'Remove a tab from front of lines but allowing dedented lines.'

def looseDetab(self, text, level=1):

    lines = text.split('\n')
    for i in range(len(lines)):
        if lines[i].startswith((('    ' * markdown.TAB_LENGTH) * level)):
            lines[i] = lines[i][(markdown.TAB_LENGTH * level):]
    return '\n'.join(lines)
