bug#73018: 31.0.50; wdired + replace-regexp only modifies the visible portion of the buffer

[Madhu]

In GNU Emacs 31.0.50 (build 2, x86_64-pc-linux-gnu, X toolkit, cairo
 version 1.18.0, Xaw3d scroll bars)
Repository revision: f1e29506822739208e5706b733cfd713c5f37cfd

Ref: https://lists.gnu.org/archive/html/emacs-devel/2024-09/msg00071.html

On carrying out the following steps

```
mkdir /dev/shm/test-foo -pv
for i in $(seq 1 40); do ln -sv /foo/$i /dev/shm/test-foo; done

(dired "/dev/shm/test-foo")
(wdired-change-to-wdired-mode)
(replace-regexp "foo" "bar")
```

It is seen that only the files in the visible portion of the buffer
are affeceted by the replace-regexp. The attached patch implements the
suggestion in
https://lists.gnu.org/archive/html/emacs-devel/2024-09/msg00079.html
and appears to fix the problem.

(However there still seems to be a boostrap related problem with
"Match data clobbered by buffer modification hooks" when wdired is
first loaded)

>From 05c8405a30a36098c55e4f31a1ec339719ccbcb3 Mon Sep 17 00:00:00 2001
From: Madhu <enometh@net.meer>
Date: Wed, 4 Sep 2024 06:55:44 +0530
Subject: [PATCH] * lisp/wdired.el: (wdired-change-to-wdired-mode): call
 font-lock-ensure  so replace-regexp with wdired-search-replace-filenames t
 works on the whole buffer.

---
 lisp/wdired.el | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lisp/wdired.el b/lisp/wdired.el
index 4b6a9c14b20..dd8b8640a89 100644
--- a/lisp/wdired.el
+++ b/lisp/wdired.el
@@ -264,6 +264,7 @@ wdired-change-to-wdired-mode
   ;; hidden partly, so we remove filename invisibility spec
   ;; temporarily to ensure filenames are visible for editing.
   (dired-filename-update-invisibility-spec)
+  (font-lock-ensure)
   (run-mode-hooks 'wdired-mode-hook)
   (message "%s" (substitute-command-keys
                 "Press \\[wdired-finish-edit] when finished \
-- 
2.46.0.27.gfa3b914457