Does anyone know of a font that supports the unicode CJK extensions c, d, e? If you have such a font, do you know if it works with the MySQL utf8mb4 character set?
Babelstone Han claims to support all glyphs in Extension D, but only has partial support for C (37.1%) and E (19.5%).
Here's the download link (25.7MB) for HanaMinB (which supports these extensions). And here's a screenshot of a word processor with HanaMinB.ttf installed, displaying random glyphs from CJK Ext. E.