On 02/14/2011 01:03 AM, erik quanstrom wrote:
> that doesn't really work for me. either the kernel should always print
> as hex, or the decision should be made for the whole string. the \x
> notation requires that any \x be excaped. you potentially need to escape
> both " and \. it's a difficult and non-standard quoting scheme for plan 9.
> if you think the kernel really needs to be making a decision based on
> utf-8/not utf-8 (not 7-bit ascii!), i would think the most standard way
> of formatting this would be nil, %.*q or %.*H.
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?
--Joel
