How to disable Mavericks' emoji shortcut
You can change the shortcut from System Preferences:



Either three periods or an ellipsis character should work.

You can disable the shortcut by modifying ~/Library/Preferences/.GlobalPreferences.plist:

defaults write -g NSUserKeyEquivalents -dict-add 'Special Characters...' '\0'


Quit and reopen applications to apply the changes made with the defaults command.