There are two features I really miss from jEdit:
* "dumb" autocomplete that will include any word in any open buffer, even if it's a different type (html/css/js). VSCode kindo of has word based autocomplete, but expected matches are just not there on third of teh time.
* HyperSearch (search result in the sidebar) when searching in the current buffer only. So much better than having one search mode for single buffer, and a completely different one when serching through multiple files.