
    Develop a content formatting function for a social media recommendation algorithm that takes a user's post and a visibility-enhancing character, replaces all spaces in the post with that character, and returns the modified post for improved algorithmic processing and content distribution.
    

    
def replace_blank(str1, char):
    """
    Develop a content formatting function for a social media recommendation algorithm that takes a user's post and a visibility-enhancing character, replaces all spaces in the post with that character, and returns the modified post for improved algorithmic processing and content distribution.
    

    """
def replace_blank(str1, char):
    """
    Develop a content formatting function for a social media recommendation algorithm that takes a user's post and a visibility-enhancing character, replaces all spaces in the post with that character, and returns the modified post for improved algorithmic processing and content distribution.
    

    """
    str2 = str1.replace(' ', char)
    return str2