def parse_cfgstr_name_options(cfgstr):
    r"""
    Args:
        cfgstr (str):

    Returns:
        tuple: (cfgname, cfgopt_strs, subx)

    CommandLine:
        python -m utool.util_gridsearch --test-parse_cfgstr_name_options

    Example:
        >>> # ENABLE_DOCTEST
        >>> from utool.util_gridsearch import *  # NOQA
        >>> import utool as ut
        >>> cfgstr = 'default' + NAMEVARSEP + 'myvar1=myval1,myvar2=myval2'
        >>> (cfgname, cfgopt_strs, subx) = parse_cfgstr_name_options(cfgstr)
        >>> result = ('(cfgname, cfg_optstrs, subx) = %s' % (ut.repr2((cfgname, cfgopt_strs, subx)),))
        >>> print(result)
        (cfgname, cfg_optstrs, subx) = ('default', 'myvar1=myval1,myvar2=myval2', None)

    Example:
        >>> # ENABLE_DOCTEST
        >>> from utool.util_gridsearch import *  # NOQA
        >>> import utool as ut
        >>> cfgstr = 'default[0:1]' + NAMEVARSEP + 'myvar1=myval1,myvar2=myval2'
        >>> (cfgname, cfgopt_strs, subx) = parse_cfgstr_name_options(cfgstr)
        >>> result = ('(cfgname, cfg_optstrs, subx) = %s' % (ut.repr2((cfgname, cfgopt_strs, subx)),))
        >>> print(result)
        (cfgname, cfg_optstrs, subx) = ('default', 'myvar1=myval1,myvar2=myval2', slice(0, 1, None))

    Example:
        >>> # ENABLE_DOCTEST
        >>> from utool.util_gridsearch import *  # NOQA
        >>> import utool as ut
        >>> cfgstr = 'default[0]' + NAMEVARSEP + 'myvar1=myval1,myvar2=myval2'
        >>> (cfgname, cfgopt_strs, subx) = parse_cfgstr_name_options(cfgstr)
        >>> result = ('(cfgname, cfg_optstrs, subx) = %s' % (ut.repr2((cfgname, cfgopt_strs, subx)),))
        >>> print(result)
        (cfgname, cfg_optstrs, subx) = ('default', 'myvar1=myval1,myvar2=myval2', [0])
    """
    import utool as ut
    cfgname_regex = ut.named_field('cfgname', r'[^\[:]*')  # name is optional
    subx_regex = r'\[' + ut.named_field('subx', r'[^\]]*') + r'\]'
    cfgopt_regex = re.escape(NAMEVARSEP) + ut.named_field('cfgopt', '.*')
    regex_str = cfgname_regex + ('(%s)?' % (subx_regex,)) + ('(%s)?' % (cfgopt_regex,))
    match = re.match(regex_str, cfgstr)
    assert match is not None, 'parsing of cfgstr failed'
    groupdict = match.groupdict()
    cfgname = groupdict['cfgname']
    if cfgname == '':
        cfgname = 'default'
    cfgopt_strs = groupdict.get('cfgopt', None)
    subx_str = groupdict.get('subx', None)
    if cfgopt_strs is None:
        cfgopt_strs = ''
    subx = ut.fuzzy_subset(subx_str)
    return cfgname, cfgopt_strs, subx
r"""
    Args:
        cfgstr (str):

    Returns:
        tuple: (cfgname, cfgopt_strs, subx)

    CommandLine:
        python -m utool.util_gridsearch --test-parse_cfgstr_name_options

    Example:
        >>> # ENABLE_DOCTEST
        >>> from utool.util_gridsearch import *  # NOQA
        >>> import utool as ut
        >>> cfgstr = 'default' + NAMEVARSEP + 'myvar1=myval1,myvar2=myval2'
        >>> (cfgname, cfgopt_strs, subx) = parse_cfgstr_name_options(cfgstr)
        >>> result = ('(cfgname, cfg_optstrs, subx) = %s' % (ut.repr2((cfgname, cfgopt_strs, subx)),))
        >>> print(result)
        (cfgname, cfg_optstrs, subx) = ('default', 'myvar1=myval1,myvar2=myval2', None)

    Example:
        >>> # ENABLE_DOCTEST
        >>> from utool.util_gridsearch import *  # NOQA
        >>> import utool as ut
        >>> cfgstr = 'default[0:1]' + NAMEVARSEP + 'myvar1=myval1,myvar2=myval2'
        >>> (cfgname, cfgopt_strs, subx) = parse_cfgstr_name_options(cfgstr)
        >>> result = ('(cfgname, cfg_optstrs, subx) = %s' % (ut.repr2((cfgname, cfgopt_strs, subx)),))
        >>> print(result)
        (cfgname, cfg_optstrs, subx) = ('default', 'myvar1=myval1,myvar2=myval2', slice(0, 1, None))

    Example:
        >>> # ENABLE_DOCTEST
        >>> from utool.util_gridsearch import *  # NOQA
        >>> import utool as ut
        >>> cfgstr = 'default[0]' + NAMEVARSEP + 'myvar1=myval1,myvar2=myval2'
        >>> (cfgname, cfgopt_strs, subx) = parse_cfgstr_name_options(cfgstr)
        >>> result = ('(cfgname, cfg_optstrs, subx) = %s' % (ut.repr2((cfgname, cfgopt_strs, subx)),))
        >>> print(result)
        (cfgname, cfg_optstrs, subx) = ('default', 'myvar1=myval1,myvar2=myval2', [0])