minor bug fixes.

ChangeLog

@@ -1,3 +1,23 @@
+1999-07-14  OKUJI Yoshinori  <okuji@kuicr.kyoto-u.ac.jp>
+
+	The function ungetch is simulated so that the user can use a
+	buggy curses.
+	
+	* grub/asmstub.c [HAVE_LIBCURSES] (save_char): New variable.
+	(getkey) [HAVE_LIBCURSES]: If SAVE_CHAR is not ERR, return
+	SAVE_CHAR and clear it.
+	(checkkey) [HAVE_LIBCURSES]: If SAVE_CHAR is not ERR, return
+	SAVE_CHAR. If C is not ERR, set SAVE_CHAR to C.
+	
+1999-07-14  Pavel Roskin  <pavel_roskin@geocities.com>
+
+	* stage2/char_io.c (get_cmdline) [GRUB_UTIL]: Recognize
+	backspace when ncurses fails to do this.
+
+	* grub/asmstub.c (grub_stage2) [HAVE_LIBCURSES]: Call wtimeout
+	instead of nodelay.
+	(getkey) [HAVE_LIBCURSES]: Likewise.
+	
 1999-07-14  OKUJI Yoshinori  <okuji@kuicr.kyoto-u.ac.jp>
 
 	* stage1/stage1_lba.S (probe_values): New variable. This is not

README

@@ -21,12 +21,6 @@ you use the following utilities:
 and 2.9.1.0.x, and we support only 2.9.1.0.x. It is available from
 ftp.XX.kernel.org (XX is the country code, such as `jp').
 
-* ncurses 4.0 and later (1.9.9 is too buggy, so don't use it.)
-
-  Ncurses is used for /sbin/grub, so it may not be needed if you don't
-use /sbin/grub. Ncurses 4.0 is available from many ftp sites. (Should we
-use terminfo or termcap directly?)
-
 
 These below are required when you develop GRUB or when you get it from
 the CVS:
@@ -35,17 +29,17 @@ the CVS:
 
   Autoconf 2.13 has a bug that can't handle any macro with arguments,
 so you need to get the later version from the CVS. See
-http://sourceware.cygnus.com/autoconf for more information.
+http://sourceware.cygnus.com/autoconf/ for more information.
 
 * automake 19990620 and later
 
   The new feature, per-executable flags, is requred, so you need to get
 an unreleased version from the CVS. See
-http://sourceware.cygnus.com/automake for more information.
+http://sourceware.cygnus.com/automake/ for more information.
 
 * texinfo 3.12h and later
 
-  The latest snapshot of Texinfo is available from alpha.gnu.org.
+  The latest snapshot of Texinfo is available from ftp.texinfo.org.
 
 
 See the file INSTALL for instructions on how to build and install the

docs/grub.texi

@@ -1081,7 +1081,7 @@ which are unknown.
 @item 10 : Unsupported Multiboot features requested
 This error is returned when the Multiboot features word in the Multiboot
 header requires a feature that is not recognized. The point of this is
-that the kernel requires special handling which GRUB is likely usable to
+that the kernel requires special handling which GRUB is likely unable to
 provide.
 
 @item 11 : Device string unrecognizable

grub/asmstub.c

@@ -220,7 +220,7 @@ grub_stage2 (void)
       nonl ();
       scrollok (stdscr, TRUE);
       keypad (stdscr, TRUE);
-      nodelay (stdscr, TRUE);
+      wtimeout (stdscr, 100);
     }
 #endif
 
@@ -443,6 +443,13 @@ grub_putchar (int c)
 }
 
 
+/* The store for ungetch simulation. This is necessary, because
+   ncurses-1.9.9g is still used in the world and its ungetch is
+   completely broken.  */
+#ifdef HAVE_LIBCURSES
+static int save_char = ERR;
+#endif
+
 /* returns packed BIOS/ASCII code */
 int
 getkey (void)
@@ -451,9 +458,18 @@ getkey (void)
   if (use_curses)
     {
       int c;
-      nodelay (stdscr, FALSE);
+
+      /* If checkkey has already got a character, then return it.  */
+      if (save_char != ERR)
+	{
+	  c = save_char;
+	  save_char = ERR;
+	  return c;
+	}
+      
+      wtimeout (stdscr, -1);
       c = getch ();
-      nodelay (stdscr, TRUE);
+      wtimeout (stdscr, 100);
       return c;
     }
 #endif
@@ -470,10 +486,16 @@ checkkey (void)
   if (use_curses)
     {
       int c;
+
+      /* Check for SAVE_CHAR. This should not be true, because this
+	 means checkkey is called twice continuously.  */
+      if (save_char != ERR)
+	return save_char;
+      
       c = getch ();
       /* If C is not ERR, then put it back in the input queue.  */
       if (c != ERR)
-	ungetch (c);	/* FIXME: ncurses-1.9.9g ungetch is buggy.  */
+	save_char = c;
       return c;
     }
 #endif

stage2/char_io.c

@@ -326,6 +326,9 @@ get_cmdline (char *prompt, char *commands, char *cmdline, int maxlen,
 	  lpos ++;
 	  /* fallthrough is on purpose! */
 	case 8:		/* C-h backspace */
+#ifdef GRUB_UTIL
+	case 127:	/* also backspace */
+#endif
 	  if (lpos > 0)
 	    {
 	      int i;