diff --git a/doc/lispref/symbols.texi b/doc/lispref/symbols.texi
index 37fb3b49e43..6cddd50c920 100644
--- a/doc/lispref/symbols.texi
+++ b/doc/lispref/symbols.texi
@@ -106,11 +106,11 @@ reference any object.  (This is not the same thing as holding the symbol
 a value cell that is void results in an error, such as @samp{Symbol's
 value as variable is void}.
 
-  Because each symbol has separate value and function cells, variables
-names and function names do not conflict.  For example, the symbol
-@code{buffer-file-name} has a value (the name of the file being
-visited in the current buffer) as well as a function definition (a
-primitive function that returns the name of the file):
+  Because each symbol has separate value and function cells, the names
+of variables and functions do not conflict.  For example, the symbol
+@code{buffer-file-name} has a value (the name of the file being visited
+in the current buffer) as well as a function definition (a primitive
+function that returns the name of the file):
 
 @example
 buffer-file-name
diff --git a/doc/misc/gnus.texi b/doc/misc/gnus.texi
index cfcc8039165..239aa43703f 100644
--- a/doc/misc/gnus.texi
+++ b/doc/misc/gnus.texi
@@ -17204,7 +17204,7 @@ filename is unrelated to the article number in Gnus. @code{nnmaildir}
 also stores the equivalent of @code{nnml}'s overview files in one file
 per article, so it uses about twice as many inodes as @code{nnml}.
 (Use @code{df -i} to see how plentiful your inode supply is.)  If this
-slows you down or takes up very much space, a non-block-structured
+slows you down or takes up very much space, use a non-block-structured
 file system.
 
 Since maildirs don't require locking for delivery, the maildirs you use
diff --git a/etc/NEWS.30 b/etc/NEWS.30
index fbfb9086430..ec14e447859 100644
--- a/etc/NEWS.30
+++ b/etc/NEWS.30
@@ -193,6 +193,9 @@ For example, Flymake's backend for Emacs Lisp consults this option
 and disables itself with an "untrusted content" warning if the file
 is not listed.
 
+Emacs Lisp authors should note that a major or minor mode must never set
+this option to the ':all' value.
+
 This option is used to fix CVE-2024-53920.  See below for details.
 
 ** Emacs now supports Unicode Standard version 15.1.
diff --git a/lisp/bookmark.el b/lisp/bookmark.el
index c86101217d6..e8ad0cee31d 100644
--- a/lisp/bookmark.el
+++ b/lisp/bookmark.el
@@ -1586,6 +1586,8 @@ confirmation."
   (when (or no-confirm
             (yes-or-no-p "Permanently delete all bookmarks? "))
     (bookmark-maybe-load-default-file)
+    (dolist (bm bookmark-alist)
+      (bookmark--remove-fringe-mark bm))
     (setq bookmark-alist-modification-count
           (+ bookmark-alist-modification-count (length bookmark-alist)))
     (setq bookmark-alist nil)
diff --git a/lisp/files.el b/lisp/files.el
index 5ff40c335d7..e5fde17513f 100644
--- a/lisp/files.el
+++ b/lisp/files.el
@@ -721,11 +721,12 @@ enabled (for example, when it is added to a mode hook).
 Each element of the list should be a string:
 - If it ends in \"/\", it is considered as a directory name and means that
   Emacs should trust all the files whose name has this directory as a prefix.
-- else it is considered as a file name.
+- Otherwise, it is considered a file name.
 Use abbreviated file names.  For example, an entry \"~/mycode/\" means
 that Emacs will trust all the files in your directory \"mycode\".
 This variable can also be set to `:all', in which case Emacs will trust
-all files, which opens a gaping security hole."
+all files, which opens a gaping security hole.  Emacs Lisp authors
+should note that this value must never be set by a major or minor mode."
   :type '(choice (repeat :tag "List" file)
                  (const :tag "Trust everything (DANGEROUS!)" :all))
   :version "30.1")
diff --git a/lisp/ielm.el b/lisp/ielm.el
index 561185a738a..b3cd02b4dc0 100644
--- a/lisp/ielm.el
+++ b/lisp/ielm.el
@@ -580,7 +580,6 @@ Customized bindings may be defined in `ielm-map', which currently contains:
        ielm-fontify-input-enable
        (comint-fontify-input-mode))
 
-  (setq-local trusted-content :all)
   (setq comint-prompt-regexp (concat "^" (regexp-quote ielm-prompt)))
   (setq-local paragraph-separate "\\'")
   (setq-local paragraph-start comint-prompt-regexp)
@@ -684,7 +683,8 @@ See `inferior-emacs-lisp-mode' for details."
     (unless (comint-check-proc buf-name)
       (with-current-buffer (get-buffer-create buf-name)
         (unless (zerop (buffer-size)) (setq old-point (point)))
-        (inferior-emacs-lisp-mode)))
+        (inferior-emacs-lisp-mode)
+        (setq-local trusted-content :all)))
     (pop-to-buffer-same-window buf-name)
     (when old-point (push-mark old-point))))
 
diff --git a/lisp/progmodes/eglot.el b/lisp/progmodes/eglot.el
index 76648f310e6..4114f21bc75 100644
--- a/lisp/progmodes/eglot.el
+++ b/lisp/progmodes/eglot.el
@@ -325,6 +325,7 @@ automatically)."
     ((csharp-mode csharp-ts-mode)
      . ,(eglot-alternatives
          '(("omnisharp" "-lsp")
+           ("OmniSharp" "-lsp")
            ("csharp-ls"))))
     (purescript-mode . ("purescript-language-server" "--stdio"))
     ((perl-mode cperl-mode)
diff --git a/lisp/progmodes/elisp-mode.el b/lisp/progmodes/elisp-mode.el
index 078563a123c..d61cf4684f9 100644
--- a/lisp/progmodes/elisp-mode.el
+++ b/lisp/progmodes/elisp-mode.el
@@ -1340,8 +1340,7 @@ Semicolons start comments.
 
 \\{lisp-interaction-mode-map}"
   :abbrev-table nil
-  (setq-local lexical-binding t)
-  (setq-local trusted-content :all))
+  (setq-local lexical-binding t))
 
 ;;; Emacs Lisp Byte-Code mode
 
diff --git a/lisp/simple.el b/lisp/simple.el
index d3005c69b0c..e1c0dd4a092 100644
--- a/lisp/simple.el
+++ b/lisp/simple.el
@@ -11249,7 +11249,9 @@ too short to have a dst element.
           (when initial-scratch-message
             (insert (substitute-command-keys initial-scratch-message))
             (set-buffer-modified-p nil))
-          (funcall initial-major-mode))
+          (funcall initial-major-mode)
+          (when (eq initial-major-mode 'lisp-interaction-mode)
+            (setq-local trusted-content :all)))
         scratch)))
 
 (defun scratch-buffer ()
diff --git a/lisp/subr.el b/lisp/subr.el
index 65b50dc5598..12f4ec38b78 100644
--- a/lisp/subr.el
+++ b/lisp/subr.el
@@ -3547,13 +3547,15 @@ causes it to evaluate `help-form' and display the result."
     char))
 
 (defun sit-for (seconds &optional nodisp)
-  "Redisplay, then wait for SECONDS seconds.  Stop when input is available.
+  "Redisplay, then wait for SECONDS seconds; stop when input is available.
 SECONDS may be a floating-point value.
 \(On operating systems that do not support waiting for fractions of a
 second, floating-point values are rounded down to the nearest integer.)
 
-If optional arg NODISP is t, don't redisplay, just wait for input.
-Redisplay does not happen if input is available before it starts.
+If there's pending input, return nil immediately without redisplaying
+and without waiting.
+If optional arg NODISP is t, don't redisplay, just wait for input (but
+still return nil immediately if there's pending input).
 
 Value is t if waited the full time with no input arriving, and nil otherwise."
   ;; This used to be implemented in C until the following discussion: