Support state changing VC operations in dired-mode on files (bug#34949)

* lisp/vc/vc.el (vc-deduce-fileset): Don't error out when observer is nil.
(vc-dired-deduce-fileset): Add optional args 'state-model-only-files'
and 'observer'.  Check that all files are in a consistent state
when state-model-only-files is non-nil.  Error out on directories.

* lisp/vc/vc-dispatcher.el (vc-dispatcher-browsing): Check dired-mode
for derived-mode-p.

1 files changed, 5 insertions, 0 deletions

diff --git a/etc/NEWS b/etc/NEWS
index 1f8e6049a88..1a51a90636d 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -96,6 +96,11 @@ shows equivalent key bindings for all commands that have them.
 
 * Changes in Specialized Modes and Packages in Emacs 28.1
 
+** Dired
+
+*** State changing VC operations are supported in dired-mode on files
+(but still not on directories).
+
 ** Help
 
 +++