[Zirias]

Using input methods is the "technically best" solution of course, but it needs configuration and some application support, therefore I wanted something working with "plain X" :)

Sending fake key events is unfortunately "hacky". You need to temporarily switch the keyboard mapping, and many X applications have races between applying a new mapping and processing key press events, that's why I added (now configurable, new release soon) delays... and also, I found applications (e.g. chromium) having issues to correctly combine ZWJ sequences from individual key events, so I added more "hacks" to help with that, also just made configurable.

To sidestep these issues, my tool also offers transfer via "primary selection": Just middle-click an emoji to select it, and middle-click again where you want to insert it. Downside: Two clicks instead of just one.