Merge from 5.0-bt

cmd-line-utils/readline/terminal.c

@@ -104,34 +104,36 @@ char PC, *BC, *UP;
 #endif /* __linux__ */
 
 /* Some strings to control terminal actions.  These are output by tputs (). */
-char *_rl_term_clreol;
-char *_rl_term_clrpag;
-char *_rl_term_cr;
-char *_rl_term_backspace;
-char *_rl_term_goto;
-char *_rl_term_pc;
+const char *_rl_term_clreol;
+const char *_rl_term_clrpag;
+const char *_rl_term_cr;
+const char *_rl_term_backspace;
+char _rl_term_backspace_default[2] = { '\b', 0 };
+const char *_rl_term_goto;
+const char *_rl_term_pc;
 
 /* Non-zero if we determine that the terminal can do character insertion. */
 int _rl_terminal_can_insert = 0;
 
 /* How to insert characters. */
-char *_rl_term_im;
-char *_rl_term_ei;
-char *_rl_term_ic;
-char *_rl_term_ip;
-char *_rl_term_IC;
+const char *_rl_term_im;
+const char *_rl_term_ei;
+const char *_rl_term_ic;
+const char *_rl_term_ip;
+const char *_rl_term_IC;
 
 /* How to delete characters. */
-char *_rl_term_dc;
-char *_rl_term_DC;
+const char *_rl_term_dc;
+const char *_rl_term_DC;
 
-char *_rl_term_forward_char;
+const char *_rl_term_forward_char;
 
 /* How to go up a line. */
-char *_rl_term_up;
+const char *_rl_term_up;
+char _rl_term_up_default[2] = { 0, 0 };
 
 /* A visible bell; char if the terminal can be made to flash the screen. */
-static char *_rl_visible_bell;
+static const char *_rl_visible_bell;
 
 /* Non-zero means the terminal can auto-wrap lines. */
 int _rl_term_autowrap = -1;
@@ -141,33 +143,33 @@ static int term_has_meta;
 
 /* The sequences to write to turn on and off the meta key, if this
    terminal has one. */
-static char *_rl_term_mm;
-static char *_rl_term_mo;
+static const char *_rl_term_mm;
+static const char *_rl_term_mo;
 
 /* The key sequences output by the arrow keys, if this terminal has any. */
-static char *_rl_term_ku;
-static char *_rl_term_kd;
-static char *_rl_term_kr;
-static char *_rl_term_kl;
+static const char *_rl_term_ku;
+static const char *_rl_term_kd;
+static const char *_rl_term_kr;
+static const char *_rl_term_kl;
 
 /* How to initialize and reset the arrow keys, if this terminal has any. */
-static char *_rl_term_ks;
-static char *_rl_term_ke;
+static const char *_rl_term_ks;
+static const char *_rl_term_ke;
 
 /* The key sequences sent by the Home and End keys, if any. */
-static char *_rl_term_kh;
-static char *_rl_term_kH;
-static char *_rl_term_at7;	/* @7 */
+static const char *_rl_term_kh;
+static const char *_rl_term_kH;
+static const char *_rl_term_at7;	/* @7 */
 
 /* Delete key */
-static char *_rl_term_kD;
+static const char *_rl_term_kD;
 
 /* Insert key */
-static char *_rl_term_kI;
+static const char *_rl_term_kI;
 
 /* Cursor control */
-static char *_rl_term_vs;	/* very visible */
-static char *_rl_term_ve;	/* normal */
+static const char *_rl_term_vs;	/* very visible */
+static const char *_rl_term_ve;	/* normal */
 
 static void bind_termcap_arrow_keys PARAMS((Keymap));
 
@@ -362,7 +364,7 @@ rl_resize_terminal ()
 
 struct _tc_string {
      const char *tc_var;
-     char **tc_value;
+     const char **tc_value;
 };
 
 /* This should be kept sorted, just in case we decide to change the
@@ -409,7 +411,7 @@ get_term_capabilities (bp)
      char **bp;
 {
 #if !defined (__DJGPP__)	/* XXX - doesn't DJGPP have a termcap library? */
-  register int i;
+  register unsigned int i;
 
   for (i = 0; i < NUM_TC_STRINGS; i++)
     *(tc_strings[i].tc_value) = tgetstr ((char *)tc_strings[i].tc_var, bp);
@@ -496,8 +498,9 @@ _rl_init_terminal_io (terminal_name)
          tgoto if _rl_term_IC or _rl_term_DC is defined, but just in case we
          change that later... */
       PC = '\0';
-      BC = _rl_term_backspace = "\b";
-      UP = _rl_term_up;
+      _rl_term_backspace = _rl_term_backspace_default;
+      BC = (char*)_rl_term_backspace;
+      UP = (char*)_rl_term_up;
 
       return 0;
     }
@@ -507,8 +510,8 @@ _rl_init_terminal_io (terminal_name)
   /* Set up the variables that the termcap library expects the application
      to provide. */
   PC = _rl_term_pc ? *_rl_term_pc : 0;
-  BC = _rl_term_backspace;
-  UP = _rl_term_up;
+  BC = (char*)_rl_term_backspace;
+  UP = (char*)_rl_term_up;
 
   if (!_rl_term_cr)
     _rl_term_cr = "\r";
@@ -568,11 +571,11 @@ bind_termcap_arrow_keys (map)
   _rl_keymap = xkeymap;
 }
 
-char *
+const char *
 rl_get_termcap (cap)
      const char *cap;
 {
-  register int i;
+  register unsigned int i;
 
   if (tcap_initialized == 0)
     return ((char *)NULL);