fixed some paging bugs, added fault handlers and new programs

1 files changed, 9 insertions, 5 deletions

diff --git a/src/user/knob/user.c b/src/user/knob/user.c
index 4ef3321..c84977c 100644
--- a/src/user/knob/user.c
+++ b/src/user/knob/user.c
@@ -165,16 +165,20 @@ uint32_t ask_user_line_sz(char *sz, uint32_t max_length) {
       goto replace;
     if (key & 0x80)
       goto replace;//TODO
+    if (key == '\b') {
+      if (i) {
+        --i;
+        _log_string("\b");
+      }
+      goto replace;
+    }
 
     log_buf[0] = key;
     _log_string(log_buf);
 
-    if (key == '\b')
-      i -= i ? 2 : 1;
-    else if (key == '\n')
+    if (key == '\n')
       break;
-    else
-      sz[i] = key;
+    sz[i] = key;
   }
 
   sz[i] = '\0';