Fifteen years and still learning: C-u C-\ TeX in emacs chooses the tex input system; if you then type \forall or \exists, it’ll insert the appropriate unicode codepoint. Sweet! It’s an input mode, not a major/minor mode. It has very nice tab completion too. Picked this up during a random ICFP conversation. 🙂
[update: fixed the key binding! ]
2 replies on “Emacs unicode fu”
Shouldn’t that be:
C-u C-\ TeX
…?
Oops, you’re right – thanks for pointing that out. 🙂 I’ve updated the post.