I'm looking into cleaning up the Unicode library, specifically currently into dropping the charset conversion tables, which are unused 99% of the time because iconv is used instead (and iconv is a hard dependency).

One of the remaining uses of the hand-rolled charset conversion tables is the existence of a character composer and insertion dialog, which is documented here, and looks like this:

I was contemplating switching it to use iconv if possible, but looking further, it turns out this functionality has been broken (read: unusable) since late 2012 (bisected to f5fbd93, with the introduction of the new hotkey system).

So considering:

• It hasn't been usuable for 8 years and no one has complained
• The GDK backend doesn't actually implement support to make it work anyway
• If moving to GTK/Qt this likely would not be ported over
• There exist other, dedicated tools to do something similar (charmap, gucharmap etc., alt codes etc.)

My preference is to remove it, rather than try to fix it up. Thoughts?