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<p>Selective application would be an option, but because the actual
mechanisms<br>
implemented as part of the axis would (presumably) be opaque at
that level, <br>
you'd either be stabbing around in the dark hoping to get a good
combination,<br>
or iteratively "discovering" the particular mechanisms based on
the substitutions<br>
or adjustments being made and then applying the axis to parts of
the line<br>
on that basis.</p>
<p>Skef<br>
</p>
<div class="moz-cite-prefix">On 3/15/24 09:47, John Hudson via
mpeg-otspec wrote:<br>
</div>
<blockquote type="cite"
cite="mid:f719e66d-2760-4ef3-90d5-15338911eb9e@tiro.ca">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<div class="moz-cite-prefix">On 2024-03-15 8:52 am, Skef Iterum
via mpeg-otspec wrote:<br>
</div>
<blockquote type="cite"
cite="mid:d57f2176-14a6-4556-87f5-27d6212b694a@skef.org">
<meta http-equiv="Content-Type"
content="text/html; charset=UTF-8">
<p>Just from a conceptual level, it seems like one thing that
would be easy<br>
to do with an engine but hard to do with an axis is to control
the number<br>
of times the <i>same</i> contracting or expanding mechanism
is used on a given<br>
line. So, to be over-simplistic, if there's a larger "fi" and
a smaller "fi" and two<br>
"fi" candidates on a line, making it so that only one uses the
smaller and <br>
one uses the larger.</p>
<p>Another thing that seems harder to with an axis is to trade
off expanding<br>
and contracting elements. So, for example, if you have a way
of making<br>
"Qu" significantly larger and a way of making "ch" slightly
smaller, achieving<br>
a happy medium increase in length by using both of those.<br>
</p>
</blockquote>
<p>So, for example, if an expansion substitution made the width
slightly too much for the measure, a contraction substitution
elsewhere in the line might bring it to where it needs to be?
Yes, that seems problematic unless the engine is able to apply
the JSTF axis selectively within a line rather than across the
whole line.</p>
JH<br>
<pre class="moz-signature" cols="72">--
John Hudson
Tiro Typeworks Ltd <a class="moz-txt-link-abbreviated"
href="http://www.tiro.com" moz-do-not-send="true">www.tiro.com</a>
Tiro Typeworks is physically located on islands
in the Salish Sea, on the traditional territory
of the Snuneymuxw and Penelakut First Nations.
__________
EMAIL HOUR
In the interests of productivity, I am only dealing
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between 4PM and 5PM. If you need to contact me more
urgently, please use other means.</pre>
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