vertical offset with "i" in position-command

vertical offset with "i" in position-command

[Peter Münster]

Hi,

When I want to type an "i" in the position-command, there is some
vertical offset:

\starttext
\startpositioning
\position(1, 1){i} \position(2, 1){x}
\position(1, 2){x} \position(2, 2){i}
\position(1, 3){a} \position(2, 3){x}
\position(1, 4){x} \position(2, 4){a}
\stoppositioning
\stoptext

Why is it so, and how could I avoid that please?

TIA for any hints,
-- 
           Peter
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Re: vertical offset with "i" in position-command

[Wolfgang Schuster]

Peter Münster schrieb am 12.02.2021 um 13:31:
> Hi,
> 
> When I want to type an "i" in the position-command, there is some
> vertical offset:
> 
> \starttext
> \startpositioning
> \position(1, 1){i} \position(2, 1){x}
> \position(1, 2){x} \position(2, 2){i}
> \position(1, 3){a} \position(2, 3){x}
> \position(1, 4){x} \position(2, 4){a}
> \stoppositioning
> \stoptext
> 
> Why is it so, and how could I avoid that please?

1. Because the letters have different heights.

\startTEXpage[offset=1ex]
\processisolatedchars{aix}\ruledhbox
\stopTEXpage

2. Add \strut, e.g. \position(1, 1){\strut i}

Wolfgang
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Re: vertical offset with "i" in position-command

[Peter Münster]

On Fri, Feb 12 2021, Wolfgang Schuster wrote:

> 2. Add \strut, e.g. \position(1, 1){\strut i}

Ah, thanks. So the anchor is not the baseline, but the top-left corner of
the content.

Since "\setuppositioning[before=\strut]" does not work, I use this
workaround now:
\def\myPosition(#1, #2)#3{\position(#1, #2){\strut#3}}

Would it make sense to add the "before" key to \setuppositioning?

-- 
           Peter
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