* variables.texi (Lexical Binding): Mention `defcustom'.

Fixes: debbugs:8459

diff --git a/doc/lispref/variables.texi b/doc/lispref/variables.texi
index 3da09369882c9e5851dd964f3c49ed29b4d6b4e7..091765043e394deb930dd6e79d8400ba8c20286b 100644 (file)
--- a/doc/lispref/variables.texi
+++ b/doc/lispref/variables.texi
@@ -1099,11 +1099,12 @@ use short names like @code{x}.
 @node Lexical Binding
 @subsection Use of Lexical Scoping
 
-Emacs Lisp can be evaluated in two different modes: in dynamic binding mode or
-lexical binding mode.  In dynamic binding mode, all local variables use dynamic
-scoping, whereas in lexical binding mode variables that have been declared
-@dfn{special} (i.e., declared with @code{defvar} or @code{defconst}) use
-dynamic scoping and all others use lexical scoping.
+Emacs Lisp can be evaluated in two different modes: in dynamic binding
+mode or lexical binding mode.  In dynamic binding mode, all local
+variables use dynamic scoping, whereas in lexical binding mode
+variables that have been declared @dfn{special} (i.e., declared with
+@code{defvar}, @code{defcustom} or @code{defconst}) use dynamic
+scoping and all others use lexical scoping.
 
 @defvar lexical-binding
 When non-nil, evaluation of Lisp code uses lexical scoping for non-special