FishEye Source Diff - Differ between tabs and spaces in diff view

When examining a source commit in FishEye Diff, I wish there was someway to see whether whitespace is a tab (ASCII decimal 9) or a space (ASCII decimal 32).  Some developers commit code unaware that their text editor's settings decided to perform whitespace replacement.  As a result days go by with no one noticing the problem until the file gets loaded into an editor with different tab settings and the code is hard to read.