Fuzzy find files for showing file history

[screendriver]

Is your feature request related to a problem? Please describe.

Sometimes I want to show all commits for a given file to see all changes for that single file. lazygit already has this feature when you press <ctrl-s> ("view filter-by-path options...") but you have to enter the path by hand without the ability to search or autocomplete the path.

Describe the solution you'd like

It would be great if lazygit would have the ability to fuzzy find that file like you can do with fzf.

Describe alternatives you've considered

At the moment my workflow looks like this:

• I'm hitting <ctrl-s> ("enter path to filter by")
• then I'm hitting : ("execute custom command")
• then I'm entering / opening nnn with nnn -x
• I'm searching the file that I'm looking for and copy the path
• I'm leaving nnn and hit <cmd+v> to paste the copied path into the dialog that lazygit is still showing

So in general everything is working as expected but it's a little bit cumbersome and not so convenient / intuitive.

Additional context

See also the discussion here #1377

[jesseduffield]

I'm taking a look in https://github.com/junegunn/fzf and it's written in Go, with an MIT license, so we should be able to make use of its algorithm, but I'm not sure how to plug into it. I can see it has an algorithm package but can't see where it handles loading files. Or does fzf not actually load the files itself? I haven't really used it

[jesseduffield]

@screendriver could you give #1526 a go?