ncurses 6.1 - patch 20191026

[ncurses.git] / ncurses / tinfo / lib_tgoto.c

diff --git a/ncurses/tinfo/lib_tgoto.c b/ncurses/tinfo/lib_tgoto.c
index 292b2eb2698ca7ffae63a4ddfe9b41e4bbd52a36..4173d74efcddac2ab79791ce5125cbf19a8405f8 100644 (file)
--- a/ncurses/tinfo/lib_tgoto.c
+++ b/ncurses/tinfo/lib_tgoto.c
@@ -1,5 +1,5 @@
 /****************************************************************************
 /****************************************************************************

- * Copyright (c) 2000-2012,2018 Free Software Foundation, Inc.              *
+ * Copyright (c) 2000-2018,2019 Free Software Foundation, Inc.              *

  *                                                                          *
  * Permission is hereby granted, free of charge, to any person obtaining a  *
  * copy of this software and associated documentation files (the            *
  *                                                                          *
  * Permission is hereby granted, free of charge, to any person obtaining a  *
  * copy of this software and associated documentation files (the            *


@@ -35,7 +35,7 @@
 #include <ctype.h>
 #include <termcap.h>
 
 #include <ctype.h>
 #include <termcap.h>
 

-MODULE_ID("$Id: lib_tgoto.c,v 1.17 2018/04/07 21:11:48 tom Exp $")
+MODULE_ID("$Id: lib_tgoto.c,v 1.18 2019/10/26 22:43:48 tom Exp $")

 
 #if !PURE_TERMINFO
 static bool
 
 #if !PURE_TERMINFO
 static bool


@@ -125,7 +125,14 @@ tgoto_internal(const char *string, int x, int y)
                        *value += 1;
                        need_BC = TRUE;
                    } else {
                        *value += 1;
                        need_BC = TRUE;
                    } else {

-                       *value = 0200;  /* tputs will treat this as \0 */
+                       /* tputs will pretend this is \0, which will almost
+                        * always work since ANSI-compatible terminals ignore
+                        * the character.  ECMA-48 does not document a C1
+                        * control for this value.  A few (obsolete) terminals
+                        * can use this value in special cases, such as cursor
+                        * addressing using single-byte coordinates.
+                        */
+                       *value = 0200;

                    }
                }
                result[used++] = (char) *value++;
                    }
                }
                result[used++] = (char) *value++;