247     char c;  in out_vformat()  local
253       c = format[mm];  in out_vformat()
254       if (c == '\0' || c == '%') break;  in out_vformat()
264     if (c == '\0') break;  in out_vformat()
271       c = format[nn++];  in out_vformat()
272       if (c == '\0') { /* single trailing '%' ? */  in out_vformat()
273         c = '%';  in out_vformat()
274         o.Send(&c, 1);  in out_vformat()
276       } else if (c == '0') {  in out_vformat()
279       } else if (c == '-') {  in out_vformat()
282       } else if (c == ' ' || c == '+') {  in out_vformat()
283         sign = c;  in out_vformat()
290     if ((c >= '0' && c <= '9')) {  in out_vformat()
293       c = format[nn++];  in out_vformat()
297     if (c == '.') {  in out_vformat()
299       c = format[nn++];  in out_vformat()
303     switch (c) {  in out_vformat()
310         c = format[nn++];  in out_vformat()
318         c = format[nn++];  in out_vformat()
322         c = format[nn++];  in out_vformat()
326         c = format[nn++];  in out_vformat()
333     if (c == 's') {  in out_vformat()
339     } else if (c == 'c') {  in out_vformat()
344     } else if (c == 'p') {  in out_vformat()
349     } else if (c == 'd' || c == 'i' || c == 'o' || c == 'u' || c == 'x' || c == 'X') {  in out_vformat()
352       int is_signed = (c == 'd' || c == 'i' || c == 'o');  in out_vformat()
381       format_integer(buffer, sizeof(buffer), value, c);  in out_vformat()
382     } else if (c == '%') {  in out_vformat()