[Emacs-diffs] emacs-26 ed2c542: * lisp/bindings.el (buffer-file-coding-system):

[Glenn Morris]

branch: emacs-26
commit ed2c542920da2a0d99de01e863cbd4ab7dfe13d7
Author: Glenn Morris <address@hidden>
Commit: Glenn Morris <address@hidden>

    * lisp/bindings.el (buffer-file-coding-system):
    Add explicit permanent-local mark.
    
    ; * src/buffer.c (init_buffer_once): Comment.
---
 lisp/bindings.el | 4 +++-
 src/buffer.c     | 2 ++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/lisp/bindings.el b/lisp/bindings.el
index 3a679f7..2b66404 100644
--- a/lisp/bindings.el
+++ b/lisp/bindings.el
@@ -689,6 +689,7 @@ okay.  See `mode-line-format'.")
 ;; `kill-all-local-variables', because they have no default value.
 ;; For consistency, we give them the `permanent-local' property, even
 ;; though `kill-all-local-variables' does not actually consult it.
+;; See init_buffer_once in buffer.c for the origins of this list.
 
 (mapc (lambda (sym) (put sym 'permanent-local t))
       '(buffer-file-name default-directory buffer-backed-up
@@ -697,7 +698,8 @@ okay.  See `mode-line-format'.")
        point-before-scroll buffer-file-truename
        buffer-file-format buffer-auto-save-file-format
        buffer-display-count buffer-display-time
-       enable-multibyte-characters))
+       enable-multibyte-characters
+       buffer-file-coding-system))
 
 ;; We have base64, md5 and sha1 functions built in now.
 (provide 'base64)
diff --git a/src/buffer.c b/src/buffer.c
index 4ae5e81..d1c4138 100644
--- a/src/buffer.c
+++ b/src/buffer.c
@@ -5079,6 +5079,8 @@ init_buffer_once (void)
 {
   int idx;
 
+  /* Items flagged permanent get an explicit permanent-local property
+     added in bindings.el, for clarity.  */
   memset (buffer_permanent_local_flags, 0, sizeof 
buffer_permanent_local_flags);
 
   /* 0 means not a lisp var, -1 means always local, else mask.  */