Reveal invisible text while moving through swiper matches

[tarsius]

When I move through swiper matches I would like hidden text to be revealed so that I can actually see the context of the current match. It appears only the final match is ever revealed once the search is exited.

I dug around a bit and found swiper--ensure-visible, called in swiper--action. As a quick hack I added (with-ivy-window (swiper--ensure-visible)) to ivy-set-index, so that this would be done on every ivy-{next,prevous}-line. Of course that should only be done when actually using swiper, and probably not here, but as a temporary solution it might have worked. However while some revealing did happen once I had done that I ended up having to move down two matches and then one match up again to reveal that first match.

I was actually kinda surprised that automatic revealing doesn't work out of the box. And maybe I am just overlooking something, but searching the source for the relevant terms such as "reveal" and "invisible" didn't, uhm, reveal much.

[abo-abo]

Just checked in org-mode with everything hidden. Reveals still work correctly for me. It's a basic feature that's been around for a very long time.

See also swiper--update-input-ivy - this function is called each time a candidate changes. It calls isearch-range-invisible in turn.

[tarsius]

It calls isearch-range-invisible in turn.

You don't do anything with its value and according to its doc-string returning a value is all it does. (It does "merge" overlays, so that's a side-effect, but I don't think it makes invisible text visible.)

See also swiper--update-input-ivy - this function is called each time a candidate changes.

Using swiper--ensure-visible here (instead of isearch-range-invisible) reveals the current match (but obviously doesn't hide it again).

[tarsius]

But this appears to be a configuration issue on my end, with emacs -Q things seem to work. Let the init.el bisecting begin. Sorry for the noise. I'll let you know if I find anything relevant.

[tarsius]

I can reproduce this with just:

1. emacs -Q -L . --load swiper.el swiper.el --funcall outline-minor-mode --funcall reveal-mode --funcall outline-hide-entry
2. M-x swiper RET
3. ;;
4. C-n

It appears that reveal-mode has the opposite effect of the intended effect when using swiper.

[abo-abo]

Suggestions for a fix? I'm thinking about toggling reveal-mode off for the duration of swiper.

[tarsius]

Well, that's what I was considering as a work-around 😛 And as an official solution I think it would be fine in the short-run. I cannot offer any advice on a better method at this time, but I am working on a little outline related package myself, so maybe after I have studied the relevant code a bit more I can come up with something.

[abo-abo]

Thanks.

[tarsius]

Thank you!

(I should have reported this way earlier - it was driving me crazy.)