* files.el (hack-local-variables-prop-line)

(hack-local-variables, dir-locals-read-from-file): Bind
read-circle to nil before reading.
* lread.c (Vread_circle): New variable.
(read1): Disable recursive read if Vread_circle is nil.

1 files changed, 4 insertions, 0 deletions

diff --git a/etc/NEWS b/etc/NEWS
index de3464ede22..a1246837c3e 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -1931,6 +1931,10 @@ port support (see Emacs changes, above).
 ** Miscellaneous new variables
 
 +++
+*** `read-circle', if nil, disables the reading of recursive Lisp
+structures using the #N= and #N# syntax.
+
++++
 *** `this-command-keys-shift-translated' is non-nil if the key
 sequence invoking the current command was found by shift-translation.