Working on better compatibility (now compliant with all the vttest test #1)

butterfly/bin/bhtml

@@ -0,0 +1,8 @@
+#!/usr/bin/env python
+from butterfly.escapes import html
+import fileinput
+import sys
+
+with html():
+    for line in fileinput.input():
+        sys.stdout.write(line)

butterfly/static/main.js

@@ -1053,6 +1053,19 @@
             if (ch === "$" || ch === "\"" || ch === " " || ch === "'") {
               break;
             }
+            if (ch <= " " || ch >= "~") {
+              if (ch === '\b') {
+                this.currentParam = (this.currentParam / 10) & 1;
+              }
+              if (ch === '\r') {
+                this.x = 0;
+              }
+              if (["\n", "\x0b", "\x0c"].indexOf(ch) >= 0) {
+                this.screen[this.y + this.shift].dirty = true;
+                this.nextLine();
+              }
+              break;
+            }
             this.params.push(this.currentParam);
             this.currentParam = 0;
             if (ch === ";") {
@@ -1174,7 +1187,7 @@
                 }
                 break;
               default:
-                console.error("Unknown CSI code: %s.", ch);
+                console.error("Unknown CSI code: %s (%d).", ch, ch.charCodeAt(0));
             }
             this.prefix = "";
             break;

coffees/term.coffee

@@ -877,6 +877,18 @@ class Terminal
           # '$', '"', ' ', '\''
           if ch is "$" or ch is "\"" or ch is " " or ch is "'"
             break
+
+          # Ignore garbage characters
+          if ch <= " " or ch >= "~"
+            if ch is '\b'
+              @currentParam = (@currentParam / 10) & 1
+            if ch is '\r'
+              @x = 0
+            if ["\n", "\x0b", "\x0c"].indexOf(ch) >= 0
+              @screen[@y + @shift].dirty = true
+              @nextLine()
+            break
+
           @params.push @currentParam
           @currentParam = 0
 
@@ -1064,7 +1076,7 @@ class Terminal
                 @softReset @params
 
             else
-              console.error "Unknown CSI code: %s.", ch
+              console.error "Unknown CSI code: %s (%d).", ch, ch.charCodeAt(0)
           @prefix = ""
 
         when State.dcs