[NTG-context] Re: Tikz calendar problem.

[Aditya Mahajan <adityam@umich.edu>]

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On Mon, 4 Sep 2023, Fabrice L wrote:

> Dear list,
> 
> I have a problem with tikzCalendar on a recent installation. This minimal example :
> 
> 8< ————————
> 
> \usemodule[tikz]
> \usetikzlibrary[calendar]
>  
> \starttext
> This should works:
> \blank
> \tikz  \calendar[dates=2000-01-01 to 2000-01-31,week list];
> \blank
> but this does not !
> \stoptext
> 
> 8< ————————
> 
> should work, but does not. The problem seems to be here:
> 
> open source     > level 2, order 61, name 'tikzlibrarycalendar.code.tex'
> modules         > 'pgfcalendar' is not found
> close source    > level 2, order 61, name ‘tikzlibrarycalendar.code.tex'
> 
> The file « tikzlibrarycalendar.code.tex » is read, but the file « pgfcalendar » seems missing. I have reinstall a new standalone version of ConTeXt, with all the modules (with the new script from ConTeXt Garden), but nothing works. 

Here is what is going on:

`tikzlibrarycalendar.code.tex` contains the line:

  \pgfutil@usemodule{pgfcalendar}

In `generic/pgf/utilities/pgfutil-context.def`, \pgfutil@usemodule is defined as:

  \def\pgfutil@usemodule#1{\usemodule[#1]}

which is supposed to load the file `plain/pgf/utilities/pgfcalendar.tex` which just a wrapper to load `pgfcalendar.code.tex`:


    \edef\pgfcalendaratcode{\the\catcode`\@}
    \catcode`\@=11

    \input pgfrcs.tex
    \input pgfcalendar.code.tex

    \catcode`\@=\pgfcalendaratcode

    \endinput

Now, the reason that this is not working is that the new module installer for tikz removes all the files from `tex/plain`. It appears that tikz is at fault here. If the file `pgfcalendar.tex` is supposed to used by both plain and context, then it should be in `tex/generic` directory rather than `tex/plain` directory. 

However, moving the file to `tex/generic` will not fix the issue directly loading the above `pgfcalendar.code.tex` in context is surely going to fail because of the manual catcode changes that are being done by pgfcalendar. 

So, I propose that we add a file `m-tikz-pgfcalendar.tex` as a wrapper around `pgfcalendar.code.tex` and in `m-tikz.mk(xl|iv)` add


  \definefilesynonym [pgfcalendar]      [tikz-pgfcalendar]


I am attaching `m-tikz-calendar` which causes the original example to compile (provided one adds the definefilesynonym before calling \usetikzlibrary[calendar]). Can you please test if other features of pgfcalendar are working with this file.

Aditya


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