Better handling for Gmail's "plusreply" links

Gmail adds links with a 'gmail_plusreply' class when tagging someone on an email.
Trying to leave these intact. Otherwise, rendering deletes some of the attributes of these links (e.g. id)
causing Gmail to remove the new recipients (sometimes).

Author: Gal Falkon

src/common/mdh-html-to-text.js

@@ -105,6 +105,12 @@ MdhHtmlToText.prototype._preprocess = function() {
   // to remain intact.
   this.excludeTagBlocks('blockquote', true);
 
+  // Try to leave intact the links that Gmail adds when tagging someone on an email
+  this.preprocessInfo.html = this.preprocessInfo.html.replace(
+    /<a (class="gmail_plusreply"[^>]+)>([^<]*)<\/a>/ig,
+    '&lt;a $1&gt;$2&lt;\/a&gt;'
+  );
+
   // Try to leave intact the line that Gmail adds that says:
   //   On such-a-date, such-a-person <email addy> wrote:
   this.preprocessInfo.html = this.preprocessInfo.html.replace(