show-me-git-change-logs.nu

gistfile1.txt

def show-me-git-change-logs [
    from_branch: string
    to_branch: string = "master"
] {
    print $"\nChangelogs for ($from_branch)...($to_branch):\n"

    # Recent subjects on the target branch (fetched once instead of per-commit)
    let recent = git log -n 100 --no-merges --pretty=format:%s $to_branch | lines

    let changelogs = (
        git log --oneline --no-merges --pretty=format:%s $"($from_branch)...($to_branch)"
        | lines
        | sort
        | each {|commit|
            if ($recent | any {|c| $c | str contains $commit }) {
                $"- ($commit) (prev)"
            } else {
                $"- ($commit)"
            }
        }
        | sort --reverse
        | uniq
    )

    let prev_commits = $changelogs | where {|it| $it | str contains "(prev)" }
    let new_commits  = $changelogs | where {|it| not ($it | str contains "(prev)") }

    if not ($prev_commits | is-empty) {
        print "=== Merged commits (probably, as it matched to the commit on the target branch) ==="
        print ($prev_commits | str join "\n")
        print ""
        print "=== New commits ==="
    }

    print ($new_commits | str join "\n")
}