From parasew at 5uper.net  Mon Oct 15 03:30:27 2007
From: parasew at 5uper.net (Matthias Tarasiewicz)
Date: Mon, 15 Oct 2007 09:30:27 +0200
Subject: [Instiki] Instiki 0.12 released and website up again
Message-ID: <78ccd8360710150030r51c1debp74d1d0fecadc8a15@mail.gmail.com>

hi list,

we just released a new version of instiki - version 0.12 that is
mainly a bugfix release. We recommend all instiki Users to upgrade.
 In this version, some security holes where fixed
	- An XSS vulnerability in categories
	- An XSS vulnerability in <nowiki>
	- fixes that Instiki allows "dangerous" operations as HTTP GETs

 as well as some other small improvements.
	- fixes for instiki running on mongrel
	- fixes for instiki running on mongrel_cluster

 Jacques Distler's fixes are included as well.
 small bugs as well. A note to Mac OSX users: use the Ruby One-Click-Installer
 for OSX ( http://rubyosx.com ) or make sure you are not running into problems
 with sqlite (see http://instiki.5uper.net/instiki/show/SQLite+issues+on+OSX)

also, the website is up again, on a new host. We are planning on
creating a mirror for instiki.org so long downtimes cannot happen
again. If somebody can help with such a mirror, please reply.

There are still some issues in 0.12 that need to be checked and fixed,
so we are basically trying to get 0.13 out soon (any help welcome).
There is a known issue when running instiki only on mongrel. If you
experience a problem like "Superclass mismatch for class Cookie",
please create your wiki via Webrick, then you can switch to mongrel.
(we need to take a look at that)

For all the people that want to help out or still have instiki patches
to commit - please drop me a mail or directly send me the files!

regards,
matthias

--
matthias tarasiewicz
http://mutti.jp
http://parasew.com

From malefactorprophet at gmail.com  Tue Oct 16 20:05:44 2007
From: malefactorprophet at gmail.com (malefactorprophet at gmail.com)
Date: Tue, 16 Oct 2007 18:05:44 -0600
Subject: [Instiki] "Your edit was blocked by spam filtering"
Message-ID: <1192579544.13308.3.camel@Harbinger>

New to Instiki. I created an home page and some wiki words. When I went
to create the first page that was linked it give me the error in the
subject.

The page was all text and no special formatting. Does anyone have any
ideas?

Thanks for the help.


From parasew at 5uper.net  Tue Oct 23 05:00:57 2007
From: parasew at 5uper.net (Matthias Tarasiewicz)
Date: Tue, 23 Oct 2007 11:00:57 +0200
Subject: [Instiki] "Your edit was blocked by spam filtering"
In-Reply-To: <1192579544.13308.3.camel@Harbinger>
References: <1192579544.13308.3.camel@Harbinger>
Message-ID: <78ccd8360710230200t9746318w173f060cc8295145@mail.gmail.com>

please see the file config/spam_patterns.txt - that's where the
antispam-regexes are located. you can wipe this file empty, because
spam-catching should be solved now with the hivelogic javascript
enkoder. this file is still existing from earlier days, when instiki
had severe wiki spamming problems.

regards,
matthias

On 10/17/07, malefactorprophet at gmail.com <malefactorprophet at gmail.com> wrote:
> New to Instiki. I created an home page and some wiki words. When I went
> to create the first page that was linked it give me the error in the
> subject.
>
> The page was all text and no special formatting. Does anyone have any
> ideas?
>
> Thanks for the help.
>
> _______________________________________________
> Instiki-users mailing list
> Instiki-users at rubyforge.org
> http://rubyforge.org/mailman/listinfo/instiki-users
>

From charlie.caroff at gmail.com  Wed Oct 31 00:58:56 2007
From: charlie.caroff at gmail.com (Charlie Caroff)
Date: Tue, 30 Oct 2007 21:58:56 -0700
Subject: [Instiki] mongrel_rails and apache for instiki
Message-ID: <b103a4480710302158n696480d7i29cce727e094e2f4@mail.gmail.com>

Hello,

Does anyone have a tutorial on how to set up a mongrel_rails cluster with
apache for instiki?  I have mongrel rails and apache working for two other
ROR projects, but the setup for instiki is so far eluding me.


Charlie
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From Andy.Selvig at Goodrich.com  Wed Oct 31 08:09:42 2007
From: Andy.Selvig at Goodrich.com (Selvig, Andy)
Date: Wed, 31 Oct 2007 07:09:42 -0500
Subject: [Instiki] mongrel_rails and apache for instiki
In-Reply-To: <b103a4480710302158n696480d7i29cce727e094e2f4@mail.gmail.com>
References: <b103a4480710302158n696480d7i29cce727e094e2f4@mail.gmail.com>
Message-ID: <3F87CD0E4C05F14F82DE9F704A6F255B039715AA@msp0ex01.goodrich.root.local>

I don't know about doing a mongrel cluster, but running instiki on
mongrel should be exactly the same as running instiki on any rails app.
Apache shouldn't know the difference (assuming you're using apache for
reverse proxy or similar).
 

Andy Selvig 



________________________________

From: instiki-users-bounces at rubyforge.org
[mailto:instiki-users-bounces at rubyforge.org] On Behalf Of Charlie Caroff
Sent: Tuesday, October 30, 2007 11:59 PM
To: instiki-users at rubyforge.org
Subject: [Instiki] mongrel_rails and apache for instiki


Hello,

Does anyone have a tutorial on how to set up a mongrel_rails cluster
with apache for instiki?  I have mongrel rails and apache working for
two other ROR projects, but the setup for instiki is so far eluding me.


Charlie 
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From jbonnet at ptinovacao.pt  Wed Oct 31 08:34:36 2007
From: jbonnet at ptinovacao.pt (=?ISO-8859-1?Q?Jos=E9_Bonnet?=)
Date: Wed, 31 Oct 2007 12:34:36 +0000
Subject: [Instiki] performance
Message-ID: <A8EBA61B-6B07-440F-8423-D450E98C6215@ptinovacao.pt>

Hi!
I've been using the wonderful Instiki for two years now, but I'm  
facing performance problems (rampant rendering times).

Any help?

jb

From charlie.caroff at gmail.com  Wed Oct 31 12:21:02 2007
From: charlie.caroff at gmail.com (Charlie Caroff)
Date: Wed, 31 Oct 2007 09:21:02 -0700
Subject: [Instiki] mongrel_rails and apache for instiki
In-Reply-To: <3F87CD0E4C05F14F82DE9F704A6F255B039715AA@msp0ex01.goodrich.root.local>
References: <b103a4480710302158n696480d7i29cce727e094e2f4@mail.gmail.com>
	<3F87CD0E4C05F14F82DE9F704A6F255B039715AA@msp0ex01.goodrich.root.local>
Message-ID: <b103a4480710310921y54747b89n55cfe4b0968fffe1@mail.gmail.com>

Well, I tried to use apache as explained on the instiki.org site.  I put
something like this into a name virtual host container in my apache
2.2./extra/httpd-
vhosts.conf file:

    ServerName wiki.mydomain.com
    ProxyRequests Off
    ProxyPass / http://127.0.0.1:2500/
    ProxyPassReverse / http://127.0.0.1:2500/
    <Proxy http://127.0.0.1:2500/*>
        Order deny,allow
        Allow from all
    </Proxy>

And it works, sort of.  Every time instiki wants to do a redirect, it wants
to redirect to https, and it fails, because a different host is set up using
https.  But, when I take the "s" out of http, and reload the page -- all the
pages work.

I have ssl set up for one of my rails projects on this machine, but not for
this one. I have another project set up without ssl on that same machine,
and that project works just fine.

The two working projects -- one ssl, one not -- are both running on
mongrel_rails and apache, which I like. So I decided to set my instiki
project up with the same config.

Trouble is -- I don't understand what the setup for instiki would be doing.
I guess I probably need to set up a Virtual Host container inside my
httpd-vhosts.conf file, with the mongrel config, and the reverse proxy
config.  But when I try to do that, I get the same problem as without the
mongrel config -- every request tries to go through https.

Is the problem that this reverse proxy config will simply not work on a
machine that is running ssl for a different domain?

Charlie



On 10/31/07, Selvig, Andy <Andy.Selvig at goodrich.com> wrote:
>
>  I don't know about doing a mongrel cluster, but running instiki on
> mongrel should be exactly the same as running instiki on any rails app.
> Apache shouldn't know the difference (assuming you're using apache for
> reverse proxy or similar).
>
>
> Andy Selvig
>
>  ------------------------------
> *From:* instiki-users-bounces at rubyforge.org [mailto:
> instiki-users-bounces at rubyforge.org] *On Behalf Of *Charlie Caroff
> *Sent:* Tuesday, October 30, 2007 11:59 PM
> *To:* instiki-users at rubyforge.org
> *Subject:* [Instiki] mongrel_rails and apache for instiki
>
> Hello,
>
> Does anyone have a tutorial on how to set up a mongrel_rails cluster with
> apache for instiki?  I have mongrel rails and apache working for two other
> ROR projects, but the setup for instiki is so far eluding me.
>
>
> Charlie
>
> _______________________________________________
> Instiki-users mailing list
> Instiki-users at rubyforge.org
> http://rubyforge.org/mailman/listinfo/instiki-users
>
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From Andy.Selvig at goodrich.com  Wed Oct 31 12:41:46 2007
From: Andy.Selvig at goodrich.com (Selvig, Andy)
Date: Wed, 31 Oct 2007 11:41:46 -0500
Subject: [Instiki] mongrel_rails and apache for instiki
In-Reply-To: <b103a4480710310921y54747b89n55cfe4b0968fffe1@mail.gmail.com>
References: <b103a4480710302158n696480d7i29cce727e094e2f4@mail.gmail.com><3F87CD0E4C05F14F82DE9F704A6F255B039715AA@msp0ex01.goodrich.root.local>
	<b103a4480710310921y54747b89n55cfe4b0968fffe1@mail.gmail.com>
Message-ID: <3F87CD0E4C05F14F82DE9F704A6F255B03971908@msp0ex01.goodrich.root.local>

Not sure about SSL. I have a machine with 3 rails apps, all on mongrel,
behind an apache reverse proxy. I'm not using virtual hosts, though.
Here's my (Windows) setup, if it helps:
 
In the apache conf file, each rails app (including instiki) gets
something like this:
 

## wiki
Alias /wiki "C:\wiki\instiki\public"  
<Directory "C:\wiki\instiki\public"> 
 Options Indexes FollowSymLinks 
 AllowOverride none 
 Order allow,deny 
 Allow from all 
</Directory> 
 
ProxyPass /wiki/images ! 
ProxyPass /wiki/stylesheets ! 
ProxyPass /wiki/javascripts ! 

ProxyPass /wiki/ http://127.0.0.1:2500/wiki/
ProxyPassReverse /wiki/ http://127.0.0.1:2500/wiki/
 
# reverse proxy link mapping
ProxyHTMLURLMap http://127.0.0.1:2500/ /wiki
<Location /wiki/>
 #ProxyPassReverse /
 SetOutputFilter  proxy-html
 ProxyHTMLURLMap / /wiki/
 ProxyHTMLURLMap /wiki /wiki
 RequestHeader    unset  Accept-Encoding
</Location>
 
 
Each app has a different port, name, and directory. To run mongrel for
the above example:
 
> mongrel_rails start --prefix=/wiki -p 2500 -e production
 
 
The prefix option for mongrel and the fact that the
ProxyPass/ProxyPassReverse directives are a bit different than
recommended is to make rails redirects work properly. I could never get
it to work right the way you had it set up.
 
Hope this helps.
 

Andy Selvig 



________________________________

From: instiki-users-bounces at rubyforge.org
[mailto:instiki-users-bounces at rubyforge.org] On Behalf Of Charlie Caroff
Sent: Wednesday, October 31, 2007 11:21 AM
To: Instiki-users
Subject: Re: [Instiki] mongrel_rails and apache for instiki


Well, I tried to use apache as explained on the instiki.org site.  I put
something like this into a name virtual host container in my apache 2.2
./extra/httpd-vhosts.conf file:

    ServerName 
wiki.mydomain.com
    ProxyRequests Off
    ProxyPass / http://127.0.0.1:2500/
    ProxyPassReverse / http://127.0.0.1:2500/

    <Proxy http://127.0.0.1:2500/*>
        Order deny,allow
        Allow from all
    </Proxy>
And it works, sort of.  Every time instiki wants to do a redirect, it
wants to redirect to https, and it fails, because a different host is
set up using https.  But, when I take the "s" out of http, and reload
the page -- all the pages work. 

I have ssl set up for one of my rails projects on this machine, but not
for this one. I have another project set up without ssl on that same
machine, and that project works just fine.

The two working projects -- one ssl, one not -- are both running on
mongrel_rails and apache, which I like. So I decided to set my instiki
project up with the same config. 

Trouble is -- I don't understand what the setup for instiki would be
doing.  I guess I probably need to set up a Virtual Host container
inside my httpd-vhosts.conf file, with the mongrel config, and the
reverse proxy config.  But when I try to do that, I get the same problem
as without the mongrel config -- every request tries to go through
https. 

Is the problem that this reverse proxy config will simply not work on a
machine that is running ssl for a different domain?

Charlie




On 10/31/07, Selvig, Andy <Andy.Selvig at goodrich.com> wrote: 

	I don't know about doing a mongrel cluster, but running instiki
on mongrel should be exactly the same as running instiki on any rails
app. Apache shouldn't know the difference (assuming you're using apache
for reverse proxy or similar).
	 

	Andy Selvig 
	


________________________________

	From: instiki-users-bounces at rubyforge.org
[mailto:instiki-users-bounces at rubyforge.org] On Behalf Of Charlie Caroff
	Sent: Tuesday, October 30, 2007 11:59 PM
	To: instiki-users at rubyforge.org
	Subject: [Instiki] mongrel_rails and apache for instiki
	
	
	
	Hello,
	
	Does anyone have a tutorial on how to set up a mongrel_rails
cluster with apache for instiki?  I have mongrel rails and apache
working for two other ROR projects, but the setup for instiki is so far
eluding me.
	
	
	Charlie 

	_______________________________________________
	Instiki-users mailing list
	Instiki-users at rubyforge.org
	http://rubyforge.org/mailman/listinfo/instiki-users
	


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From charlie.caroff at gmail.com  Wed Oct 31 14:37:52 2007
From: charlie.caroff at gmail.com (Charlie Caroff)
Date: Wed, 31 Oct 2007 11:37:52 -0700
Subject: [Instiki] mongrel_rails and apache for instiki
In-Reply-To: <3F87CD0E4C05F14F82DE9F704A6F255B03971908@msp0ex01.goodrich.root.local>
References: <b103a4480710302158n696480d7i29cce727e094e2f4@mail.gmail.com>
	<3F87CD0E4C05F14F82DE9F704A6F255B039715AA@msp0ex01.goodrich.root.local>
	<b103a4480710310921y54747b89n55cfe4b0968fffe1@mail.gmail.com>
	<3F87CD0E4C05F14F82DE9F704A6F255B03971908@msp0ex01.goodrich.root.local>
Message-ID: <b103a4480710311137n3406d421n9f2180eecac779bb@mail.gmail.com>

Ok, I figured out the problem. I have a line in my httpd.conf

RequestHeader set X-Forwarded-Proto "https"

I set that to

RequestHeader set X-Forwarded-Proto "http"

in my VirtualHost for my instiki and all became hunky dory.  I got the
clue from your RequestHeader    unset   Accept-Encoding line.

Also, I do have some minor redirecting issues --  I'm going to tackle
those now with your hints.  Thanks,

Charlie

On 10/31/07, Selvig, Andy <Andy.Selvig at goodrich.com> wrote:
>
>
> Not sure about SSL. I have a machine with 3 rails apps,  all on mongrel, behind an apache reverse proxy. I'm not using virtual hosts,  though. Here's my (Windows) setup, if it helps:
>
> In the apache conf file, each rails app (including  instiki) gets something like this:
>
>
> ## wiki
> Alias /wiki "C:\wiki\instiki\public"
> <Directory "C:\wiki\instiki\public">
>  Options Indexes  FollowSymLinks
>  AllowOverride none
>  Order allow,deny
>  Allow from all
> </Directory>
>
> ProxyPass /wiki/images !
> ProxyPass /wiki/stylesheets  !
> ProxyPass /wiki/javascripts !
>
> ProxyPass /wiki/ http://127.0.0.1:2500/wiki/
> ProxyPassReverse  /wiki/ http://127.0.0.1:2500/wiki/
>
> # reverse proxy link mapping
> ProxyHTMLURLMap http://127.0.0.1:2500/ /wiki
> <Location  /wiki/>
>  #ProxyPassReverse /
>  SetOutputFilter   proxy-html
>  ProxyHTMLURLMap / /wiki/
>  ProxyHTMLURLMap /wiki  /wiki
>  RequestHeader    unset   Accept-Encoding
> </Location>
>
>
> Each  app has a different port, name, and directory. To run mongrel for the above  example:
>
> >  mongrel_rails start --prefix=/wiki -p 2500 -e production
>
>
> The  prefix option for mongrel and the fact that the ProxyPass/ProxyPassReverse  directives are a bit different than recommended is to make rails redirects work  properly. I could never get it to work right the way you had it set  up.
>
> Hope  this helps.
>
>
> Andy Selvig
>
>
>  ________________________________
 From: instiki-users-bounces at rubyforge.org
[mailto:instiki-users-bounces at rubyforge.org] On Behalf Of Charlie
Caroff
> Sent: Wednesday, October 31, 2007 11:21 AM
> To:  Instiki-users
> Subject: Re: [Instiki] mongrel_rails and apache for  instiki
>
>
>
> Well, I tried to use apache as explained on the instiki.org site.  I put something like this  into a name virtual host container in my apache 2.2 ./extra/httpd-vhosts.conf  file:
>     ServerName
> wiki.mydomain.com
>     ProxyRequests Off
>     ProxyPass / http://127.0.0.1:2500/
>     ProxyPassReverse / http://127.0.0.1:2500/
>
>     <Proxy http://127.0.0.1:2500/*>
>         Order deny,allow
>         Allow from all
>     </Proxy>
> And  it works, sort of.  Every time instiki wants to do a redirect, it wants to  redirect to https, and it fails, because a different host is set up using  https.  But, when I take the "s" out of http, and reload the page -- all  the pages work.
>
> I have ssl set up for one of my rails projects on this  machine, but not for this one. I have another project set up without ssl on that  same machine, and that project works just fine.
>
> The two working projects  -- one ssl, one not -- are both running on mongrel_rails and apache, which I  like. So I decided to set my instiki project up with the same config.
>
> Trouble is -- I don't understand what the setup for instiki would be  doing.  I guess I probably need to set up a Virtual Host container inside  my httpd-vhosts.conf file, with the mongrel config, and the reverse proxy  config.  But when I try to do that, I get the same problem as without the  mongrel config -- every request tries to go through https.
>
> Is the  problem that this reverse proxy config will simply not work on a machine that is  running ssl for a different domain?
>
> Charlie
>
>
>
>
> On 10/31/07, Selvig,  Andy <Andy.Selvig at goodrich.com>  wrote:
> >
> >
> > I don't    know about doing a mongrel cluster, but running instiki on mongrel should be    exactly the same as running instiki on any rails app. Apache shouldn't know    the difference (assuming you're using apache for reverse proxy or    similar).
> >
> >
> > Andy Selvig
> >
> >
> >    ________________________________
   From: instiki-users-bounces at rubyforge.org
[mailto:instiki-users-bounces at rubyforge.org] On Behalf Of    Charlie
Caroff
> > Sent: Tuesday, October 30, 2007 11:59    PM
> > To: instiki-users at rubyforge.org
> > Subject: [Instiki]    mongrel_rails and apache for instiki
> >
> >
> > Hello,
> >
> > Does anyone have a tutorial on how to set up a    mongrel_rails cluster with apache for instiki?  I have mongrel rails and    apache working for two other ROR projects, but the setup for instiki is so far    eluding me.
> >
> >
> > Charlie
> > _______________________________________________
> > Instiki-users    mailing list
> > Instiki-users at rubyforge.org
> > http://rubyforge.org/mailman/listinfo/instiki-users
> >
>
>
> _______________________________________________
> Instiki-users mailing list
> Instiki-users at rubyforge.org
> http://rubyforge.org/mailman/listinfo/instiki-users
>

From parasew at 5uper.net  Wed Oct 31 16:17:10 2007
From: parasew at 5uper.net (Matthias Tarasiewicz)
Date: Wed, 31 Oct 2007 21:17:10 +0100
Subject: [Instiki] mongrel_rails and apache for instiki
In-Reply-To: <b103a4480710302158n696480d7i29cce727e094e2f4@mail.gmail.com>
References: <b103a4480710302158n696480d7i29cce727e094e2f4@mail.gmail.com>
Message-ID: <78ccd8360710311317i4b6d6aa4s5be3db7cbf274106@mail.gmail.com>

hello charlie,

here is the setup we use for instiki on our servers using mongrel_cluster

---
user: mongrel
cwd: /var/www/sites/instiki.org/instiki
log_file: log/mongrel.log
port: "12000"
environment: production
group: mongrel
address: instiki.5uper.net
pid_file: tmp/pids/mongrel.pid
servers: 1

should be quite self-explaining. you might want to use
mod_proxy_balancer (if you are on apache2) see
http://blog.innerewut.de/2006/04/21/scaling-rails-with-apache-2-2-mod_proxy_balancer-and-mongrel

for a better performance, you might want to try nginx
(http://nginx.net/) which is said to have a better performance than
apache2 and should compile on most systems without any problems (no
dependencies). we are planning to move the main instiki site to nginx
soon.

regards,
matthias



On 10/31/07, Charlie Caroff <charlie.caroff at gmail.com> wrote:
> Hello,
>
>  Does anyone have a tutorial on how to set up a mongrel_rails cluster with
> apache for instiki?  I have mongrel rails and apache working for two other
> ROR projects, but the setup for instiki is so far eluding me.
>
>
>  Charlie
> _______________________________________________
> Instiki-users mailing list
> Instiki-users at rubyforge.org
> http://rubyforge.org/mailman/listinfo/instiki-users
>

From parasew at 5uper.net  Wed Oct 31 16:22:35 2007
From: parasew at 5uper.net (Matthias Tarasiewicz)
Date: Wed, 31 Oct 2007 21:22:35 +0100
Subject: [Instiki] performance
In-Reply-To: <A8EBA61B-6B07-440F-8423-D450E98C6215@ptinovacao.pt>
References: <A8EBA61B-6B07-440F-8423-D450E98C6215@ptinovacao.pt>
Message-ID: <78ccd8360710311322k8f94528y5e6c74454e7aaf4e@mail.gmail.com>

jose,
can you tell us on which system you are running instiki? are you using
apache2 with mongel or webrick?

for a good performing solution you might want to
* switch to the latest instiki 0.12 version
* run a load balancer (nginx with mongrel seems to be the fastest solution)

see
http://wiki.codemongers.com/NginxRubyonRailsMongrel
http://brainspl.at/articles/2006/08/23/nginx-my-new-favorite-front-end-for-mongrel-cluster

-matthias

On 10/31/07, Jos? Bonnet <jbonnet at ptinovacao.pt> wrote:
> Hi!
> I've been using the wonderful Instiki for two years now, but I'm
> facing performance problems (rampant rendering times).
>
> Any help?
>
> jb
> _______________________________________________
> Instiki-users mailing list
> Instiki-users at rubyforge.org
> http://rubyforge.org/mailman/listinfo/instiki-users
>

From charlie.caroff at gmail.com  Wed Oct 31 19:16:59 2007
From: charlie.caroff at gmail.com (Charlie Caroff)
Date: Wed, 31 Oct 2007 16:16:59 -0700
Subject: [Instiki] sanitize.rb error
Message-ID: <b103a4480710311616x4856eb63m39480f67357234f1@mail.gmail.com>

Hi, I set up instiki, I can fill in the values on the initial setup
page.  Then when I hit "save", I get a page that says "you are being
redirected", but I'm not redirected - I have to click the link.

Then, I am at the "Creating Home Page" page, and when I enter some
text into that page, and click "submit", I get this error in my
browser . . .

Internal Error

An application error occurred while processing your request.

. . . and this error in my production.log:

SyntaxError (/usr/home/charlie/instiki/lib/sanitize.rb:227: too short
multibyte code string: /^(
         [\x09\x0A\x0D\x20-\x7E]            # ASCII
       | [\xC2-\xDF][\x80-\xBF]             # non-overlong 2-byte
       |  \xE0[\xA0-\xBF][\x80-\xBF]        # excluding overlongs
       | [\xE1-\xEC\xEE\xEF][\x80-\xBF]{2}  # straight 3-byte
       |  \xED[\x80-\x9F][\x80-\xBF]        # excluding surrogates
       |  \xF0[\x90-\xBF][\x80-\xBF]{2}     # planes 1-3
       | [\xF1-\xF3][\x80-\xBF]{3}          # planes 4-15
       |  \xF4[\x80-\x8F][\x80-\xBF]{2}     # plane 16
     )*$/):


Anyone seen this one before?

Charlie