[NTG-context] Spacing issue in \digits with mode=3

[NTG-context] Spacing issue in \digits with mode=3

[Kirill Davidov]

Greetings,

I have been making a table with \digits aligned cells and noticed that
in mode 3 (thin mu skips as group separator, comma as decimal separator)
a specification like {_X.=} causes the single digit number to be
misaligned, it's like there's about 2mu worth of space just before the
number. I don't have much of an idea as to what causes it. It doesn't
seem to be an issue in mode 1, although it may be simply not as
noticeable. This also affects \unit.

MWE:
\setdigitmode{3}

\startdocument

\showglyphs
\enabletrackers[visualizers.glue]
\startxtable[align=center]
    \startxtablehead
        \startxrow
            \startxcell
                Data
            \stopxcell
        \stopxrow
    \stopxtablehead
    \startxtablebody
        \startxrow
            \startxcell
                \digits{10.001==}
            \stopxcell
        \stopxrow
        \startxrow
            \startxcell
                \digits{_1.=====} % weird spacing issue here
            \stopxcell
        \stopxrow
        \startxrow
            \startxcell
                \digits{20.34909}
            \stopxcell
        \stopxrow
    \stopxtablebody
\stopxtable

\halign{%
    \hss\alignmark\hss\cr
    \digits{10.001==}\cr
    \digits{_1.=====}\cr % weird spacing issue here
    \digits{20.34909}\cr
}

\stopdocument

Kirill

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[NTG-context] Re: Spacing issue in \digits with mode=3

[vm via ntg-context]

On 26/10/2024 11:32, Kirill Davidov wrote:
> I don't have much of an idea as to what causes it. It doesn't
> seem to be an issue in mode 1, although it may be simply not as
> noticeable. This also affects \unit.


if you replace

   \digits{_1.=====}

with
   \digits{_2.=====}

things seem to look not that shabby


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[NTG-context] Re: Spacing issue in \digits with mode=3

[Wolfgang Schuster]

Kirill Davidov schrieb am 26.10.2024 um 11:32:
> Greetings,
>
> I have been making a table with \digits aligned cells and noticed that
> in mode 3 (thin mu skips as group separator, comma as decimal separator)
> a specification like {_X.=} causes the single digit number to be
> misaligned, it's like there's about 2mu worth of space just before the
> number. I don't have much of an idea as to what causes it. It doesn't
> seem to be an issue in mode 1, although it may be simply not as
> noticeable. This also affects \unit.

There are no mu skips in your example because the values are math.

When you use modes 0--2 ConTeXt inserts a space based on the width of an 
period but the other
modes use either \thinspace (mode 3 and 4) or \thickspace (mode 5 and 6) 
as separator.

%%%% begin example
\setdigitmode{3}

\startdocument

\type{1,000} = \the\dimexpr\widthofstring{1,000}\relax

\type{1.000} = \the\dimexpr\widthofstring{\digits{1.000}}\relax

\type{1\thinspace 000} = \the\dimexpr\widthofstring{1\thinspace 000}\relax

\type{1.000} = \the\dimexpr\widthofstring{\digits{1.===}}\relax

\stopdocument
%%%% end example

Wolfgang

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