This allows abandoning the redisplay of a window
that takes too long to complete. Bug#45898
* src/xdisp.c (update_redisplay_ticks): New function.
(init_iterator, set_iterator_to_next): Call
'update_redisplay_ticks'.
(syms_of_xdisp) <max_redisplay_ticks>: New variable.
<list_of_error>: Remove 'void-variable': it is no longer needed,
since 'calc_pixel_width_or_height' can no longer signal a
void-variable error, and it gets in the way of aborting
redisplay via 'redisplay_window_error'.
* src/keyboard.c (command_loop_1): Reinitialize the tick count
before executing each command in the loop.
* src/syntax.c (scan_sexps_forward): Call 'update_redisplay_ticks'
after finishing the loop.
* src/dispnew.c (make_current): Make sure enabled rows of the
current matrix have a valid hash, even if redisplay of a window
was aborted due to slowness. This avoids assertion violations in
'scrolling_window' due to the wrong hash value.
* src/xdisp.c (display_working_on_window_p): New global variable.
(unwind_display_working_on_window): New function.
* src/keyboard.c (command_loop_1): Reset
'display_working_on_window_p' before and after executing commands.
* src/window.c (Frecenter, window_scroll, displayed_window_lines):
* src/indent.c (Fvertical_motion): Set
'display_working_on_window_p' before calling 'start_display'.
* src/syntax.c (scan_sexps_forward): Call 'update_redisplay_ticks'
after finishing the loop.
* src/regex-emacs.c (re_match_2_internal):
* src/bidi.c (bidi_find_bracket_pairs, bidi_fetch_char)
(bidi_paragraph_init, bidi_find_other_level_edge): Update the
redisplay tick count as appropriate, when moving the iterator by
one character position actually requires to examine many more
positions.
* src/xdisp.c (redisplay_window_error): Show messages about
aborted redisplay of a window as delayed-warnings.
* doc/emacs/trouble.texi (DEL Does Not Delete): Move to the end of
the chapter. This issue is no longer frequent or important as it
was back in Emacs 20 days.
(Long Lines): Document 'max-redisplay-ticks'.
* doc/emacs/emacs.texi (Top): Update the detailed menu.
* etc/NEWS: Announce 'max-redisplay-ticks'.
* src/xdisp.c (display_working_on_window_p): New global variable.
(unwind_display_working_on_window): New function.
* src/keyboard.c (command_loop_1): Reset
'display_working_on_window_p' before and after executing commands.
* src/window.c (Frecenter, window_scroll, displayed_window_lines):
* src/indent.c (Fvertical_motion): Set
'display_working_on_window_p' before calling 'start_display'.
* src/syntax.c (scan_sexps_forward): Call 'update_redisplay_ticks'
after finishing the loop.
* src/window.c (struct saved_window): New member 'vscroll'.
(Fset_window_configuration, save_window_save): Save and restore
the window's vscroll value.
* lisp/net/shr.el (shr-insert-document): Restore the original
window's hscroll, in case we are rendering in a window other than
where the document will be eventually displayed. This avoids
resetting hscroll of windows we use temporarily for shr's
rendering job. (Bug#56008)
* src/window.h (window_body_unit): New enum...
(window_body_width): ... use it.
* src/window.c (window_body_unit_from_symbol): New function.
(window_body_height, window_body_width): Make PIXELWISE a
'window_body_unit'.
(window-body-height, window-body-width): Accept 'remap' for PIXELWISE.
(window-lines-pixel-dimensions, window_change_record_windows)
(run_window_change_functions, resize_frame_windows, grow_mini_window)
(shrink_mini_window, scroll-left, scroll-right): Update calls to
'window_body_height' and 'window_body_width'.
* src/indent.c (compute_motion): Update calls to 'window_body_width'.
* lisp/eshell/em-ls.el (eshell-ls-find-column-widths)
(eshell-ls-find-column-lengths): Use 'window-body-width'.
* lisp/eshell/esh-var.el (eshell-variable-aliases-list): Use
'window-body-width' and 'window-body-height'.
* test/lisp/eshell/esh-var-tests.el (esh-var-test/window-height)
(esh-var-test/window-width): Rename to...
(esh-var-test/lines-var, esh-var-test/columns-var): ... and update
expected value.
* doc/lispref/windows.texi (Window Sizes): Document new behavior of
PIXELWISE argument for 'window-body-width' and 'window-body-height'.
* etc/NEWS: Announce this change (bug#55696).
* doc/lispref/windows.texi (Window Sizes):
* doc/lispref/display.texi (Size of Displayed Text): Remove
documentation.
* lisp/fringe.el (fringe-mode): Point to the right function.
* lisp/window.el (window-char-pixel-width)
(window-char-pixel-height, window-max-characters-per-line): Remove
functions -- this was already added as window-max-chars-per-line.
* src/window.c (Fwindow_body_width): Adjust doc string.
* doc/lispref/windows.texi (Vertical Scrolling): Document new
`preserve-vscroll-p' parameter of `set-window-vscroll'.
* etc/NEWS: Announce new parameter.
* lisp/pixel-scroll.el (pixel-scroll-precision-scroll-down-page)
(pixel-scroll-precision-scroll-up-page): Use that parameter when
setting the vscroll.
* src/window.c (window_scroll_pixel_based, Fset_window_vscroll):
Adjust for new parameter.
* src/window.h (struct window): New flag `preserve_vscroll_p'.
* src/xdisp.c (redisplay_window): Preserve the vscroll inside
force_start on frozen windows with that flag set. (bug#55312)
* lisp/window.el (scroll-other-window, scroll-other-window-down):
Moved from window.c and change implementation so that they respect
command remappings in the target window (bug#20236).
* lisp/frame.el (toggle-frame-maximized): Mention it.
(frame-hide-title-bar-when-maximized): New function (bug#31968).
Adapted from code by Jonathan Kyle Mitchell.
* src/window.c (syms_of_window): Mention it.
This consolidates the test made in those two functions so as to make
sure they agree whether a window needs to be redisplayed.
At the same time, change this test so it uses the window's point
rather than the buffer's point when comparing to `w->last_point`.
* src/xdisp.c (needs_no_redisplay): New function, extracted from
`redisplay_window`.
(redisplay_window, prepare_menu_bars): Use it.
* src/window.c (window_point): New function, extracted from `Fwindow_point`.
(Fwindow_point): Use it.
* src/window.h (window_point): Declare it.
84a2857722 Fix scrolling of the stack window in Calc
9dd44505b1 ; * src/window.c (Fset_window_start): Clarify the effect o...
24a6c7c8c0 Update and fix instructions and scripts for updating the W...
886339747b Extend tramp-archive-test45-auto-load
ff997ad786 Ensure local `default-directory' in Tramp when needed
4f27588a16 Clarify "idleness" in the ELisp manual
* doc/lispref/buffers.texi (Current Buffer, Buffer List): Update
references to 'selected-window'.
* doc/lispref/elisp.texi (Top): Move up Selecting Windows section
in front of Window Sizes section.
* doc/lispref/frames.texi (Creating Frames): Say window system
instead of windowing system.
(Frame Layout): Add Tab Bar to layout.
(Layout Parameters): Add 'tab-bar-lines'.
(Input Focus): Say window system window instead of window
manager window. Fix reference to 'selected-window'.
* doc/lispref/objects.texi (Window Type): Minor rewrite.
* doc/lispref/windows.texi (Basic Windows): Rewrite. Settle on
term 'window system window' for disambiguation with our windows.
Move 'selected-window' description to Selecting Windows section.
Move schematic of window structure here. Use 'decorations' for
objects outside the window body. Say that the areas reserved
for continuation and truncation glyphs, vertical dividers and
line numbers are part of the window body.
(Windows and Frames): Minor rewrite, adding and fixing some
cross references. Move live window schematic to 'Basic Windows'
section.
(Selecting Windows): Move section in front of Window Sizes
section. Move description of 'selected-window' here. Move up
description of 'frame-selected-window' and
'set-frame-selected-window'. Update and move description of
'window-bump-use-time' here.
(Window Sizes): Throughout use the term 'decorations' instead of
enumerating them individually. Add 'window-tab-line-height'
description.
(Resizing Windows): Again use the term 'decorations' instead of
enumerating them individually.
(Splitting Windows): Minor fix.
(Cyclic Window Ordering): Improve descriptions of 'get-lru-window'
and 'get-mru-window'. Move 'window-bump-use-time' to Selecting
Windows section.
(Coordinates and Windows, Window Configurations): Once more use
the term 'decorations' instead of enumerating them individually.
* src/window.c (Fwindow_bump_use_time): Move after
'window-use-time'. Make it work for live windows only. Make
WINDOW argument optional. Update doc-string.
When `delete-window' deletes its frame's selected window, this new
option allows to choose another window as replacement.
* lisp/window.el (get-lru-window, get-mru-window)
(get-largest-window): New optional argument NO-OTHER.
(window-at-pos): New function.
(delete-window-set-selected): New option.
(delete-window): Handle `delete-window-set-selected'.
* src/window.c (Fdelete_window_internal): Set the selected
window of WINDOW's frame to the first window on that frame and
let `delete-window' choose a more suitable window instead.
* doc/lispref/windows.texi (Deleting Windows): Describe new
option `delete-window-set-selected'.
(Cyclic Window Ordering): Describe new NO-OTHER argument for
`get-lru-window', `get-mru-window' and `get-largest-window'.
* etc/NEWS: Mention `delete-window-set-selected' and the NO-OTHER
argument.
When a frame in this state is selected again by Fselect_frame (but not by
Fselect_window), the mini-window rather than the frame's currently selected
window, is chosen for selection, should there still be an active minibuffer in
it.
This fixes bug #48674.
* src/frame.h (struct frame): Add new boolean field select_mini_window_flag.
* src/frame.c (make_frame): Initialize select_mini_window_flag to false.
(do_switch_frame): Set the new flag appropriately for the old frame, and
process the new frame's setting of this flag, before setting it to false.
* src/window.c (select_window): Set f->select_mini_window_flag to false.
(Fset_frame_selected_window, Fdelete_other_windows_internal)
(Fdelete_window_internal): Add comments clarifying that there is no clearing
of f->select_mini_window_flag in these functions.
Also fix some unsafe coding.
* lisp/window.el (push-window-buffer-onto-prev): New function, extracted from
(record-window-buffer): Refactor by extracting the above, and removing the now
redundant parameter DO-MINIBUF.
* src/minibuf.c (zip_minibuffer_stacks, read_minibuf): Replace calls to
get_minibuffer (0) by nth_minibuffer (0). Replace calls to
Qrecord_window_buffer by calls to Qpush_window_buffer_onto_prev.
(Factive_minibuffer_window, read_minibuf_unwind): Call abort_emacs should an
"impossible" null value be returned by nth_minibuffer.
(read_minibuf): Move the get_minibuffer_call to just after the incrementation
of minibuf_level as a precaution against a missing buffer in
Vminibuffer_list.
(nth_minibuffer): Replace XCAR by Fcar, to allow (car nil) to work.
(init_minibuf_once): Create the inactive buffer *Minibuf-0*.
(syms_of_minibuf): New DEFSYM, Qpush_window_buffer_onto_prev.
* src/window.c (restore_window_configuration): Replace some XCARs and XCDRs
by Fcar_safe and Fcdr_safe.
Also fix a bug where, with minibuffer-follows-selected-frame neither nil nor
t, a minibuffer could appear in two frames at the same time.
* src/window.c (Fset_window_configuration): Add a new &optional parameter
DONT-SET-MINIWINDOW, which inhibits the minibuffer from being restored from
the supplied window configuration.
(restore_window_configuration): Enhance to match the above.
* src/minibuf.c (read_minibuf): Enhance the argument list to the
restore_window_configuration calls to match the above. In the main case,
restoring the minibuffer is inhibited.
(read_minibuf_unwind): Should the frame with the expired minibuffer not be
found ("can't happen"), unwind the stacked data nevertheless, rather than just
exiting.
* src/keyboard.c (read_char_help_form_unwind): Amend a call of
Fset_window_configuration.
* doc/lispref/windows.texi (Window Configurations): Document the new form of
set-window-configuration.
* etc/NEWS (Lisp Changes in Emacs 28.1): Amend the entry for
set-window-configuration.
* src/frame.c (do_switch_frame): Don't switch to a tooltip frame.
(Fselect_frame): Do not select a tooltip frame.
* src/w32fns.c (Fx_show_tip):
* src/xfns.c (Fx_show_tip): Set the tooltip window's
`no-other-window' parameter so `other-window' will skip it.
* src/window.c (select_window): Do not select a tooltip window.
(candidate_window_p): Make sure MINIBUF is live.
(decode_next_window_args): Make sure that W's frame's minibuffer
window is live before including it.
(Qno_other_window): New symbol.
Move that function next to its siblings. Also simplify it, since
after careful analysis it is now clear that the frame's title's update
is already handled elsewhere (in `prepare_menu_bars` and `redisplay_window`)
so we just need to make sure the `redisplay` bit is set.
* src/window.c (wset_update_mode_line): Move to `src/xdisp.c`.
* src/window.h (wset_update_mode_line): Declare.
This happened with minibuffer-follows-selected-frame set to t.
* doc/emacs/mini.texi (Basic Minibuffer): State where a command's action takes
place when a minibuffer's frame has been deleted.
* lisp/window.el (window--before-delete-windows, record-window-buffer): Take
into account that minibuffers are now recorded on w->prev_buffers field.
* src/fns.c (merge_c): New version of `merge' taking a C function, rather than
a Lisp function as the comparison function.
* src/frame.c (do_switch_frame): Pass arguments sf and for_deletion to
move_minibuffers_onnto_frame.
* src/lisp.h (top level): Declare merge_c and
move_minibuffers_onto_selected_frame.
* src/minibuf.c (MB_frame): New Lisp_Object recording the minibuffer's frame.
(choose_minibuf_frame): Remove all code except that which sets minibuf_window
to the current frame's minibuffer.
(minibuffer_ent_greater): New comparison function, passed to merge_c.
(zip_minibuffer_stacks): New function.
(move_minibuffers_onto_frame): Renamed from `move_minibuffer_onto_frame' given
two arguments, the old frame and for_deletion, and simplified. Minibuffers
are now stacked in the mini-window's ->prev_buffers field.
(read_minibuf): Several detailed amendments.
(exp_MB_frame): New Lisp_Object, the expired minibuffer's frame.
(read_minibuf_unwind): Search for the expired minibuffer's frame, rather than
taking it from (unreliable) variables. Switch temporarily to this frame for
tidying up operations.
(minibuffer_unwind): New function which pops a stacked minibuffer.
(syms_of_minibuf): Call staticpro for the two new Lisp variables.
* src/window.c (Fset_window_configuration): Don't record minibuffers with
record-window-buffer.
* src/xdisp.c (gui_consider_frame_title): Remove redundant Fselect_window,
which caused an unwanted frame switch. Amend the arguments to
format_mode_line_unwind_data to match.
* src/pdumper.h (pdumper_do_now_and_after_late_load): New function.
* src/pdumper.c (dump_late_hooks, nr_dump_late_hooks): New static
variables.
(dump_metadata_for_pdumper): Add support for late load hooks.
(pdumper_do_now_and_after_late_load_impl): New functions.
(pdumper_load): Add support for late load hooks.
* src/window.c (init_window_once): Register
'init_window_once_for_pdumper' to be executed after late load.
In particular, add a new value to the variable, and fix several bugs apparent
with the implementation up till now.
* doc/emacs/mini.texi (Basic Minibuffer): Add a description of the new
non-nil, non-t value of minibuffer-follows-selected-frame.
* doc/emacs/trouble.texi (Quitting): Add a description of how C-g handles
recursive minibuffers when typed in one which isn't the most nested.
* doc/lispref/minibuf.texi (Intro to Minibuffers): Add an @dfn for "active
minibuffer".
(Minibuffer Commands): Document that exit-minibuffer throws an error when not
invoked from the innermost Minibuffer.
(Recursive Mini): Amend the description of the visibility of outer level
minibuffers.
(Minibuffer Misc): In the description of the minibuffer hooks, replace "the
minibuffer" with "a minibuffer".
* etc/NEWS (Entry announcing minibuffer-follows-selected-frame): Add a
description of the new non-nil, non-t value.
* lisp/cus-start.el (top level): make the customize entry for
minibuffer-follows-selected-frame a choice between three entries.
* lisp/minibuffer.el (exit-minibuffer): throw an error when we're not in the
most nested minibuffer.
(top level): Bind C-g to abort-minibuffers in minibuffer-local-map.
* lisp/window.el (window-deletable-p): return the symbol `frame' when (amongst
other things) minibuffer-follows-selected-frame is t.
* src/eval.c (internal_catch): Add a mechanism to (throw 'exit t) repeatedly
when the throw currently being processed doesn't terminate the current
minibuffer.
* src/lisp.h (this_minibuffer_depth): New extern declaration
(minibuf_level): extern declaration moved here from window.h.
* src/minibuf.c (minibuffer_follows_frame, minibuf_stays_put)
(minibuf_moves_frame_when_opened): New and amended functions to query the
value of minibuffer-follows-selected-frame.
(choose_minibuf_frame): check (minibuf > 1) in place of (minibufer > 0) at a
particular place. At another place, check that an alleged frame is so and is
live. Before selecting a non-miniwindow on a different frame, ensure it
really is a different frame.
(move_minibuffer_onto_frame): Stack up all recursive minibuffers on the target
frame. Check the minibuf_window isn't in the old frame before setting that
frame's miniwindow to an inactive minibuffer.
(Finnermost_minibuffer_p, Fabort_minibuffers): New primitives.
(this_minibuffer_depth): New function.
(read_minibuf): Record the calling frame in a variable, and switch back to it
after the recursive edit has terminated normally, using
select-frame-set-input-focus. Stack up all the recursive minibuffers on the
miniwindow where a new minibuffer is being opened. After the recursive edit,
switch the selected window away from the expired minibuffer's window.
(nth_minibuffer): New function.
(minibuffer-follows-selected-frame): Change from a DEFVAR_BOOL to a
DEFVAR_LISP.
* src/window.c (decode_next_window_args): Set *minibuf to w's mini-window's
content when that content is a minibuffer.
* src/window.h (minibuf_level) Declaration moved from here to lisp.h.
* doc/lispref/windows.texi (Buffer Display Action Functions):
Document it.
* lisp/window.el (display-buffer--action-function-custom-type): Add.
(display-buffer): Mention it.
(display-buffer-use-least-recent-window): New function (bug#45688).
* src/window.c (Fwindow_bump_use_time): New function.
