[PATCH] Fix backspace in the username login prompt

[Egor Ignatov]

This patch fixes an old bug when backspace key does not work in the
username login prompt. It allows BIDI type BN characters (control
chars like '\b') in the visual line. And when grub_gfxterm_putchar
recieves this line it successfully processes backspace.

Signed-off-by: Egor Ignatov <egori@altlinux.org>
---
Hi, I'd like to try to propose this patch again. I'm new to the open
source community, so any feedback and suggestions will be appreciated.

 grub/grub-core/normal/charset.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/grub/grub-core/normal/charset.c b/grub/grub-core/normal/charset.c
index b0ab47d73..30e819bdf 100644
--- a/grub/grub-core/normal/charset.c
+++ b/grub/grub-core/normal/charset.c
@@ -925,6 +925,7 @@ grub_bidi_line_logical_to_visual (const grub_uint32_t 
*logical,
            pop_stack ();
            break;
          case GRUB_BIDI_TYPE_BN:
+           visual_len++;
            break;
          case GRUB_BIDI_TYPE_R:
          case GRUB_BIDI_TYPE_AL:
-- 
2.25.4