#!/usr/bin/env python
"""A wrap for itex2MML, delete the extra blank line.
you can use it as itex2MML.

For example:

echo '$a_b$' | itex2MML.py
"""

import sys
import os

def main():
    fin, fo = os.popen2('itex2MML')
    fin.write(sys.stdin.read())
    fin.close()
    for line in fo:
        line = line.strip()
        if line:
            print line

if __name__ == '__main__':
    main()