Consider monospace font as plain text

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

@@ -894,6 +894,12 @@ public class HtmlHelper {
                             if (!text_font)
                                 continue;
 
+                            if (!TextUtils.isEmpty(value)) {
+                                List<String> faces = StyleHelper.getTypeFaces(value);
+                                if (faces.contains("monospace"))
+                                    element.attr("x-plain", "true");
+                            }
+
                             // https://developer.mozilla.org/en-US/docs/Web/CSS/font-family
                             sb.append(key).append(":").append(value).append(";");
                             break;

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

@@ -1816,14 +1816,7 @@ public class StyleHelper {
         return new CustomTypefaceSpan(family, getTypeface(family, context));
     }
 
-    static Typeface getTypeface(String family, Context context) {
-        if (TextUtils.isEmpty(family))
-            return Typeface.DEFAULT;
-
-        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
-        boolean bundled_fonts = prefs.getBoolean("bundled_fonts", true);
-        boolean narrow_fonts = prefs.getBoolean("narrow_fonts", false);
-
+    static List<String> getTypeFaces(String family) {
         List<String> faces = new ArrayList<>();
         for (String face : family.split(","))
             faces.add(face
@@ -1831,8 +1824,19 @@ public class StyleHelper {
                     .toLowerCase(Locale.ROOT)
                     .replace("'", "")
                     .replace("\"", ""));
+        return faces;
+    }
+
+    static Typeface getTypeface(String family, Context context) {
+        if (TextUtils.isEmpty(family))
+            return Typeface.DEFAULT;
+
+        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
+        boolean bundled_fonts = prefs.getBoolean("bundled_fonts", true);
+        boolean narrow_fonts = prefs.getBoolean("narrow_fonts", false);
 
         try {
+            List<String> faces = getTypeFaces(family);
 
             if (faces.contains("fairemail"))
                 return ResourcesCompat.getFont(context.getApplicationContext(), R.font.fantasy);