Being a Vim user, I'm used to working with my keyboard, and while my IDE is heavily configured, I like to use default options for computers which are not mine, for instance. This should work.
A possible solution which should work on any default setup:
Type any letter or word (just a placeholder), and just hit Ctrl+D
. It selects the word.
Then press Ctrl+H
. It opens search and replace. Hit Tab
, type \x{<unicode>}
, making sure RegEx is activated (toggled with Alt+R
), and hit Ctrl+Shift+H
to replace it with the Unicode value.
Hit Esc
to close the search and replace menu.
If you need the same Unicode several times
After you've done one replacement, you can repeat the same process by selecting (with Ctrl+D
again) whatever you want, and Ctrl+Shift+H
will automatically replace it, since it stores your last replacement in memory. No need to bring up the menu again.
TL;DR:
Use search and replace. \x{<unicode}
in RegEx mode will serve as Unicode characters.