Modes and conditional part of the source

Modes and conditional part of the source

[Procházka Lukáš Ing.]

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Hello,

I'm struggling with using modes to make a part of the text conditional.

Here is my code:

----
\def\b#1{\startmode[#1]}
\def\e{\stopmode}

% \enablemode[100] % For optional usage

\starttext
   A
   \b{100} % Should be start of some conditional text from here ...
     B
   \e % ... to here
\stoptext
----

Compilation fails with:

"
tex error       > tex error on line 0 in file : ! Emergency stop
<*> cont-yes.mkiv
<empty file>
*** (job aborted, no legal \end found)
"

How to make the sample work?

Best regards,

Lukas


-- 
Ing. Lukáš Procházka | mailto:LPr@pontex.cz
Pontex s. r. o.      | mailto:pontex@pontex.cz | http://www.pontex.cz | IDDS: nrpt3sn | IČO: 40763439
Bezová 1658
147 14 Praha 4

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open source     > level 1, order 1, name 'd:/Ctx-Beta/tex/texmf-context/tex/context/base/mkiv/cont-yes.mkiv'
system          > 
system          > ConTeXt  ver: 2019.02.24 17:23 MKIV beta  fmt: 2019.2.26  int: english/english
system          > 
system          > 'cont-new.mkiv' loaded
open source     > level 2, order 2, name 'd:/Ctx-Beta/tex/texmf-context/tex/context/base/mkiv/cont-new.mkiv'
system          > beware: some patches loaded from cont-new.mkiv
close source    > level 2, order 2, name 'd:/Ctx-Beta/tex/texmf-context/tex/context/base/mkiv/cont-new.mkiv'

system          > jobfiles > using path: d:\\Lukas\\ConTeXt\\Styles
system          > files > jobname 't', input 'D:\\Lukas\\Jobs\\Ctyrkoly.RDS\\SO_221\\TZ\\t.mkiv', result 't'
fonts           > latin modern fonts are not preloaded
languages       > language 'en' is active
open source     > level 2, order 3, name 'D://Lukas/Jobs/Ctyrkoly.RDS/SO_221/TZ/t.mkiv'
fonts           > preloading latin modern fonts (second stage)
fonts           > 'fallback modern-designsize rm 12pt' is loaded
close source    > level 2, order 3, name 'D://Lukas/Jobs/Ctyrkoly.RDS/SO_221/TZ/t.mkiv'
close source    > level 1, order 3, name 'd:/Ctx-Beta/tex/texmf-context/tex/context/base/mkiv/cont-yes.mkiv'

tex error       > tex error on line 0 in file : ! Emergency stop

<*> cont-yes.mkiv
              

<empty file>

*** (job aborted, no legal \end found)



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\def\b#1{\startmode[#1]}
\def\e{\stopmode}

\starttext
  A
  \b{100}
    B
  \e
\stoptext


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Re: Modes and conditional part of the source

[Aditya Mahajan]

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On Thu, 28 Feb 2019, Procházka Lukáš Ing. wrote:

> Hello,
>
> I'm struggling with using modes to make a part of the text conditional.
>
> Here is my code:
>
> ----
> \def\b#1{\startmode[#1]}
> \def\e{\stopmode}
>
> % \enablemode[100] % For optional usage
>
> \starttext
> A
> \b{100} % Should be start of some conditional text from here ...
>   B
> \e % ... to here
> \stoptext

Modes don't work that way. You can do something like this:

\define[1]\bbb
     {\doifnotmode{#1}
         {\grabbufferdata[dummy][bbb][eee]}}

\let\eee\relax

\enablemode[100]

\starttext
A

\bbb{100}
   Inside mode 100
\eee

\bbb{101}
   Inside mode 101
\eee

\stoptext


Depending on the actual use case, there might be simpler ways.

Aditya

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Re: Modes and conditional part of the source

[Procházka Lukáš Ing.]

Hello Aditya,

thanks for the code, I'll try something like that.

Best regards,

Lukas


On Thu, 28 Feb 2019 12:54:06 +0100, Aditya Mahajan <adityam@umich.edu> wrote:

> On Thu, 28 Feb 2019, Procházka Lukáš Ing. wrote:
>
>> Hello,
>>
>> I'm struggling with using modes to make a part of the text conditional.
>>
>> Here is my code:
>>
>> ----
>> \def\b#1{\startmode[#1]}
>> \def\e{\stopmode}
>>
>> % \enablemode[100] % For optional usage
>>
>> \starttext
>> A
>> \b{100} % Should be start of some conditional text from here ...
>>   B
>> \e % ... to here
>> \stoptext
>
> Modes don't work that way. You can do something like this:
>
> \define[1]\bbb
>      {\doifnotmode{#1}
>          {\grabbufferdata[dummy][bbb][eee]}}
>
> \let\eee\relax
>
> \enablemode[100]
>
> \starttext
> A
>
> \bbb{100}
>    Inside mode 100
> \eee
>
> \bbb{101}
>    Inside mode 101
> \eee
>
> \stoptext
>
>
> Depending on the actual use case, there might be simpler ways.
>
> Aditya


-- 
Ing. Lukáš Procházka | mailto:LPr@pontex.cz
Pontex s. r. o.      | mailto:pontex@pontex.cz | http://www.pontex.cz | IDDS: nrpt3sn | IČO: 40763439
Bezová 1658
147 14 Praha 4

Mob.: +420 702 033 396

___________________________________________________________________________________
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
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___________________________________________________________________________________

Re: Modes and conditional part of the source

[Hans Hagen]

On 2/28/2019 11:29 AM, Procházka Lukáš Ing. wrote:
> Hello,
> 
> I'm struggling with using modes to make a part of the text conditional.
> 
> Here is my code:
> 
> ----
> \def\b#1{\startmode[#1]}
> \def\e{\stopmode}
> 
> % \enablemode[100] % For optional usage
> 
> \starttext
>    A
>    \b{100} % Should be start of some conditional text from here ...
>      B
>    \e % ... to here
> \stoptext
> ----
> 
> Compilation fails with:
> 
> "
> tex error       > tex error on line 0 in file : ! Emergency stop
> <*> cont-yes.mkiv
> <empty file>
> *** (job aborted, no legal \end found)
> "
> 
> How to make the sample work?
modes are like buffers ... don't wrap them in macros

(using names like \b \e is a bad idea anyway)

Hans


-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
        tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
-----------------------------------------------------------------
___________________________________________________________________________________
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
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___________________________________________________________________________________

Re: Modes and conditional part of the source

[Hans van der Meer]

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I used  \doifmode and friends for selection of mode dependent code.

dr. Hans van der Meer


> On 1 Mar 2019, at 01:24, Hans Hagen <j.hagen@xs4all.nl> wrote:
> 
> On 2/28/2019 11:29 AM, Procházka Lukáš Ing. wrote:
>> Hello,
>> I'm struggling with using modes to make a part of the text conditional.
>> Here is my code:
>> ----
>> \def\b#1{\startmode[#1]}
>> \def\e{\stopmode}
>> % \enablemode[100] % For optional usage
>> \starttext
>>   A
>>   \b{100} % Should be start of some conditional text from here ...
>>     B
>>   \e % ... to here
>> \stoptext
>> ----
>> Compilation fails with:
>> "
>> tex error       > tex error on line 0 in file : ! Emergency stop
>> <*> cont-yes.mkiv
>> <empty file>
>> *** (job aborted, no legal \end found)
>> "
>> How to make the sample work?
> modes are like buffers ... don't wrap them in macros
> 
> (using names like \b \e is a bad idea anyway)
> 
> Hans
> 
> 
> -----------------------------------------------------------------
>                                          Hans Hagen | PRAGMA ADE
>              Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
>       tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
> -----------------------------------------------------------------
> ___________________________________________________________________________________
> 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://context.aanhet.net
> archive  : https://bitbucket.org/phg/context-mirror/commits/
> wiki     : http://contextgarden.net
> ___________________________________________________________________________________


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maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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___________________________________________________________________________________