FreeTypeFontGenerator - Adding characters

[Descartes]

Hi

I'm creating BitmapFont using FreeTypeFontGenerator.
I've created a large list of characters that may appear, however since the strings I display are received dynamically, I cannot forecast all possible characters and many times some characters missing.

I'm trying to figure a way where I can recognize a new char is added and add it to the BitmapFont.
I'm considering checking for new char and recreating the Bitmap font if necessary, however this looks like a pretty big overhead, there must be a better solution for that.

Anyone know of an effective way to deal with these cases ?

[evilentity]

How large is large? If you really cant just create a font for all of them this is best you can do.

[Descartes]

500 chars, where most of them are rare.