Hi Hans,
Thanks for your insight!
Indeed I'll wikify what you explained, once I have tested it with the next
upload. Would \HL and \VL be also available in mkiv ?
Best regards: Otared
> On 26 Nov 2020, at 23:23, Hans Hagen <j.ha...@xs4all.nl> wrote:
>
> On 11/26/2020 8:43 PM, Otared Kavian wrote:
>> Hi Jean-Philippe,
>> A few weeks ago I saw briefly the discussion about Hans' message regarding
>> \noalign and the the new definitions of \HR and \VR that you are sending.
>> Indeed your solution works great !
>> Just for the case other people may have the same question about writing
>> block matrix, I copy below the whole example which can be found later in the
>> mail archive.
>> (For mkiv, I don't know how to do the same thing…).
>
> The \noaligned permits a \protected definition. Otherwise one has to do
> something
>
> \def\VR{\noalign\bgroup
> <command that picks up [#1]
>
> that command then does the rule and ends the noalign. Also, that one cannot
> be \protected (a pitty in case one uses \expanded or so)
>
> So ... a multistep approach. Plenty of that in mkiv.
>
>> %%% begin block-matrix.tex
>> % in LMTX defining \HR and \VR to create block matrices:
>> \pushoverloadmode
>> \noaligned\tolerant\protected\def\HR[#1]{\noalign{\hrule #1}}
>> \popoverloadmode
>> \def\VR{\dosingleempty\doVR}
>> \def\doVR[#1]{\NC \hskip-0.5em \vrule #1 \hskip-0.5em \NC}
>
> given the \HR definition that should be
>
> \tolerant\protected\def\VR[#1]{\NC ...\NC}
>
>> \definemathmatrix[mymatrix]
>> [left={\left(\,},
>> right={\, \right)}]
>> \starttext
>> \startformula
>> \startmymatrix
>> \NC A \VR B \NR
>> \HR
>> \NC C \VR D \NR
>> \stopmymatrix
>> \stopformula
>> \stoptext
>
> Anyway, a feature like this should be in sync with other table mechanisms, so
>
> \definemathmatrix
> [mymatrix]
> [left={\left\lparent\thinspace},
> right={\thinspace\right\rparent}]
>
> \starttext
>
> \startformula
> \startmymatrix
> \NC A \VL B \NR
> \HL
> \NC C \VL D \NR
> \stopmymatrix
> \stopformula
>
> \startformula
> \startmymatrix
> \NC A \VL[3,green] B \NR
> \HL[10,red]
> \NC C \VL D \NR
> \stopmymatrix
> \stopformula
>
> \stoptext
>
> A bit more code needed but the next upload will have it. Of course you have
> to wikify it.
>
> 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
> -----------------------------------------------------------------
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