🚀 go-pugleaf

In article <4klicn$ndl@solutions.solon.com>,
Ari Lukumies  <aril@cmt.lpr.mail.carel.fi> wrote:
>Peter Seebach wrote:
> >         int bangcvt(va_list *ap, char *s, int len, fmtspec *f) {
> >                 strncpy(s, strerror(errno), len);
> >                 s[len - 1] = '\0';
> >                 return strlen(s);
> >         }

>Given the above, how about calls like (well, not a pretty one, but you get the 
>idea...):

>	fprintf(stderr, "%-*.2!", something);

This would call
	bangcvt(&ap, buf, len, { '!', something, 2, FMT_LEFT });
and leave the interpretation of the width and precision up to bangcvt.
flags are or'ed together.

It might not work correctly; I think my sample implementation may have a bug
in handling flags.  The principle is as given, though.

-s