Improved builder

index.html

@@ -59,7 +59,7 @@ function Acels (client) {
     return h
   }
   this.convert = (event) => {
-    const accelerator = event.key === ' ' ? 'Space' : event.key.substr(0, 1).toUpperCase() + event.key.substr(1)
+    const accelerator = event.key === ' ' ? 'Space' : capitalize(event.key.replace('Arrow', ''))
     if ((event.ctrlKey || event.metaKey) && event.shiftKey) {
       return `CmdOrCtrl+Shift+${accelerator}`
     }
@@ -113,6 +113,7 @@ function Acels (client) {
   this.toggle = () => {
     this.el.className = this.el.className === 'hidden' ? '' : 'hidden'
   }
+  function capitalize (s) { return s.substr(0, 1).toUpperCase() + s.substr(1) }
 }
 'use strict'
 function Lisp (lib = {}) {