After opening and editing files with nvim in yazi, the preview is not updated automatically.

[otakutyrant]

I have to move the cursor between files to update the preview.

[sxyazi]

This is intentional and a compromise for performance.

Currently, only changes in any one of the three elements (url, mime, skip) trigger a re-preview. It's simple to re-preview every time a file changes (content, permissions, owner, group, etc.), but it's not an efficient way.

[otakutyrant]

My CPU is Intel(R) Core(TM) i7-6700K CPU @ 4.00GHz and I do not feel any lag in preview when I move between items. Does this performance loss really matter?

[sxyazi]

I really want this feature, but I'm not sure how to implement it at the moment. Please consider:

On an older machine where the current cursor file is continuously appended to at a millisecond level, how should Yazi handle re-previews?

Should it frequently spawn processes for files like videos and PDFs that rely on other tools (ffmpegthumbnailer, poppler, etc.)?

[otakutyrant]

Maybe the title is not clear, I mean I open a file with neovim in yazi, edit it explicitly, and quit, the preview is not updated as expected. So just trigger update when I quit and the files is changed, and it is uncessary to supervise the file at other time.

[sxyazi]

The preview is triggered by a watcher, which relies on file change notifications from the operating system and is independent of whether the file is opened.

If you expect that the preview should only be re-previewed when a file is opened and its content changes, I believe this is not a good way. It would lead to inconsistent preview behavior, meaning that any other method causing a content change would not trigger a re-preview.

[sxyazi]

Fixed by #360

[github-actions]

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