Hi Michael,

> If a wordRegex can make parts of diff disappear than there is problem
> deeper in the diff machinery.
It can do exactly that. The word regex determines what is a word, but
everything else is counted as "whitespace". The word diff view shows
only differences in words, not in whitespace (which is intentional,
since whitespace changes in things like LaTeX or HTML are not
interesting). Note that it doesn't show whitespace _differences_, but it
does show the whitespace itself (taken from the "new" version of the
file).


So, if the word regex somehow doesn't match the second line at all (or
at least not the differen part), the differences could get ignored.

> Can you trim this down to a minimal example?
That would be useful in any case.

Gr.

Matthijs