bug#43036: 27.1; gnus: Newlines in Gcc folder names

[Enrico Scholz]

Beginning with gnus contained in emacs 27.1 (26.3 was ok), archiving
messages into multiple IMAP folders fails with messages like

| BAD Missing required argument to Select
| BAD Missing required argument to Create

This seems to be caused because gnus splits long Gcc: lines by '\n' and
keeps this '\n' as part of the group name.

E.g. with

| Gcc: nnimap+mail.XXX.de:INBOX.sent-mail nnimap+mail.XXX.de:INBOX 
nnfolder+archive:misc-mail

'strace' shows for the first folder (ok):

| read(0, "1526 SELECT \"INBOX.sent-mail\"\r\n", 4096) = 31

but for the second

| read(0, "1530 SELECT \"INBOX\n\"\r\n", 4096) = 22
                              ~~


Tracing such a message, tells that in

| (defun gnus-inews-do-gcc (&optional gcc)
| ...
|       (let ((gcc (or gcc (mail-fetch-field "gcc" nil t)))

'gcc' becomes

| "nnimap+mail.XXX.de:INBOX.sent-mail nnimap+mail.XXX.de:INBOX
|  nnfolder+archive:misc-mail"

and the newline after "INBOX" will be kept as part of the folder name.



Enrico

----------

In GNU Emacs 27.1 (build 1, x86_64-redhat-linux-gnu, GTK+ Version 2.24.32)
 of 2020-08-24 built on koji-builder3.intern.sigma-chemnitz.de
Windowing system distributor 'Fedora Project', version 11.0.12008000
System Description: Fedora 32 (Thirty Two)

Quit
nnimap+mail.cvg.de:INBOX.sent-mail nnimap+mail.cvg.de:INBOX
 nnfolder+archive:misc-mail
"nnimap+mail.cvg.de:INBOX.sent-mail nnimap+mail.cvg.de:INBOX
 nnfolder+archive:misc-mail"
Mark saved where search started
Making completion list...

Configured using:
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Configured features:
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/usr/share/emacs/27.1/lisp/org/org-lint
/home/ensc/.emacs.d/elpa/org-9.3.6/ob-forth hides 
/usr/share/emacs/27.1/lisp/org/ob-forth
/home/ensc/.emacs.d/elpa/org-9.3.6/ox-ascii hides 
/usr/share/emacs/27.1/lisp/org/ox-ascii
/home/ensc/.emacs.d/elpa/org-9.3.6/ob-octave hides 
/usr/share/emacs/27.1/lisp/org/ob-octave
/home/ensc/.emacs.d/elpa/org-9.3.6/ob-R hides 
/usr/share/emacs/27.1/lisp/org/ob-R
/home/ensc/.emacs.d/elpa/org-9.3.6/org-attach-git hides 
/usr/share/emacs/27.1/lisp/org/org-attach-git
/home/ensc/.emacs.d/elpa/org-9.3.6/org-pcomplete hides 
/usr/share/emacs/27.1/lisp/org/org-pcomplete
/home/ensc/.emacs.d/elpa/org-9.3.6/ob-scheme hides 
/usr/share/emacs/27.1/lisp/org/ob-scheme
/home/ensc/.emacs.d/elpa/org-9.3.6/ob-ref hides 
/usr/share/emacs/27.1/lisp/org/ob-ref
/home/ensc/.emacs.d/elpa/org-9.3.6/ol-mhe hides 
/usr/share/emacs/27.1/lisp/org/ol-mhe
/home/ensc/.emacs.d/elpa/org-9.3.6/ob-lob hides 
/usr/share/emacs/27.1/lisp/org/ob-lob
/home/ensc/.emacs.d/elpa/org-9.3.6/ob-matlab hides 
/usr/share/emacs/27.1/lisp/org/ob-matlab
/home/ensc/.emacs.d/elpa/org-9.3.6/org-clock hides 
/usr/share/emacs/27.1/lisp/org/org-clock
/home/ensc/.emacs.d/elpa/org-9.3.6/ob-haskell hides 
/usr/share/emacs/27.1/lisp/org/ob-haskell
/home/ensc/.emacs.d/elpa/org-9.3.6/org-attach hides 
/usr/share/emacs/27.1/lisp/org/org-attach
/home/ensc/.emacs.d/elpa/org-9.3.6/ob-vala hides 
/usr/share/emacs/27.1/lisp/org/ob-vala
/home/ensc/.emacs.d/elpa/org-9.3.6/ox-man hides 
/usr/share/emacs/27.1/lisp/org/ox-man
/usr/share/emacs/site-lisp/quilt hides ~/.emacs-config/lisp.emacs/quilt
/home/ensc/.emacs.d/elpa/tea-time-20120331.820/tea-time hides 
~/.emacs-config/lisp.emacs/tea-time
/usr/share/emacs/site-lisp/git/git hides ~/.emacs-config/lisp/git
/usr/share/emacs/site-lisp/bbdb/bbdb-pgp hides ~/.emacs-config/lisp/bbdb-pgp
/usr/share/emacs/site-lisp/psvn hides ~/.emacs-config/lisp/psvn

Features:
(shadow emacsbug edebug backtrace two-column iso-transl recentf
tree-widget eieio-opt find-func deuglify gnus-cus gnus-diary nndiary
gnus-draft gnus-fun gnus-html url-queue url-cache mm-url gnus-kill
gnus-logic gnus-mh mh-comp mh-scan mh-gnus mh-e mh-compat mh-buffers
mh-loaddefs gnus-registry registry eieio-base gnus-salt gnus-topic
gnus-uu yenc gnus-vm prev-next-buffer jka-compr bbdb-pgp pp vc-git
diff-mode cus-edit cl-print thingatpt help-fns radix-tree mailalias
footnote bbdb-message sendmail nnir shr-color color qp misearch
multi-isearch mule-util sort smiley gnus-cite mm-archive mail-extr
gnus-async gnus-bcklg gnus-dup gnus-ml disp-table nnagent nnml nndraft
nnmh nnfolder utf-7 git-gutter-fringe+ fringe-helper git-gutter+
git-commit with-editor transient cl-extra help-mode async-bytecomp async
server magit-git magit-section magit-utils log-edit pcvs-util add-log
dash company pcase vc-arch bbdb-gnus network-stream nsm gnus-agent
gnus-srvr gnus-score score-mode nnvirtual gnus-msg gnus-cache
ensc/gnus-init gnus-demon nntp bbdb-mua bbdb-com crm bbdb bbdb-site
timezone gnus-art mm-uu mml2015 mm-view mml-smime smime dig gnus-sum url
url-proxy url-expand url-methods url-history mailcap shr url-cookie
url-domsuf url-util svg dom gnus-group gnus-undo gnus-start gnus-cloud
nnimap nnmail mail-source utf7 netrc nnoo gnus-spec gnus-int gnus-range
message rmc puny dired dired-loaddefs rfc822 mml mml-sec epa derived epg
epg-config mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev
gmm-utils mailheader gnus-win gnus nnheader gnus-util rmail
rmail-loaddefs rfc2047 rfc2045 ietf-drums text-property-search
mail-utils mm-util mail-prsvr wid-edit tramp tramp-loaddefs trampver
tramp-integration files-x tramp-compat shell pcomplete comint ansi-color
ring parse-time iso8601 time-date ls-lisp url-privacy paren whitespace
cus-start cus-load finder-inf easy-mmode org-table org-keys org-compat
org-macs format-spec bindat xxx-cursor savehist filladapt ido delsel
speedbar sb-image ezimage dframe edmacro kmacro redo scroll-in-place
advice u-vm-color vm-autoloads vm-version vm-vars clang-rename
clang-include-fixer let-alist clang-format xml bbdb-loaddefs tex-site rx
cl info package easymenu browse-url url-handlers url-parse auth-source
cl-seq eieio eieio-core cl-macs eieio-loaddefs password-cache json
subr-x map url-vars seq byte-opt gv bytecomp byte-compile cconv
cl-loaddefs cl-lib tooltip eldoc electric uniquify ediff-hook vc-hooks
lisp-float-type mwheel term/x-win x-win term/common-win x-dnd tool-bar
dnd fontset image regexp-opt fringe tabulated-list replace newcomment
text-mode elisp-mode lisp-mode prog-mode register page tab-bar menu-bar
rfn-eshadow isearch timer select scroll-bar mouse jit-lock font-lock
syntax facemenu font-core term/tty-colors frame minibuffer cl-generic
cham georgian utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao
korean japanese eucjp-ms cp51932 hebrew greek romanian slovak czech
european ethiopic indian cyrillic chinese composite charscript charprop
case-table epa-hook jka-cmpr-hook help simple abbrev obarray
cl-preloaded nadvice loaddefs button faces cus-face macroexp files
text-properties overlay sha1 md5 base64 format env code-pages mule
custom widget hashtable-print-readable backquote threads dbusbind
inotify dynamic-setting system-font-setting font-render-setting
move-toolbar gtk x-toolkit x multi-tty make-network-process emacs)

Memory information:
((conses 16 539343 85311)
 (symbols 48 35987 2)
 (strings 32 144295 19633)
 (string-bytes 1 5358499)
 (vectors 16 57394)
 (vector-slots 8 1495179 131192)
 (floats 8 470 440)
 (intervals 56 12192 1248)
 (buffers 1000 79))

-- 
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Am Erlenwald 13           Geschaeftsfuehrer: Grit Freitag, Frank Pyritz
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