* etc/NEWS: Document timer format change.
* lisp/image.el (image-animate-timer):
* lisp/time.el (display-time-world-timer):
Use timer--function and timer--args rather than raw access to
timer vector.
* lisp/gnus/gnus-art.el (gnus-article-stop-animations):
Use timer--function rather than raw access to timer vector.
Fixes: debbugs:12430
Remove the "edebug-" prefix from non-dynamically-scoped variables.
Mark unused args with underscore.
(edebug-save-restriction, edebug-outside-excursion): Use `declare'.
(edebug-form-data): Use defvar-local.
(edebug-make-before-and-after-form, edebug-make-after-form):
Use backquote.
(edebug-args, edebug-value, edebug-after-index, edebug-arg-mode):
Not dynamically scoped any more.
(edebug--enter-trace): Add arguments `function' and `args'.
Rename from edebug-enter-trace.
(edebug-enter): Call it accordingly. Bind edebug-function explicitly.
(edebug--update-coverage): Add `after-index' and `value' args.
Rename from edebug-update-coverage.
(edebug-slow-after): Call it accordingly.
(edebug--recursive-edit): Add arg `arg-mode'. Rename from
edebug-recursive-edit.
(edebug--display): Call it accordingly. Add args `value',
`offset-index', and `arg-mode'. Rename from edebug-display.
(edebug-debugger, edebug): Call it accordingly.
(edebug-eval-display-list): Use dolist.
http://lists.gnu.org/archive/html/emacs-devel/2012-08/msg00811.html
* lisp/info.el (Info-search): Don't check for isearch-mode and
isearch-regexp before let-binding search-spaces-regexp to
Info-search-whitespace-regexp.
(Info-isearch-search): Let-bind Info-search-whitespace-regexp to
search-whitespace-regexp if isearch-lax-whitespace or
isearch-regexp-lax-whitespace is non-nil.
(Info-mode): Don't set local variable search-whitespace-regexp.
* src/keyboard.c (read_char, requeued_events_pending_p, Finput_pending_p)
(Fdiscard_input, quit_throw_to_read_char, init_keyboard)
(syms_of_keyboard): Remove support for unread-command-char.
* lisp/emacs-lisp/debug.el (debugger-outer-unread-command-char, debug)
(debugger-env-macro): Remove support for unread-command-char.
* lisp/ehelp.el (with-electric-help): Accept functions in
electric-help-form-to-execute.
(electric-help-execute-extended, electric-help-ctrl-x-prefix): Use it.
And replace unread-command-char -> unread-command-events.
* lisp/subr.el (set-temporary-overlay-map): Minimize slightly the impact of
the temporary map re-appearing on emulation-mode-map-alists.
* lisp/emacs-lisp/edebug.el (def-edebug-form-spec): Remove, it's been broken
since 22.1.
* emacs-lisp/debug.el (debugger-previous-window-height): New
variable.
(debug): When debugger-jumping-flag is non-nil try to restore
height of debugger window. (Bug#8789)
overriding-local-map and pre/post-command-hook here.
(edebug-recursive-edit): Do it here instead.
(edebug-outside-unread-command-char): Remove all uses of
unread-command-char.
Fixes: debbugs:12345
(replace-lax-whitespace, query-replace-regexp)
(query-replace-regexp-eval, replace-regexp): Doc fix.
(perform-replace, replace-highlight): Let-bind
isearch-lax-whitespace to replace-lax-whitespace and
isearch-regexp-lax-whitespace to replace-regexp-lax-whitespace.
* lisp/isearch.el (isearch-query-replace): Let-bind
replace-lax-whitespace to isearch-lax-whitespace and
replace-regexp-lax-whitespace to
isearch-regexp-lax-whitespace.
Fixes: debbugs:10885
* lisp/replace.el (query-replace-map): Bind four new symbols for
requesting window scrolling.
* lisp/subr.el (y-or-n-p): Handle the window-scrolling bindings in
query-replace-map.
* lisp/custom.el (custom-theme-load-confirm): Use y-or-n-p.
* lisp/window.el (scroll-other-window-down): Make the arg optional.
* lisp/emacs-lisp/map-ynp.el (map-y-or-n-p): Don't bind scrolling keys
since they are now in query-replace-map.
* doc/lispref/minibuf.texi (Yes-or-No Queries): Document recentering and
scrolling in y-or-n-p. Remove gratuitous example.
* doc/lispref/searching.texi (Search and Replace): Document window scrolling
entries in query-replace-map.
Fixes: debbugs:8948
not just expect to be at its beginning. Adjust callees.
Succeed when do-end block has no space before the pipe character.
(ruby-brace-to-do-end): When the original block is one-liner,
convert to multiline. Reindent the result.
* test/automated/ruby-mode-tests.el:
(ruby-toggle-block-to-multiline): New test.
(ruby-should-indent-buffer, ruby-toggle-block-to-do-end)
(ruby-toggle-block-to-brace): Use buffer-string.
if register contains text so that `C-x r +' can now be
used for appending to a text register.
(register): New group.
(register-separator): New user option.
(append-to-register, prepend-to-register): Add separator based on
`register-separator.
* doc/emacs/regs.texi (Text Registers): `C-x r +' can now be used instead of
M-x append-to-register. New option `register-separator'.
(Number Registers): Mention that `C-x r +' is polymorphic.
Fixes: debbugs:12217
* window.el (display-buffer-in-previous-window): New buffer
display action function.
* emacs-lisp/debug.el (debugger-bury-or-kill): New option.
(debugger-previous-window): New variable.
(debug): Rewrite using display-buffer-in-previous-window,
quit-restore-window and debugger-bury-or-kill. (Bug#8789)
default-directory is remote, create temp file on remote
filesystem.
(python-shell-send-file): When file is remote, pass local view of
file paths to remote Python interpreter. (Bug#12340)
* lisp/subr.el (buffer-narrowed-p): New function.
* lisp/ses.el (ses-widen):
* lisp/simple.el (count-words--buffer-message):
* lisp/net/browse-url.el (browse-url-of-buffer): Use it
* lisp/simple.el (count-words-region): Don't signal an error if there
is a non-nil prefix arg and the mark is not set.
* doc/lispref/positions.texi (Narrowing): Document buffer-narrowed-p.
ruby-beginning-of-indent, simplify, allow all keywords to have
indentation before them.
(ruby-beginning-of-indent): Adjust for above. Search until the
found point is not inside a string or comment.
(ruby-font-lock-keywords): Allow symbols to start with "@"
character, give them higher priority than variables.
(ruby-syntax-propertize-function)
(ruby-font-lock-syntactic-keywords): Remove the "not comments"
matchers. Expression expansions are not comments when inside a
string, and there comment syntax status is irrelevant.
(ruby-match-expression-expansion): New function. Check that
expression expansion is inside a string, and it's not escaped.
(ruby-font-lock-keywords): Use it.
* test/automated/ruby-mode-tests.el: New tests (Bug#11613).
The add-face function has been added gnus-compat.el, but is not in
Emacs; this leaves Gnus in an unusable state.
* lisp/gnus/gnus-salt.el (gnus-tree-highlight-node):
* lisp/gnus/gnus-sum.el (gnus-summary-highlight-line):
* lisp/gnus/gnus-group.el (gnus-group-highlight-line): Revert use of add-face.
* lisp/gnus/gnus-util.el (gnus-put-text-property-excluding-characters-with-faces): Restore.
* progmodes/vhdl-mode.el (vhdl-speedbar-initialize): Don't use
obsolete alias speedbar-key-map.
(vhdl-doc-variable, vhdl-doc-mode): Use called-interactively-p.
(vhdl-index-menu-init): Don't use obsolete variable font-lock-maximum-size.
(query-replace, query-replace-regexp, query-replace-regexp-eval)
(replace-string, replace-regexp): Mention it in docstrings.
(perform-replace, replace-highlight): Let-bind
isearch-lax-whitespace and isearch-regexp-lax-whitespace according
to the values of replace-lax-whitespace and regexp-flag.
Don't let-bind search-whitespace-regexp.
* lisp/isearch.el (isearch-query-replace): Let-bind
replace-lax-whitespace instead of let-binding
replace-search-function and replace-re-search-function.
(isearch-lazy-highlight-search): Let-bind isearch-lax-whitespace
and isearch-regexp-lax-whitespace to lazy-highlight variables.
(isearch-toggle-symbol): Set isearch-regexp to nil
in isearch-word mode (like in isearch-toggle-word).
Fixes: debbugs:10885
* lisp/replace.el (replace-search-function)
(replace-re-search-function): Set default values to nil.
(perform-replace): Let-bind isearch-related variables based on
replace-related values, call `isearch-search-fun' and let-bind
the result to `search-function'. Remove code that sets
`search-function' and `search-string' separately for
`delimited-flag'.
(replace-highlight): Add new argument `delimited-flag' and
rename other arguments to the names used in `perform-replace'.
Let-bind `isearch-word' to the argument `delimited-flag'.
* gnus-score.el (gnus-score-decode-text-parts): Use #' for
mm-text-parts used in labels macro to make it work with XEmacs 21.5.
* gnus-util.el (gnus-string-prefix-p): New function, an alias to
string-prefix-p in Emacs >=23.2.
* nnmaildir.el (nnmaildir--ensure-suffix, nnmaildir--add-flag)
(nnmaildir--remove-flag, nnmaildir--scan): Use gnus-string-match-p
instead of string-match-p.
(nnmaildir--scan): Use gnus-string-prefix-p instead of string-prefix-p.
2012-09-05 Magnus Henoch <magnus.henoch@gmail.com>
* nnmaildir.el (nnmaildir--article-set-flags): Fix compilation error.
2012-09-05 Martin Stjernholm <mast@lysator.liu.se>
* gnus-demon.el (gnus-demon-init): Fixed regression when IDLE is t and
TIME is set.
2012-09-05 Juri Linkov <juri@jurta.org>
* gnus-group.el (gnus-read-ephemeral-bug-group): Allow opening more
than one group at a time (bug#11961).
2012-09-05 Julien Danjou <julien@danjou.info>
* gnus-srvr.el (gnus-server-open-server): Don't message on failure:
this hide the real reason with a message giving absolutely no hint.
2012-09-05 Lars Ingebrigtsen <larsi@gnus.org>
* gnus-group.el (gnus-group-mark-article-read): Propagate the read mark
to the backend (bug#11804).
* message.el (message-insert-newsgroups): Don't insert newsgroup
duplicates (bug#12275).
2012-09-05 John Wiegley <johnw@newartisans.com>
* gnus.el (gnus-expand-group-parameters): Allow regexp substitutions in
sieve rules.
2012-09-05 Jan Tatarik <jan.tatarik@gmail.com>
* gnus-score.el (gnus-score-decode-text-parts): Use #' for the local
function.
* gnus-logic.el (gnus-advanced-body): Allow scoring on decoded bodies.
* gnus-score.el (gnus-score-decode-text-parts): Ditto.
2012-09-05 Magnus Henoch <magnus.henoch@gmail.com>
* nnmaildir.el: Make nnmaildir understand and write maildir flags.
That is, rename files from "unique:2," to "unique:2,S" for "seen", etc.
This should make nnmaildir more usable with offlineimap.
* src/lread.c (readevalloop): Call internal-macroexpand-for-load to perform
eager (load-time) macro-expansion.
* src/lisp.mk (lisp): Add macroexp.
* lisp/loadup.el: Load macroexp. Remove hack.
* lisp/emacs-lisp/macroexp.el (macroexp--eval-if-compile): New function.
(macroexp--expand-all): Use it to get better warnings.
(macroexp--backtrace, macroexp--trim-backtrace-frame)
(internal-macroexpand-for-load): New functions.
(macroexp--pending-eager-loads): New var.
(emacs-startup-hook): New hack to replace one in loadup.el.
* lisp/emacs-lisp/cl-macs.el (cl--compiler-macro-list*)
(cl--compiler-macro-cXXr): Move to top, before they can be used.
(cl-psetf): Simplify.
(cl-defstruct): Add indent rule.
http://lists.gnu.org/archive/html/emacs-devel/2012-09/msg00008.html
* lisp/isearch.el (search-whitespace-regexp): Doc fix.
Remove cons cell customization.
(isearch-mode-map): Bind "\M-s " to isearch-toggle-lax-whitespace.
(isearch-lax-whitespace, isearch-regexp-lax-whitespace):
New variables.
(isearch-forward, isearch-forward-regexp): Doc fix.
(isearch-toggle-lax-whitespace): New command.
(search-forward-lax-whitespace, search-backward-lax-whitespace)
(re-search-forward-lax-whitespace)
(re-search-backward-lax-whitespace): New functions.
(isearch-whitespace-regexp): Remove function.
(isearch-query-replace): Let-bind replace-search-function and
replace-re-search-function.
(isearch-occur): Let-bind search-spaces-regexp according to the
value of isearch-lax-whitespace and isearch-regexp-lax-whitespace.
(isearch-quote-char): Check isearch-regexp-lax-whitespace in the
condition for C-q SPC.
(isearch-search-fun-default): Use new functions mentioned above.
(isearch-search-forward, isearch-search-backward): Remove functions.
(isearch-search): Don't let-bind search-spaces-regexp.
(isearch-lazy-highlight-space-regexp): Remove variable.
(isearch-lazy-highlight-lax-whitespace)
(isearch-lazy-highlight-regexp-lax-whitespace): New variables.
(isearch-lazy-highlight-new-loop): Use them.
(isearch-lazy-highlight-search): Don't let-bind search-spaces-regexp.
* lisp/term.el: (term-mode-map): Use easymenu for In/Out, Complete menus.
(term-pager-break-map): Initialize in the defvar.
(term-terminal-menu, term-signals-menu): Define with easymenu.
(term-terminal-menu): Also show it in line-mode.
(term-pager-menu): New, extracted from term-process-pager.
(term-mode, term-char-mode, term-process-pager): Use easymenu-add.
(term-update-mode-line): Propertize line/char and page items.
(term-process-pager): Move keymap initialization elsewhere.
Fixes: debbugs:11957
* window.el (switch-to-prev-buffer): Handle additional values of
BURY-OR-KILL argument. Don't switch in minibuffer window.
(switch-to-next-buffer): Don't switch in minibuffer window.
(quit-restore-window): New function based on quit-window.
Handle additional values of former KILL argument.
(quit-window): Call quit-restore-window with appropriate
interpretation of KILL argument.
(display-buffer-below-selected): New buffer display action
function.
* doc/lispref/numbers.texi (Random Numbers): Document new behavior of
the calls (random) and (random STRING).
* etc/NEWS: Document new behavior of (random), (random "string").
* lisp/play/5x5.el, lisp/play/animate.el, lisp/play/cookie1.el:
* lisp/play/dissociate.el, lisp/play/doctor.el, lisp/play/dunnet.el:
* lisp/play/gomoku.el, lisp/play/landmark.el, lisp/play/mpuz.el:
* lisp/play/tetris.el, lisp/play/zone.el:
* lisp/calc/calc-comb.el (math-init-random-base):
* lisp/play/blackbox.el (bb-init-board):
* lisp/play/life.el (life):
* lisp/server.el (server-use-tcp):
* lisp/type-break.el (type-break):
Remove unnecessary call to (random t).
* lisp/net/sasl.el (sasl-unique-id-function):
Change (random t) to (random), now that the latter is more random.
* lisp/play/life.el (life-initialized): Remove no-longer-needed var.
* lisp/gnus/gnus-sync.el (gnus-sync-lesync-setup):
* lisp/gnus/message.el (message-canlock-generate, message-unique-id):
Change (random t) to (random), now that the latter is more random.
* lisp/org/org-id.el (org-id-uuid):
Change (random t) to (random), now that the latter is more random.
* src/emacs.c (main): Call init_random.
* src/fns.c (Frandom): Set the seed from a string argument, if given.
Remove long-obsolete Gentzel cruft.
* src/lisp.h, src/sysdep.c (seed_random): Now takes address and size, not long.
(init_random): New function.
* progmodes/gdb-mi.el (gdb-display-buffer-other-frame-action): New
variable, replacing gdb-frame-parameters.
(gdb-frame-io-buffer, gdb-frame-breakpoints-buffer)
(gdb-frame-threads-buffer, gdb-frame-memory-buffer)
(gdb-frame-disassembly-buffer, gdb-frame-stack-buffer)
(gdb-frame-locals-buffer, gdb-frame-registers-buffer): Use it.
(def-gdb-frame-for-buffer): Macro deleted. It is easier to define
the functions directly with gdb-display-buffer-other-frame-action.
(gdb-display-breakpoints-buffer, gdb-display-threads-buffer)
(gdb-display-memory-buffer, gdb-display-disassembly-buffer)
(gdb-display-stack-buffer, gdb-display-locals-buffer)
(gdb-display-registers-buffer): Define directly.
(def-gdb-display-buffer): Macro deleted.
(gdb-display-buffer): Remove second and third args, callers don't
use them. Defer to the default display-buffer behavior, apart
from making windows dedicated.
(gdb-setup-windows): Don't call display-buffer unnecessarily.
* window.el (display-buffer-pop-up-frame): Handle a
pop-up-frame-parameters alist entry.
(display-buffer): Document it.
* progmodes/gud.el (gud-display-line): Just use display-buffer.
* lisp/isearch.el (search-whitespace-regexp): Make string and nil
values apply to both ordinary and regexp search. Allow a cons
cell value to distinguish between the two.
(isearch-whitespace-regexp, isearch-search-forward)
(isearch-search-backward): New functions.
(isearch-occur, isearch-search-fun-default, isearch-search)
(isearch-lazy-highlight-new-loop): Use them.
(isearch-forward, isearch-forward-regexp): Doc fix.
* window.el (window--even-window-heights): Even heights when
WINDOW and the selected window form a vertical combination.
(display-buffer-use-some-window): Provide that window used gets
sized back by quit-window. (Bug#11880) and (Bug#12091)
* window.el (display-buffer-in-atom-window, window--major-non-side-window)
(window--major-side-window, display-buffer-in-major-side-window)
(delete-side-window, display-buffer-in-side-window): New
functions.
(window--side-check, window-deletable-p, delete-window)
(delete-other-windows, split-window): Handle side windows and
atomic windows appropriately.
(window--display-buffer): Call display-buffer-record-window also
when the window buffer did not change.
* window.el (walk-window-tree, window-with-parameter): New
optional argument MINIBUF to control whether these functions
should run on the minibuffer window.
(window-at-side-list): Don't operate on minibuffer window.
(window-in-direction): Simplify and rewrite doc-string.
* window.c (Fwindow_point): For the selected window always return
the position of its buffer's point.
(Fset_window_point): For the selected window always go in its
buffer to the specified position.
* window.el (window-point-1, set-window-point-1): Remove.
(window-in-direction, record-window-buffer)
(set-window-buffer-start-and-point, split-window-below)
(window--state-get-1, display-buffer-record-window): Replace
calls to window-point-1 and set-window-point-1 by calls to
window-point and set-window-point respectively.
* lisp/calendar/cal-tex.el (cal-tex-filofax-paper): New function.
(cal-tex-cursor-filofax-year, cal-tex-cursor-filofax-2week)
(cal-tex-cursor-filofax-week, cal-tex-cursor-filofax-daily): Use it.
(cal-tex-weekly-paper): New function.
(cal-tex-cursor-week, cal-tex-cursor-week2)
(cal-tex-cursor-week-iso, cal-tex-cursor-week-monday)
(cal-tex-cursor-day): Use it.
* lisp/calendar/cal-tex.el (cal-tex-cursor-week-at-a-glance)
(cal-tex-cursor-filofax-week): Remove leading blank page.
(Were these supposed to serve some purpose? Printing?)
* lisp/calendar/cal-tex.el (cal-tex-cursor-week-at-a-glance):
Add autoload cookie.
For now at least, don't use color, since no other cal-tex function does.
(info-insert-file-contents): Add file attributes to
`Info-file-attributes'. Clear the caches `Info-index-nodes' and
`Info-toc-nodes' when previous modtime of the Info file is less
than new modtime.
(Info-toc-nodes, Info-index-nodes): Move definitions up to the top
of info.el.
Fixes: debbugs:12230
* lisp/calendar/diary-lib.el (diary-include-files, diary-sexp-entry):
* lisp/calendar/holidays.el (calendar-holiday-list):
Report errors with display-warning rather than beep'n'sleep.
* erc.el (erc-display-message): Abstract message hiding decision
to new function erc-hide-current-message-p.
(erc-lurker): New customization group.
(erc-lurker-state, erc-lurker-trim-nicks, erc-lurker-ignore-chars)
(erc-lurker-hide-list, erc-lurker-cleanup-interval)
(erc-lurker-threshold-time): New variables.
(erc-lurker-maybe-trim, erc-lurker-initialize, erc-lurker-cleanup)
(erc-hide-current-message-p, erc-canonicalize-server-name)
(erc-lurker-update-status, erc-lurker-p): New functions. Together
they maintain state about which users have spoken in the last
erc-lurker-threshold-time, with all other users being considered
lurkers whose messages of types in erc-lurker-hide-list will not
be displayed by erc-display-message.
properties, instead of hard-coding these properties' special handling.
* lisp/simple.el (yank-handled-properties): New defcustom.
(yank-excluded-properties): Add font-lock-face and category.
(yank): Doc fix.
* lisp/subr.el (remove-yank-excluded-properties): Obey
yank-handled-properties. The special handling of font-lock-face
and category is now done this way, instead of being hard-coded.
(insert-for-yank-1): Remove font-lock-face handling.
(yank-handle-font-lock-face-property)
(yank-handle-category-property): New function.
This resembles the 2001-05-07 change to rmail-output-read-rmail-file-name,
which was never copied to rmail-output-read-file-name.
It's more complicated now due to Rmail's buffer swapping.
* lisp/mail/rmailout.el (rmail-output-read-file-name):
Check rmail-output-file-alist against the full message body
in the correct rmail buffer.
* lisp/mail/rmail.el: Comment.
* mouse.el (mouse-appearance-menu): If x-select-font returns a
font spec, set the font directly.
* xfaces.c (merge_face_vectors): If the target font specfies a
font spec, make the font's attributes take precedence over
directly-specified attributes.
(merge_face_ref): Recognize :font.
Fixes: debbugs:3228
* lisp/progmodes/subword.el (subword-forward-function)
(subword-backward-function, subword-forward-regexp, subword-backward-regexp):
New variables.
(subword-forward, subword-forward-internal, subword-backward-internal):
Use new variables, eg so that different "word" definitions can be easily used.
Fixes: debbugs:11411
for composite selectors.
* lisp/vc/vc.el (vc-diff-build-argument-list-internal): Don't prevent
operation just because we can't find a previous revision.
* gtkutil.c (xg_get_font): Rename from xg_get_font_name. When
using the new font chooser, use gtk_font_chooser_get_font_desc to
extract the font descriptor instead of just the font name. In
that case, return a font spec instead of a string.
(x_last_font_name): Move to this file from xfns.c.
* xfns.c (Fx_select_font): The return value can also be a font
spec. Move x_last_font_name management to gtkutil.c.
* xfaces.c: Make font weight and style symbols non-static.
* lisp/frame.el (set-frame-font): Accept font objects.
(Man-reverse-face): Remove variables.
(Man-overstrike, Man-underline, Man-reverse): New faces.
(Man-fontify-manpage): Use them instead of the variables.
(Man-cleanup-manpage): Comment change.
(Man-ansi-color-map): New variable.
(Man-fontify-manpage): Use it.
Call ansi-color-apply-on-region to replace ad hoc code.
Fixes: debbugs:12147
* lisp/ansi-color.el (ansi-colors): Doc fix.
(ansi-color-context, ansi-color-context-region): Doc fix.
(ansi-color--find-face): New function.
(ansi-color-apply, ansi-color-apply-on-region): Use it.
Rename the local variable `face' to `codes' since it is now a list of
ansi codes. Doc fix.
(ansi-color-get-face): Remove.
(ansi-color-parse-sequence): New function, derived from
ansi-color-get-face.
(ansi-color-apply-sequence): Use it. Rewrite, and support ansi
codes 22-27.
Fixes: debbugs:12146
lisp/tooltip.el (tooltip-identifier-from-point): Don't treat tokens
inside comments and strings as identifiers.
lisp/progmodes/gud.el (gud-tooltip-print-command): Quote the
expression to evaluate. This allows to evaluate expressions with
embedded whitespace.
(gud-tooltip-tips): Add a blank before the newline in the
message-box text, for the benefit of message-box emulation on
MS-Windows.
lisp/progmodes/gdb-mi.el (gdb-tooltip-print): Don't ignore error
messages from GDB, pop them up in a tooltip to give feedback to
user.
(gdb-tooltip-print-1): Quote the expression to evaluate. This
allows to evaluate expressions with embedded whitespace.
(gdb-inferior-io--init-proc): Don't send "-inferior-tty" command
if the TTY name is nil or empty (which happens when communicating
with the inferior via pipes, e.g. on MS-Windows).
(gdb-internals): If GDB sends a "&\n" empty debugging message,
don't send that to the GUD buffer.
doc/emacs/building.texi (Debugger Operation): Correct and improve
documentation of the GUD Tooltip mode.
