We can add this later if it is proven necessary, but it should not be
because:
1. User can run a subset of checkers via `:CheckHealth plugin1, ...,`
2. Healthcheck is a very rare operation. Optimizing it is not worth the
code/API complexity.
To healthcheck the "foo" plugin:
:CheckHealth foo
To healthcheck the "foo" and "bar" plugins:
:CheckHealth foo bar
To run all auto-discovered healthchecks:
:CheckHealth
- Use execute() instead of redir
- Fixed logic on suboptimal pyenv/virtualenv checks.
- Move system calls from strings to lists. Fixes#5218
- Add highlighting
- Automatically discover health checkers
- Add tests
Helped-by: Shougo Matsushita <Shougo.Matsu@gmail.com>
Helped-by: Tommy Allen <tommy@esdf.io>
Closes#4932
