Provide a way to add spaces inside an initalizer list when formatting

[hughbe]

Bugzilla Link	35298
Version	5.0
OS	MacOS X

Extended Description

E.g.

static CapClass vtable = { CustomLineCapTypeAdjustableArrow,
gdip_adjust_arrowcap_setup,
gdip_adjust_arrowcap_clone_cap,
gdip_adjust_arrowcap_destroy,
gdip_adjust_arrowcap_draw };

Formatting this code with clang-format removes the spaces inside the initializer list:

static CapClass vtable = {CustomLineCapTypeAdjustableArrow,
gdip_adjust_arrowcap_setup,
gdip_adjust_arrowcap_clone_cap,
gdip_adjust_arrowcap_destroy,
gdip_adjust_arrowcap_draw};

Please provide a way (e.g. something like SpacesInSquareBrackets) to provide the functionality to add spaces inside an initializer list.

[llvmbot]

Have you tried setting Cpp11BracedListStyle to false?