Allow list for tracking changes in git

You can set up an allow list instead of a block list for tracking file changes in git by ignoring all file changes, then use the ! operator to track just the files you want to track.

# Ignore all files
*

# Don't ignore .gitignore
!.gitignore

# Allow list
!file-i-want-to-track.md
!file2-i-want-to-track.md

To track files nested in subdirectories, you must add all directories and subdirectories and the nested file.

# Ignore all files
*

# Don't ignore .gitignore
!.gitignore

# Allow list
!nested/
!nested/nested-file-i-want-to-track.md