* lisp/help-mode.el (help-setup-xref): Instead of killing all
local variables directly, call the current major mode function, to
preserve its own locals while dropping the rest (bug#73637).
* lisp/help-mode.el (help-setup-xref): Kill local values of
'xref-backend-functions' and
'semantic-symref-filepattern-alist' regardless of
'outline-minor-mode'.
This fixes an issue that Juri Linkov mentioned in Bug#71117.
* lisp/help-mode.el (help-function-def--button-function): When
searching for the definition of a variable, make sure to call
'help-C-file-name' with KIND argument set to 'var'.
Instead of choosing English words to describe the kind of function,
use the actual type of the function object (from `cl-type-of`)
directly, and make it a button to display info about that type.
* lisp/help-fns.el (help-fns-function-description-header): Use the
function's type name in the description instead of "prose".
Use `insert` instead of `princ`, so as to preserve the text-properties
of the button.
* lisp/emacs-lisp/cl-extra.el (cl-help-type): Move to `help-mode.el`
and rename to `help-type`.
(cl--describe-class): Adjust accordingly.
* lisp/help-mode.el (help-type): New type, moved and renamed from
`cl-extra.el`.
That backend was added from `cl-extra.el` with no autoload, so
(describe-symbol `advice) failed to show the info about
the `advice` type unless `cl-extra.el` had been loaded beforehand.
`C-h o RET advice RET` worked by accident because the completion
table uses `cl-some` which is autoloaded from `cl-extra.el`.
* lisp/help-mode.el (describe-symbol-backends): Add the "type" backend.
* lisp/emacs-lisp/cl-extra.el (describe-symbol-backends): Don't add the
"type" backend here.
(describe-mode, describe-mode--minor-modes): Use 'describe-mode-outline'.
* lisp/help-mode.el (help-setup-xref): After disabling outline-minor-mode
also kill all outline-related local variables. So that they won't affect
the output of other help commands in the same help buffer.
* lisp/help-fns.el (describe-symbol): Make xref links happen in
all sections (bug#49587).
* lisp/help-fns.el (describe-symbol): Add back/forward links.
* lisp/help-mode.el (help-make-xrefs): Factor out links from
here...
(help-xref--navigation-buttons): To here.
* doc/lispref/keymaps.texi (Inheritance and Keymaps): Document
using 'make-composed-keymap' with 'defvar-keymap'.
* lisp/help-mode.el (help-mode-map): Use defvar-keymap to make this
code match the above documentation change.
* lisp/help-mode.el (help-mode-setup): Declare obsolete.
(help-mode-finish): Ditto.
* lisp/help.el (with-help-window): Don't be a wrapper around
`with-temp-buffer-window', because that made the macro big and
difficult to understand.
(help--window-setup): Implement the relevant bits from
`with-temp-buffer-window'. Also don't clear out local variables,
because that makes things like `text-scale-mode' not work (bug#25979).
* doc/lispref/help.texi (Keys in Documentation): Document it.
lisp/help-mode.el (help-make-xrefs): Implement a new \+ syntax to
inhibit buttonification.
* doc/emacs/help.texi (Help): Document it.
* lisp/help-mode.el (help-function-def--button-function): Use it.
* lisp/help-mode.el (help-goto-info): Use it.
* lisp/help.el (help-window-select): Mention it.
(help-window-keep-selected): New user option (bug#9054).
* lisp/info-look.el (info-lookup-symbol):
(info-lookup): Allow keeping the same window.
* lisp/help-fns.el (help-enable-variable-value-editing): New user
option.
(describe-variable): Tag values for editing.
(help-fns--editable-variable, help-fns-edit-variable): New
functions (bug#36826).
(help-fns--edit-value-mode-map, help-fns--edit-value-mode)
(help-fns-edit-mode-done): New mode and commands.
* doc/emacs/help.texi (Help Mode): Document it.
* lisp/help-mode.el (help-mode-map): Add an `I' keystroke.
(help-goto-lispref-info): New command.
* lisp/info-look.el (:mode): Add an entry for the lispref manual.
* lisp/help-mode.el (help-make-xrefs): Don't add buttons to
keymaps, because they're pre-buttonized.
* lisp/help.el (help--describe-command): Make buttons out of the
definitions.
* lisp/help.el (help-link-key-to-documentation): New user option.
(substitute-command-keys): Add a link from keys to the command they
are bound to, if the above new option is non-nil. (Bug#8951)
* etc/NEWS: Announce the new option.
* lisp/help-mode.el (help-man): New button type.
(help-xref-man-regexp): New const.
(help-make-xrefs): Use them to allow making man page buttons.
* doc/lispref/tips.texi (Documentation Tips): Document the new
hyperlink type. (Bug#39215)
* lisp/mouse.el (context-menu-functions): Add context-menu-middle-separator
to default values.
(context-menu-middle-separator): New function.
* lisp/replace.el (occur-context-menu): Use middle-separator.
* lisp/progmodes/elisp-mode.el (elisp-context-menu):
* lisp/progmodes/prog-mode.el (prog-context-menu):
Use middle-separator and reorder menu items correspondingly.
* lisp/subr.el (event-start, event-end): Provide window-point
as an arg for posn-at-point, and for the constructed list.
* lisp/help-mode.el (help-mode-context-menu): Remove a kludge
that checked if window-buffer is current-buffer.
* 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.
* lisp/help-mode.el (help-mode-syntax-table): New variable (bug#39134).
(help-make-xrefs): Use it to make picking out symbols in curved
quotes work reliably.
(help-xref-on-pp): Ditto.
