560   int j;                /* Next slot to fill in on z[] */  in sqlite3_normalize()  local
569   for(i=j=0; zSql[i]; i += n){  in sqlite3_normalize()
580         z[j++] = '?';  in sqlite3_normalize()
586           if( (j>=3 && strncmp(z+j-2,"is",2)==0 && !IdChar(z[j-3]))  in sqlite3_normalize()
587            || (j>=4 && strncmp(z+j-3,"not",3)==0 && !IdChar(z[j-4]))  in sqlite3_normalize()
592             z[j++] = '?';  in sqlite3_normalize()
596         if( j>0 && IdChar(z[j-1]) && IdChar(zSql[i]) ) z[j++] = ' ';  in sqlite3_normalize()
598           z[j++] = sqlite3Tolower(zSql[i+k]);  in sqlite3_normalize()
604   while( j>0 && z[j-1]==' ' ){ j--; }  in sqlite3_normalize()
605   if( j>0 && z[j-1]!=';' ){ z[j++] = ';'; }  in sqlite3_normalize()
606   z[j] = 0;  in sqlite3_normalize()
610   for(i=0; i<j; i=n){  in sqlite3_normalize()
627       z = sqlite3_realloc64(z, j+(5-k)+1);  in sqlite3_normalize()
629       memmove(z+n+5, z+n+k, j-(n+k));  in sqlite3_normalize()
631       memmove(z+n+5, z+n+k, j-(n+k));  in sqlite3_normalize()
633     j = j-k+5;  in sqlite3_normalize()
634     z[j] = 0;  in sqlite3_normalize()