i can compile slang and newt with dietlibc now

1 files changed, 836 insertions, 0 deletions

diff --git a/mdk-stage1/slang/slrline.c b/mdk-stage1/slang/slrline.c
new file mode 100644
index 000000000..1874be0bb
--- /dev/null
+++ b/mdk-stage1/slang/slrline.c
@@ -0,0 +1,836 @@
+/* SLang_read_line interface --- uses SLang tty stuff */
+/* Copyright (c) 1992, 1999, 2001 John E. Davis
+ * This file is part of the S-Lang library.
+ *
+ * You may distribute under the terms of either the GNU General Public
+ * License or the Perl Artistic License.
+ */
+
+#include "slinclud.h"
+
+#include "slang.h"
+#include "_slang.h"
+
+#ifdef REAL_UNIX_SYSTEM
+int SLang_RL_EOF_Char = 4;
+#else
+int SLang_RL_EOF_Char = 26;
+#endif
+
+int SLang_Rline_Quit;
+static SLang_RLine_Info_Type *This_RLI;
+
+static unsigned char Char_Widths[256];
+static void position_cursor (int);
+
+static void rl_beep (void)
+{
+   putc(7, stdout);
+   fflush (stdout);
+}
+
+/* editing functions */
+static int rl_bol (void)
+{
+   if (This_RLI->point == 0) return 0;
+   This_RLI->point = 0;
+   return 1;
+}
+
+static int rl_eol (void)
+{
+   if (This_RLI->point == This_RLI->len) return 0;
+   This_RLI->point = This_RLI->len;
+   return 1;
+}
+
+static int rl_right (void)
+{
+   if (This_RLI->point == This_RLI->len) return 0;
+   This_RLI->point++;
+   return 1;
+}
+
+static int rl_left (void)
+{
+   if (This_RLI->point == 0) return 0;
+   This_RLI->point--;
+   return 1;
+}
+
+static int rl_self_insert (void)
+{
+   unsigned char *pmin, *p;
+
+   if (This_RLI->len == This_RLI->buf_len)
+     {
+	rl_beep ();
+	return 0;
+     }
+
+   pmin = This_RLI->buf + This_RLI->point;
+   p = This_RLI->buf + This_RLI->len;
+   while (p > pmin)
+     {
+	*p = *(p - 1);
+	p--;
+     }
+   *pmin = SLang_Last_Key_Char;
+
+   This_RLI->len++;
+   This_RLI->point++;
+   if ((This_RLI->curs_pos + 2 >= This_RLI->edit_width)
+       || (This_RLI->tt_insert == NULL)
+       || (Char_Widths[SLang_Last_Key_Char] != 1)) return 1;
+
+   (*This_RLI->tt_insert)((char) SLang_Last_Key_Char);
+   /* update screen buf */
+   p = This_RLI->old_upd + (This_RLI->len - 1);
+   pmin = This_RLI->old_upd + (This_RLI->point - 1);
+   while (p > pmin)
+     {
+	*p = *(p - 1);
+	p--;
+     }
+   *pmin = SLang_Last_Key_Char;
+   return 0;
+}
+
+int SLang_rline_insert (char *s)
+{
+   unsigned char *pmin, *p;
+   int n;
+
+   n = strlen (s);
+   if (n > This_RLI->buf_len - This_RLI->len)
+     n = This_RLI->buf_len - This_RLI->len;
+
+   if (n == 0) return 0;
+
+   pmin = This_RLI->buf + This_RLI->point;
+   p = This_RLI->buf + (This_RLI->len - 1);
+
+   while (p >= pmin)
+     {
+	*(p + n) = *p;
+	p--;
+     }
+   SLMEMCPY ((char *) pmin, s, n);
+
+   This_RLI->len += n;
+   This_RLI->point += n;
+   return n;
+}
+
+static int rl_deln (int n)
+{
+   unsigned char *pmax, *p;
+
+   p = This_RLI->buf + This_RLI->point;
+   pmax = This_RLI->buf + This_RLI->len;
+
+   if (p + n > pmax) n = (int) (pmax - p);
+   while (p < pmax)
+     {
+	*p = *(p + n);
+	p++;
+     }
+   This_RLI->len -= n;
+   return n;
+}
+
+static int rl_del (void)
+{
+   return rl_deln(1);
+}
+
+static int rl_quote_insert (void)
+{
+   int err = SLang_Error;
+   SLang_Error = 0;
+   SLang_Last_Key_Char = (*This_RLI->getkey)();
+   rl_self_insert ();
+   if (SLang_Error == SL_USER_BREAK) SLang_Error = 0;
+   else SLang_Error = err;
+   return 1;
+}
+
+static int rl_trim (void)
+{
+   unsigned char *p, *pmax, *p1;
+   p = This_RLI->buf + This_RLI->point;
+   pmax = This_RLI->buf + This_RLI->len;
+
+   if (p == pmax)
+     {
+	if (p == This_RLI->buf) return 0;
+	p--;
+     }
+
+   if ((*p != ' ') && (*p != '\t')) return 0;
+   p1 = p;
+   while ((p1 < pmax) && ((*p1 == ' ') || (*p1 == '\t'))) p1++;
+   pmax = p1;
+   p1 = This_RLI->buf;
+
+   while ((p >= p1) && ((*p == ' ') || (*p == '\t'))) p--;
+   if (p == pmax) return 0;
+   p++;
+
+   This_RLI->point = (int) (p - p1);
+   return rl_deln ((int) (pmax - p));
+}
+
+static int rl_bdel (void)
+{
+   if (rl_left()) return rl_del();
+   return 0;
+}
+
+static int rl_deleol (void)
+{
+   if (This_RLI->point == This_RLI->len) return 0;
+   *(This_RLI->buf + This_RLI->point) = 0;
+   This_RLI->len = This_RLI->point;
+   return 1;
+}
+
+static int rl_delete_line (void)
+{
+   This_RLI->point = 0;
+   *(This_RLI->buf + This_RLI->point) = 0;
+   This_RLI->len = 0;
+   return 1;
+}
+
+static int rl_enter (void)
+{
+   *(This_RLI->buf + This_RLI->len) = 0;
+   SLang_Rline_Quit = 1;
+   return 1;
+}
+
+static SLKeyMap_List_Type *RL_Keymap;
+
+/* This update is designed for dumb terminals.  It assumes only that the
+ * terminal can backspace via ^H, and move cursor to start of line via ^M.
+ * There is a hook so the user can provide a more sophisticated update if
+ * necessary.
+ */
+
+static void position_cursor (int col)
+{
+   unsigned char *p, *pmax;
+   int dc;
+
+   if (col == This_RLI->curs_pos)
+     {
+	fflush (stdout);
+	return;
+     }
+
+   if (This_RLI->tt_goto_column != NULL)
+     {
+	(*This_RLI->tt_goto_column)(col);
+	This_RLI->curs_pos = col;
+	fflush (stdout);
+	return;
+     }
+
+   dc = This_RLI->curs_pos - col;
+   if (dc < 0)
+     {
+	p = This_RLI->new_upd + This_RLI->curs_pos;
+	pmax = This_RLI->new_upd + col;
+	while (p < pmax) putc((char) *p++, stdout);
+     }
+   else
+     {
+	if (dc < col)
+	  {
+	     while (dc--) putc(8, stdout);
+	  }
+	else
+	  {
+	     putc('\r', stdout);
+	     p = This_RLI->new_upd;
+	     pmax = This_RLI->new_upd + col;
+	     while (p < pmax) putc((char) *p++, stdout);
+	  }
+     }
+   This_RLI->curs_pos = col;
+   fflush (stdout);
+}
+
+static void erase_eol (SLang_RLine_Info_Type *rli)
+{
+   unsigned char *p, *pmax;
+
+   p = rli->old_upd + rli->curs_pos;
+   pmax = rli->old_upd + rli->old_upd_len;
+
+   while (p++ < pmax) putc(' ', stdout);
+
+   rli->curs_pos = rli->old_upd_len;
+}
+
+static unsigned char *spit_out(SLang_RLine_Info_Type *rli, unsigned char *p)
+{
+   unsigned char *pmax;
+   position_cursor ((int) (p - rli->new_upd));
+   pmax = rli->new_upd + rli->new_upd_len;
+   while (p < pmax) putc((char) *p++, stdout);
+   rli->curs_pos = rli->new_upd_len;
+   return pmax;
+}
+
+static void really_update (SLang_RLine_Info_Type *rli, int new_curs_position)
+{
+   unsigned char *b = rli->old_upd, *p = rli->new_upd, chb, chp;
+   unsigned char *pmax;
+
+   if (rli->update_hook != NULL)
+     {
+	(*rli->update_hook)(p, rli->edit_width, new_curs_position);
+     }
+   else
+     {
+	pmax = p + rli->edit_width;
+	while (p < pmax)
+	  {
+	     chb = *b++; chp = *p++;
+	     if (chb == chp) continue;
+
+	     if (rli->old_upd_len <= rli->new_upd_len)
+	       {
+		  /* easy one */
+		  (void) spit_out (rli, p - 1);
+		  break;
+	       }
+	     spit_out(rli, p - 1);
+	     erase_eol (rli);
+	     break;
+	  }
+	position_cursor (new_curs_position);
+     }
+
+   /* update finished, so swap */
+
+   rli->old_upd_len = rli->new_upd_len;
+   p = rli->old_upd;
+   rli->old_upd = rli->new_upd;
+   rli->new_upd = p;
+}
+
+static void RLupdate (SLang_RLine_Info_Type *rli)
+{
+   int len, dlen, start_len = 0, prompt_len = 0, tw = 0, count;
+   int want_cursor_pos;
+   unsigned char *b, chb, *b_point, *p;
+   int no_echo;
+
+   no_echo = rli->flags & SL_RLINE_NO_ECHO;
+
+   b_point = (unsigned char *) (rli->buf + rli->point);
+   *(rli->buf + rli->len) = 0;
+
+   /* expand characters for output buffer --- handle prompt first.
+    * Do two passes --- first to find out where to begin upon horiz
+    * scroll and the second to actually fill the buffer. */
+   len = 0;
+   count = 2;			       /* once for prompt and once for buf */
+
+   b = (unsigned char *) rli->prompt;
+   while (count--)
+     {
+	if ((count == 0) && no_echo)
+	  break;
+
+	/* The prompt could be NULL */
+	if (b != NULL) while ((chb = *b) != 0)
+	  {
+	     /* This will ensure that the screen is scrolled a third of the edit
+	      * width each time */
+	     if (b_point == b) break;
+	     dlen = Char_Widths[chb];
+	     if ((chb == '\t') && tw)
+	       {
+		  dlen = tw * ((len - prompt_len) / tw + 1) - (len - prompt_len);
+	       }
+	     len += dlen;
+	     b++;
+	  }
+	tw = rli->tab;
+	b = (unsigned char *) rli->buf;
+	if (count == 1) want_cursor_pos = prompt_len = len;
+     }
+
+   if (len < rli->edit_width - rli->dhscroll) start_len = 0;
+   else if ((rli->start_column > len)
+	    || (rli->start_column + rli->edit_width <= len))
+     {
+	start_len = len - (rli->edit_width - rli->dhscroll);
+	if (start_len < 0) start_len = 0;
+     }
+   else start_len = rli->start_column;
+   rli->start_column = start_len;
+
+   want_cursor_pos = len - start_len;
+
+   /* second pass */
+   p = rli->new_upd;
+
+   len = 0;
+   count = 2;
+   b = (unsigned char *) rli->prompt;
+   if (b == NULL) b = (unsigned char *) "";
+
+   while ((len < start_len) && (*b))
+     {
+	len += Char_Widths[*b++];
+     }
+
+   tw = 0;
+   if (*b == 0)
+     {
+	b = (unsigned char *) rli->buf;
+	while (len < start_len)
+	  {
+	     len += Char_Widths[*b++];
+	  }
+	tw = rli->tab;
+	count--;
+     }
+
+   len = 0;
+   while (count--)
+     {
+	if ((count == 0) && (no_echo))
+	  break;
+
+	while ((len < rli->edit_width) && ((chb = *b++) != 0))
+	  {
+	     dlen = Char_Widths[chb];
+	     if (dlen == 1) *p++ = chb;
+	     else
+	       {
+		  if ((chb == '\t') && tw)
+		    {
+		       dlen = tw * ((len + start_len - prompt_len) / tw + 1) - (len + start_len - prompt_len);
+		       len += dlen;	       /* ok since dlen comes out 0  */
+		       if (len > rli->edit_width) dlen = len - rli->edit_width;
+		       while (dlen--) *p++ = ' ';
+		       dlen = 0;
+		    }
+		  else
+		    {
+		       if (dlen == 3)
+			 {
+			    chb &= 0x7F;
+			    *p++ = '~';
+			 }
+
+		       *p++ = '^';
+		       if (chb == 127)  *p++ = '?';
+		       else *p++ = chb + '@';
+		    }
+	       }
+	     len += dlen;
+	  }
+	/* if (start_len > prompt_len) break; */
+	tw = rli->tab;
+	b = (unsigned char *) rli->buf;
+     }
+
+   rli->new_upd_len = (int) (p - rli->new_upd);
+   while (p < rli->new_upd + rli->edit_width) *p++ = ' ';
+   really_update (rli, want_cursor_pos);
+}
+
+void SLrline_redraw (SLang_RLine_Info_Type *rli)
+{
+   unsigned char *p = rli->new_upd;
+   unsigned char *pmax = p + rli->edit_width;
+   while (p < pmax) *p++ = ' ';
+   rli->new_upd_len = rli->edit_width;
+   really_update (rli, 0);
+   RLupdate (rli);
+}
+
+static int rl_eof_insert (void)
+{
+   if (This_RLI->len == 0)
+     {
+	SLang_Last_Key_Char = SLang_RL_EOF_Char;
+	/* rl_self_insert (); */
+	return rl_enter ();
+     }
+   return 0;
+}
+
+/* This is very naive.  It knows very little about nesting and nothing
+ * about quoting.
+ */
+static void blink_match (SLang_RLine_Info_Type *rli)
+{
+   unsigned char bra, ket;
+   unsigned int delta_column;
+   unsigned char *p, *pmin;
+   int dq_level, sq_level;
+   int level;
+
+   pmin = rli->buf;
+   p = pmin + rli->point;
+   if (pmin == p)
+     return;
+
+   ket = SLang_Last_Key_Char;
+   switch (ket)
+     {
+      case ')':
+	bra = '(';
+	break;
+      case ']':
+	bra = '[';
+	break;
+      case '}':
+	bra = '{';
+	break;
+      default:
+	return;
+     }
+
+   level = 0;
+   sq_level = dq_level = 0;
+
+   delta_column = 0;
+   while (p > pmin)
+     {
+	char ch;
+
+	p--;
+	delta_column++;
+	ch = *p;
+
+	if (ch == ket)
+	  {
+	     if ((dq_level == 0) && (sq_level == 0))
+	       level++;
+	  }
+	else if (ch == bra)
+	  {
+	     if ((dq_level != 0) || (sq_level != 0))
+	       continue;
+
+	     level--;
+	     if (level == 0)
+	       {
+		  rli->point -= delta_column;
+		  RLupdate (rli);
+		  (*rli->input_pending)(10);
+		  rli->point += delta_column;
+		  RLupdate (rli);
+		  break;
+	       }
+	     if (level < 0)
+	       break;
+	  }
+	else if (ch == '"') dq_level = !dq_level;
+	else if (ch == '\'') sq_level = !sq_level;
+     }
+}
+
+int SLang_read_line (SLang_RLine_Info_Type *rli)
+{
+   unsigned char *p, *pmax;
+   SLang_Key_Type *key;
+
+   SLang_Rline_Quit = 0;
+   This_RLI = rli;
+   p = rli->old_upd; pmax = p + rli->edit_width;
+   while (p < pmax) *p++ = ' ';
+
+   /* Sanity checking */
+   rli->len = strlen ((char *) rli->buf);
+   if (rli->len >= rli->buf_len)
+     {
+	rli->len = 0;
+	*rli->buf = 0;
+     }
+   if (rli->point > rli->len) rli->point = rli->len;
+   if (rli->point < 0) rli->point = 0;
+
+   rli->curs_pos = rli->start_column = 0;
+   rli->new_upd_len = rli->old_upd_len = 0;
+
+   This_RLI->last_fun = NULL;
+   if (rli->update_hook == NULL)
+     putc ('\r', stdout);
+
+   RLupdate (rli);
+
+   while (1)
+     {
+	key = SLang_do_key (RL_Keymap, (int (*)(void)) rli->getkey);
+
+	if ((key == NULL) || (key->f.f == NULL))
+	  rl_beep ();
+	else
+	  {
+	     if ((SLang_Last_Key_Char == SLang_RL_EOF_Char)
+		 && (*key->str == 2)
+		 && (This_RLI->len == 0))
+	       rl_eof_insert ();
+	     else if (key->type == SLKEY_F_INTRINSIC)
+	       {
+		  if ((key->f.f)())
+		    RLupdate (rli);
+
+		  if ((rli->flags & SL_RLINE_BLINK_MATCH)
+		      && (rli->input_pending != NULL))
+		    blink_match (rli);
+	       }
+
+	     if (SLang_Rline_Quit)
+	       {
+		  This_RLI->buf[This_RLI->len] = 0;
+		  if (SLang_Error == SL_USER_BREAK)
+		    {
+		       SLang_Error = 0;
+		       return -1;
+		    }
+		  return This_RLI->len;
+	       }
+	  }
+	if (key != NULL)
+	  This_RLI->last_fun = key->f.f;
+     }
+}
+
+static int rl_abort (void)
+{
+   rl_delete_line ();
+   return rl_enter ();
+}
+
+/* TTY interface --- ANSI */
+
+static void ansi_goto_column (int n)
+{
+   putc('\r', stdout);
+   if (n) fprintf(stdout, "\033[%dC", n);
+}
+
+static void rl_select_line (SLang_Read_Line_Type *p)
+{
+   This_RLI->last = p;
+   strcpy ((char *) This_RLI->buf, (char *) p->buf);
+   This_RLI->point = This_RLI->len = strlen((char *) p->buf);
+}
+static int rl_next_line (void);
+static int rl_prev_line (void)
+{
+   SLang_Read_Line_Type *prev;
+
+   if (((This_RLI->last_fun != (FVOID_STAR) rl_prev_line)
+	&& (This_RLI->last_fun != (FVOID_STAR) rl_next_line))
+       || (This_RLI->last == NULL))
+     {
+	prev = This_RLI->tail;
+     }
+   else prev = This_RLI->last->prev;
+
+   if (prev == NULL)
+     {
+	rl_beep ();
+	return 0;
+     }
+
+   rl_select_line (prev);
+   return 1;
+}
+static int rl_redraw (void)
+{
+   SLrline_redraw (This_RLI);
+   return 1;
+}
+
+static int rl_next_line (void)
+{
+   SLang_Read_Line_Type *next;
+
+   if (((This_RLI->last_fun != (FVOID_STAR) rl_prev_line)
+	&& (This_RLI->last_fun != (FVOID_STAR) rl_next_line))
+       || (This_RLI->last == NULL))
+      {
+	 rl_beep ();
+	 return 0;
+      }
+
+   next = This_RLI->last->next;
+
+   if (next == NULL)
+     {
+	This_RLI->len = This_RLI->point = 0;
+	*This_RLI->buf = 0;
+	This_RLI->last = NULL;
+     }
+   else rl_select_line (next);
+   return 1;
+}
+
+static SLKeymap_Function_Type SLReadLine_Functions[] =
+{
+   {"up", rl_prev_line},
+   {"down", rl_next_line},
+   {"bol", rl_bol},
+   {"eol", rl_eol},
+   {"right", rl_right},
+   {"left", rl_left},
+   {"self_insert", rl_self_insert},
+   {"bdel", rl_bdel},
+   {"del", rl_del},
+   {"deleol", rl_deleol},
+   {"enter", rl_enter},
+   {"trim", rl_trim},
+   {"quoted_insert", rl_quote_insert},
+   {(char *) NULL, NULL}
+};
+
+int SLang_init_readline (SLang_RLine_Info_Type *rli)
+{
+   int ch;
+   char simple[2];
+
+   if (RL_Keymap == NULL)
+     {
+	simple[1] = 0;
+	if (NULL == (RL_Keymap = SLang_create_keymap ("ReadLine", NULL)))
+	  return -1;
+
+	RL_Keymap->functions = SLReadLine_Functions;
+
+	/* This breaks under some DEC ALPHA compilers (scary!) */
+#ifndef __DECC
+	for (ch = ' '; ch < 256; ch++)
+	  {
+	     simple[0] = (char) ch;
+	     SLkm_define_key (simple, (FVOID_STAR) rl_self_insert, RL_Keymap);
+	  }
+#else
+	ch = ' ';
+	while (1)
+	  {
+	     simple[0] = (char) ch;
+	     SLkm_define_key (simple, (FVOID_STAR) rl_self_insert, RL_Keymap);
+	     ch = ch + 1;
+	     if (ch == 256) break;
+	  }
+#endif				       /* NOT __DECC */
+
+	simple[0] = SLang_Abort_Char;
+	SLkm_define_key (simple, (FVOID_STAR) rl_abort, RL_Keymap);
+	simple[0] = SLang_RL_EOF_Char;
+	SLkm_define_key (simple, (FVOID_STAR) rl_eof_insert, RL_Keymap);
+
+#ifndef IBMPC_SYSTEM
+	SLkm_define_key  ("^[[A", (FVOID_STAR) rl_prev_line, RL_Keymap);
+	SLkm_define_key  ("^[[B", (FVOID_STAR) rl_next_line, RL_Keymap);
+	SLkm_define_key  ("^[[C", (FVOID_STAR) rl_right, RL_Keymap);
+	SLkm_define_key  ("^[[D", (FVOID_STAR) rl_left, RL_Keymap);
+	SLkm_define_key  ("^[OA", (FVOID_STAR) rl_prev_line, RL_Keymap);
+	SLkm_define_key  ("^[OB", (FVOID_STAR) rl_next_line, RL_Keymap);
+	SLkm_define_key  ("^[OC", (FVOID_STAR) rl_right, RL_Keymap);
+	SLkm_define_key  ("^[OD", (FVOID_STAR) rl_left, RL_Keymap);
+#else
+	SLkm_define_key  ("^@H", (FVOID_STAR) rl_prev_line, RL_Keymap);
+	SLkm_define_key  ("^@P", (FVOID_STAR) rl_next_line, RL_Keymap);
+	SLkm_define_key  ("^@M", (FVOID_STAR) rl_right, RL_Keymap);
+	SLkm_define_key  ("^@K", (FVOID_STAR) rl_left, RL_Keymap);
+	SLkm_define_key  ("^@S", (FVOID_STAR) rl_del, RL_Keymap);
+	SLkm_define_key  ("^@O", (FVOID_STAR) rl_eol, RL_Keymap);
+	SLkm_define_key  ("^@G", (FVOID_STAR) rl_bol, RL_Keymap);
+
+	SLkm_define_key  ("\xE0H", (FVOID_STAR) rl_prev_line, RL_Keymap);
+	SLkm_define_key  ("\xE0P", (FVOID_STAR) rl_next_line, RL_Keymap);
+	SLkm_define_key  ("\xE0M", (FVOID_STAR) rl_right, RL_Keymap);
+	SLkm_define_key  ("\xE0K", (FVOID_STAR) rl_left, RL_Keymap);
+	SLkm_define_key  ("\xE0S", (FVOID_STAR) rl_del, RL_Keymap);
+	SLkm_define_key  ("\xE0O", (FVOID_STAR) rl_eol, RL_Keymap);
+	SLkm_define_key  ("\xE0G", (FVOID_STAR) rl_bol, RL_Keymap);
+#endif
+	SLkm_define_key  ("^C", (FVOID_STAR) rl_abort, RL_Keymap);
+	SLkm_define_key  ("^E", (FVOID_STAR) rl_eol, RL_Keymap);
+	SLkm_define_key  ("^G", (FVOID_STAR) rl_abort, RL_Keymap);
+	SLkm_define_key  ("^I", (FVOID_STAR) rl_self_insert, RL_Keymap);
+	SLkm_define_key  ("^A", (FVOID_STAR) rl_bol, RL_Keymap);
+	SLkm_define_key  ("\r", (FVOID_STAR) rl_enter, RL_Keymap);
+	SLkm_define_key  ("\n", (FVOID_STAR) rl_enter, RL_Keymap);
+	SLkm_define_key  ("^K", (FVOID_STAR) rl_deleol, RL_Keymap);
+	SLkm_define_key  ("^L", (FVOID_STAR) rl_deleol, RL_Keymap);
+	SLkm_define_key  ("^V", (FVOID_STAR) rl_del, RL_Keymap);
+	SLkm_define_key  ("^D", (FVOID_STAR) rl_del, RL_Keymap);
+	SLkm_define_key  ("^F", (FVOID_STAR) rl_right, RL_Keymap);
+	SLkm_define_key  ("^B", (FVOID_STAR) rl_left, RL_Keymap);
+	SLkm_define_key  ("^?", (FVOID_STAR) rl_bdel, RL_Keymap);
+	SLkm_define_key  ("^H", (FVOID_STAR) rl_bdel, RL_Keymap);
+	SLkm_define_key  ("^P", (FVOID_STAR) rl_prev_line, RL_Keymap);
+	SLkm_define_key  ("^N", (FVOID_STAR) rl_next_line, RL_Keymap);
+	SLkm_define_key  ("^R", (FVOID_STAR) rl_redraw, RL_Keymap);
+	SLkm_define_key  ("`", (FVOID_STAR) rl_quote_insert, RL_Keymap);
+	SLkm_define_key  ("\033\\", (FVOID_STAR) rl_trim, RL_Keymap);
+	if (SLang_Error) return -1;
+     }
+
+   if (rli->prompt == NULL) rli->prompt = "";
+   if (rli->keymap == NULL) rli->keymap = RL_Keymap;
+   rli->old_upd = rli->upd_buf1;
+   rli->new_upd = rli->upd_buf2;
+   *rli->buf = 0;
+   rli->point = 0;
+
+   if (rli->flags & SL_RLINE_USE_ANSI)
+     {
+	if (rli->tt_goto_column == NULL) rli->tt_goto_column = ansi_goto_column;
+     }
+
+   if (Char_Widths[0] == 2) return 0;
+
+   for (ch = 0; ch < 32; ch++) Char_Widths[ch] = 2;
+   for (ch = 32; ch < 256; ch++) Char_Widths[ch] = 1;
+   Char_Widths[127] = 2;
+#ifndef IBMPC_SYSTEM
+   for (ch = 128; ch < 160; ch++) Char_Widths[ch] = 3;
+#endif
+
+   return 0;
+}
+
+SLang_Read_Line_Type *SLang_rline_save_line (SLang_RLine_Info_Type *rli)
+{
+   SLang_Read_Line_Type *rl = NULL;
+   unsigned char *buf;
+
+   if ((rli == NULL) || (rli->buf == NULL))
+     return NULL;
+
+   if (NULL == (rl = (SLang_Read_Line_Type *) SLmalloc (sizeof (SLang_Read_Line_Type)))
+       || (NULL == (buf = (unsigned char *) SLmake_string ((char *)rli->buf))))
+     {
+	SLfree ((char *)rl);
+	return NULL;
+     }
+   rl->buf = buf;
+   rl->buf_len = strlen ((char *)buf);
+   rl->num = rl->misc = 0;
+   rl->next = rl->prev = NULL;
+
+   if (rli->tail != NULL)
+     {
+	rli->tail->next = rl;
+	rl->prev = rli->tail;
+     }
+   rli->tail = rl;
+
+   return rl;
+}