Enter Unicode characters with 8-digit hex code

Question

How do I enter Unicode characters like 𝓭 without copying it to the clipboard and pasting it?

Things I know:

• The command ga on the character 𝓭 gives me hex:0001d4ed.
• I can copy it on the clipboard and paste it via "+p.
• I know how to enter Unicode values that have a 4 digit hex code:
  <C-v>u for example <C-v>u03b1 gives the α character.

Answer 1

There is a Vim feature designed to simplify entering characters that cannot be typed directly. It is called Digraphs (see :help digraphs).

To define a custom digraph for entering ‘𝓭’, use an Ex command similar to the one below.

:dig dd 120045 

where 120045 is the decimal representation of ‘𝓭’, as one can easily confirm using the ga command.

Inserting a character using a digraph is simple: Type Ctrl+K followed by the shortcut of that digraph (dd for the above example).

Answer 2

You can use <C-v>U, that is, an uppercase u, to input an 8 digit hex codepoint character.

More information here and here.