Pass function to preview when used as library.

[SachinMaharana]

Is there a way to pass a function to preview when used as library?

Currently i am using it as

  let options = SkimOptionsBuilder::default()
        .height(Some("30%"))
        .color(Some("molokai"))
        .reverse(true)
        .preview(Some(
            "echo {} |  sed 's/  */ /g' | cut -d' ' -f2 | xargs ps -p",
        ))
        .header(Some("Filter Processes:"))
        .build()
        .unwrap();

I would like to pass a function(fn some(arg)) to preview. i did saw the docs but couldn't find any way to do it.

[alexxbb]

I have a draft of this feature in works: #407

[ghost]

Set preview to Some(...) value (it just can't be None). Now in your SkimItem implement preview and return one of the "Text" ItemPreview values.

Just make sure to never return ItemPreview::Global because this would invoke whatever you put in the preview config.

[kimono-koans]

@denkuy This actually works pretty well and now my only issue is that it feels laggy. I assume it's because we're back executing on one thread again. It might just be me of course, but, have you resolved this?

[kimono-koans]

I've toyed around with enough to think this is a bug. @SachinMaharana @denkuy and @alexxbb, am I crazy? Have you found a better solution?

I suppose maybe I'm trying to do something a little more intensive with fn preview() than most, but I feel like there should be a way to say "Hey, this little function is thread safe, please execute it in a different thread and don't block the interactive session" like when a thread feeds the main session fn run_with().

Thoughts?