Use ctrl+shift+u for unicode hex input

[jmcwilliams403]

Having Unicode hex input enabled is completely unreliable if any sequence is defined that begins with U followed by any legal hex character, including obvious ones like ⎄<u><a> ⇒ ă or ⎄<u><e> ⇒ ĕ etc. Perhaps Unicode input could instead be accessed via a separate hook modeled after GDK's ctrl+shift+U shortcut, but where it disables itself when a GDK application is in focus since it already has this functionality natively.

[Spire42]

You can already work around this by typing 0 (multiple times if necessary) between the initial u and the hexadecimal sequence.