Re: [NTG-context] Bad PDF to text crawlers

[Peter Münster]

On Wed, Aug 19 2015, Kip Warner wrote:

> I was thinking that there must be some way of tricking these bots, 
> depending on how they are implemented, and let's assume they will always 
> find the PDF, to get them to extract only a small invisible layer that 
> just contains some hidden text directing a user to the location to 
> download the original high quality ConTeXt PDF.

Even if you would find a way today, tomorrow there would be other bots,
that see the same text, as the humans.


> Any suggestions?

Get the value of HTTP_USER_AGENT and send the replacement text, if the
agent is a bot. Or use robots.txt.

-- 
   Peter
___
If your question is of interest to others as well, please add an entry to the 
Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : http://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
___

[NTG-context] Bad PDF to text crawlers

[Kip Warner]

Hey list,

I have an important document online that I would prefer to keep as a PDF 
and not in another format. Unfortunately bots frequently try to provide 
those looking for it with a text version they try to extract (beyond my 
control). The extraction looks just absolutely awful and has been a 
major pain in leaving readers with a really bad understanding of the 
contents of the document.

I was thinking that there must be some way of tricking these bots, 
depending on how they are implemented, and let's assume they will always 
find the PDF, to get them to extract only a small invisible layer that 
just contains some hidden text directing a user to the location to 
download the original high quality ConTeXt PDF.

Any suggestions?

-- 
Kip Warner -- Senior Software Engineer
OpenPGP encrypted/signed mail preferred
http://www.thevertigo.com


signature.asc
Description: Digital signature
___
If your question is of interest to others as well, please add an entry to the 
Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : http://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
___

Re: [NTG-context] \startchemical

[Wolfgang Schuster]

Alan BRASLAU 
18. August 2015 20:01
On Tue, 18 Aug 2015 19:42:20 +0200

I did not realize that \startchemical took the name of an instance as
argument - I have only used it with key=value, i.e.:
\startchemical[...=...]

I suppose that it uses some "standard" mechanisms.

There are helper commands for the default \define and \setup macros
but the allowed arguments for \start... depend only on the way how
you write it.

\definechemical[benzene] is different. It gets used as:

\startchemical
\chemical[benzene,...]
\stopchemical


Perhaps there is some inconsistency with respect to ConTeXt syntax here.

There are other commands which redefine the generated \define-command
but normally it is saved before the redefintion and the problem here is that
you can’t pass a instance because it can’t be created.

Wolfgang
___
If your question is of interest to others as well, please add an entry to the 
Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : http://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
___