bug#67526: 30.0.50; Regression: gnus-group-prev-group fails to move to first group

[Simon Leinen]

In the current development version of Emacs (Git master branch),
gnus-group-prev-group (bound to the "P" key) in Gnus's group buffer
works as before, except when it is on the second newgroup line.  In this
case, the cursor stays put on the second line and refuses to move up to
the first.  The same is true for gnus-group-prev-unread-group (bound to
"p"), even when the first group has unread messages.

I suspect the issue lies in gnus-group-search-forward, which was
recently simplified by Eric Abrahamsen in commit
7304cc8a9ca8a7d19baaa24f0a72c7ad9a6a9716

Cheers,
-- 
Simon.

In GNU Emacs 30.0.50 (build 1, aarch64-apple-darwin22.6.0, NS
 appkit-2299.70 Version 13.6.1 (Build 22G313)) of 2023-11-27 built on
 macsl
Repository revision: 7a5c91a2831602c3cd961158cf0b6a876852d7ac
Repository branch: master
Windowing system distributor 'Apple', version 10.3.2299
System Description:  macOS 13.6.1

Configured using:
 'configure --verbose --with-imagemagick --with-cairo
 LIBXML2_CFLAGS=-I/opt/homebrew/opt/libxml2/include/libxml2
 'LIBXML2_LIBS=-L/opt/homebrew/opt/libxml2/lib -lxml2'
 --with-native-compilation 'LDFLAGS=-L/opt/homebrew/lib/gcc/current
 -L/opt/homebrew/lib -lgmp' CFLAGS=-I/opt/homebrew/include
 PKG_CONFIG_PATH=/opt/homebrew/lib/pkgconfig:/opt/homebrew/share/pkgconfig'

Configured features:
ACL GIF GLIB GNUTLS IMAGEMAGICK JPEG JSON LCMS2 LIBXML2 MODULES
NATIVE_COMP NOTIFY KQUEUE NS PDUMPER PNG RSVG SQLITE3 THREADS TIFF
TOOLKIT_SCROLL_BARS TREE_SITTER WEBP XIM ZLIB

Important settings:
  value of $LANG: en_US.UTF-8
  locale-coding-system: utf-8-unix

Major mode: Help

Minor modes in effect:
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  magit-auto-revert-mode: t
  csv-field-index-mode: t
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  tooltip-mode: t
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  font-lock-mode: t
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  line-number-mode: t
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  auto-compression-mode: t
  temp-buffer-resize-mode: t

Load-path shadows:
/Users/leinen/.emacs.d/elpa/transient-20230602.2121/transient hides 
/Applications/Emacs.app/Contents/Resources/lisp/transient
/Users/leinen/.emacs.d/elpa/auth-source-pass-20210210.1908/auth-source-pass 
hides /Applications/Emacs.app/Contents/Resources/lisp/auth-source-pass
/Users/leinen/.emacs.d/elpa/eglot-20220926.1235/eglot hides 
/Applications/Emacs.app/Contents/Resources/lisp/progmodes/eglot

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simple cl-generic indonesian philippine cham georgian utf-8-lang
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Memory information:
((conses 16 3134762 535482) (symbols 48 56061 1)
 (strings 32 542776 21641) (string-bytes 1 17547753)
 (vectors 16 207492) (vector-slots 8 3810397 458734)
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