preview/plaintorich: add <br> tags at end of text/plain lines instead of using <pre> tag (allows line wrapping).

src/query/plaintorich.cpp

@@ -435,6 +435,8 @@ bool PlainToRich::plaintorich(const string& in,
             if (eol > 2)
                 eol = 2;
             while (eol) {
+		if (!m_inputhtml && m_eolbr)
+		    *olit += "<br>";
                 *olit += "\n";
                 eol--;
             }

src/query/plaintorich.h

@@ -89,6 +89,8 @@ public:
 protected:
     static const string snull;
     bool m_inputhtml;
+    // Use <br> to break plain text lines (else caller has used a <pre> tag)
+    bool m_eolbr; 
 };
 
 #endif /* _PLAINTORICH_H_INCLUDED_ */