handle backspace

2 files changed, 11 insertions, 4 deletions

diff --git a/stage3/font.c b/stage3/font.c
index 69017ca..67127f6 100644
--- a/stage3/font.c
+++ b/stage3/font.c
@@ -113,8 +113,10 @@ void print_char(char c)
 			break;
 
 		case '\b':
-			if (cursor_x > 0)
+			if (cursor_x > 0) {
 				cursor_x--;
+				render_char(' ');
+			}
 			break;
 
 		case '\r':
diff --git a/stage3/main.c b/stage3/main.c
index c8ff971..30f1bbd 100644
--- a/stage3/main.c
+++ b/stage3/main.c
@@ -33,13 +33,18 @@ void keyboard_handler()
 
 		char c = keymap[e->data.scancode];
 		if (c != '\0') {
-			print_char(c);
-
-			if (c == '\n') {
+			if (c == '\b') {
+				if (buffer.len > 0) {
+					print_char(c);
+					buffer.len--;
+				}
+			} else if (c == '\n') {
+				print_char(c);
 				shell_run_cmd(buffer);
 				buffer.len = 0;
 				print(S("$ "));
 			} else {
+				print_char(c);
 				if (buffer.len == cap)
 					buffer.data = realloc(buffer.data, cap = cap ? cap*2 : 1);
 				buffer.data[buffer.len++] = c;