Bug with linenumbering

Bug with linenumbering

[Aditya Mahajan]

Hi,

Line numbering does not respect the parameters given with 
\startlinenumbering. For example:

\definelinenumbering
   [test]

\starttext
\startlinenumbering[test][color=blue,align=flushright,distance=0.5em]
   \input knuth
\stoplinenumbering

\page

\setuplinenumbering
   [test][color=blue,align=flushright,distance=0.5em]

\startlinenumbering[test]
   \input knuth
\stoplinenumbering

\stoptext

Aditya
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Re: Bug with linenumbering

[Aditya Mahajan]

On Tue, 1 May 2012, Aditya Mahajan wrote:

> Line numbering does not respect the parameters given with 
> \startlinenumbering.

I think that the state at the end of the page flush is used, rather than 
the state at the beginning of line numbering. An example illustrating 
this:

\definelinenumbering
   [test]

\starttext
\startlinenumbering[test][color=blue,align=flushright,distance=0.5em]
   \input knuth
\stoplinenumbering

\setuplinenumbering
   [test][color=blue,align=flushright,distance=0.5em]

\startlinenumbering[test]
   \input knuth
\stoplinenumbering

\setuplinenumbering
   [test][color=red,align=flushright,distance=0.5em]
\stoptext

(Both snippets have red line numbers!)

Aditya
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Re: Bug with linenumbering

[Hans Hagen]

On 1-5-2012 21:43, Aditya Mahajan wrote:
> Hi,
>
> Line numbering does not respect the parameters given with
> \startlinenumbering. For example:

Line numbering is a delayed operation. As they are handled when the page 
is constructed the settings of that moment apply. In practice only the 
start key is handled when you pass settings to \start.... (the only 
reason for  having the second argument is number start/restart etc). If 
you want different renderings, the best is to define a specific instance 
of line numbering. Maybe a future version will be more clever.

Hans


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Re: Bug with linenumbering

[Aditya Mahajan]

On Wed, 2 May 2012, Hans Hagen wrote:

> On 1-5-2012 21:43, Aditya Mahajan wrote:
>> Hi,
>> 
>> Line numbering does not respect the parameters given with
>> \startlinenumbering. For example:
>
> Line numbering is a delayed operation. As they are handled when the page is 
> constructed the settings of that moment apply. In practice only the start key 
> is handled when you pass settings to \start.... (the only reason for  having 
> the second argument is number start/restart etc). If you want different 
> renderings, the best is to define a specific instance of line numbering.

A little background: In the initial version of the vim module, I used to 
do line numbering manually (each line started with \NL macro, which 
expanded to a number in an appropriate style depending on whether line 
numbering was enabled or not. When I rewrote the module to use the filter 
module, I also rewrote the line numbering mechanism to use ConTeXt's 
inbuilt line numbering macros, but I cannot get them to work.

Consider the following example. I want to define an environment, which, 
amongst other things does line numbering. I want the user to control the 
style and color of line numbering, so I define keys numberstyle and 
numbercolor, which are then passed on to the line numbering macros. The 
most obvious implementation of this does not work.

\definenamespace
     [whatever]
     [
       type=module,
       name=whatever,
       command=yes,
       setup=yes,
       parent=whatever,
     ]

\appendtoks
     \definelinenumbering
           [\currentwhatever]
           [
             color=\whateverparameter{numbercolor},
             style=\whateverparameter{numberstyle},
           ]%
     \setvalue{start\currentwhatever}{\dostartwhatever[\currentwhatever]}%
     \setvalue{stop\currentwhatever}{\dostopwhatever}%
\to\everydefinewhatever

% For illustration. The actual macro is more complicated.
\def\dostartwhatever[#1]%
     {\startlinenumbering[#1]}

\def\dostopwhatever
     {\stoplinenumbering}

%%%%

\definewhatever[testing][numbercolor=red,numberstyle=bold]

\starttext
\starttesting
   \input knuth
\stoptesting
\stoptext

When I run it, the line number is not styled. Any idea on what I can do 
differently?

Aditya

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Re: Bug with linenumbering

[Wolfgang Schuster]

Am 03.05.2012 um 06:58 schrieb Aditya Mahajan:

> On Wed, 2 May 2012, Hans Hagen wrote:
> 
>> On 1-5-2012 21:43, Aditya Mahajan wrote:
>>> Hi,
>>> Line numbering does not respect the parameters given with
>>> \startlinenumbering. For example:
>> 
>> Line numbering is a delayed operation. As they are handled when the page is constructed the settings of that moment apply. In practice only the start key is handled when you pass settings to \start.... (the only reason for  having the second argument is number start/restart etc). If you want different renderings, the best is to define a specific instance of line numbering.
> 
> A little background: In the initial version of the vim module, I used to do line numbering manually (each line started with \NL macro, which expanded to a number in an appropriate style depending on whether line numbering was enabled or not. When I rewrote the module to use the filter module, I also rewrote the line numbering mechanism to use ConTeXt's inbuilt line numbering macros, but I cannot get them to work.
> 
> Consider the following example. I want to define an environment, which, amongst other things does line numbering. I want the user to control the style and color of line numbering, so I define keys numberstyle and numbercolor, which are then passed on to the line numbering macros. The most obvious implementation of this does not work.
> 
> […]
> 
> \appendtoks
>   \definelinenumbering
>         [\currentwhatever]
>         [
>           color=\whateverparameter{numbercolor},
>           style=\whateverparameter{numberstyle},
>         ]%
>   \setvalue{start\currentwhatever}{\dostartwhatever[\currentwhatever]}%
>   \setvalue{stop\currentwhatever}{\dostopwhatever}%
> \to\everydefinewhatever

You assume \definelinenumbering has a second argument for the settings but this isn’t the case and you need \setuplinenumbering to set them.

Wolfgang
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Re: Bug with linenumbering

[Aditya Mahajan]

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On Thu, 3 May 2012, Wolfgang Schuster wrote:

> You assume \definelinenumbering has a second argument for the settings but this isn’t the case

D'oh.

> and you need \setuplinenumbering to set them.

I also needed to change \setvalue to \setevalue in the example, and add an 
\expanded to get it to work.

\definenamespace
      [whatever]
      [
        type=module,
        name=whatever,
        command=yes,
        setup=yes,
        parent=whatever,
      ]

\appendtoks
      \definelinenumbering
            [\currentwhatever]%
      \expanded{\setuplinenumbering
            [\currentwhatever]
            [
              color=\whateverparameter{numbercolor},
              style=\whateverparameter{numberstyle},
            ]}%

\setevalue{start\currentwhatever}{\dostartwhatever[\currentwhatever]}%
      \setevalue{stop\currentwhatever}{\dostopwhatever}%
\to\everydefinewhatever

% For illustration. The actual macro is more complicated.
\def\dostartwhatever[#1]%
      {\startlinenumbering[#1]}

\def\dostopwhatever
      {\stoplinenumbering}

%%%%

\definewhatever[testing][numbercolor=red,numberstyle=bold]

\starttext
\starttesting
    \input knuth
\stoptesting
\stoptext

Thanks,
Aditya

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Re: Bug with linenumbering

[Wolfgang Schuster]

Am 03.05.2012 um 17:18 schrieb Aditya Mahajan:

> On Thu, 3 May 2012, Wolfgang Schuster wrote:
> 
>> You assume \definelinenumbering has a second argument for the settings but this isn’t the case
> 
> D'oh.
> 
>> and you need \setuplinenumbering to set them.
> 
> I also needed to change \setvalue to \setevalue in the example, and add an \expanded to get it to work.

In MkIV \setuevalue is better the \setevalue and \normalunexpanded is faster than \expanded.

The problem in your approach is that you can only set the style and color value with \definewhatever
where I think it’s better to use \setupwhatever.

\unprotect

\installnamespace                    {whatever}
\installcommandhandler \????whatever {whatever} \????whatever

\appendtoks
  \definelinenumbering[\currentwhatever]%
\to \everydefinewhatever

\appendtoks
  \setuevalue{\e!start\currentwhatever}{\whatever_start[\currentwhatever]}%
  \setuevalue{\e!stop\currentwhatever }{\whatever_stop                   }%
\to \everydefinewhatever

\appendtoks
  \normalexpanded{\setuplinenumbering
    [\currentwhatever]
    [\c!color=\whateverparameter\c!numbercolor,
     \c!style=\whateverparameter\c!numberstyle]}%
\to \everysetupwhatever

\unexpanded\def\whatever_start[#1]%
  {\begingroup
   \edef\currentwhatever{#1}%
   \startlinenumbering[\currentwhatever]}

\unexpanded\def\whatever_stop
  {\stoplinenumbering
   \endgroup}

\protect

\definewhatever[testing][numbercolor=red,numberstyle=bold]
\setupwhatever [testing][numbercolor=blue]

\starttext
\starttesting
\input knuth
\stoptesting
\stoptext

Wolfgang
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Re: Bug with linenumbering

[Aditya Mahajan]

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On Thu, 3 May 2012, Wolfgang Schuster wrote:

>
> Am 03.05.2012 um 17:18 schrieb Aditya Mahajan:
>
>> On Thu, 3 May 2012, Wolfgang Schuster wrote:
>>
>>> You assume \definelinenumbering has a second argument for the settings but this isn’t the case
>>
>> D'oh.
>>
>>> and you need \setuplinenumbering to set them.
>>
>> I also needed to change \setvalue to \setevalue in the example, and add an \expanded to get it to work.
>
> In MkIV \setuevalue is better the \setevalue and \normalunexpanded is faster than \expanded.
>
> The problem in your approach is that you can only set the style and color value with \definewhatever
> where I think it’s better to use \setupwhatever.

Thanks for both the tips!

Aditya

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