files:
- 'git diff-index' compares contents of a "tree" object and the
- working directory (when '--cached' flag is not used) or a
- "tree" object and the index file (when '--cached' flag is
+ working directory (when `--cached` flag is not used) or a
+ "tree" object and the index file (when `--cached` flag is
used);
- 'git diff-files' compares contents of the index file and the