In terms of file contents, I have a bugfix commit somewhere that just adds a single newline to a config file (no line deleted in the diff). We were using somet

In terms of file contents, I have a bugfix commit somewhere that just adds a single newline to a config file (no line deleted in the diff). We were using something that had its own own custom parser for what looked like an INI file, and we managed to find an edge case where the wrong number of blank lines would break it.