Fix the bytecode incompatibility due to the change to 'narrow-to-region'.

* src/editfns.c (narrow_to_region_internal): New function, which
contains the body previously in 'Fnarrow_to_region' but accepts
a third argument.
(Fnarrow_to_region): Use the new function. Update the docstring.
(Fwiden): Update the docstring.

* src/lisp.h: Prototype of the new function.

* src/xdisp.c (handle_fontified_prop): Use the new function instead
of 'Fnarrow_to_region'.

* src/process.c (Finternal_default_process_filter):
* src/lread.c (readevalloop): Remove the third argument to
'Fnarrow_to_region'.

* src/bytecode.c (exec_byte_code):
* lisp/emacs-lisp/comp.el (comp-limplify-lap-inst):
* lisp/emacs-lisp/bytecomp.el: Restore the statu quo ante.

* etc/NEWS: Remove the entry about the new optional argument.

* doc/lispref/positions.texi (Narrowing): Update the documentation.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/bytecode.c b/src/bytecode.c
index 2b1eccdc518..d75767bb0c5 100644
--- a/src/bytecode.c
+++ b/src/bytecode.c
@@ -1480,8 +1480,8 @@ exec_byte_code (Lisp_Object fun, ptrdiff_t args_template,
 
         CASE (Bnarrow_to_region):
           {
-            Lisp_Object v2 = POP, v1 = POP;
-            TOP = Fnarrow_to_region (TOP, v1, v2);
+            Lisp_Object v1 = POP;
+            TOP = Fnarrow_to_region (TOP, v1);
             NEXT;
           }