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.