Description:

dwdiff is a front-end for the diff program that operates at the word
level instead of the line level. It is different from wdiff in that it
allows the user to specify what should be considered whitespace, and
in that it takes an optional list of characters that should be
considered delimiters. Delimiters are single characters that are
treated as if they are words, even when there is no whitespace
separating them from preceding words or delimiters. dwdiff is mostly
commandline compatible with wdiff. Only the --autopager, --terminal
and --avoid-wraps options are not supported.

The default output from dwdiff is the new text, with the deleted and
inserted parts annotated with markers. Command line options are
available to change both what is printed, and the markers.