Allow underscore in attribute and element names (#127)

Chuck Dumont · mikesamuel · commit 78f5461c0a33 · 2017-10-16T11:54:58.000-04:00
diff --git a/src/main/java/org/owasp/html/HtmlStreamRenderer.java b/src/main/java/org/owasp/html/HtmlStreamRenderer.java
@@ -364,6 +364,7 @@ static boolean isValidHtmlName(String name) {
           if (i == 0 || i + 1 == n) { return false; }
           break;
         case '-':
+        case '_':
           if (i == 0 || i + 1 == n) { return false; }
           break;
         default:
