Improve documentation of 'enable-local-variables' in Emacs manual

* doc/emacs/custom.texi (Safe File Variables): Document ':all'.
(Bug#64621)

diff --git a/doc/emacs/custom.texi b/doc/emacs/custom.texi
index 87290734cc9f745fd33778a879cda1b6a8485929..9bbef7dd5089222fb99747130a6b67c09ab29215 100644 (file)
--- a/doc/emacs/custom.texi
+++ b/doc/emacs/custom.texi
@@ -1349,9 +1349,11 @@ be permanently ignored, customize @code{ignored-local-variable-values}.
 way Emacs processes local variables.  Its default value is @code{t},
 which specifies the behavior described above.  If it is @code{nil},
 Emacs simply ignores all file local variables.  @code{:safe} means use
-only the safe values and ignore the rest.  Any other value says to
-query you about each file that has local variables, without trying to
-determine whether the values are known to be safe.
+only the safe values and ignore the rest.  @code{:all} instructs Emacs
+to set all file local variables (we advise not to use it permanently).
+Any other value says to query you about each file that has local
+variables, without trying to determine whether the values are known to
+be safe.
 
 @vindex enable-local-eval
 @vindex safe-local-eval-forms