Right now, glyphs can be given a unicode name by assinging the Illustrator object an ID (name) with a unicode value. So, for example, “U+20AC” instead of €. That works very nice and straight forward.
However, I work with SVG and I sometimes to processing on the source of the SVG. When illustrator exports the id of the object, it substitutes the “+” with an ugly and impractical escape code:
<path id="U_x2B_20ac" …
Proposal: Could future Fontself allow for another character besides the “+” to separate the U from the unicode? For example, a hyphen or an underscore?