[NTG-context] Use headcommand in \definedescription together with \definehighlight

[NTG-context] Use headcommand in \definedescription together with \definehighlight

[Gerion Entrup]

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Hi,

I was in the process to convert an itemize part to a description and wanted to simplify the code in the same move.
I discovered headcommand for that, but struggled to set the text in an highlight _and_ make a colon at the end.
Do you know, if this is possible?

Here is a MWE:
```
\definehighlight[hl][style={\m{>}\,\switchtobodyfont[tt]}]

\definedescription[category][
	alternative=top,
	headstyle=bold,
	width=broad,
]

\definedescription[desc][
	width=broad,
	distance={\widthofstring{~}},
	headcommand={\groupedcommand{\hl}{:}},
	% headcommand={\groupedcommand{}{:}}, % this compiles but the highlight is lost
	% headcommand={\groupedcommand{\starthl}{\stophl :}}, % this does not compile
	headstyle=,
	before={\startpacked},
	after={\stoppacked},
	alternative=hanging,
]

\starttext

This is a \hl{highlight}.

Some listings

\startcategory{Itemize}
	\startitemize[packed]
		\item \hl{first}: one
		\item \hl{second}: two
	\stopitemize
\stopcategory

Now the same as desc:
\startcategory{Desc}
	\startdesc{first} one \stopdesc
	\startdesc{second} two \stopdesc
\stopcategory

\stoptext
```
The itemize looks like it should look (except of the dots).

Best,
Gerion

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[NTG-context] Re: Use headcommand in \definedescription together with \definehighlight

[Aditya Mahajan]

On Mon, 24 Jun 2024, Gerion Entrup wrote:

> Hi,
> 
> I was in the process to convert an itemize part to a description and wanted to simplify the code in the same move.
> I discovered headcommand for that, but struggled to set the text in an highlight _and_ make a colon at the end.

Not sure what exactly you want, but how about:

\definehighlight[hl][style={\m{>}\,\switchtobodyfont[tt]}]
% This is the wrong way to define such a command as '>' is not part of the style. I have left this definition just for comparison with the soln below.

\definedescription[category][
	alternative=top,
	headstyle=bold,
	width=broad,
]

\definedescription[desc][
	width=fit,
	distance={\widthofstring{~}},
    headcommand={\groupedcommand{>\,}{:}}, 
	headstyle=\tt,
	before={\startpacked},
	after={\stoppacked},
	alternative=hanging,
]

\starttext

This is a \hl{highlight}.

Some listings

\startcategory{Itemize}
	\startitemize[packed]
		\item \hl{first}: one
		\item \hl{second}: two
	\stopitemize
\stopcategory

Now the same as desc:
\startcategory{Desc}
	\startdesc{first} one \stopdesc
	\startdesc{second} two \stopdesc
\stopcategory

\stoptext

Aditya
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[NTG-context] Re: Use headcommand in \definedescription together with \definehighlight

[Gerion Entrup]

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Am Montag, 24. Juni 2024, 21:20:19 MESZ schrieb Aditya Mahajan:
> On Mon, 24 Jun 2024, Gerion Entrup wrote:
> 
> > Hi,
> > 
> > I was in the process to convert an itemize part to a description and wanted to simplify the code in the same move.
> > I discovered headcommand for that, but struggled to set the text in an highlight _and_ make a colon at the end.
> 
> Not sure what exactly you want, but how about:
> 
> \definehighlight[hl][style={\m{>}\,\switchtobodyfont[tt]}]
> % This is the wrong way to define such a command as '>' is not part of the style. I have left this definition just for comparison with the soln below.

Is there a better way to define a highlight that sets a style (color, font) _and_ a prefix (symbol)?
Another way, I know of, would be just a plain def, something like \def{\hl}{\groupedcommand{>\,\switchtobodyfont[tt]}{}}, but actually I want to define a highlight (just with an additional prefix).

> \definedescription[category][
> 	alternative=top,
> 	headstyle=bold,
> 	width=broad,
> ]
> 
> \definedescription[desc][
> 	width=fit,
> 	distance={\widthofstring{~}},
>     headcommand={\groupedcommand{>\,}{:}}, 

Hmm, this works, but duplicates the above definition.
If I don't want to use > as prefix but ›, I need to replace it in two places.

> 	headstyle=\tt,
> 	before={\startpacked},
> 	after={\stoppacked},
> 	alternative=hanging,
> ]

Gerion


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[NTG-context] Re: Use headcommand in \definedescription together with \definehighlight

[Wolfgang Schuster]

Gerion Entrup schrieb am 24.06.2024 um 23:57:
> Am Montag, 24. Juni 2024, 21:20:19 MESZ schrieb Aditya Mahajan:
>> On Mon, 24 Jun 2024, Gerion Entrup wrote:
>>
>>> Hi,
>>>
>>> I was in the process to convert an itemize part to a description and wanted to simplify the code in the same move.
>>> I discovered headcommand for that, but struggled to set the text in an highlight _and_ make a colon at the end.
>> Not sure what exactly you want, but how about:
>>
>> \definehighlight[hl][style={\m{>}\,\switchtobodyfont[tt]}]
>> % This is the wrong way to define such a command as '>' is not part of the style. I have left this definition just for comparison with the soln below.
> Is there a better way to define a highlight that sets a style (color, font) _and_ a prefix (symbol)?
> Another way, I know of, would be just a plain def, something like \def{\hl}{\groupedcommand{>\,\switchtobodyfont[tt]}{}}, but actually I want to define a highlight (just with an additional prefix).

1. ConTeXt already uses \hl as name for a existing command.

2. Use \definestartstop:

\definestartstop [gerion] [style=mono,left={›\thinspace}]

\starttext

text

\gerion{text}

\stoptext

>> \definedescription[category][
>> 	alternative=top,
>> 	headstyle=bold,
>> 	width=broad,
>> ]
>>
>> \definedescription[desc][
>> 	width=fit,
>> 	distance={\widthofstring{~}},

distance=\spaceamount,

Wolfgang

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[NTG-context] Re: Use headcommand in \definedescription together with \definehighlight (now: \definestartstop)

[Gerion Entrup]

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Am Dienstag, 25. Juni 2024, 00:09:09 MESZ schrieb Wolfgang Schuster:
> Gerion Entrup schrieb am 24.06.2024 um 23:57:
> > Am Montag, 24. Juni 2024, 21:20:19 MESZ schrieb Aditya Mahajan:
> >> On Mon, 24 Jun 2024, Gerion Entrup wrote:
> >>
> >>> Hi,
> >>>
> >>> I was in the process to convert an itemize part to a description and wanted to simplify the code in the same move.
> >>> I discovered headcommand for that, but struggled to set the text in an highlight _and_ make a colon at the end.
> >> Not sure what exactly you want, but how about:
> >>
> >> \definehighlight[hl][style={\m{>}\,\switchtobodyfont[tt]}]
> >> % This is the wrong way to define such a command as '>' is not part of the style. I have left this definition just for comparison with the soln below.
> > Is there a better way to define a highlight that sets a style (color, font) _and_ a prefix (symbol)?
> > Another way, I know of, would be just a plain def, something like \def{\hl}{\groupedcommand{>\,\switchtobodyfont[tt]}{}}, but actually I want to define a highlight (just with an additional prefix).
> 
> 1. ConTeXt already uses \hl as name for a existing command.
> 
> 2. Use \definestartstop:
> 
> \definestartstop [gerion] [style=mono,left={›\thinspace}]
> 
> \starttext
> 
> text
> 
> \gerion{text}
> 
> \stoptext
> 
> >> \definedescription[category][
> >> 	alternative=top,
> >> 	headstyle=bold,
> >> 	width=broad,
> >> ]
> >>
> >> \definedescription[desc][
> >> 	width=fit,
> >> 	distance={\widthofstring{~}},
> 
> distance=\spaceamount,
> 
> Wolfgang

This seems to be much better but does not lead to the wanted result. The full example now is:
```
\definestartstop[myhl][style=mono,left={›\thinspace}]

\definedescription[categorie][
	alternative=top,
	headstyle=bold,
	width=broad,
]

\definedescription[desc][
	width=broad,
	distance=\spaceamount,
	headcommand={\groupedcommand{\startmyhl}{\stopmyhl :}},
	headstyle=,
	before={\startpacked},
	after={\stoppacked},
	alternative=hanging
]

\starttext

This is a \myhl{highlight}.

Some listings

\startcategorie{Itemize}
	\startitemize[packed]
		\item \myhl{first}: one
		\item \myhl{second}: two
	\stopitemize
\stopcategorie

Now the same as desc:
\startcategorie{Desc}
	\startdesc{first} one \stopdesc
	\startdesc{second} two \stopdesc
\stopcategorie

\stoptext
```

This adopts the correct style in \startdesc \stopdesc and sets the colon but omits the › (the left part).

Gerion

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[NTG-context] Re: Use headcommand in \definedescription together with \definehighlight (now: \definestartstop)

[Wolfgang Schuster]

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Gerion Entrup schrieb am 25.06.2024 um 08:41:
> Am Dienstag, 25. Juni 2024, 00:09:09 MESZ schrieb Wolfgang Schuster:
>> Gerion Entrup schrieb am 24.06.2024 um 23:57:
>>> Am Montag, 24. Juni 2024, 21:20:19 MESZ schrieb Aditya Mahajan:
>>>> On Mon, 24 Jun 2024, Gerion Entrup wrote:
>>>>
>>>>> Hi,
>>>>>
>>>>> I was in the process to convert an itemize part to a description and wanted to simplify the code in the same move.
>>>>> I discovered headcommand for that, but struggled to set the text in an highlight _and_ make a colon at the end.
>>>> Not sure what exactly you want, but how about:
>>>>
>>>> \definehighlight[hl][style={\m{>}\,\switchtobodyfont[tt]}]
>>>> % This is the wrong way to define such a command as '>' is not part of the style. I have left this definition just for comparison with the soln below.
>>> Is there a better way to define a highlight that sets a style (color, font) _and_ a prefix (symbol)?
>>> Another way, I know of, would be just a plain def, something like \def{\hl}{\groupedcommand{>\,\switchtobodyfont[tt]}{}}, but actually I want to define a highlight (just with an additional prefix).
>>
>> 1. ConTeXt already uses \hl as name for a existing command.
>>
>> 2. Use \definestartstop:
>>
>> \definestartstop [gerion] [style=mono,left={›\thinspace}]
>>
>> \starttext
>>
>> text
>>
>> \gerion{text}
>>
>> \stoptext
>>
>>>> \definedescription[category][
>>>> 	alternative=top,
>>>> 	headstyle=bold,
>>>> 	width=broad,
>>>> ]
>>>>
>>>> \definedescription[desc][
>>>> 	width=fit,
>>>> 	distance={\widthofstring{~}},
>>
>> distance=\spaceamount,
>>
>> Wolfgang
> 
> This seems to be much better but does not lead to the wanted result. The full example now is:
> ```
> \definestartstop[myhl][style=mono,left={›\thinspace}]
> 
> \definedescription[categorie][
> 	alternative=top,
> 	headstyle=bold,
> 	width=broad,
> ]
> 
> \definedescription[desc][
> 	width=broad,
> 	distance=\spaceamount,
> 	headcommand={\groupedcommand{\startmyhl}{\stopmyhl :}},
> 	headstyle=,
> 	before={\startpacked},
> 	after={\stoppacked},
> 	alternative=hanging
> ]
> 
> \starttext
> 
> This is a \myhl{highlight}.
> 
> Some listings
> 
> \startcategorie{Itemize}
> 	\startitemize[packed]
> 		\item \myhl{first}: one
> 		\item \myhl{second}: two
> 	\stopitemize
> \stopcategorie
> 
> Now the same as desc:
> \startcategorie{Desc}
> 	\startdesc{first} one \stopdesc
> 	\startdesc{second} two \stopdesc
> \stopcategorie
> 
> \stoptext
> ```
> 
> This adopts the correct style in \startdesc \stopdesc and sets the colon but omits the › (the left part).

You can do the following in the next version.

1. Add "arguments=yes" to \definestartstop to enable the optional 
argument for the new command.

2. Use the new commands with the "headcommand" key and apply ":" as 
right delimiter for the content of \Highlight.

\definestartstop
   [Highlight]
   [arguments=yes,
        style=mono,
         left={›\thinspace}]

\definedescription
   [description]
   [      width=broad,
       distance=\spaceamount,
    headcommand=\Highlight[right=:],
    alternative=hanging]

\starttext

This is a \Highlight{highlight}.

\startdescription[title={Lorem ipsum}]
\samplefile{lorem}
\stopdescription

\stoptext

Wolfgang

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[NTG-context] Re: Use headcommand in \definedescription together with \definehighlight (now: \definestartstop)

[Gerion Entrup]

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Am Donnerstag, 27. Juni 2024, 22:19:02 MESZ schrieb Wolfgang Schuster:
> Gerion Entrup schrieb am 25.06.2024 um 08:41:
> > Am Dienstag, 25. Juni 2024, 00:09:09 MESZ schrieb Wolfgang Schuster:
> >> Gerion Entrup schrieb am 24.06.2024 um 23:57:
> >>> Am Montag, 24. Juni 2024, 21:20:19 MESZ schrieb Aditya Mahajan:
> >>>> On Mon, 24 Jun 2024, Gerion Entrup wrote:
> >>>>
> >>>>> Hi,
> >>>>>
> >>>>> I was in the process to convert an itemize part to a description and wanted to simplify the code in the same move.
> >>>>> I discovered headcommand for that, but struggled to set the text in an highlight _and_ make a colon at the end.
> >>>> Not sure what exactly you want, but how about:
> >>>>
> >>>> \definehighlight[hl][style={\m{>}\,\switchtobodyfont[tt]}]
> >>>> % This is the wrong way to define such a command as '>' is not part of the style. I have left this definition just for comparison with the soln below.
> >>> Is there a better way to define a highlight that sets a style (color, font) _and_ a prefix (symbol)?
> >>> Another way, I know of, would be just a plain def, something like \def{\hl}{\groupedcommand{>\,\switchtobodyfont[tt]}{}}, but actually I want to define a highlight (just with an additional prefix).
> >>
> >> 1. ConTeXt already uses \hl as name for a existing command.
> >>
> >> 2. Use \definestartstop:
> >>
> >> \definestartstop [gerion] [style=mono,left={›\thinspace}]
> >>
> >> \starttext
> >>
> >> text
> >>
> >> \gerion{text}
> >>
> >> \stoptext
> >>
> >>>> \definedescription[category][
> >>>> 	alternative=top,
> >>>> 	headstyle=bold,
> >>>> 	width=broad,
> >>>> ]
> >>>>
> >>>> \definedescription[desc][
> >>>> 	width=fit,
> >>>> 	distance={\widthofstring{~}},
> >>
> >> distance=\spaceamount,
> >>
> >> Wolfgang
> > 
> > This seems to be much better but does not lead to the wanted result. The full example now is:
> > ```
> > \definestartstop[myhl][style=mono,left={›\thinspace}]
> > 
> > \definedescription[categorie][
> > 	alternative=top,
> > 	headstyle=bold,
> > 	width=broad,
> > ]
> > 
> > \definedescription[desc][
> > 	width=broad,
> > 	distance=\spaceamount,
> > 	headcommand={\groupedcommand{\startmyhl}{\stopmyhl :}},
> > 	headstyle=,
> > 	before={\startpacked},
> > 	after={\stoppacked},
> > 	alternative=hanging
> > ]
> > 
> > \starttext
> > 
> > This is a \myhl{highlight}.
> > 
> > Some listings
> > 
> > \startcategorie{Itemize}
> > 	\startitemize[packed]
> > 		\item \myhl{first}: one
> > 		\item \myhl{second}: two
> > 	\stopitemize
> > \stopcategorie
> > 
> > Now the same as desc:
> > \startcategorie{Desc}
> > 	\startdesc{first} one \stopdesc
> > 	\startdesc{second} two \stopdesc
> > \stopcategorie
> > 
> > \stoptext
> > ```
> > 
> > This adopts the correct style in \startdesc \stopdesc and sets the colon but omits the › (the left part).
> 
> You can do the following in the next version.
> 
> 1. Add "arguments=yes" to \definestartstop to enable the optional 
> argument for the new command.
> 
> 2. Use the new commands with the "headcommand" key and apply ":" as 
> right delimiter for the content of \Highlight.
> 
> \definestartstop
>    [Highlight]
>    [arguments=yes,
>         style=mono,
>          left={›\thinspace}]
> 
> \definedescription
>    [description]
>    [      width=broad,
>        distance=\spaceamount,
>     headcommand=\Highlight[right=:],
>     alternative=hanging]
> 
> \starttext
> 
> This is a \Highlight{highlight}.
> 
> \startdescription[title={Lorem ipsum}]
> \samplefile{lorem}
> \stopdescription
> 
> \stoptext
> 
> Wolfgang

Thanks, that will work.
Do you know, why the groupedcommand solution does not work?

Gerion

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[NTG-context] Re: Use headcommand in \definedescription together with \definehighlight (now: \definestartstop)

[Wolfgang Schuster]

Gerion Entrup schrieb am 28.06.2024 um 11:40:

> Do you know, why the groupedcommand solution does not work?

The command and the environment which are created by \definestartstop 
can't be interchanged when you use the before/after and left/right keys.

%%%% begin example
\usemodule[visual]

\definestartstop
   [Example]
   [before={\par\leftaligned{\tttf [before]}\par},
     after={\par\leftaligned{\tttf [after]}\par},
	 left={{\tttf [left]}},
	right={{\tttf [right]}}]

\starttext

\fakewords{10}{20}
\startExample
\fakewords{10}{20}
\stopExample
\fakewords{10}{20}

\blank

\fakewords{3}{5}
\Example{\fakewords{3}{5}}
\fakewords{3}{5}

\stoptext
%%%% end example

Wolfgang
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