From mboxrd@z Thu Jan  1 00:00:00 1970
From: erik quanstrom <quanstro@quanstro.net>
Date: Sun, 30 Mar 2014 12:26:16 -0400
To: 9fans@9fans.net
Message-ID: <47ce4a1e83ccab956e28cc2b42fe2ba6@brasstown.quanstro.net>
In-Reply-To: <476cf0fa086df162666e769d2a91802d@felloff.net>
References: <476cf0fa086df162666e769d2a91802d@felloff.net>
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Subject: Re: [9fans] a strange bug in grep
Topicbox-Message-UUID: d2cfdd80-ead8-11e9-9d60-3106f5b1d025

> 0xxxxxxx
> 110xxxxx 10mmmmmm
> 1110xxxx 10mmmmmm 10mmmmmm
> 11110xxx 10mmmmmm 10mmmmmm 10mmmmmm
>
> m = tab2[i]
> x = ~m
[...]
>
> Rune	tab2[] =
> {
> 	0x003f,
> 	0x0fff,
> 	0x3ffff,
> };
>
> makes snese?

doesn't a 3-bit mask -> 7 not 3?
i read tab2[] as the number of possibilties for byte 1,
assuming not ascii.

if i've got that wrong, explain it again.  :-)

- erik