
{{alias}}( str, search, replacement, fromIndex )
    Replaces the substring before the last occurrence of a specified search
    string.

    If unable to find a search string, the function returns the input string
    unchanged.

    The function scans an input string from the starting index to the beginning
    of the string (i.e., backward).

    Parameters
    ----------
    str: string
        Input string.

    search: string
        Search string.

    replacement: string
        Replacement string.

    fromIndex: integer
        Starting index (inclusive). If less than zero, the starting index is
        resolved relative to the last string character, with the last string
        character corresponding to `fromIndex = -1`.

    Returns
    -------
    out: string
        Output string.

    Examples
    --------
    > var str = 'beep boop';
    > var out = {{alias}}( str, ' ', 'foo', str.length )
    'foo boop'
    > out = {{alias}}( str, 'o', 'foo', str.length )
    'fooop'
    > out = {{alias}}( 'Hello World!', 'o', 'foo', 5 )
    'fooo World!'

    See Also
    --------

