Merge from origin/emacs-28

d53c999b4a Further vcs-cvs/rcs-responsible-p updates from master
dc3d1628ec ; * src/sysdep.c: Fix mistake in previous commit
855e15dbf1 Fix builds on older versions of macOS
9da744e450 Fix documentation of Outline minor mode options
a8bb12ab05 Improve discoverability of 'insert-directory-program'
3f166bdf44 ; * etc/PROBLEMS: Describe MS-Windows issues with fonts.  ...
803ac857ee Fix cursor motion under truncate-lines with Flymake fringe...

# Conflicts:
#	etc/PROBLEMS
#	lisp/outline.el
#	src/sysdep.c

diff --cc etc/PROBLEMS
index 394c6c223da48ed01293f2a6e6f67449e8837c96,2a26dfaec4d238010bc9dfa333ae726b2953c344..482c29f3301d1145160c34c70a2f7f0e2b44d400
--- 1/etc/PROBLEMS
--- 2/etc/PROBLEMS
+++ b/etc/PROBLEMS
@@@ -1049,6 -1049,6 +1049,15 @@@ index 5504171..431adf8 10064
  If you can't modify that file directly, copy it to the directory
  ~/.m17n.d/ (create it if it doesn't exist), and apply the patch.
  
++** On Haiku, some proportionally-spaced fonts display with artifacting.
++
++This is a Haiku bug: https://dev.haiku-os.org/ticket/17229, which can
++be remedied by using a different font that does not exhibit this
++problem, or by configuring Emacs '--with-be-cairo'.
++
++So far, Bitstream Charter and Noto Sans have been known to exhibit
++this problem, while Noto Sans Display is known to not do so.
++
  ** On MS-Windows, some characters display as boxes with hex code.
  
  Also, some characters could display with wrong fonts.

diff --cc lisp/dired.el
Simple merge

diff --cc lisp/files.el
Simple merge

diff --cc lisp/outline.el
index 696d109f1eeabe983510229234052fe20f461aca,00a557ca4e88efab4974421076b5f5d839f496ce..9f73ca0d0c72dd17abf2989d48b1c2b7187f7cb0
--- 1/lisp/outline.el
--- 2/lisp/outline.el
+++ b/lisp/outline.el
@@@ -184,10 -191,9 +193,10 @@@ This option is only in effect when `out
                   (const :tag "Not at line beginning"
                          (lambda () (not (bolp))))
                   (const :tag "At line end" eolp)
-                  (function :tag "Custom filter"))
+                  (function :tag "Custom filter function"))
    :version "28.1")
  
 +(defvar outline-minor-mode-cycle)
  (defun outline-minor-mode-cycle--bind (map key binding &optional filter)
    (define-key map key
      `(menu-item
@@@ -371,30 -358,35 +380,35 @@@ After that, changing the prefix key req
           (set-default sym val)))
  
  (defcustom outline-minor-mode-cycle nil
-   "Enable cycling of headings in `outline-minor-mode'.
- When enabled, it puts a keymap with cycling keys on heading lines.
- When point is on a heading line, then typing `TAB' cycles between `hide all',
- `headings only' and `show all' (`outline-cycle').  Typing `S-TAB' on
- a heading line cycles the whole buffer (`outline-cycle-buffer').
- Typing these keys anywhere outside heading lines uses their default bindings."
+   "Enable visibility-cycling commands on headings in `outline-minor-mode'.
+ If enabled, typing `TAB' on a heading line cycles the visibility
+ state of that heading's body between `hide all', `headings only'
+ and `show all' (`outline-cycle'), and typing `S-TAB' on a heading
+ line likewise cycles the visibility state of the whole buffer
+ \(`outline-cycle-buffer').
+ Typing these keys anywhere outside heading lines invokes their default
+ bindings, per the current major mode."
    :type 'boolean
 +  :safe #'booleanp
    :version "28.1")
 -;;;###autoload(put 'outline-minor-mode-cycle 'safe-local-variable 'booleanp)
  
  (defcustom outline-minor-mode-highlight nil
-   "Highlight headings in `outline-minor-mode' using font-lock keywords.
- Non-nil value works well only when outline font-lock keywords
- don't conflict with the major mode's font-lock keywords.
- When t, it puts outline faces only if there are no major mode's faces
- on headings.  When `override', it completely overwrites major mode's
- faces with outline faces.  When `append', it tries to append outline
- faces to major mode's faces."
-   :type '(choice (const :tag "No highlighting" nil)
-                  (const :tag "Overwrite major mode faces" override)
-                  (const :tag "Append outline faces to major mode faces" append)
-                  (const :tag "Highlight separately from major mode faces" t))
+   "Whether to highlight headings in `outline-minor-mode' using font-lock keywords.
+ This option controles whether `outline-minor-mode' will use its font-lock
+ keywords to highlight headings, which could potentially conflict with
+ font-lock faces defined by the major mode.  Thus, a non-nil value will
+ work well only when there's no such conflict.
+ If the value is t, use outline faces only if there are no major mode's
+ font-lock faces on headings.  When `override', completely overwrite major
+ mode's font-lock faces with outline faces.  When `append', try to append
+ outline font-lock faces to those of major mode."
+   :type '(choice (const :tag "Do not use outline font-lock highlighting" nil)
+                  (const :tag "Overwrite major mode font-lock faces" override)
+                  (const :tag "Append outline font-lock faces to major mode's"
+                         append)
+                  (const :tag "Highlight with outline font-lock faces only if major mode doesn't" t))
 +  :safe #'symbolp
    :version "28.1")
 -;;;###autoload(put 'outline-minor-mode-highlight 'safe-local-variable 'symbolp)
  
  (defun outline-minor-mode-highlight-buffer ()
    ;; Fallback to overlays when font-lock is unsupported.

diff --cc lisp/vc/vc-sccs.el
Simple merge

diff --cc lisp/vc/vc.el
Simple merge

diff --cc src/indent.c
Simple merge