m4_define(`hm_arg_must', `')
m4_define(`hm_arg_socktype', `
Tvbf($'`1==SOCK_STREAM ? " $'`1=SOCK_STREAM" : " $'`1=SOCK_DGRAM");')
+ m4_define(`hm_arg_addrfam', `
+ Tvbf($'`1==PF_INET ? " $'`1=PF_INET" :
+ $'`1==PF_INET6 ? " $'`1=PF_INET6" :
+ " $'`1=AF_???");')
m4_define(`hm_arg_ign', `')
m4_define(`hm_arg_fd', `Tvbf(" $'`1=%d",$'`1);')
m4_define(`hm_arg_fcntl_cmd_arg', `