diff -ru shellinabox-2.14/shellinabox/vt100.jspp shellinabox-2.14.new/shellinabox/vt100.jspp
--- shellinabox-2.14/shellinabox/vt100.jspp	2012-04-21 21:30:44.000000000 +0400
+++ shellinabox-2.14.new/shellinabox/vt100.jspp	2014-03-27 16:33:31.012344164 +0400
@@ -2676,6 +2676,7 @@
       switch (key) {
       case  33: /* Page Up      */ this.scrollBack();                   return;
       case  34: /* Page Down    */ this.scrollFore();                   return;
+      case 173: /* _            */ ch = this.applyModifiers(95, event); break;
       default:                                                          break;
       }
     }
@@ -2738,6 +2739,7 @@
       case 123: /* F12          */ ch = '\u001B[24~';                   break;
       case 144: /* Num Lock     */                                      return;
       case 145: /* Scroll Lock  */                                      return;
+      case 173: /* -            */ ch = this.applyModifiers(45, event); break;
       case 186: /* ;            */ ch = this.applyModifiers(59, event); break;
       case 187: /* =            */ ch = this.applyModifiers(61, event); break;
       case 188: /* ,            */ ch = this.applyModifiers(44, event); break;
@@ -2882,6 +2884,7 @@
     case 109: /* - -> _ */ u = 45; s =  95; break;
     case 111: /* / -> ? */ u = 47; s =  63; break;
 
+    case 173: /* - -> _ */ u = 45; s =  95; break;
     case 186: /* ; -> : */ u = 59; s =  58; break;
     case 187: /* = -> + */ u = 61; s =  43; break;
     case 188: /* , -> < */ u = 44; s =  60; break;