How to open new buffer without replacing the current one?

Hi, when I try to open a single file it replaces the current buffer or file that I'm working with, I'm aware of the `batch-mode`. However, I use `startify` for opening a single file while I already have one opened. Is it possible to open a new file in a tab-split or vertical split without replacing the current buffer or file that I'm working with?

For now, what I do is press `v` to `mark/tag` the file I want to open as well as the current file that I'm currently working with so that the current file will not be replaced and the new file will open in a `tab-split` view.

Thanks!

Start by reviewing vim-startify's single-file opening behavior and the existing batch-mode and mark/tag workflows. Determine whether opening a file in a tab or vertical split can be supported without replacing the current buffer; done means the requested split behavior works while preserving the current file.

Written by the indexing model from the issue text.