\f
* Incompatible Lisp Changes in Emacs 25.1
+---
+** `setq' must now be called with an even number of arguments. The
+earlier behavior of silently supplying a nil to the last variable when
+there was an odd number of arguments has been eliminated.
+
** `syntax-begin-function' is declared obsolete.
Removed font-lock-beginning-of-syntax-function and the SYNTAX-BEGIN
slot in font-lock-defaults.