Ibuffer: Add toggle ibuffer-do-toggle-lock

Toggle the locked status in marked buffers or the buffer
at point (Bug#32421).
* lisp/ibuffer.el (ibuffer-do-toggle-lock): New command.
(ibuffer-mode-map): Bind it to 'L'.
(ibuffer-mode-operate-map): Add entries for
`ibuffer-do-toggle-read-only' and `ibuffer-do-toggle-lock'.
* etc/NEWS (Changes in Specialized Modes and Packages in Emacs 26.2):
Announce the change.

1 files changed, 5 insertions, 0 deletions

diff --git a/etc/NEWS b/etc/NEWS
index a1c12a6766c..e563473661e 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -45,6 +45,11 @@ often cause crashes.  Set it to nil if you really need those fonts.
 
 * Changes in Specialized Modes and Packages in Emacs 26.2
 
+** Ibuffer
+
+---
+*** New toggle 'ibuffer-do-toggle-lock', bound to 'L'.
+
 ** Gnus
 
 ---