Earlier quoted context omitted.
> Ctrl-Opt-Space for the character/emoji picker. I think this may not be the default; it doesn't work for me. While speaking of the character picker, does anyone know a way to get less broken search in the picker? For example, I frequently find myself looking for math italic characters in Unicode. Despite the description being, say, "MATHEMATICAL ITALIC SMALL A", it doesn't come up when I search for 'small'. In this…
Oops! Sorry! I meant Cmd-Opt-Space here. Also, yeah, the search is pretty janky in my usage as well.
Indeed, I thought that might be what you meant … but that opens the Finder search window for me, so I think that that shortcut also is not universal. Probably some of these differ depending on whether you've got a fresh install or an updated system that may carry along shortcuts from an older release.
EDIT: adsche (https://news.ycombinator.com/item?id=24092377) suggests ⌘⌃␣, and that works for me.