Replace \b with \0177 as erase character

sys/char/input.c

@@ -55,7 +55,7 @@ void input_key(uint8_t key, uint8_t mods, const char *map0, const char *map1) {
         const char *map = (mods & INPUT_MOD_SHIFT) ? map1 : map0;
         uint8_t c = map[key];
 
-        if (c && c < 0x7F) {
+        if (c && c <= 0x7F) {
             if (mods & INPUT_MOD_CAPS) {
                 if (islower(c)) {
                     c = toupper(c);

sys/char/line.c

@@ -46,18 +46,19 @@ ssize_t line_read(struct chrdev *chr, void *buf, size_t pos, size_t lim) {
             }
         }
 
-        if (c == '\b') {
-            if (rd) {
+        if (c == 0x7F) {
+            if (chr->tc.c_iflag & ICANON) {
                 if (chr->tc.c_lflag & ECHOE) {
                     tty_puts(chr, "\033[D \033[D");
                 }
 
-                if (chr->tc.c_iflag & ICANON) {
+                if (rd) {
                     --wr;
                     ++rem;
                     --rd;
-                    continue;
                 }
+
+                continue;
             }
         }
 

sys/char/tty.c

@@ -68,7 +68,7 @@ void tty_data_write(struct chrdev *tty, char c) {
             ring_signal(&tty->buffer, RING_SIGNAL_RET);
         }
         break;
-    case '\b':
+    case 0x7F:
         ring_signal(&tty->buffer, 0);
         break;
     case '\033':