* doc/emacs/display.texi (Line Truncation, Visual Line Mode):
* doc/lispref/display.texi (Truncation): Document that turning on
line truncation disables wrapping, and vice versa.
* src/buffer.c (syms_of_buffer) <truncate-lines>:
* src/xdisp.c (syms_of_xdisp) <truncate-partial-width-windows>:
Warn against turning on when 'visual-line-mode' is in effect.
* lisp/simple.el (visual-line-mode): Document that this mode
disables line truncation. (Bug#29664)
* lisp/help-mode.el (help-customization-group): New button.
(help-xref-customization-group-regexp): New const.
(help-make-xrefs): Use them to allow making customization group
buttons.
* doc/emacs/calendar.texi: Document the change.
* lisp/calendar/diary-lib.el (diary-offset):
* test/lisp/calendar/icalendar-tests.el: Add a test (bug#50195).
* doc/emacs/fixit.texi (Spelling): Replace mentions of
flyspell-use-mouse-3-for-menu with context-menu-mode.
* lisp/mouse.el (context-menu-map): Use the function from the
text property context-menu-function at mouse click event.
* lisp/textmodes/flyspell.el (flyspell--set-use-mouse-3-for-menu):
Remove function.
(flyspell-use-mouse-3-for-menu): Remove defcustom added recently in 28.1.
(flyspell-context-menu): New function.
(flyspell-mode): Don't call flyspell--set-use-mouse-3-for-menu.
(flyspell-mode-on): Replace flyspell-use-mouse-3-for-menu
with context-menu-mode.
(make-flyspell-overlay): When context-menu-mode is non-nil,
put overlay context-menu-function with flyspell-context-menu
instead of using keymap flyspell-mouse-map.
* doc/misc/message.texi (Message Headers): Clarify that it comes from
the Latin "res" meaning "in the matter of" rather than "in response
to" as claimed previously (see RFC-2822).
* doc/emacs/misc.texi (Shell Mode): Document it.
* lisp/comint.el (comint-osc-handlers, comint-osc--marker): New
variables.
(comint-osc-process-output): New function.
(comint-osc-hyperlink-map): New map.
(comint-osc-hyperlink-handler): New function.
* doc/lispref/modes.texi (Other Font Lock Variables):
* lisp/jit-lock.el (jit-lock-functions, jit-lock-register):
Document the return value of the fontification functions.
* doc/lispref/searching.texi (Extending Rx): Add example illustrating
how to define a user-defined Rx form that performs computation,
from a discussion with Michael Herdeegen (bug#50136).
* lisp/emacs-lisp/rx.el (rx): Clarify evaluation time for `eval`.
* doc/emacs/frames.texi (Menu Mouse Clicks): Mention S-F10
to pop up the context menu.
* src/callint.c (Fcall_interactively):
Use inhibit_mouse_event_check for the case 'e'.
(inhibit-mouse-event-check): New variable.
https://lists.gnu.org/archive/html/emacs-devel/2021-08/msg00733.html
* doc/lispref/frames.texi (Finding All Frames): Clarify what it
means to "consider".
* src/frame.c (Fnext_frame): Rewrite doc string to say what the
parameters actually mean (bug#13339).
* doc/emacs/files.texi (Auto Save Files): Document it.
* lisp/cus-start.el (standard): Add customize form.
* lisp/files.el (delete-auto-save-files): Move definition to C
(since it's used in the C layer).
* src/buffer.c (Fkill_buffer): Use the new variable (and remove
the old code that apparently didn't trigger for
kill-buffer/delete-auto-save-files.
(syms_of_buffer): Add new variable
kill-buffer-delete-auto-save-files and move definition of
delete-auto-save-files here (bug#21612).
* doc/lispref/nonascii.texi (Terminal I/O Encoding):
* doc/emacs/mule.texi (Terminal Coding):
* lisp/international/mule.el (set-keyboard-coding-system):
Document that 'set-keyboard-coding-system' has no effect on modern
MS-Windows systems. (Bug#15289)
* doc/misc/mh-e.texi, lisp/mh-e/mh-e.el: Update references to
SourceForge with current URLs and a note that MH-E development
no longer occurs in that repository.
* doc/misc/cl.texi (Structures): Rename the slot "name" in the
examples to "first-name", since we're talking about the names of
slots a lot here, and having a slot with the name "name" makes the
examples somewhat confusing.
* lisp/emacs-lisp/cl-macs.el (cl-defstruct): Clarify certain
things about slots (bug#14278).
* doc/lispref/modes.texi (Major Mode Conventions): Add conventions
of setting menu-bar menus and context menus for a major mode.
* doc/emacs/frames.texi (Menu Mouse Clicks): Fix description of
context menu functionality.
* doc/lispref/files.texi (Saving Buffers): Document it.
* lisp/files.el (file-preserve-symlinks-on-save): New user option
(bug#18125).
(basic-save-buffer-2): Use it.
* doc/emacs/files.texi (Copying and Naming): Document it.
* lisp/files.el (copy-directory): Allow copying symbolic links as
is (bug#10897).
(copy-directory-create-symlink): New user option.
Copyright-paperwork-exempt: yes
* doc/lispref/display.texi (Echo Area Customization):
* src/xdisp.c (syms_of_xdisp): Adjust the documentation of
message-truncate-lines to changes that fixed bug#46718.
* doc/lispref/commands.texi (Command Modes): Add index entries.
* doc/lispref/elisp.texi (Top): Add entry for the Command Modes
node to the detailed node listing.
* doc/lispref/display.texi (Finding Overlays): Adjust documentation.
* src/buffer.c (overlays_in): Treat the end of the buffer and the
end of the narrowed-to buffer the same (bug#19422).
(Foverlays_in): Adjust doc string.
