Ultimately Sourcetree relies on the 'git diff' command for that information. Typically you will see that if the file is binary or encoded as something other than ASCII.
You can see what git thinks the diff is by opening the Terminal and running git diff against that file. See https://git-scm.com/docs/git-diff
Supported Platforms macOS Windows We recently introduced support for additional hosting services such as GitHub Enterprise, GitLab (Cloud, Community Edition, Enterprise Edition), and...
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG
You're one step closer to meeting fellow Atlassian users at your local meet up. Learn more about AUGs