Re: [NTG-context] Multi-page textbackground ignores topoffset

2013-01-30 Thread Andre Caldas
Nicholas,

 Is there any way to get a multi-page textbackground to respect
 topoffset on each page? From the second page onwards,
 it leaves no offset at the top.

I have the same problem. A small-not-so-good-hack would be to define a
tiny backgroundoffset as well. This messes the layout a little... but
you might think it is better then having no offset at all...


André Caldas.
___
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] Node for startbuffer.

2013-01-29 Thread Andre Caldas
 It's somewhat experimental. Up to you to update the wiki.

Anyone can suggest a category for it?
http://wiki.contextgarden.net/Category:Commands

Nodes?


André Caldas.
___
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] Node for startbuffer.

2013-01-12 Thread Andre Caldas
 I've added the markers code to the beta so that we have an
 abstract way to deal with such matters.
 [...]
 Node lists are processed \hbox \boxmarker{mymarker}{1} {nested from
 [...]

Does it have to be an hbox?



 It's somewhat experimental. Up to you to update the wiki.

I've never updated the wiki... I am a bit scared... but I will... :-)


 I've added the example to the cld manual.

How can I see it?


André Caldas.
___
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] Node for startbuffer.

2013-01-10 Thread Andre Caldas
 How do I identify a specific node? Like...
 [...]

 Here is a start. I've added the markers code to the beta so that we
 have an abstract way to deal with such matters.
 [...]
 \hbox \boxmarker{mymarker}{2}

Can't the mark be a string?


André Caldas.
___
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] Metapost nodes.

2013-01-10 Thread Andre Caldas
Hello!

1. How does a metapost figure (\startMPcode) becomes a node?
2. When does it become a node?
3. What type of node it becomes?
4. Can I change its attributes?
5. Can I change its colors or transparency levels?


André Caldas.
___
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] Node for startbuffer.

2013-01-09 Thread Andre Caldas
Hello!

Given some

\startbuffer
  Blah, blah, blah...
\stopbuffer

I'd like to get a node tree corresponding to how the buffer would be
processed at a given point. Using luatex, I'd like to identify certain
sub-nodes and change their attributes (to be specific: transparency).

Any hint on how to do it?

Also, are there any good examples on how to use nodes?


André Caldas.
___
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] Node for startbuffer.

2013-01-09 Thread Andre Caldas
 here's an example (I'll add it to the cld manual):

Wow!!! Thank you for your time, Hans!

I will study your sample... :-)


Cheers,
André Caldas.
___
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] Node for startbuffer.

2013-01-09 Thread Andre Caldas
Another question...

 function userdata.processmystuff(head)

Shall I use this?
userdata = userdata or {}


 \startbuffer
 whatever \hbox{you} want
 \stopbuffer

How do I identify a specific node? Like...

\startbuffer
  Will this be
  \boxtobechanged{transparent?}
\stopbuffer


André Caldas.
___
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] Installing beta.

2013-01-09 Thread Andre Caldas
What is the correct way to install the beta version of context?


André Caldas.
___
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] Multi-page frame.

2012-12-22 Thread Andre Caldas
Hello!

How can I have a framed text that can cross page boundaries?


Cheers,
André Caldas.
___
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] Numerical Calculations

2012-12-21 Thread Andre Caldas
 Here's the animated (video) version.

 http://www.youtube.com/watch?v=2_OZ-yKMd7g

How did you produce a video out of the PDF?
___
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] Balanced parenthesis.

2012-12-19 Thread Andre Caldas
Instead of writing
$\left( x+y \right)$,
I'd like to simply write
$(x + y)$.
For unmatched parenthesis, I would like to write
$:-\unmatched)$.

How can I accomplish that in context?


Cheeers,
André Caldas.
___
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] Module for Commutative Diagrams.

2012-12-18 Thread Andre Caldas
Hello!

Some days ago, I have written a module for writing commutative
diagrams using MetaPost.
Definition of commutative diagrams:
https://duckduckgo.com/?q=commutative+diagrams

The module lives here, now:
https://bitbucket.org/andrecaldas/context-commutativediagrams

The module still needs a lot of working... but for very, very simple
diagrams, it works! At least for me... =o)


Comments are very welcome,
André Caldas.
PS: I have to submit the final version of my doctoral thesis just
before the end of the world (20/12/2012). For that reason I have not
worked on the simplesteps module... but I'd like to thank all the
support given in my last thread.
___
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] Transparency without colors.

2012-12-18 Thread Andre Caldas
 How can I define the transparency of some text?

 http://wiki.contextgarden.net/Color

I want to set up the transparency without messing with the colors
(that were setup by the user).


André Caldas.
___
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] New module: simplesteps.

2012-12-15 Thread Andre Caldas
 %% begin example
 \grabbufferdata[mybuffer][thisisthestart][thisistheend]
 \thisisthestart
 My friend, you would not tell with such high zest
 To children ardent for some desparate glory,
 The old Lie: Dulce et decorum est
 Pro patria mori.
 \thisistheend

 \typebuffer[mybuffer]
 %% end example

 What am I doing wrong? And is the description I put on the wiki correct?

It's just a guess... but I think the \grabbufferdata has to be invoked
*after* the \thisisthestart, \thisistheend pair.


André Caldas.
___
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] Regular expressions in Lua.

2012-12-15 Thread Andre Caldas
Hi!

 As ranges are sometimes handy I've added a parser to the core

Nice. I will use it as soon as it is available.
It is a very good thing that range specifications will be uniform
across different modules.


André Caldas.
___
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] New module: simplesteps.

2012-12-14 Thread Andre Caldas
Hello!

 thanks for the interesting contribution! Have a look at the patch
 I hopefully don’t forget to append.

Thank you! I will take a look and learn... ;-)


 [...]
 I use \startbuffer and \stopbuffer, and also Lua. As I said, I don't
 really know how to write a module... comments are very welcome.

 Honestly, it doesn’t work, but that’s a minor flaw!

Sorry! I forgot to mention. Only a little subset of it works. I have
(already - so I don't forget to) attached a tex file that works.


 [**lots of advices I will study carefully latter**]
 [...]
 I could not figure out how exactly the section block thingy is
 supposed to work. It does not create the \startframe macro at all
 -- is this something custom?

I don't know how to use this startframe yet. So, I am doing like
this right now: (numbers like 2-3 or 2- don't work yet)

=== START code snip ===
\startbuffer[simplesteps]
  \startitemize
\item First item
\uncover[2,3,4]{\item Second item}
\uncover[3,4]{\item Second item}
\uncover[4]{\item Second item}
  \stopitemize
\stopbuffer
\simplestepsplaybuffer
=== STOP code snip ===

The simplestepsplaybuffer macro simply calls the
simplesteps.playbuffer() lua function. This function plays the buffer
and determines if it has to be played again or not. If it does, then
it tex.print('\simplestepsplaybuffer').

The macros uncover determine how far the specification is from being
played. If it is being played now, then show. If it is played next,
then show in gray. And so on.


 I infer it’s about the slide title
 so I have \startframe call \section but that should be taken as a
 placeholder at most. In my own slide module I use
 \{start,stop}section with the option placehead=no and rely on the
 page header to display the slide title (i.e. current section
 running head). That was the laziest way I could imagine :P

I guess that's what I want to do. I just don't have the necessary
knowledge yet. ;-)


 Some remarks:

   - you should rename simplesteps.mkiv to t-simplesteps.mkiv,
 indicating that it is a thirdparty module

I will. I think I will have a bitbucket repository exclusively for
modules. Then I will have the proper directory structure, the proper
naming scheme and hopefully proper documentation, xml, etc. (lots of
things to learn!)


   - if you plan on expanding the code you eventually will come to
 love this bit: http://wiki.contextgarden.net/System_Macros
   - Context has a namespacing system which you might consider
 switching to in the long term:
   http://tex.stackexchange.com/q/58654
 but it’s arguably an advanced method

Well, I do want to do it the right (recommended) way!


   - maybe switch to mkvi as named parameters make rewriting
 macros a breeze

Would you elaborate a bit further?


 Is it ok if I send a PDF sample to the list?

I hope you can use the TEX file attached.


Cheers,
André Caldas.


simpletest.tex
Description: TeX document
___
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] New module: simplesteps.

2012-12-14 Thread Andre Caldas
  - maybe switch to mkvi as named parameters make rewriting
macros a breeze

 Would you elaborate a bit further?

 You can use for the parameter in your macros names instead of number,
 as you can see below the first definition uses “#1” for the argument while
 the second uses “#text”.

 You can force MkIV mode when you add “% macros=mkvi” at the top
 of the file. When your code is a external file (e.g. a module) you can
 give it “mkvi” as file extension (instead of the normal “tex” or “mkiv”)
 and don’t need this line anymore.

I had tried named parameters and I didn't know why it was not
working... now I know! :-)

I have one question:
- What does it happen when there is a quotation mark () inside the
parameter? Do I need to escape the contents passed to the macro?


André Caldas.
___
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] New module: simplesteps.

2012-12-14 Thread Andre Caldas
 I have one question:
 - What does it happen when there is a quotation mark () inside the
 parameter? Do I need to escape the contents passed to the macro?


 No you don’t have to but you could have checked yourself :)

Sorry... I didn't try it when I asked, but I had the impression I did
try it before. In my case, if I use
\uncover[2,3]{}
I get the error: =P
! LuaTeX error main ctx instance:1: ')' expected near '3'.

system   tex  error on line 6 in file
virtual://buffer.simplesteps.5: LuaTeX error  ...

empty file


\uncover ...t('\\simplestepscoveredveryfar') end }

l.6 \uncover[2,3]
  {\item The {\em second main message} of your talk in o...
?


Cheers,
André Caldas.
___
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] New module: simplesteps.

2012-12-14 Thread Andre Caldas
 \unexpanded\def\uncover[#1]%
   {\ctxlua{
  distance = simplesteps.distance_to_step(\!!bs#1\!!es)
  ...
   }}

 it works because the  is now only part of the string.

Thanks. That's what I needed. I guess
bs = begin string
es = end string.


Cheers,
André Caldas.
___
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] New module: simplesteps.

2012-12-14 Thread Andre Caldas
 These expand to Lua long strings, [===[ and ]===] respectively,
 without checking, so theoretically the same issue will arise iff
 your string contains ]===]. I consider the likelihood for this to
 happen to be too low to bother, but if you want to be absolutely
 on the safe side you can also use \luaescapestring. See the
 Luatex manual, section 2.3.6.

The luaescapestring will also escape the quotation marks... :-)

I will use it, then.
I used to develop WEB systems. Very vulnerable to injection attacks. I
really like things properly escaped...


Cheers,
André Caldas.
___
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] New module: simplesteps.

2012-12-14 Thread Andre Caldas
Hello, OK!

 You were so quick to write your module…
 Thanks for sharing,

:-)


 but I could not typeset the example file you sent:
 I didn't get whether your file simplesteps.mkiv should be renamed

I did this on my machine:
1. Copy simplesteps.{lua,mkiv} to
texmf-local/tex/context/third/simplesteps/
In my case, it is here:
/home/andre/context_standalone/tex/texmf-local/tex/context/third/simplesteps

2. Clear the cache.
I don't really know the proper way to do that. So, I just removed the
directory texmf-cache. In my case:
rm /home/andre/context_standalone/tex/texmf-cache/ -rf

3. Compile:
context simpletest.tex


 Maybe after you apply the changes suggested
 by Wolfgang and Philip you are going to repost your moudle?

The module will be here:
https://bitbucket.org/andrecaldas/context-simplesteps

Hopefully, one day, here... ;-)
http://modules.contextgarden.net/
I will let you know.


Cheers,
André Caldas.
___
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] New module: simplesteps.

2012-12-14 Thread Andre Caldas
 thanks for the interesting contribution! Have a look at the patch
 I hopefully don’t forget to append.

I didn't quite understood how this works:
\unexpanded\def\startframe{\dosingleempty\frame_start}

\def\frame_start[#1]{%
  \iffirstargument
\section{#1}%% solution needed here!
  \fi
  \begingroup
  \grabbufferdata[simplesteps][startframe][stopframe]%
}

\let\stopframe\simplestepsplaybuffer


Cheers,
André Caldas.
___
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] Regular expressions in Lua.

2012-12-14 Thread Andre Caldas
Hi!

I have to use pattern matching in lua. I tried the function string.gmatch.
I want to match (iterate over) strings of the type
([0-9]+)(-([0-9]*))?(,|$)

For example:
1,3- (iterations: 1 and 3-)
1-3,6,7 (iterations: 1-3 then 6 then 7)
1-2,5-6,10- (iterations 1-2 then 5-6 then 10-)


André Caldas.
___
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] Regular expressions in Lua.

2012-12-14 Thread Andre Caldas
Hello, Hans!

I had just managed to do it. I will switch to yours instead of mine...
I don't have any experience in Lua. Sorry for bothering with such easy
requests...

By the way, simplesteps recognizes number ranges! :-)
https://bitbucket.org/andrecaldas/context-simplesteps/src/1c7ced45208b78289590008760daa3bac05ec503/mod/tex/context/third/simplesteps/simplesteps.lua?at=default#cl-37


Thank you,
André Caldas.
___
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] [IN TOPIC] new interview

2012-12-13 Thread Andre Caldas
 http://www.tug.org/interviews/voipio.html
 http://www.lucet.fi/craftex

Nice!
___
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] Loading lua file.

2012-12-13 Thread Andre Caldas
Hello, Philipp!

 If I load a lua file from a module using
 \registerctxluafile{file}{1.001}
 or
 \ctxloadluafile{file}
 How can I be sure the file was in fact loaded?

 The related tracker output is quite comprehensive:

 \enabletrackers[resolvers.locating]
 \ctxloadluafile{sometest}

Nice! Thank you.
In my case, it was not being loaded because I had syntax errors in the
lua file. The file was found, but not loaded. I guess it is a very
good reason to halt!


Cheers,
André Caldas.
___
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] New module: simplesteps.

2012-12-13 Thread Andre Caldas
Well since Raw Steps did not work with mkiv, I tried making a very
very simple module for a beamer-like behaviour.

I don't really know how to write a module... but here is what I did:
https://bitbucket.org/andrecaldas/math-video-classes/src/9116599821fc246cb54d3e6d7b8e6304649eaffb/lib?at=default

I use \startbuffer and \stopbuffer, and also Lua. As I said, I don't
really know how to write a module... comments are very welcome.

Is it ok if I send a PDF sample to the list?


Cheers,
André Caldas.
___
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] Raw Steps.

2012-12-12 Thread Andre Caldas
Is there any working alternative to Raw Steps?

I need an alternative without JavaScript because the slides PDF will
become JPG and then OGV/MPG/MP8...
The idea is to record a lecture on video and then play it back with
the slides alongside.

https://bitbucket.org/andrecaldas/math-video-classes


Cheers,
André Caldas.
___
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] OOP in Metafun.

2012-12-10 Thread Andre Caldas
 But I would like to use some object oriented like approach.
 [...]
 How do I do that in METAFUN/METAPOST?

 You may want to take a look at my attempt:

 http://users.dimi.uniud.it/~nicola.vitacolonna/home/content/metappeal

Looks nice! I didn't find any license explaining the licensing terms.


André Caldas.
___
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] OOP in Metafun.

2012-12-09 Thread Andre Caldas
Hello, list!

I am writing down a macro package for commutative diagrams using metafun.
This is my first try:
https://bitbucket.org/andrecaldas/math-video-classes/src/9a050eab20348c9a9c9e50740618173648979f45/src/environments/diagrams.tex?at=default

Used here:
https://bitbucket.org/andrecaldas/math-video-classes/src/9a050eab2034/src/products/assorted/open_mapping_theorem/notes/introduction.tex?at=default#cl-106

But I would like to use some object oriented like approach. That is,
I'd like the diagram data structure to be set up like this:

d = CD.new;
d.vertex($X$); d.arrow($f$); d.vertex($Y$);
d.newline;
d.arrow($\pi$); d.arrow($\pi$);
d.vertex($A$); d.arrow($g$); d.vertex($B$);

or even in some thelabel similar fashion,

d = CD.new;
CD.vertex(d, $X$); CD.arrow(d, $f$); CD.vertex(d, $Y$);
CD.newline(d);
CD.arrow(d, $\pi$); CD.arrow(d, $\pi$);
CD.vertex(d, $A$); CD.arrow(d, $g$); CD.vertex(d, $B$);


How do I do that in METAFUN/METAPOST?


Cheers,
André Caldas.
___
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] OOP in Metafun.

2012-12-09 Thread Andre Caldas
 But I would like to use some object oriented like approach.

I have done some OOP like coding...
https://bitbucket.org/andrecaldas/math-video-classes/src/77036fe1001ede35e301305700943ac952089d32/src/environments/diagrams.tex?at=default

This is my first METAFUN experience. Comments are very welcome!


André Caldas.
___
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] toppath

2012-11-29 Thread Andre Caldas
Hello!

 Is 'toppath:' prefix working?

I use it only with \component, \environment, \product, \project. It
works even if I do like this:

$ mkdir build
$ cd build
$ context ../src/products/assorted.tex


 context.exe Test\t-TopPath.mkiv
 In this situation compilation fails.
 How to make it work?

It seems your observations in an e-mail below are right. Prefixes do
not seem to work with \input. I don't know if prefixes are supposed to
work or not with \input... but this issue is not related to toppath.


Cheers,
André Caldas.
___
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] toppath

2012-11-29 Thread Andre Caldas
Hello!

 My case is more complicated - a file is included from more other files in
 various directory levels.

I do this with \component:
https://bitbucket.org/andrecaldas/math-video-classes/src/92a8e5b1a6eee07ed3475e20b54b0a566ab57738/src/products/assorted.tex?at=default


André Caldas.
___
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] RFC: path relative to current file.

2012-11-08 Thread Andre Caldas
Hello, Hans!

I quoted this from your message:

 local function toppath()
 [...]
 resolvers.toppath = topath


When you commited version eb24ffd, the following bug was introduced:

 There is a bug here. It should be
 resolvers.toppath = toppath
 (double p in the right side)

 In your local copy I presume, not here.

Because of the bug (I presume), you removed the whole code.
git diff -r eb24ffd tex/context/base/file-job.lua
[...]
@@ -553,22 +553,6 @@ function resolvers.jobs.currentenvironment()
return topofstack(v_environment) en
 local done = { }
 local tolerant = false -- too messy, mkii user with the wrong
sructure should adapt

-local function toppath()
-local pathname = dirname(inputstack[#inputstack] or )
-if pathname ==  then
-return .
-else
-return pathname
-end
-end
-
-resolvers.toppath = topath

=== HERE IS THE BUG (right above) ===

-
-resolvers.prefixes.toppath = function(str)
-local fullname = cleanpath(joinpath(toppath(),str))
-return fullname
-end


Are we giving up the feature? I was kind of using it already... :-(


Cheers,
André Caldas.
___
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] RFC: path relative to current file.

2012-11-08 Thread Andre Caldas
 Are we giving up the feature? I was kind of using it already... :-(

 you have a messed up system  ... the code is in data-pre.lua

Indeed! :-)
Sorry for the mess!

Now, I have a bug at data-pre.lua. The variable inputstack is not
defined there. Here is a fix:

diff --git a/tex/context/base/data-pre.lua b/tex/context/base/data-pre.lua
index 40b430b..3ef8c59 100644
--- a/tex/context/base/data-pre.lua
+++ b/tex/context/base/data-pre.lua
@@ -91,6 +91,7 @@ prefixes.home = function(str)
 end

 local function toppath()
+local inputstack = resolvers.inputstack
 local pathname = dirname(inputstack[#inputstack] or )
 if pathname ==  then
 return .
___
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] RFC: path relative to current file.

2012-11-07 Thread Andre Caldas
Hello!

 local function toppath()
 [...]
 resolvers.toppath = topath

There is a bug here. It should be
resolvers.toppath = toppath
(double p in the right side)


André Caldas.
-- 
- Por que altera a ordem natural da conversação!
- Por que não?
- Eu não gosto, não.
- Você gosta quando copiam a mensagem original ao final do e-mail?
___
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] [dev-context] Error while updating to new beta

2012-11-06 Thread Andre Caldas
 Same error. But if I comment the definition of
 resolvers.prefixes.toppath, the error goes away.

 fixed (tested on opensuse and ubuntu)

The problem was that in some places there was a
toppath with double p (pp)
and in some places it was
topath with single p (p).

Will toppath be brought back?


Cheers,
André Caldas.
-- 
- Por que altera a ordem natural da conversação!
- Por que não?
- Eu não gosto, não.
- Você gosta quando copiam a mensagem original ao final do e-mail?
___
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] Upgrading to git repo.

2012-11-02 Thread Andre Caldas
Hello!

I have the context standalone installed.
How do I update it to reflect the last changes in the GIT repo?
http://gitorious.org/context


Cheers,
André Caldas.
-- 
- Por que altera a ordem natural da conversação!
- Por que não?
- Eu não gosto, não.
- Você gosta quando copiam a mensagem original ao final do e-mail?
___
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] RFC: path relative to current file.

2012-11-02 Thread Andre Caldas
Hello!

 It would be REALLY NICE if the functionality of pathrelativetome was
 provided by ConTeXt.

 in file-job.lua add around the function 'process':

 local function toppath()
 [...]

 \component toppath:/subpath/somefile.tex

Works like a charm, Hans! Sorry I took so long to test...
I copied file-job.lua from the GIT repository, and changed my tex
files to use toppath:/path/to/file.

For example:
https://bitbucket.org/andrecaldas/math-video-classes/src/b743f22e4f567662ac55c1ac7dc1b6d13362e11d/src/products/assorted.tex?at=default

Really nice! Thanks!! :-)


Cheers,
André Caldas.
___
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] RFC: path relative to current file.

2012-10-16 Thread Andre Caldas
 1. check for stack underflow; and/or

 such things are dealt with

 By assert, I mean:
 assert(inputstack[#inputstack], Input stack should never be empty
 when toppath() is called.)

 normally

 if inputstack[#inputstack] == nil then
 assume path .
 end

 is good enough ...

Is inputstack[#inputstack] == nil ever supposed to happen?
When reading from stdin, maybe... then, it is ok.


 (assert might make sense in situation where otherwise a
 crash would occur, but that never happens here)

If it is not supposed to happen, then it would indicate a bug, and
should be detected as early as possible. A crash is a special case
of that. But this is a matter of taste... :-)


Cheers,
André Caldas.
___
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] RFC: path relative to current file.

2012-10-15 Thread Andre Caldas
 It would be REALLY NICE if the functionality of pathrelativetome was
 provided by ConTeXt.

 in file-job.lua add around the function 'process':

You make me really happy, Hans! :-)
I will change file-job.lua on my system to test. I can do this only on
Wednesday.


 local function toppath()
 [...]
local pathname = dirname(inputstack[#inputstack] or )

I didn't check it in lua. But the unix command dirname returns .
if given an empty string. That is,
$ dirname ''
.

I don't know when inputstack could be empty... but maybe a warning
should be issued, and the return value of toppath should be declared
undefined. That is, it would be an error to call toppath if
inputstack is empty.


 [...]
 resolvers.toppath = topath

toppath? (double p)


 Then you can something:
 [...]
 \component toppath:/subpath/somefile.tex

Nice.


 All given that the top of the inputstack is still ok.

Maybe the code could have some sort of assertion to
1. check for stack underflow; and/or
2. check if the file somefile.tex exists in the directory being
popped from the stack.
Just for bug catching...


 If needed I can push/pop some relative code to start/stopcomponent alike
 code, in which case we will use a different prefix (no clue what name to
 use)

I don't think it is needed, since the toppath mechanism is rather
generic. Writing \component toppath:/subpath/somefile.tex is fine by
me. Unless you think that start/stopcomponent should be deprecated
(or, at least, discouraged) in favour of this new version.

Maybe it would be nice to have a function that returns the value of
inputstack[#inputstack]. But I don't know if it is useful...

Thank you very very much for your time!


André Caldas.
___
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] RFC: path relative to current file.

2012-10-15 Thread Andre Caldas
 1. check for stack underflow; and/or

 such things are dealt with

By assert, I mean:
assert(inputstack[#inputstack], Input stack should never be empty
when toppath() is called.)


 2. check if the file somefile.tex exists in the directory being
 popped from the stack.
 Just for bug catching...

 it all happens before a file is loaded so the normal reporting is applied

I meant an assert() inside toppath() and cleanpath().
But, as you said, this kind of assertion belongs to a test case.


André Caldas.
___
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] Commutative diagrams.

2012-10-14 Thread Andre Caldas
Dear gurus,

How can I make commutative diagrams in ConTeXt?


Cheers,
André Caldas.
___
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] Using a search engine.

2012-10-14 Thread Andre Caldas
Once, I've read about someone who, a long time ago, found it really
difficult to look for pages related to LaTeX on the internet. He used
to get a lot of fetish related pages!!!

Since context is a very common word, I'd like to know from ConTeXt users...
How do you look for ConTeXt stuff using search engines?


Cheers,
André Caldas.
___
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] PDF security settings

2012-10-14 Thread Andre Caldas
 allow/disallow printing c.

Set it free!!! :-P

Technically speaking, I'd like to tell you that there is no easy way
(without controlling the user's computer) to disallow printing. The
viewer program has to VOLUNTARILY refuse itself to obey the user and
opt to obey you. There is no easy way to accomplish that.

But anyway... almost everything I have learned on the last few years,
I owe it to people that are willing to set their knowledge free (as in
freedom) on the internet. I have learned tools (CVS, SVN, mercurial),
I have learned languages (C++, python, php), I have learned about
LaTeX, I have learned about ConTeXt (thanks Hans et al). I have
learned automake, autoconf. I have learned some GStremer. Etc, etc.

And not only that... virtually, every tool I use today, I owe it to
people who want to share. I owe it to Hans (et al) that we have
ConTeXt. We have TeX, Lua, LuaTeX, Python, Django, Rails, Ruby, PHP,
Postgres, MySQL, LibreOffice, GCC, Mercurial, Subversion, many
compilers, Apache, KDE, Gnome, Kile, etc, etc... Where would you be
now if it was not for those and for the freedom they gave you?

Don't give just the crumbs to your readers! Think of all you have
received until now... :-)

Recommended reading:
https://www.gnu.org/philosophy/right-to-read.html


Cheers,
André Caldas.
___
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] RFC: path relative to current file.

2012-10-12 Thread Andre Caldas
Hello, list!

A while ago, I raised a question about how to, in a tex, specify a
file with a path relative to the currently being processed file.
http://www.ntg.nl/pipermail/ntg-context/2012/069132.html
http://www.ntg.nl/pipermail/ntg-context/2012/068902.html

Even though the issue did not get much attention, I do believe it is
the right thing to do. I wrote a module to implement a macro I called
\pathrelativetome. My code is still a lot ugly. I don't know how to
do many things in Lua, LuaTeX and ConTeXt. It can be found here:
https://bitbucket.org/andrecaldas/math-video-classes/src/bade74046a6b/lib

It would be REALLY NICE if the functionality of pathrelativetome was
provided by ConTeXt.

call it using, for example:
context --usemodule=lib/relativetome src/products/assorted.tex

Ugly things remaining:
1. pathstack should be initialized with the path of the first tex
script. I.e.: src/products/, instead of
pathstack[1] = 'src/products'

2. Functions pop and push should be local. (relativetome.lua)

3. Call function pop automatically, just like the push function is
called automatically.

4. Avoid having to define \xproject, \xproduct, \xcomponent and
\xenvironment.
http://www.ntg.nl/pipermail/ntg-context/2012/069305.html


Any suggestions/improvements are very welcome!


Cheers,
André Caldas.
___
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] Macro inside \component.

2012-10-11 Thread Andre Caldas
 \startproduct text
 \component [\MyMacro]
 \stopproduct

Didn't work for me... does it work for you?
___
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] Frozen callback.

2012-10-10 Thread Andre Caldas
 Why is document.MyCharacterMess a string?

 The sequencers use loadstring() internally (util-seq.lua), so you
 need to supply the namespace as a string. This happens all over
 the place with action/callbacks.

 more flexible this way (one can redefine, nil or whatever such functions)

It is like a pointer to a pointer. Or a reference to a reference,
since we do not use pointers in Lua.
___
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] Macro inside \component.

2012-10-07 Thread Andre Caldas
Hello!

 Why don’t you use the \usepath command.

Because it is too magical. We DO need magic to locate system
libraries. But we DO NOT need magic to locate our own project files.
For this reason, the C language has
#include system_lib.h
and
#include local_lib.h

I don't want the file to be searched in a pile of directories. I know
exactly where the component is: it is, here:
open_mapping_theorem/notes.tex
but this location is relative to the product directory:
products/functional_analysis.
Which is relative to the project directory.

The recommended project structure is: project/products/components.
Each product is aware of its own components. And each component is
aware of its sub-components. But the components or the subcomponents
do not need to know anything about where exactly they live inside the
project. The only magic the products need, for example, is that
project wide environments are loaded automatically.

Suppose I have a project with a 100 products with 20 components each.
With all magic provided by the usepath, my components will have to be
too much aware of the remaining other 100 projects. Files will have to
have unique names, even if they are in different products.

I don't really know the internals of it, but the
\ctxloadluafile{module} looks like an example. In my system there is
the file:
/usr/share/texmf/tex/context/base/file-job.mkiv
inside it, there is a \ctxloadluafile to load file-job.lua. It seems
to me that ctxloadluafile looks for the lua file in the same directory
of the mkiv file that includes it. If this is not the way
ctxloadluafile is implemented, I would suggest that it be. If you load
the module using
context --usemodule=my_lib/my_module.mkiv my_product.tex, then, the
best bet is to load the my_module.lua from the same directory where
my_module.mkiv lives in. I am not sure, but I guess this is the
behaviour that makes most sense.

Another example is the PHP language. The behaviour of the required()
command is to look on the current working directory. And for that
reason, the PHP codes are full of:
require(dirname(__FILE__)./path/relative/file_to_include.php);

I believe thing should be:
1. Predictable.
2. Local.

For that reason, I don't want to use \usepath.

But even if this was not the case, it makes no sense to me that I
cannot call \component \macroname. Isn't it an expected behaviour?


André Caldas.
___
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] Macro inside \component.

2012-10-06 Thread Andre Caldas
Hi!

This works:

\startproduct assorted
\project math_video_classes

\unexpanded\def\pathrelativetome%
{src/products/assorted/open_mapping_theorem/notes}

%\component{\pathrelativetome}
\component{src/products/assorted/open_mapping_theorem/notes}
\stopproduct

But this does not work (no PDF is generated):

\startproduct assorted
\project math_video_classes

\unexpanded\def\pathrelativetome%
{src/products/assorted/open_mapping_theorem/notes}

\component{\pathrelativetome}
%\component{src/products/assorted/open_mapping_theorem/notes}
\stopproduct


WHY?

Thank you,
André Caldas.
___
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] Frozen callback.

2012-10-02 Thread Andre Caldas
Hello, Hans!

 Shall I simply do something like this?

 [...]

 this is not the recommended way .. better do somethign like this:
 [...]
 function document.MyCharacterMess(str,filename)

Loved your function naming! :-)
What is this str?


 if file.nameonly(filename) == ward then
 str = table.concat(string.totable(str,.),  + )

What is this doing?


 [...]
 utilities.sequencers.appendaction(textfileactions,
 system,document.MyCharacterMess)

Why is document.MyCharacterMess a string? Isn't it less error-prone
to use the function itself, instead of its name?

Sorry for my naive basic questions... :-)


Cheers,
André Caldas.
___
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] Frozen callback.

2012-10-02 Thread Andre Caldas
 I am trying to redefine the ’open_read_file’ callback.

 [...]
 utilities.sequencers.appendaction(textfileactions,
 system,document.MyCharacterMess)

All I want is to get the full path (or path relative to
lfs.currentdir()). Is textfileactions the action I should trap?

Also, shall I use after or before instead of system? Since it is
a module, probably I should use system, right? Just want to be
sure...


Thank you all!
André Caldas.
___
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] My own module.

2012-10-01 Thread Andre Caldas
 Where should I put a module if I have the following project strucutre?

Can't I have a module inside a project?
___
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] My own module.

2012-10-01 Thread Andre Caldas
Hello!

 Where should I put a module if I have the following project strucutre?

 You can load your module with \usemodule[…]
 from your environment file.

So, inside environments/load_mymodule.tex I call
\usemodule[mymodule]

But how will it be found?
My module is composed of a mkiv and a lua file. When I load it, the
mkiv seems to get loaded, but the lua file is not being loaded. How do
I get the lua file to get loaded as well?

Cheers,
André Caldas.
___
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] My own module.

2012-10-01 Thread Andre Caldas
 You have to load the lua file in your module, e.g.
 \ctxloadluafile{my_module}.

Thank you!


André Caldas.
___
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] Frozen callback.

2012-10-01 Thread Andre Caldas
Hello!

I am trying to redefine the ’open_read_file’ callback.

I am getting this error:
callback ’open_read_file’ is frozen

Why is it frozen? Can I unfreeze it?


André Caldas.
___
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] Frozen callback.

2012-10-01 Thread Andre Caldas
 I am trying to redefine the ’open_read_file’ callback.

 [...]
 direct callback access is disabled. There are usually some layers
 of abstraction on top of them, different ones for different
 callbacks. Mapping them all is a huge effort, so best refer to
 the source.

 In your case the function resolvers.openers.helpers.textopener()
 takes the place of the open_read_file callback. It can be found
 in data-tex.lua.

Shall I simply do something like this?

local function textopener(tag, filename, filehandle, coding)
  result = old_textopener(tag, filename, filehandle, coding)
  -- Do lots of things
  return result
end

resolvers.openers.helpers.textopener = textopener


Thank you,
André Caldas.
___
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] My own module.

2012-09-29 Thread Andre Caldas
Where should I put a module if I have the following project strucutre?

math-books/
   math-books.tex
   environments/
layout.tex
   products/
book1.tex
book1/
chapter1.tex
chapter2.tex
book2.tex
book2/
chapter1.tex
chapter2.tex

I have a my_module.lua and a my_module.tex.
Where should I put those files?
How do I configure my project to use my module?
How do I call my own module from book1/chapter1.tex, for example?


Thank you,
André Caldas.
___
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] Current source directory.

2012-09-28 Thread Andre Caldas
Dear Sietse,

Thanks a lot!!!

 Finally found it, after lots of trial-and-erroring through
 likely-looking table names in file-job.lua: the stack of input files
 is kept in resolvers.inputstack.

I don't program any lua. But I was taking a look at file-job.lua
myself. I have a lot to learn!! :-)


 Assuming (absolute path of invocation
 dir) + (path of file relative to invocation dir) = the desired path,

I don't mind this assumption.
Actually, I don't mind having a path relative to the currdir.


 the following should work.

 \cldcontext{
 environment.runpath .. '/'  ..
 file.pathpart(resolvers.inputstack[#resolvers.inputstack])
 }

I will try this now.


 You may or may not want to parse out any ./ and ../ components.

No, I don't need that.

 (If you do: helpful filename manipulation functions (such as
 file.pathpart, indeed) may be found in l-file.lua.)

Thanks for the tip. Might be useful someday.


 Hope this helps,

It does! :-)
Although, I think there should be a luatex command for this. That
is, something not related to ConTeXt.


Thank you,
André Caldas.
___
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] Current source directory.

2012-09-28 Thread Andre Caldas
Hi!

 the following should work.

 \cldcontext{
 environment.runpath .. '/'  ..
 file.pathpart(resolvers.inputstack[#resolvers.inputstack])
 }

Sorry, to ask such a dumb question...
- Do I need to include file-job.lua somehow?


André Caldas.
___
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] Current source directory.

2012-09-28 Thread Andre Caldas
 - Do I need to include file-job.lua somehow?

 No need to include it, it's part of the ConTeXt core.
 [...]
 Is it working for you?

No. I get:
! LuaTeX error main ctx instance:1: attempt to get length of field
'inputstack' (a nil value)
stack traceback:
main ctx instance:1: in main chunk.

system   tex  error on line 6 in file
products/topologia_geral.tex: LuaTeX error  ...

[*snip]

\cldcontext ...\directlua \zerocount {context(#1)}

l.6 }


By the way, context --version gives:
mtx-context | ConTeXt Process Management 0.52
mtx-context |
mtx-context | main context file:
/usr/share/texmf/tex/context/base/context.mkiv
mtx-context | current version: 2012.05.30 11:26


André Caldas.
___
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] Current source directory.

2012-09-28 Thread Andre Caldas
 My mistake: I tested the code I gave you in \startluacode, but then
 for the e-mail I wrapped it in \cldcontext.

I had tested it using startluacode, also. :-(


 These two versions both work, and I actually tested them this time:

 \startluacode
  context(environment.runpath .. '/'  ..
  file.pathpart(resolvers.inputstack[#resolvers.inputstack])
  )
 \stopluacode

I get this:
! LuaTeX error main ctx instance:3: attempt to get length of field
'inputstack' (a nil value)
stack traceback:
main ctx instance:3: in main chunk.

system   tex  error on line 7 in file
products/topologia_geral.tex: LuaTeX error  ...
[...]
})ted text ...resolvers.inputstack])

\luat_start_lua_code_indeed ...ua \zerocount {#1}}

l.7 \stopluacode


 \cldcontext{
  environment.runpath .. '/'  ..
  file.pathpart(resolvers.inputstack[table.getn(resolvers.inputstack)])
 }

And this:
! LuaTeX error main ctx instance:1: bad argument #1 to 'getn' (table
expected, got nil)
stack traceback:
[C]: in function 'getn'
main ctx instance:1: in main chunk.

system   tex  error on line 6 in file
products/topologia_geral.tex: LuaTeX error  ...

[...]

\cldcontext ...\directlua \zerocount {context(#1)}

l.6 }


 Sorry about that mistake.

No need to apologize! :-)
It seems that resolvers.inputstack is not defined in my system. Where
is it defined in yours? file-res.lua?


Thank you very very much, :-)
André Caldas.
___
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] Current source directory.

2012-09-27 Thread Andre Caldas
Thank you for yor time, Peter. But this is not what I wanted... :-(

 Is there a way to know the directory of the currently being processed
 source file?

 This works with mkiv:

 \starttext
 PWD: \cldcontext{io.popenpwd:read()}
 \stoptext

This gives the directory where the context command was called from.
I want the directory where the tex file being processed lives in.

For example, I have a component
products/product/article.tex
Inside a product
products/product.tex
I produce it by calling
context products/product.tex

I want to know a function that returns
/fullpath_to_project/products/
when I call it from the script products/product.tex. And I want it to return
/fullpath_to_project/products/product/
when I call it from the script products/product/article.tex.


Cheers,
André Caldas.
___
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] Current source directory.

2012-09-24 Thread Andre Caldas
Hello!

Is there a way to know the directory of the currently being processed
source file?

Something like
dirname(__FILE__)
in PHP.


Cheers,
André Caldas.
___
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] Period at the end of a alignment block.

2012-09-11 Thread Andre Caldas
 I have a macro to typeset function definitions:

  \define[5]\functionarray
 [...]

 How should I implement my functionarray?


 Use mathmatrix.
 [...]

Works very well, thank you.


André Caldas.
___
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] Search path.

2012-09-10 Thread Andre Caldas
 When I write a project, product, component or environment file, why
 would I want the references I made to be dependent on the directory
 where the script was called? Shouldn't things be like the
 #include relative_path.h
 used in the C language, for example? That is, shouldn't those paths be
 relative to the script that refers to them? [...]

 The way tex (and its path) are set up is that files are looked up on the
 current path (.) or relative to it, or in the (tds compliant) tex tree.
 Auxiliary files are created in the current directory.

I thought the reason was TeX itself. I just had some hope that ConTeXt
would fix this behavior some how. Since ConTeXt allows one to have
products and contents relatively independent from the project itself,
I thought that it would make sense to have the references to files
independent from the project structure as well.

Maybe I can just live with TEXINPUTS and BIBINPUTS... :-)

I guess the magic could be at some extent done with \usepath.
Leaving the probably already extensively discussed \usepath
precedence order for another discussion...


 One can hardcode a path in the tex source if needed. Another option is to
 move to the source path (something texmfstart --path ... texexec ... or
 mtxrun --path ... --script context ...) but what's best depends on the kind
 of project.

I definitely prefer not to hard code paths in the source. Actually, I
would like the components to not have to worry at all about where
they live...

I will study texmfstart. :-)


 Do you really need to use context mkii? As it's a new project, using context
 mkiv might be a better idea.

No, I don't. I want to use always the preferred solution. I want to
follow your guidelines and be enlightened... :-)
How did you know I was using one and not the other? I didn't know it myself!!!


Thank you very much for your help and for this great piece of software, Hans.


André Caldas.
___
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] Period at the end of a alignment block.

2012-09-10 Thread Andre Caldas
I have a macro to typeset function definitions:

  \define[5]\functionarray
  {
\startalign[n=4, align={left,right,center,left}]
  \NC #1: \NC #2 \NC \to \NC #3 \NR
  \NC \NC #4 \NC \mapsto \NC #5
\stopalign
  }


I use it like this: (notice the period at the end)
\startformula
  \functionarray{f}{X}{Y}{x}{f(x)}.
\stopformula

I get the following error:
Display math should end with \Ustopdisplaymath ...

If I remove the ., the error does not happen.

How should I implement my functionarray?

Thanks,
André Caldas.
___
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] Search path.

2012-09-09 Thread Andre Caldas
Hello, list!

I am really new to ConTeXt. I am writing a book
http://topologia-geral.ourproject.org/
It is written in LaTeX and I intend to migrate it to ConTeXt.

I want to migrate and I want to be as far from HACKS as I can. So I
want to know the recommended way to do things. One of my first
difficulties comes from the search path used by texexec. It seems to
me that the path searched for components, products and environments
depends on the path were the script was called from. That is, it
depends on the current working directory.

My question (honestly) is:
- Why would I want this behavior?

When I write a project, product, component or environment file, why
would I want the references I made to be dependent on the directory
where the script was called? Shouldn't things be like the
#include relative_path.h
used in the C language, for example? That is, shouldn't those paths be
relative to the script that refers to them?

Am I missing something?


André Caldas.
___
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
___