Properly autolink URLs with unescaped parentheses

app/src/main/java/eu/faircode/email/HtmlHelper.java

@@ -131,9 +131,15 @@ public class HtmlHelper {
         int end = 0;
         while (matcher.find()) {
             sb.append(Html.escapeHtml(text.substring(end, matcher.start())));
-            String ref = Html.escapeHtml(matcher.group());
+
+            String url = matcher.group();
+            if (url.endsWith(")") && !url.contains("(")) {
+                url = url.substring(0, url.length() - 1);
+            }
+
+            String ref = Html.escapeHtml(url);
             sb.append(String.format("<a href=\"%s\">%s</a>", ref, ref));
-            end = matcher.end();
+            end = matcher.start() + url.length();
         }
         sb.append(text.substring(end));
         return sb.toString();

app/src/test/java/eu/faircode/email/HtmlHelperTest.java

@@ -120,10 +120,10 @@ public class HtmlHelperTest {
         testAutolink(
                 "See my homepage (at https://example.org), with lots of examples.",
 
-                // FIXME: The URL doesn't contain an opening parenthesis, therefore
+                // This URL doesn't contain an opening parenthesis, therefore
                 // the closing parenthesis probably also doesn't belong to it.
-                "See my homepage (at <a href=\"https://example.org)\">" +
-                        "https://example.org)</a>, with lots of examples."
+                "See my homepage (at <a href=\"https://example.org\">" +
+                        "https://example.org</a>), with lots of examples."
         );
 
         // The terminating sequence of a base64-encoded URL parameter is always