Re: Re[2]: Broken catcodes

Re: Re[2]: Broken catcodes

[Hans Hagen]

At 05:44 PM 5/27/2002 +0200, you wrote:

>Thanks, it works again now
>(it worked before the change without \unprotect ... \protect though).

then that was a bug (probably a forgotten \protect

>Where can I read about \protect \unprotect in ConTeXt? the mechanism
>looks very different from the \protect I know in LaTeX, I did not try
>to understand this bit of ConTeXt (and many other ;-) up to now...

ah, in context \protect does something like \makeatletter in latex (only in 
context ! and ? are also used for protection purposes)

[afaik in latex there is a \protect that has to do with preventing 
expansion in toc entries; context does not need this since normally toc 
entries are not expand them at all; in context expansion only can be 
problematic in tests, which is why some commands are defined with 
\unexpanded\def, which actually in etex is equivalent to \protected  \def, 
which clashes with my own \protected, and (lucky me) \unexpanded is also an 
etex primitive with a complete different meaning; lesson: don't confuse 
\protect with latex \protect and don't mix up \unexpanded with etex's 
\protected]

anyhow, not something for users to bother about

Hans
-------------------------------------------------------------------------
                                   Hans Hagen | PRAGMA ADE | pragma@wxs.nl
                       Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
  tel: +31 (0)38 477 53 69 | fax: +31 (0)38 477 53 74 | www.pragma-ade.com
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Re: Re[2]: Broken catcodes

[Hans Hagen]

At 05:27 PM 5/27/2002 +0200, Daniel Flipo wrote:

>%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
>%interface=en output=pdftex
>
>\definepapersize [P6] [\c!breedte=520pt,\c!hoogte=450pt]
>
>\starttext
>Text
>\stoptext

beware \c! is not valid here,

use

\unprotect

\define..

\protetc

instead

Hans
-------------------------------------------------------------------------
                                   Hans Hagen | PRAGMA ADE | pragma@wxs.nl
                       Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
  tel: +31 (0)38 477 53 69 | fax: +31 (0)38 477 53 74 | www.pragma-ade.com
-------------------------------------------------------------------------
                        information: http://www.pragma-ade.com/roadmap.pdf
                     documentation: http://www.pragma-ade.com/showcase.pdf
-------------------------------------------------------------------------

Re: Re[2]: Broken catcodes

[Daniel Flipo]

Hans Hagen wrote:

« The problem was introduced when adding support for french active : ; etc. 
« The reset code was generated under an unprotected regime, so the patch goes 
« into lang-spe.tex;
« 
« \protect % added
« 
« \deactivatelanguagespecific "
« \deactivatelanguagespecific /
« \deactivatelanguagespecific :
« \deactivatelanguagespecific ;
« \deactivatelanguagespecific ?
« \deactivatelanguagespecific !
« 
« \unprotect % added

This correction does not seem to be the right one yet :-(

Check this file:

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%interface=en output=pdftex

\definepapersize [P6] [\c!breedte=520pt,\c!hoogte=450pt]

\starttext
Text
\stoptext
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
Log file :
! Missing \endcsname inserted.
<to be read again> 
                   \unhbox 
\leavevmode ->\unhbox 
                      \voidb@x 
\bottomaccent #1#2#3#4#5->\leavevmode 
                                      \vtop {\forgetall \baselineskip \zerop...

\dohandleaccent ...acterencoding #1\endcsname {#2}
                                                  \else \csname \nocharacter...
<argument> \c !
               breedte
\dosetvalue ...!internal!n \ifcsname \k!prefix! #2
                                                  \endcsname \let \c!interna...
...
l.3 ...ize [P6] [\c!breedte=520pt,\c!hoogte=450pt]
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

[In fact the definition of papersize takes place in a module
 for presentations I derived from pre-05, but this does not make
 any difference]

When I comment out the lines
\protect
\unprotect
in lang-spe.tex and rebuild the format, my files compile again :-)

I am working with the version of ConTeXt that is on the TL7
as of last night (20020527), this correction included...

==========================================================================
Daniel Flipo                        Courriel : Daniel.Flipo@univ-lille1.fr
UFR de Mathématiques -- Bâtiment M2      Tél : (33/0) 3 20 43 67 75
Université des Sciences et Technologies  Fax : (33/0) 3 20 43 67 74
F-59655 Villeneuve d'Ascq Cedex          France
==========================================================================

Re[2]: Broken catcodes

[Hans Hagen]

At 11:46 PM 5/25/2002 +0200, Giuseppe Bilotta wrote:

>Saturday, May 25, 2002 Hans Hagen wrote:
>
>HH> At 08:14 PM 5/25/2002 +0200, Giuseppe Bilotta wrote:
> >>Hello,
> >>
> >>I'm testing ConTeXt 2002.05.17 and found out that even at
> >>protection-level 0 ! ? and @ have catcode 11 instead of 12. I
> >>wasn't able to see where the messing up occurred, though.
>
>HH> can you test the current version?
>
>Still bugged in 2002.05.24 --to be precise, @ has catcode 12, but
>! and ? have catcode 11.

Well, this one took me a while to uncover (btw, one can trace these things 
by setting \protectionthreshold to zero)

The problem was introduced when adding support for french active : ; etc. 
The reset code was generated under an unprotected regime, so the patch goes 
into lang-spe.tex;

\protect % added

\deactivatelanguagespecific "
\deactivatelanguagespecific /
\deactivatelanguagespecific :
\deactivatelanguagespecific ;
\deactivatelanguagespecific ?
\deactivatelanguagespecific !

\unprotect % added

Hans

========

For Oblomov's eyes only:

I also took the opportunity to extend the protection report code a bit

\def\reportunprotection   {\message{<unprotect \protectionstate>}}
\def\reportprotection     {\message{<protect   \protectionstate>}}

\def\protectionstate
   {\the\protectionlevel
    \ifcase\protectionthreshold=0\else
      :\space
      @=\the\catcode`@\space\space
      !=\the\catcode`!\space\space
      ?=\the\catcode`?%
    \fi}

-------------------------------------------------------------------------
                                   Hans Hagen | PRAGMA ADE | pragma@wxs.nl
                       Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
  tel: +31 (0)38 477 53 69 | fax: +31 (0)38 477 53 74 | www.pragma-ade.com
-------------------------------------------------------------------------
                        information: http://www.pragma-ade.com/roadmap.pdf
                     documentation: http://www.pragma-ade.com/showcase.pdf
-------------------------------------------------------------------------

Re[2]: Broken catcodes

[Giuseppe Bilotta]

Saturday, May 25, 2002 Hans Hagen wrote:

HH> At 08:14 PM 5/25/2002 +0200, Giuseppe Bilotta wrote:
>>Hello,
>>
>>I'm testing ConTeXt 2002.05.17 and found out that even at
>>protection-level 0 ! ? and @ have catcode 11 instead of 12. I
>>wasn't able to see where the messing up occurred, though.

HH> can you test the current version?

Still bugged in 2002.05.24 --to be precise, @ has catcode 12, but
! and ? have catcode 11.

-- 
Giuseppe "Oblomov" Bilotta