Line by line diff that highlights changes from one line to the next. Prototype kindly authored by ChatGPT :)

difflines

#!/usr/bin/env python3
import difflib
import fileinput

def display_diff(diff):
    for item in diff:
        action, data = item[0], item[2:]
        if action == ' ':
            print(data, end='')
        elif action == '-':
            print(f"\033[91m{data}\033[0m", end='')  # Use red color for deletions
        elif action == '+':
            print(f"\033[92m{data}\033[0m", end='')  # Use green color for additions

prevline = None
for line in fileinput.input():
    if prevline is None:
        prevline = line
        continue

    diff = difflib.ndiff(prevline, line)
    display_diff(diff)
    prevline = line