On 12/27/2017 7:01 PM, Alan Braslau wrote:
Why is the \vec{} arrow too short in some cases?
Compare $\vec{X}$ to $\vec{Y}$.
The MWE below looks wrong in the default font
and is even uglier when pagella is used.
Alan
%\setupbodyfont [pagella]
\starttext
$\vec{X}$ vs. $\vec{Y}$
\stoptext
As this is has been the logic in tex font design for more than 3
decades, there's not much that we can do about it apart from patching
the font (doable but somewhat nasty and boring as we then need to patch
specific elements of (each) hvariant and it falls in the category "hard
to motivate myself for").
\showglyphs
\starttext
\start
\dorecurse{50}{$\vec{\blackrule[width=#1pt]}$\space}\unskip\par
\stop
\blank
\start
\switchtobodyfont [pagella]
\dorecurse{50}{$\vec{\blackrule[width=#1pt]}$\space}\unskip\par
\stop
\blank
\start
\switchtobodyfont [cambria]
\dorecurse{50}{$\vec{\blackrule[width=#1pt]}$\space}\unskip\par
\stop
\stoptext
Shows that it's a font design issue: the extensible has a threshold
related to the middle part and it should (1) have at least one more
fixed size, or (2) have one fixed size and for the rest be extensible
but that would be somewhat inefficient ion most cases, so (3) here we
have a trade-off.
Just blame the font ... cambria is (of course) ok.
Hans
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