From: Rob Pike <robpike@gmail.com>
To: Fans of the OS Plan 9 from Bell Labs <9fans@cse.psu.edu>
Subject: Re: [9fans] tcs bug
Date: Wed, 31 Aug 2005 15:57:27 +1000 [thread overview]
Message-ID: <7359f04905083022574d2fcde9@mail.gmail.com> (raw)
In-Reply-To: <BE150F4C-09E2-4701-B422-63143BAB69E1@ar.aichi-u.ac.jp>
ah yes, the dreaded partial rune problem. lots of programs
must cope with this issue.
-rob
On 8/31/05, arisawa@ar.aichi-u.ac.jp <arisawa@ar.aichi-u.ac.jp> wrote:
> Hello,
>
> tcs both for plan 9 and for unix has a bug in reading utf text.
> that comes from:
> utf_in(int fd, long *notused, struct convert *out){
> char buf[N];
> ...
> while((n = read(fd, buf+tot, N-tot)) >= 0){
> ...
> }
>
> in utf.c
>
> N is assigned to be 10000 in hdr.h
>
> if you set N to 10, you will find the problem more clearly:
> tcs cannot handle correctly utf character boundary.
>
> for example, assume a.txt have the content:
> aaaaaaaこの
>
> term% xd -c a.txt
> 0000000 a a a a a a a e3 81 93 e3 81 ae \n
> 000000e
>
> tcs can handle this text because N=10 is just uft boundary
> but tcs fails if 'a' are 6 or 8 ...
>
> tcs is very important for me.
> Who maintains tcs ?
> I might help debugging.
>
> Kenji Arisawa
>
>
next prev parent reply other threads:[~2005-08-31 5:57 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-08-29 23:23 [9fans] some Plan9 related ideas Bhanu Nagendra Pisupati
2005-08-30 12:27 ` Sape Mullender
2005-08-30 15:21 ` Francisco Ballesteros
2005-08-30 15:25 ` Francisco Ballesteros
2005-08-30 17:07 ` [9fans] " Dave Eckhardt
2005-08-30 17:33 ` Francisco Ballesteros
2005-08-30 17:46 ` Russ Cox
2005-08-31 5:54 ` [9fans] tcs bug arisawa
2005-08-31 5:57 ` Rob Pike [this message]
2005-10-17 7:14 ` [9fans] Re: some Plan9 related ideas Uriel
2005-10-17 11:23 ` Russ Cox
2005-10-17 12:45 ` Uriel
2005-10-17 13:03 ` Russ Cox
2005-10-17 13:22 ` Uriel
2005-10-17 15:14 ` Russ Cox
2005-08-31 6:07 [9fans] tcs bug arisawa
2005-08-31 9:11 ` arisawa
2005-08-31 9:17 ` Rob Pike
2005-08-31 10:48 ` arisawa
2005-08-31 11:22 ` arisawa
2005-08-31 10:51 quanstro
2005-08-31 21:36 ` Russ Cox
2005-09-01 0:36 quanstro
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