ncurses 6.2 - patch 20210508

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

diff --git a/ncurses/tinfo/lib_tgoto.c b/ncurses/tinfo/lib_tgoto.c
index 292b2eb2698ca7ffae63a4ddfe9b41e4bbd52a36..9cf5e100ce87ff7abd3c90b0bdc15084e54b2f35 100644 (file)
--- a/ncurses/tinfo/lib_tgoto.c
+++ b/ncurses/tinfo/lib_tgoto.c
@@ -1,5 +1,6 @@
 /****************************************************************************
- * Copyright (c) 2000-2012,2018 Free Software Foundation, Inc.              *
+ * Copyright 2018-2019,2020 Thomas E. Dickey                                *
+ * Copyright 2000-2008,2012 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            *
@@ -35,7 +36,7 @@
 #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 1.21 2020/05/27 23:55:56 tom Exp $")
 
 #if !PURE_TERMINFO
 static bool
@@ -125,7 +126,14 @@ tgoto_internal(const char *string, int x, int y)
                        *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++;
@@ -199,6 +207,6 @@ tgoto(const char *string, int x, int y)
        result = tgoto_internal(string, x, y);
     else
 #endif
-       result = TPARM_2(string, y, x);
+       result = TIPARM_2(string, y, x);
     returnPtr(result);
 }