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With the utopia or charter fonts from mathdesign, the size of the vertical bar delimiter does not match the surrounding delimiters, except for the smallest size. I do not know about garamond (not installed on my system).

\documentclass{article}
\usepackage[utopia]{mathdesign} % same problem with [charter]
\usepackage{amsmath}
\begin{document}
\[
    [|] \quad
    \big[ \big| \big] \quad 
    \Big[ \Big| \Big] \quad
    \bigg[ \bigg| \bigg] \quad
    \left[ \vphantom{\sum_0^0} \middle| \right]
\]
\end{document}

enter image description here

Is this a bug or a design choice? Is there a way to remedy this?

1 Answer 1

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I don't know if it's a design choice or not, but, concerning utopia, the fourier package, also based on this font, doesn't have this drawback: the difference is ca 0.3pt. I advise to load also erewhon, a utopia clone, which adds real smallcaps (in roman, italic, bold and bold italic), inferior and superior figures and a few other treats.

\documentclass[border=3pt]{standalone}
\usepackage{fourier, erewhon}
\usepackage{amsmath}

\begin{document}

$ 
[|] \quad
\bigl[ \bigm| \bigr] \quad
\Bigl[ \Bigm| \Bigr] \quad
\biggl[ \biggm| \biggr] \quad
\Biggl[ \Biggm| \Biggr] \quad
\left[ \dfrac{\sqrt{\sum_0^{n}}}{n^2} \middle| \right]
$

\end{document} 

enter image description here

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  • Thanks for the tip; I'll use the fourier package for later use of utopia (although it seems that it has its own problems). May 3, 2017 at 19:01

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