main.py

import shutil
import subprocess
import sys


def get_terminal_height():
    return shutil.get_terminal_size().lines


def is_output_redirected():
    return not sys.stdout.isatty()


def main():
    args = sys.argv[1:]

    if is_output_redirected():
        command = ["git", "--no-pager", "log"] + args
    else:
        command = ["git", "--no-pager", "log", "--color=always", "--decorate"] + args

    try:
        output = subprocess.check_output(command, stderr=subprocess.STDOUT, text=True)
    except subprocess.CalledProcessError as e:
        print(e.output, file=sys.stderr)
        sys.exit(e.returncode)

    lines = output.count("\n")
    term_height = get_terminal_height()

    if lines <= term_height:
        print(output, end="")
    else:
        subprocess.run(["git", "log"] + args)


if __name__ == "__main__":
    main()