bug#45330: 28.0.50; debbugs-gnu: Can't select reports before having started Gnus

[Michael Heerdegen]

Hi,

sorry if I had already reported this and a fix is on the way.  Or had it
been fixed and has reappeared, or even my fault this time?

I'm doing something like

  (debbugs-gnu-search "debbugs" '((subject . "debbugs")) nil nil nil)

and when I hit RET over a bug's line I get this error:

| Debugger entered--Lisp error: (wrong-type-argument integer-or-marker-p nil)
|   gnus-summary-goto-subject(0)
|   gnus-summary-last-subject()
|   gnus-summary-highlight-line()
|   gnus-summary-insert-line([0 "" "" "05 Apr 2001 23:33:09 +0400" "" "" 0 0 "" 
nil] 0 nil t 90 t nil "" nil 1)
|   gnus-update-summary-mark-positions()
|   gnus-summary-read-group-1("nndoc+ephemeral:bug#36903" t t nil nil nil)
|   gnus-summary-read-group("nndoc+ephemeral:bug#36903" t t nil nil nil nil)
|   gnus-group-read-group(t t "nndoc+ephemeral:bug#36903" nil)
|   gnus-group-read-ephemeral-group("nndoc+ephemeral:bug#36903" (nndoc 
"/tmp/gnus-temp-group-lGIifE" (nndoc-article-type mbox)) nil (#<buffer 
*"debbugs" Bugs*> . #<window-configuration>))
|   gnus-read-ephemeral-bug-group((36903) 
"https://debbugs.gnu.org/cgi/bugreport.cgi?bug=%s;m..."; (#<buffer *"debbugs" 
Bugs*> . #<window-configuration>))
|   gnus-read-ephemeral-emacs-bug-group((36903) (#<buffer *"debbugs" Bugs*> . 
#<window-configuration>))
|   debbugs-gnu-read-emacs-bug-with-gnus(36903 ((cache_time . 1608439370.59222) 
(last_modified . 1573129444) (done . "Eric Abrahamsen 
<eric@ericabrahamsen.net>") (summary) (forwarded) (source . "unknown") 
(log_modified . 1573129444) (blockedby) (found_versions "27.0.50") 
(fixed_versions) (subject . "27.0.50; gnus registry vs. debbugs") (archived . 
t) (affects) (package "emacs") (location . "archive") (originator . "Michael 
Heerdegen <michael_heerdegen@web.de>") (date . 1564816382) (severity . 
"normal") (owner) (keywords) (fixed) (found (item (key . "27.0.50") (value))) 
(bug_num . 36903) (fixed_date) (id . 36903) (tags) (unarchived) (msgid . 
"<87pnlmen9q.fsf@web.de>") (pending . "done") (blocks) (found_date) 
(mergedwith)) nil)
|   debbugs-gnu-select-report()
|   funcall-interactively(debbugs-gnu-select-report)
|   call-interactively(debbugs-gnu-select-report nil nil)
|   command-execute(debbugs-gnu-select-report)

Annoying.  When I had started Gnus before, this doesn't happen.

TIA,

Michael.