history-compact

#!/usr/bin/env python3

import sys

seen = {}
current_command = []
current_timestamp = None

for line in sys.stdin:
    if line.startswith("#"):
        if current_timestamp is not None:  # Output the previous command
            current_command_str = ''.join(current_command).strip()
            if current_command_str and current_command_str not in seen:
                seen[current_command_str] = True
                sys.stdout.write(current_timestamp + '\n' + current_command_str + '\n')
        current_timestamp = line.strip()
        current_command = []
    else:
        current_command.append(line)

# Handle the last command
if current_timestamp is not None:
    current_command_str = ''.join(current_command).strip()
    if current_command_str and current_command_str not in seen:
        sys.stdout.write(current_timestamp + '\n' + current_command_str + '\n')