When should pdf files be tracked in a Git repository and when not

Question

I am developing a LateX package (http://www.openlilylib.org/lilyglyphs) which contains a number of small PDF files. Currently there are only a few dozens of them but as the

Answer 1

If the documents don't change, there is no reason to track their changes in git. No revisions, no need for revision control.

But if they do change over time, and someone may need to consult the old document versions for any reason, consider these questions:

1. Is it impossible or impractical to recreate the old versions of the documents?
2. Is there any underlying data outside of version control that has changed, or is it still in the same state?
3. Is the data in the documents tied to source code releases?

If the answers to these questions are yes, then they may be good candidates for version control under git.