diff gurus? - howto alternate src/dst lines (do not aggregate) for pairwise line review of text document files?

[Zenaan Harkness]

Any diff (or git diff) gurus around?

I often review one text document file against an updated file, and wish to view each pair of lines for differences, so are there some combo of options to diff or git diff, to show the diffs in a repeated pair-wise fashion - i.e., just a single old line, followed by its modified new line, then repeat (and never group old lines, or new lines)?

Default diff and git diff behaviour is to aggregate as many 'old' lines as have been changed in localised group of lines (the "-" minus lines), followed by an aggregate of the correspondingly changed 'new' lines in a group (the "+" plus lines).

When groups of lines are aggregated like this, it is hard to do a pairwise review of each of pair of lines (old line, immediately followed by new line).

Sometimes this would even be beneficial when reviewing code, but mostly for reviewing text documents.

TIA,