[lug] highlighting word-by-word differences?

[Jeffrey Siegal]

Neal McBurnett wrote:
> Ken also noted the "pdiff" program which diffs and pretty-prints the
> results in postscript.
> 
> pdiff is part of a2ps, and uses wdiff by default.

Interesting that Red Hat includes pdiff (which refernces wdiff in its 
man page) but not wdiff.  I wonder if pdiff actually tries to use the 
wdiff executable or has the wdiff code compile in.