First, make sure you’re using the coloured output (e.g. with git diff --color
) and that you’ve enabled whitespace highlighting with (e.g.)
git config color.diff.whitespace "red reverse"
This might not work in all cases, however, as git
doesn’t appear to highlight trailing whitespace for removed lines. To see whitespace that you’ve deleted, simply use
git diff -R
to put the whitespace on the ‘added’ side of the comparison, where it does get highlighted.
For more detail, see the answers at this SO question.