Create simple menus in Vim that respond to key mappings.
See the usage in the doc file for more info.
For rarely-used actions in rarely used file types, I don't always remember mappings I've setup.
As an example, for Rails migrations, I might want mappings to
- run any pending migrations
- run just this current buffer's migration
- run this migration down
- re-run this migration (down then back up)
- copy the migration number to the clipboard
I don't do all of these often enough to remember the mappings so a menu is easier. I hit and then a single character to pick the action I want (e.g. a to run all pending migrations).
You can treat this menu like training wheels to help you learn mappings by having the menu keys correspond to your mappings (e.g. a in the menu runs all migrations so I know that I've bound <localleader>a to do the same). You can also just have the menu exist as its own thing and never bother having individual mappings for more rarely used items.