fix backspace (it wraps and doesn't clear)

diff --git a/terminal.coffee b/terminal.coffee
index 751a53a..37d3971 100644 (file)
--- a/terminal.coffee
+++ b/terminal.coffee
@@ -83,10 +83,12 @@ class Terminal
                                when '\x0d' # cr
                                        @x = 0
                                when '\x08' # backspace
-                                       if @x > 0
+                                       if @x is 0
+                                               @x = @width - 1
+                                               if @y > 0
+                                                       @y -= 1
+                                       else
                                                @x -= 1
-                                               @text[@y][@x] = ' '
-                                               # should this set the attribute too?
                                when '\x0a', '\x0b' # lf, vertical tab (same thing)
                                        @wrap_to_next_line()
                                else