Feature request: backspace to return to category menu

[et2010]

Thanks for this great package! It would be greater If one could return to category menu with backspace.

I made a screenshot to demonstrate:

After deleting the last char, If I press backspace again, the completion buffer will be closed. What I want is to return to the first level category menu when I press backspace. Is it possible with Ivy?

[nashamri]

Hey @et2010 thanks for the kind words 😄
Hmm, I'm not sure how to go about this. Right now, the package uses completing-read to prompt for user completions and it works well for both camps (helm and ivy). There might be a way to achieve this with only completing-read (https://www.gnu.org/software/emacs/manual/html_node/elisp/Minibuffer-Completion.html). As you can see, the function accepts a history parameter. I haven't played with this before, so I'm not sure. I certainly like the idea, but I don't have an obvious way of achieving it. I'm open for and suggestions or PRs.

[et2010]

Such feature can be implemented with Ivy API, I demonstrated a simple case in this post:

abo-abo/swiper#1640

But I haven't figure out how to deal with more than 2 levels or lists with complex structure