This is a very simple VSCode extension which converts a given set of (regular expression) patterns into a user-specified list of symbols.
Install this extension by searching 'Symbol Complete' in VSCode extensions.
Open up a new file and type something like
Replacements for all Greek symbols are added.
This extension also works with multiple selections.
Minor undo problems
Support for multiple selections.
0.0.6 — 0.0.8
Minor undo issue fixed
0.0.2 — 0.0.5