I just learned something that the rest of you probably already know. Sometimes when using ido you can get a long list of candidates. Scrolling through them can be a pain. That’s helped a bit by ido-vertical-mode, which I like very much and recommend. Sometimes, though, there’s just too many choices too easily pick one.
It turns out that if you type ‘?’ ido will pop open a buffer with all the possible completions in it. Then you can either click or press return on the desired item or, I suppose, use it do further refine your partial result.
This isn’t a problem I have very often but for those times when I do, this is a very handy solution. I’m happy to have discovered from this reddit post.