> I remembered reading of, and using, the %q format, but %H is new to me.
>  The web version of print(2) doesn’t describe it, so I went to the source.
> 
> In libc.h I found
>       #pragma varargck        type    "<"     void*
>       #pragma varargck        type    "["     void*
>       #pragma varargck        type    "H"     void*
>       #pragma varargck        type    "lH"    void*
> but none of these are in the knownfmt[] array in sys/src/libc/fmt/fmt.c
> and I don’t see where fmtinstall() is called for them.
> 
> What do these formats do?

encodefmt(2).

- erik

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