Use project commands like `:FzfPreviewProjectFiles` and `:FzfPreviewProjectMruFiles` on non-git repos

[gitaarik]

Problems summary

I can't use project commands like :FzfPreviewProjectFiles and :FzfPreviewProjectMruFiles on non-git repos, even when I use ripgrep, which should make fzf-preview not require git.

Expected

That I can use project commands like :FzfPreviewProjectFiles and :FzfPreviewProjectMruFiles in non-git repo directories.

Proposed solution

So when you have ripgrep installed, the g:fzf_preview_filelist_command, which is used to get the file list from project, uses ripgrep instead of git. Also, you can overwrite g:fzf_preview_filelist_command to any kind of command. So we should not decide for the user whether they are allowed to use the project commands, just because we're not in a git repo.

If I remove this check on whether it's a git repo in these commands:

https://github.com/yuki-yano/fzf-preview.vim/blob/main/src/fzf/resource/project-files.ts#L8-L10
https://github.com/yuki-yano/fzf-preview.vim/blob/main/src/fzf/resource/project-mru.ts#L13-L15

It seems to fix the issue. I can make a PR for this if approved.

[GiuseppeMP]

@gitaarik Did you tried DirectoryFiles command?

@yuki-yano any thoughts?

[gitaarik]

@GiuseppeMP well there is no FzfPreviewDirectoryMruFiles, only FzfPreviewProjectMruFiles. I also point this out in #313. So if there would be a FzfPreviewDirectoryMruFiles command, then the project commands would maybe not even be necessary anymore, because we could consider every directory a project. This is of course only in the case ripgrep is installed, because only ripgrep is faster than git grep.