* fhandler.h (fhandler_termios::line_edit): Replace third argument with

passed-in termios struct.
* fhandler_console.cc (fhandler_console::read): Prior to loop, make a copy of
current termios for passing to line_edit prior so that all characters are
processed consistently.
* fhandler_tty.cc (fhandler_pty_master::write): Ditto.
(process_input): Make a copy of curent termios prior to read for use in
subsequent line_edit.
* fhandler_termios.cc (fhandler_termios::line_edit): Replace third parameter
with passed-in termios struct and use it throughout rather than the data from
the current fhandler_termios class.

winsup/cygwin/fhandler.h

@@ -705,7 +705,7 @@ class fhandler_termios: public fhandler_base
     set_need_fork_fixup ();
   }
   HANDLE& get_output_handle () { return output_handle; }
-  line_edit_status line_edit (const char *rptr, int nread, int always_accept = 0);
+  line_edit_status line_edit (const char *rptr, int nread, termios&);
   void set_output_handle (HANDLE h) { output_handle = h; }
   void tcinit (tty_min *this_tc, int force = FALSE);
   virtual int is_tty () { return 1; }