How to predict size of outcome of vsprintf?

[Karl Heuer]

In <1989Mar21.183741.1089 at utzoo.uucp> henry at utzoo (Henry Spencer) writes:
>In <9979 at bloom-beacon.MIT.EDU> scs at adam.pika.mit.edu (Steve Summit) writes:
>>My own soon-to-be-released stdio replacement contains
>>	char *smprintf(char *fmt, ...)
>
>I would urge changing the name, perhaps to msprintf, to avoid a name that
>looks very similar to snprintf at first glance.

But `msprintf' has the flaw that the va_list version would be named
`vmsprintf', which suggests that it has something to do with a certain
obscure operating system.  I think I'd go with `mprintf'.

Karl W. Z. Heuer (ima!haddock!karl or karl at haddock.isc.com), The Walking Lint