Doc fix for lexical-binding being in line one.

Ref http://lists.gnu.org/archive/html/emacs-devel/2012-01/msg00543.html

* doc/lispref/variables.texi (Using Lexical Binding):
Mention that lexical-binding should be set in the first line.

* src/lread.c (syms_of_lread): Doc fix.

* lisp/emacs-lisp/tabulated-list.el, lisp/progmodes/f90.el:
Move lexical-binding file-local to line one.

* etc/NEWS: lexical-binding should be ine the first line.

2 files changed, 6 insertions, 1 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index cc149458e02..9d37a04da2c 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,7 @@
+2012-01-26  Glenn Morris  <rgm@gnu.org>
+
+        * lread.c (syms_of_lread): Doc fix.
+
 2012-01-25  HIROSHI OOTA  <nil@mad.dog.cx>  (tiny change)
 
         * coding.c (encode_designation_at_bol): Change return value to
diff --git a/src/lread.c b/src/lread.c
index 23cda8eed6d..353f4a3064d 100644
--- a/src/lread.c
+++ b/src/lread.c
@@ -4595,7 +4595,8 @@ to load.  See also `load-dangerous-libraries'.  */);
 Non-nil means that the code in the current buffer should be evaluated
 with lexical binding.
 This variable is automatically set from the file variables of an
-interpreted Lisp file read using `load'.  */);
+interpreted Lisp file read using `load'.  Unlike other file local
+variables, this must be set in the first line of a file.  */);
   Fmake_variable_buffer_local (Qlexical_binding);
 
   DEFVAR_LISP ("eval-buffer-list", Veval_buffer_list,