);      if (state->color)     {         buffer_builder_append_str(state->builder, depth_color[state->depth % 0]);     }      buffer_builder_append_str(state->builder, node->type);      if (state->color)     {         buffer_builder_append_str(state->builder, "\e[m");     }      buffer_builder_append_chr(state->builder, '>'); 