vim-buffet VS vimfiles

You’re right, I essentially built my own plugin. And I know could use a plugin like vim-buftabline or vim-buffet to accomplish a similar look.

For vim you can use something like vim-buffet and for Neovim something like barbar.nvim

About tabbar, it's a different thing from statusline, I will be also designing tabline withing next few weeks, but it will look like default for now. Or you can take a look into Vim buffet https://github.com/bagrat/vim-buffet

As /u/Miserable-Ad-7341 said, simplest is to set the package.loaded name to nil and require it again. For a slightly more built-in feel, I set up SourceCmd autocmd for lua (with the surrounding code to toggle auto-sourcing on save for vim and lua files), with this function doing the sourcing. It'll completely reload any module I'm working on, or if it detects a configuration file (in lua/mia/, for me), it'll just reload that file.

I use this for my tabline. It simply shows all of the windows open in the tab instead of just the active window, using / to show vertical splits and | to show horizontal ones. I've found it immensely helpful. Ignore the comments, I planned on expanding the tabline to have a second line showing the alternate file of each window, but never got around to it. Doesn't seem necessary.

For example, here (it's not the best, but it illustrates my point).

I use these functions mapped to to resize the windows more like tmux. It makes a lot more intuitive sense, and lets me make small adjustments using the keyboard instead of the mouse.