[Search directory] allow customizing the file preview command

[neersighted]

Based on the current implementation for directories. Seems straightforward
enough to me, but please let me know if I overlooked something.

[PatrickF1]

🤯
No one has ever submitted a PR and actually updated the readme. Also you were so fast. THANK YOU!
EDIT: OH, AND YOU WROTE TESTS. Ahhh you're the best :)

[PatrickF1]

Btw, totally up to you, but you can commit normally and push. Don't need to amend and force push unless you like to :)
I don't care either way but some people like to see their commit history in their PR. And occasionally it comes in useful for big PRs when we decide on a previously passed-over solution.

[neersighted]

I'm generally of the 'polished' patch set school, so I tend to restructure PRs to maintain the most logical dev history + clean application of patches.

[PatrickF1]

Ah even better!

[PatrickF1]

Great work! I'll clean up a little from here and merge (sorry, I'm quite obsessive with wording). Thank you SO MUCH Bjorn. Collaborating with you in a tight feedback loop has been my pleasure.

[PatrickF1]

Btw, now that you have contributed such a major patch, it would mean a lot to me if you could star the repo. Thanks for considering it!

[kidonng]

A little bit late, but I'd like to thank both you! This is a really great feature, I can create really powerful preview now.

No one has ever submitted a PR and actually updated the readme.

I admit I'm bad at this, but at lease I did update the README sometime 😀

[PatrickF1]

Glad you like the feature. And thank you for linking to your "really powerful preview". I'm going to add it to the cookbook WIki page. Let me know if you have reservations about that and I'll remove it.