Glyphs List Select Button from Codepoint(s), implement please

[lovedrea]

If functionality is added, you can choose any glyph list very easily.

[Bhikkhu Pesala]

If characters already exist in a font you cannot add them using the Insert Character dialogue, so it is not clear what you are trying to achieve.

If the aim is to select a number of characters to add to another font, you can simply use copy and paste.