Feature: command history

[vv9k]

So one feature I've been missing is the ability to navigate older commands I entered in command_mode, same thing appllies to search with /.

[archseer]

This ties into the persistent undo discussion with @cessen, we'd like to have some sort of persistent state for searches, commands, undo, jump lists etc.

Neovim had quite some work done in their ShaDa implementation so that this state can be written to by multiple running editor instances.

[kirawi]

This will be unblocked by #5608