The main way to use delta is to configure it as the pager for git: see Configuration.
Delta can also be used as a shorthand for diffing two files, even if they are not in a git repo: the following two commands do the same thing:
delta /somewhere/a.txt /somewhere/else/b.txt git diff /somewhere/a.txt /somewhere/else/b.txt
You can also use process substitution shell syntax with delta, e.g.
delta <(sort file1) <(sort file2)
In addition to git output, delta handles standard unified diff format, e.g.
diff -u a.txt b.txt | delta.
For Mercurial, you can add delta, with its command line options, to the
[pager] section of