The source project of this merge request has been removed.
pacdiff: add option to view diffs in 3-way fashion
add -3/--threeway option to view diffs in 3-way fashion. this is similar to the 3-way merge, but instead of merging, it opens all three files in $diffprog.
if the previous package version of the candidate is not available in pacman's cache or if the file fails to extract, it falls back to regular 2-way diff.