDL_LET_LOCAL cases (which occur for let-bindings on buffer-local
variables), the code calls Fdefault_value and Fbuffer_local_value on
the symbol.
For symbols which are unbound at top-level, the first (with positive
argument) call to backtrace_eval_unrewind will set the symbol's value
to unbound (putting the current value in the specpdl's "old value"
slot). On the second (with negative argument) call,
backtrace_eval_unrewind attempts to retrieve the symbol's value with
Fdefault_value or Fbuffer_local_value, but that raises a void-variable
signal. This interrupts the restoration of the let-bindings, so any
other variables more recent on the stack will now have the wrong
value.
* src/data.c (default_value): Make non-static.
* src/lisp.h: Declare it.
* src/eval.c (backtrace_eval_unrewind): Replace the calls to
Fdefault_value and Fbuffer_local_value with default_value and
buffer_local_value, respectively. The latter do exactly the same as
the former, except if the symbol's value is Qunbound they just return
it instead of signaling void-variable.
* lisp/vc/diff-mode.el (diff-add-log-current-defuns): If there is a
scan-error when calling end-of-defun, go to end of hunk. This can
easily happen since we are calling end-of-defun on a partial code
fragment from a diff.
* lisp/vc/log-edit.el (log-edit-generate-changelog-from-diff): Bind
display-buffer-overriding-action around the log-edit-show-diff call
only. Otherwise, it can affect, for example, debugger windows
triggered by the diff-add-log-current-defuns call.
* lisp/emacs-lisp/cl-extra.el (cl-concatenate): Use apply, to avoid
adding extra nesting of args.
* test/lisp/emacs-lisp/cl-extra-tests.el (cl-concatenate): New test.
* lisp/progmodes/project.el (project-find-regexp): Require 'grep'
to be able to call 'grep-read-files'.
(project-search, project-query-replace-regexp): Doc fixes.
* doc/emacs/maintaining.texi (Projects): New section.
* doc/emacs/emacs.texi (Top): Add "Projects" to the detailed menu.
* lisp/tab-line.el (tab-line-format-template): Use tab-line-new-button-show.
(tab-line-new-tab-choice): Remove choice 'nil' with "No button".
(tab-line-separator): Add docstring.
* 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.
* 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.
* src/xdisp.c (reset_box_start_end_flags): New function.
(handle_face_prop): Only set the start_of_box_run_p flag, don't
reset it.
(pop_it): Set the face_box_p flag, if the popped face requires
that, when continuing iteration over buffer text.
(get_next_display_element, next_element_from_display_vector): Only
set the end_of_box_run_p flag, never reset it here.
(set_iterator_to_next): Don't reset the start_of_box_run_p and
end_of_box_run_p flags here. They are now reset as side effect of
PRODUCE_GLYPHS.
(append_space_for_newline): Restore the end_of_box_run_p flag
after PRODUCE_GLYPHS where we previously didn't reset it.
* src/dispextern.h (PRODUCE_GLYPHS): Call
reset_box_start_end_flags after producing glyphs.
(Bug#40124)
* src/timefns.c (frac_to_double): Omit optimization that is
invalid on machines with excess precision (e.g., gcc x86 with 387
FPU), because it double-rounds. Found via ‘gcc -m32’ on x86-64.
