Fix display of man pages after killing the 'man' process

* lisp/man.el (Man-bgproc-filter, Man-bgproc-sentinel): Use
'buffer-live-p' instead of just testing the buffer's name.
(Bug#42160)

diff --git a/lisp/man.el b/lisp/man.el
index 8a36f3ac25d810c033e690a0df9e6676f6fc48d1..3121334c6f94a0c2245728c07aaec63e2faca622 100644 (file)
--- a/lisp/man.el
+++ b/lisp/man.el
@@ -1396,7 +1396,7 @@ synchronously, PROCESS is the name of the buffer where the manpage
 command is run.  Second argument STRING is the entire string of output."
   (save-excursion
     (let ((Man-buffer (process-buffer process)))
-      (if (null (buffer-name Man-buffer)) ;; deleted buffer
+      (if (not (buffer-live-p Man-buffer)) ;; deleted buffer
          (set-process-buffer process nil)
 
        (with-current-buffer Man-buffer
@@ -1430,7 +1430,7 @@ manpage command."
        (delete-buff nil)
        message)
 
-    (if (null (buffer-name Man-buffer)) ;; deleted buffer
+    (if (not (buffer-live-p Man-buffer)) ;; deleted buffer
        (or (stringp process)
            (set-process-buffer process nil))