This is synced from dash-0.4.17 and full ready for insert to new busybox

version:
ftp://ftp.simtreas.ru/pub/my/bb/new

News:

- code is smalest!
- support ${var...} expr
- used new very strongly steal controlling terminal

shell/cmdedit.c

@@ -9,7 +9,7 @@
  *      Adam Rogoyski    <rogoyski@cs.utexas.edu>
  *      Dave Cinege      <dcinege@psychosis.com>
  *      Jakub Jelinek (c) 1995
- *      Erik Andersen    <andersen@codepoet.org> (Majorly adjusted for busybox)
+ *      Erik Andersen    <andersee@debian.org> (Majorly adjusted for busybox)
  *
  * This code is 'as is' with no warranty.
  *
@@ -163,6 +163,11 @@ static int my_gid;
 
 #endif  /* CONFIG_FEATURE_COMMAND_TAB_COMPLETION */
 
+/* It seems that libc5 doesn't know what a sighandler_t is... */
+#if (__GLIBC__ <= 2) && (__GLIBC_MINOR__ < 1)
+typedef void (*sighandler_t) (int);
+#endif
+
 static void cmdedit_setwidth(int w, int redraw_flg);
 
 static void win_changed(int nsig)
@@ -1287,8 +1292,12 @@ int cmdedit_read_input(char *prompt, char command[BUFSIZ])
 			goto_new_line();
 			command[0] = 0;
 			len = 0;
+#if !defined(CONFIG_ASH)
 			lastWasTab = FALSE;
 			put_prompt();
+#else
+			break_out = 2;
+#endif
 			break;
 		case 4:
 			/* Control-d -- Delete one character, or exit
@@ -1508,7 +1517,7 @@ rewrite_line:
 	}
 #endif
 #endif  /* MAX_HISTORY >= 1 */
-	if(break_out>0) {
+	if(break_out == 1) {
 		command[len++] = '\n';          /* set '\n' */
 		command[len] = 0;
 	}
@@ -1519,7 +1528,11 @@ rewrite_line:
 	free(cmdedit_prompt);
 #endif
 	cmdedit_reset_term();
+#if !defined(CONFIG_ASH)
 	return len;
+#else
+	return break_out < 0 ? break_out : len;
+#endif
 }