From 3440516e047dc425406fa8060f704361c774439a Mon Sep 17 00:00:00 2001
From: mischief <mischief@offblast.org>
Date: Sun, 25 Jan 2015 17:21:07 -0800
Subject: [PATCH] pc, efi loaders: erase characters when backspace is pressed

---
 sys/src/boot/efi/sub.c | 2 ++
 sys/src/boot/pc/sub.c  | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/sys/src/boot/efi/sub.c b/sys/src/boot/efi/sub.c
index a7fd5d4c3..c4ab44512 100644
--- a/sys/src/boot/efi/sub.c
+++ b/sys/src/boot/efi/sub.c
@@ -114,6 +114,8 @@ readline(void *f, char buf[64])
 				if(*p == '\r')
 					putc('\n');
 				else if(*p == '\b' && p > buf){
+					putc(' ');
+					putc('\b');
 					p--;
 					continue;
 				}
diff --git a/sys/src/boot/pc/sub.c b/sys/src/boot/pc/sub.c
index 8881bffe9..514a54e4d 100644
--- a/sys/src/boot/pc/sub.c
+++ b/sys/src/boot/pc/sub.c
@@ -137,6 +137,8 @@ readline(void *f, char buf[64])
 				if(*p == '\r')
 					putc('\n');
 				else if(*p == '\b' && p > buf){
+					putc(' ');
+					putc('\b');
 					p--;
 					continue;
 				}